Koskamo

Tallyfern Rates MCP

A free, read-only MCP server providing Canadian tax and travel rates sourced from official CRA and Canada.ca pages. It allows AI assistants to retrieve GST/HST rates by province, perform small-supplier threshold checks, and access CRA per-km allowance and travel rates, with every answer including its source and an 'as of' date.

Visit Tallyfern

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Tallyfern Rates MCP logo, by TallyfernVendor evidenceStreamable HTTPNo sign-inEndpoint checked 2026-11-06Operated by Tallyfern
MCP endpoint (Streamable HTTP)
https://mcp.tallyfern.com/mcp
Vendor documentation

What its tools do

5 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (5)

5 of 5 have a description · 5 of 5 declare behavior hints · 4 of 4 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Passed Official MCP Registry namespace is tied to tallyfern.com ·
  • Passed Endpoint is on the registry namespace domain ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Retrieve current GST/HST rates by province
  • Check if a business exceeds the $30,000 small-supplier threshold
  • Access CRA per-km allowance and travel rates
  • Verify official CRA sources for tax calculations

Source and maintenance

Vendor evidenceRegistry 0.3.4
mcp-registry: com.tallyfern/rates@0.3.4Project website

Protocol and capabilities

Server
tallyfern-rates 0.3.3
MCP protocol negotiated in check
2025-11-25
Tools
5 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": true
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Canadian small-business and side-hustle rates from official CRA/Canada.ca pages: GST/HST small-supplier ($30,000) check, GST/HST/PST rates by province, CRA per-km automobile allowance, and CRA simplified meal/vehicle rates. Every answer cites its canada.ca source and an as-of date. General information, not tax advice.

Tools

5 advertised

gst_hst_small_supplier_check — GST/HST small supplier ($30,000) check
Advertised by the server during the last successful anonymous check.
Advertised read-only

Apply the CRA's $30,000 small-supplier tests (single calendar quarter and four consecutive calendar quarters) to taxable revenue by calendar quarter. Says whether the person must register for the GST/HST, when they stop being a small supplier, the effective date of registration, and headroom for next quarter. Most businesses only (not charities/public service bodies). Returns structuredContent with status, headline, the triggering quarter (or null), per-quarter rolling totals, next-quarter headroom, sources and an as-of date.

gst_hst_small_supplier_check input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "quarters"
  ],
  "properties": {
    "quarters": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "year",
          "quarter",
          "amount"
        ],
        "properties": {
          "year": {
            "type": "integer",
            "maximum": 2100,
            "minimum": 1991,
            "description": "Calendar year of the quarter, e.g. 2026"
          },
          "amount": {
            "type": "number",
            "minimum": 0,
            "description": "Taxable revenue in CAD before expenses (worldwide taxable supplies incl. zero-rated; exclude exempt)"
          },
          "quarter": {
            "type": "integer",
            "maximum": 4,
            "minimum": 1,
            "description": "Calendar quarter: 1 = Jan–Mar, 2 = Apr–Jun, 3 = Jul–Sep, 4 = Oct–Dec"
          }
        },
        "additionalProperties": false
      },
      "maxItems": 40,
      "minItems": 1,
      "description": "Consecutive calendar quarters, no gaps (use 0 for quarters with no sales)."
    },
    "taxiOrRideshare": {
      "type": "boolean",
      "description": "True if self-employed taxi or commercial ride-sharing driver (must register regardless)."
    }
  },
  "additionalProperties": false
}
gst_hst_small_supplier_check output schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "rule",
    "ruleVersion",
    "threshold",
    "currency",
    "status",
    "headline",
    "trigger",
    "explanation",
    "latest",
    "nextQuarter",
    "quarters",
    "sources",
    "asOf",
    "disclaimer",
    "relatedLink",
    "dataVersion"
  ],
  "properties": {
    "asOf": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "Date the rules were last verified"
    },
    "rule": {
      "type": "string",
      "description": "Identifier of the rule set applied (ca-gst-hst-small-supplier)"
    },
    "latest": {
      "type": "object",
      "required": [
        "label",
        "rollingFourQuarters",
        "percentOfThreshold"
      ],
      "properties": {
        "label": {
          "type": "string",
          "description": "e.g. 'Q2 2026 (April 1 to June 30)'"
        },
        "percentOfThreshold": {
          "type": "number",
          "description": "rollingFourQuarters as a percent of the $30,000 threshold"
        },
        "rollingFourQuarters": {
          "type": "number",
          "description": "Total of the latest quarter and up to three previous quarters"
        }
      },
      "description": "Summary for the most recent quarter given",
      "additionalProperties": false
    },
    "status": {
      "enum": [
        "must_register",
        "must_register_taxi",
        "small_supplier"
      ],
      "type": "string",
      "description": "Result of the small-supplier tests"
    },
    "sources": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "uri"
      },
      "description": "Official canada.ca pages used for this answer"
    },
    "trigger": {
      "anyOf": [
        {
          "type": "object",
          "required": [
            "test",
            "year",
            "quarter",
            "label",
            "amount",
            "ceasesOn",
            "ceasesToBeSmallSupplier",
            "effectiveRegistration"
          ],
          "properties": {
            "note": {
              "type": "string",
              "description": "Extra caveat, e.g. a later quarter that is also over the threshold on its own"
            },
            "test": {
              "enum": [
                "single_quarter",
                "four_quarters"
              ],
              "type": "string",
              "description": "Which test was failed first"
            },
            "year": {
              "type": "integer",
              "description": "Calendar year of the triggering quarter"
            },
            "label": {
              "type": "string",
              "description": "e.g. 'Q2 2026 (April 1 to June 30)'"
            },
            "amount": {
              "type": "number",
              "description": "Revenue that went over the threshold"
            },
            "quarter": {
              "type": "integer",
              "maximum": 4,
              "minimum": 1,
              "description": "Calendar quarter: 1 = Jan–Mar, 2 = Apr–Jun, 3 = Jul–Sep, 4 = Oct–Dec"
            },
            "ceasesOn": {
              "anyOf": [
                {
                  "type": "string",
                  "pattern": "^\\d{4}-\\d{2}-\\d{2}$"
                },
                {
                  "type": "null"
                }
              ],
              "description": "Last day as a small supplier (four-quarter test); null for the single-quarter test"
            },
            "effectiveRegistration": {
              "type": "string",
              "description": "Plain-language effective date of registration (when to start charging GST/HST)"
            },
            "ceasesToBeSmallSupplier": {
              "type": "string",
              "description": "Plain-language statement of when the person stops being a small supplier"
            }
          },
          "additionalProperties": false
        },
        {
          "type": "null"
        }
      ],
      "description": "The first quarter that triggered registration, or null"
    },
    "currency": {
      "type": "string",
      "const": "CAD",
      "description": "Currency of all amounts: Canadian dollars"
    },
    "headline": {
      "type": "string",
      "description": "One-sentence answer"
    },
    "quarters": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "year",
          "quarter",
          "label",
          "amount",
          "rollingFourQuarters",
          "quartersInWindow",
          "overSingleQuarter",
          "overFourQuarters"
        ],
        "properties": {
          "year": {
            "type": "integer",
            "description": "Calendar year, e.g. 2026"
          },
          "label": {
            "type": "string",
            "description": "e.g. 'Q2 2026 (April 1 to June 30)'"
          },
          "amount": {
            "type": "number",
            "description": "Taxable revenue entered for this quarter"
          },
          "quarter": {
            "type": "integer",
            "maximum": 4,
            "minimum": 1,
            "description": "Calendar quarter: 1 = Jan–Mar, 2 = Apr–Jun, 3 = Jul–Sep, 4 = Oct–Dec"
          },
          "overFourQuarters": {
            "type": "boolean",
            "description": "True if the rolling total is over $30,000"
          },
          "quartersInWindow": {
            "type": "integer",
            "maximum": 4,
            "minimum": 1,
            "description": "How many quarters (1–4) are in that rolling total"
          },
          "overSingleQuarter": {
            "type": "boolean",
            "description": "True if this quarter alone is over $30,000"
          },
          "rollingFourQuarters": {
            "type": "number",
            "description": "Total of this and up to three previous quarters"
          }
        },
        "additionalProperties": false
      },
      "description": "Each quarter checked, oldest first"
    },
    "threshold": {
      "type": "number",
      "description": "Small-supplier threshold (30000)"
    },
    "disclaimer": {
      "type": "string",
      "description": "Not-tax-advice notice"
    },
    "dataVersion": {
      "type": "string",
      "description": "Version of the Tallyfern Rates dataset, e.g. 2026.10.03"
    },
    "explanation": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Short plain-language points explaining the result"
    },
    "nextQuarter": {
      "type": "object",
      "required": [
        "year",
        "quarter",
        "label",
        "headroom"
      ],
      "properties": {
        "year": {
          "type": "integer",
          "description": "Calendar year, e.g. 2026"
        },
        "label": {
          "type": "string",
          "description": "e.g. 'Q2 2026 (April 1 to June 30)'"
        },
        "quarter": {
          "type": "integer",
          "maximum": 4,
          "minimum": 1,
          "description": "Calendar quarter: 1 = Jan–Mar, 2 = Apr–Jun, 3 = Jul–Sep, 4 = Oct–Dec"
        },
        "headroom": {
          "type": "number",
          "description": "Most revenue next quarter can have while staying a small supplier (0 if already over)"
        }
      },
      "description": "The quarter after the latest one given, with remaining headroom",
      "additionalProperties": false
    },
    "relatedLink": {
      "type": "string",
      "format": "uri",
      "description": "Related free Tallyfern tool or page"
    },
    "ruleVersion": {
      "type": "string",
      "description": "Version of that rule set, e.g. 1.0.0"
    }
  },
  "additionalProperties": false
}
gst_hst_small_supplier_check annotations
{
  "title": "GST/HST small supplier check",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
gst_hst_rate_by_province — GST/HST and PST rates by province
Advertised by the server during the last successful anonymous check.
Advertised read-only

Current GST/HST rate for a Canadian province or territory (or all 13), with the PST/QST rate CRA lists for reference. From CRA's 'Charge and collect the GST/HST' table. Returns structuredContent with one rate row (or all 13), the effective-from date, notes, the canada.ca source and an as-of date.

gst_hst_rate_by_province input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "province": {
      "type": "string",
      "maxLength": 40,
      "minLength": 1,
      "description": "Province or territory code or name, e.g. \"ON\", \"Ontario\", \"QC\", \"Yukon\"."
    }
  },
  "additionalProperties": false
}
gst_hst_rate_by_province output schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "asOf",
    "effectiveFrom",
    "source",
    "notes",
    "disclaimer",
    "relatedLink",
    "dataVersion"
  ],
  "properties": {
    "asOf": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "Date (YYYY-MM-DD) the figures were last checked against the source pages"
    },
    "rate": {
      "type": "object",
      "required": [
        "code",
        "name",
        "taxType",
        "gstHstPercent",
        "provincialSalesTaxPercent",
        "provincialSalesTaxName",
        "combinedPercentIfBothApply"
      ],
      "properties": {
        "code": {
          "enum": [
            "AB",
            "BC",
            "MB",
            "NB",
            "NL",
            "NT",
            "NS",
            "NU",
            "ON",
            "PE",
            "QC",
            "SK",
            "YT"
          ],
          "type": "string",
          "description": "Province or territory code"
        },
        "name": {
          "type": "string",
          "description": "Province or territory name, e.g. Ontario"
        },
        "taxType": {
          "enum": [
            "GST",
            "HST"
          ],
          "type": "string",
          "description": "GST (federal only) or HST (harmonized federal + provincial)"
        },
        "gstHstPercent": {
          "type": "number",
          "description": "GST or HST rate in percent"
        },
        "provincialSalesTaxName": {
          "type": [
            "string",
            "null"
          ],
          "description": "PST, QST or null"
        },
        "provincialSalesTaxPercent": {
          "type": [
            "number",
            "null"
          ],
          "description": "PST/QST in percent as listed by CRA for reference; null in HST provinces"
        },
        "combinedPercentIfBothApply": {
          "type": "number",
          "description": "GST/HST plus PST/QST where both apply"
        }
      },
      "description": "The requested province or territory (when one was given)",
      "additionalProperties": false
    },
    "notes": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Caveats: place of supply, zero-rated/exempt supplies, PST shown for reference"
    },
    "rates": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "code",
          "name",
          "taxType",
          "gstHstPercent",
          "provincialSalesTaxPercent",
          "provincialSalesTaxName"
        ],
        "properties": {
          "code": {
            "enum": [
              "AB",
              "BC",
              "MB",
              "NB",
              "NL",
              "NT",
              "NS",
              "NU",
              "ON",
              "PE",
              "QC",
              "SK",
              "YT"
            ],
            "type": "string",
            "description": "Province or territory code"
          },
          "name": {
            "type": "string",
            "description": "Province or territory name, e.g. Ontario"
          },
          "taxType": {
            "enum": [
              "GST",
              "HST"
            ],
            "type": "string",
            "description": "GST (federal only) or HST (harmonized federal + provincial)"
          },
          "gstHstPercent": {
            "type": "number",
            "description": "GST or HST rate in percent"
          },
          "provincialSalesTaxName": {
            "type": [
              "string",
              "null"
            ],
            "description": "PST, QST or null"
          },
          "provincialSalesTaxPercent": {
            "type": [
              "number",
              "null"
            ],
            "description": "PST/QST in percent as listed by CRA for reference; null in HST provinces"
          }
        },
        "additionalProperties": false
      },
      "description": "All 13 provinces and territories (when no province was given)"
    },
    "source": {
      "type": "object",
      "required": [
        "title",
        "url"
      ],
      "properties": {
        "url": {
          "type": "string",
          "format": "uri",
          "description": "Official canada.ca page"
        },
        "title": {
          "type": "string",
          "description": "Title of the official page"
        },
        "pageDateModified": {
          "anyOf": [
            {
              "type": "string",
              "pattern": "^\\d{4}-\\d{2}-\\d{2}$"
            },
            {
              "type": "null"
            }
          ],
          "description": "'Date modified' shown on the page, if any"
        }
      },
      "description": "Official source for these figures",
      "additionalProperties": false
    },
    "disclaimer": {
      "type": "string",
      "description": "Not-tax-advice notice"
    },
    "dataVersion": {
      "type": "string",
      "description": "Version of the Tallyfern Rates dataset, e.g. 2026.10.03"
    },
    "relatedLink": {
      "type": "string",
      "format": "uri",
      "description": "Related free Tallyfern tool or page"
    },
    "effectiveFrom": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "Rates effective on or after this date"
    }
  },
  "additionalProperties": false
}
gst_hst_rate_by_province annotations
{
  "title": "GST/HST rate by province",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
cra_automobile_allowance_rate — CRA per-km automobile allowance rate
Advertised by the server during the last successful anonymous check.
Advertised read-only

CRA reasonable per-kilometre allowance rates for employer-paid vehicle allowances (2026 default; 2025 also available): first 5,000 km and after, provinces vs territories. Optionally calculates the allowance for a number of business kilometres. Returns structuredContent with the per-km rates for provinces and territories, the rates for the given region, an optional tiered calculation, the source and an as-of date.

cra_automobile_allowance_rate input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "year": {
      "enum": [
        2026,
        2025
      ],
      "type": "number",
      "description": "Calendar year (2026 or 2025). Default 2026."
    },
    "province": {
      "type": "string",
      "maxLength": 40,
      "minLength": 1,
      "description": "Province or territory code or name, e.g. \"ON\", \"Ontario\", \"QC\", \"Yukon\"."
    },
    "kilometres": {
      "type": "number",
      "maximum": 1000000,
      "minimum": 0,
      "description": "Business kilometres in the calendar year, to calculate an allowance."
    }
  },
  "additionalProperties": false
}
cra_automobile_allowance_rate output schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "year",
    "currency",
    "rates",
    "scope",
    "asOf",
    "source",
    "territoryExtraPerKm",
    "disclaimer",
    "relatedLink",
    "dataVersion"
  ],
  "properties": {
    "asOf": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "Date (YYYY-MM-DD) the figures were last checked against the source pages"
    },
    "year": {
      "type": "integer",
      "description": "Year the per-km rates apply to (2026 or 2025)"
    },
    "rates": {
      "type": "object",
      "required": [
        "provinces",
        "territories"
      ],
      "properties": {
        "provinces": {
          "type": "object",
          "required": [
            "first5000Km",
            "after5000Km"
          ],
          "properties": {
            "after5000Km": {
              "type": "number",
              "description": "$ per km after 5,000 km"
            },
            "first5000Km": {
              "type": "number",
              "description": "$ per km, first 5,000 km"
            }
          },
          "description": "Rates for the provinces",
          "additionalProperties": false
        },
        "territories": {
          "type": "object",
          "required": [
            "first5000Km",
            "after5000Km"
          ],
          "properties": {
            "after5000Km": {
              "type": "number",
              "description": "$ per km after 5,000 km"
            },
            "first5000Km": {
              "type": "number",
              "description": "$ per km, first 5,000 km"
            }
          },
          "description": "Rates for YT, NT and NU",
          "additionalProperties": false
        }
      },
      "description": "CRA per-km allowance rates for that year",
      "additionalProperties": false
    },
    "scope": {
      "type": "string",
      "description": "Who these rates are for (employer allowances to employees) and who they are not for"
    },
    "region": {
      "type": "object",
      "required": [
        "code",
        "name",
        "isTerritory"
      ],
      "properties": {
        "code": {
          "enum": [
            "AB",
            "BC",
            "MB",
            "NB",
            "NL",
            "NT",
            "NS",
            "NU",
            "ON",
            "PE",
            "QC",
            "SK",
            "YT"
          ],
          "type": "string",
          "description": "Province or territory code"
        },
        "name": {
          "type": "string",
          "description": "Province or territory name"
        },
        "isTerritory": {
          "type": "boolean",
          "description": "True for YT, NT, NU"
        }
      },
      "description": "The province or territory given, if any",
      "additionalProperties": false
    },
    "source": {
      "type": "object",
      "required": [
        "title",
        "url"
      ],
      "properties": {
        "url": {
          "type": "string",
          "format": "uri",
          "description": "Official canada.ca page"
        },
        "title": {
          "type": "string",
          "description": "Title of the official page"
        },
        "pageDateModified": {
          "anyOf": [
            {
              "type": "string",
              "pattern": "^\\d{4}-\\d{2}-\\d{2}$"
            },
            {
              "type": "null"
            }
          ],
          "description": "'Date modified' shown on the page, if any"
        }
      },
      "description": "Official source for these figures",
      "additionalProperties": false
    },
    "currency": {
      "type": "string",
      "const": "CAD",
      "description": "Currency of all amounts: Canadian dollars"
    },
    "applicable": {
      "type": "object",
      "required": [
        "first5000Km",
        "after5000Km"
      ],
      "properties": {
        "after5000Km": {
          "type": "number",
          "description": "$ per km after 5,000 km"
        },
        "first5000Km": {
          "type": "number",
          "description": "$ per km, first 5,000 km"
        }
      },
      "description": "Rates that apply to the given province or territory",
      "additionalProperties": false
    },
    "disclaimer": {
      "type": "string",
      "description": "Not-tax-advice notice"
    },
    "calculation": {
      "type": "object",
      "required": [
        "kilometres",
        "regionUsed",
        "first5000",
        "after5000",
        "total",
        "note"
      ],
      "properties": {
        "note": {
          "type": "string",
          "description": "Assumption behind the calculation"
        },
        "total": {
          "type": "number",
          "description": "Amount in Canadian dollars (CAD)"
        },
        "after5000": {
          "type": "object",
          "required": [
            "km",
            "rate",
            "amount"
          ],
          "properties": {
            "km": {
              "type": "number",
              "description": "Kilometres in this tier"
            },
            "rate": {
              "type": "number",
              "description": "$ per km used for this tier"
            },
            "amount": {
              "type": "number",
              "description": "km × rate for this tier, in CAD"
            }
          },
          "description": "Kilometres over 5,000 at the second-tier rate",
          "additionalProperties": false
        },
        "first5000": {
          "type": "object",
          "required": [
            "km",
            "rate",
            "amount"
          ],
          "properties": {
            "km": {
              "type": "number",
              "description": "Kilometres in this tier"
            },
            "rate": {
              "type": "number",
              "description": "$ per km used for this tier"
            },
            "amount": {
              "type": "number",
              "description": "km × rate for this tier, in CAD"
            }
          },
          "description": "Kilometres up to 5,000 at the first-tier rate",
          "additionalProperties": false
        },
        "kilometres": {
          "type": "number",
          "description": "Business kilometres given"
        },
        "regionUsed": {
          "type": "string",
          "description": "Province/territory code whose rates were used"
        }
      },
      "description": "Allowance for the given kilometres",
      "additionalProperties": false
    },
    "dataVersion": {
      "type": "string",
      "description": "Version of the Tallyfern Rates dataset, e.g. 2026.10.03"
    },
    "relatedLink": {
      "type": "string",
      "format": "uri",
      "description": "Related free Tallyfern tool or page"
    },
    "territoryExtraPerKm": {
      "type": "number",
      "description": "Extra $ per km for the territories over the provincial rate"
    }
  },
  "additionalProperties": false
}
cra_automobile_allowance_rate annotations
{
  "title": "CRA automobile allowance rate",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
cra_meal_travel_allowance — CRA simplified meal and vehicle rates
Advertised by the server during the last successful anonymous check.
Advertised read-only

CRA simplified-method rates (latest published tax year): flat meal rate per meal and maximum per day, and vehicle cents/km by province or territory where travel begins. These apply to moving expenses, northern residents deductions and medical travel, not to employer per-diems. Optionally calculates amounts. Returns structuredContent with the tax year, meal rates, vehicle cents/km (one province or all), optional vehicle and meal amounts, scope notes, the source and an as-of date.

cra_meal_travel_allowance input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "days": {
      "type": "integer",
      "maximum": 3660,
      "minimum": 0,
      "description": "Number of days (caps meals at the daily maximum)."
    },
    "meals": {
      "type": "integer",
      "maximum": 10000,
      "minimum": 0,
      "description": "Number of meals."
    },
    "province": {
      "type": "string",
      "maxLength": 40,
      "minLength": 1,
      "description": "Province or territory where the travel begins."
    },
    "kilometres": {
      "type": "number",
      "maximum": 1000000,
      "minimum": 0,
      "description": "Kilometres driven, to calculate a vehicle amount (needs province)."
    }
  },
  "additionalProperties": false
}
cra_meal_travel_allowance output schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "taxYear",
    "meals",
    "scope",
    "latestPublishedNote",
    "asOf",
    "source",
    "disclaimer",
    "relatedLink",
    "dataVersion"
  ],
  "properties": {
    "asOf": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "Date (YYYY-MM-DD) the figures were last checked against the source pages"
    },
    "meals": {
      "type": "object",
      "required": [
        "perMeal",
        "maxPerDay",
        "currencyNote"
      ],
      "properties": {
        "perMeal": {
          "type": "number",
          "description": "Amount in Canadian dollars (CAD)"
        },
        "maxPerDay": {
          "type": "number",
          "description": "Amount in Canadian dollars (CAD)"
        },
        "currencyNote": {
          "type": "string",
          "description": "CRA notes on currency, sales tax and receipts"
        }
      },
      "description": "Simplified-method meal rates",
      "additionalProperties": false
    },
    "scope": {
      "type": "string",
      "description": "What these rates apply to (moving expenses, northern residents deductions, medical travel) and what they don't"
    },
    "region": {
      "type": "object",
      "required": [
        "code",
        "name"
      ],
      "properties": {
        "code": {
          "enum": [
            "AB",
            "BC",
            "MB",
            "NB",
            "NL",
            "NT",
            "NS",
            "NU",
            "ON",
            "PE",
            "QC",
            "SK",
            "YT"
          ],
          "type": "string",
          "description": "Province or territory code"
        },
        "name": {
          "type": "string",
          "description": "Province or territory name"
        }
      },
      "description": "Province or territory where travel begins, if given",
      "additionalProperties": false
    },
    "source": {
      "type": "object",
      "required": [
        "title",
        "url"
      ],
      "properties": {
        "url": {
          "type": "string",
          "format": "uri",
          "description": "Official canada.ca page"
        },
        "title": {
          "type": "string",
          "description": "Title of the official page"
        },
        "pageDateModified": {
          "anyOf": [
            {
              "type": "string",
              "pattern": "^\\d{4}-\\d{2}-\\d{2}$"
            },
            {
              "type": "null"
            }
          ],
          "description": "'Date modified' shown on the page, if any"
        }
      },
      "description": "Official source for these figures",
      "additionalProperties": false
    },
    "taxYear": {
      "type": "integer",
      "description": "Tax year of the simplified rates returned (latest published on the CRA page)"
    },
    "disclaimer": {
      "type": "string",
      "description": "Not-tax-advice notice"
    },
    "mealAmount": {
      "type": "object",
      "required": [
        "meals",
        "days",
        "amount",
        "rule"
      ],
      "properties": {
        "days": {
          "anyOf": [
            {
              "type": "integer"
            },
            {
              "type": "null"
            }
          ],
          "description": "Days given, or null"
        },
        "rule": {
          "type": "string",
          "description": "The rule applied, e.g. '$23 per meal, up to $69 per day per person.'"
        },
        "meals": {
          "anyOf": [
            {
              "type": "integer"
            },
            {
              "type": "null"
            }
          ],
          "description": "Meals given, or null"
        },
        "amount": {
          "type": "number",
          "description": "Meal amount after applying the daily maximum, in CAD"
        }
      },
      "description": "Meal amount (when meals or days were given)",
      "additionalProperties": false
    },
    "dataVersion": {
      "type": "string",
      "description": "Version of the Tallyfern Rates dataset, e.g. 2026.10.03"
    },
    "relatedLink": {
      "type": "string",
      "format": "uri",
      "description": "Related free Tallyfern tool or page"
    },
    "vehicleAmount": {
      "type": "number",
      "description": "Kilometres × cents per km, converted to CAD dollars (when kilometres and province were given)"
    },
    "vehicleCentsPerKm": {
      "type": "number",
      "description": "Cents per km for the province where travel begins"
    },
    "latestPublishedNote": {
      "type": "string",
      "description": "Which tax year the CRA page showed as of the check date"
    },
    "vehicleCentsPerKmByProvince": {
      "type": "object",
      "description": "Cents per km by province code (when no province was given)",
      "additionalProperties": {
        "type": "number"
      }
    }
  },
  "additionalProperties": false
}
cra_meal_travel_allowance annotations
{
  "title": "CRA meal and vehicle rates",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
ontario_hst_basics — Ontario HST basics
Advertised by the server during the last successful anonymous check.
Advertised read-only

Plain-language basics for Ontario businesses: the 13% HST rate, the $30,000 small-supplier threshold, the 29-day registration deadline and place-of-supply rule, with CRA sources. Returns structuredContent with the Ontario rate row, the threshold, the registration deadline in days, sources and an as-of date.

ontario_hst_basics input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
ontario_hst_basics output schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "province",
    "rate",
    "smallSupplierThreshold",
    "registerWithinDays",
    "sources",
    "asOf",
    "disclaimer",
    "relatedLink",
    "dataVersion"
  ],
  "properties": {
    "asOf": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "Date (YYYY-MM-DD) the figures were last checked against the source pages"
    },
    "rate": {
      "type": "object",
      "required": [
        "code",
        "name",
        "taxType",
        "gstHstPercent",
        "provincialSalesTaxPercent",
        "provincialSalesTaxName",
        "combinedPercentIfBothApply"
      ],
      "properties": {
        "code": {
          "enum": [
            "AB",
            "BC",
            "MB",
            "NB",
            "NL",
            "NT",
            "NS",
            "NU",
            "ON",
            "PE",
            "QC",
            "SK",
            "YT"
          ],
          "type": "string",
          "description": "Province or territory code"
        },
        "name": {
          "type": "string",
          "description": "Province or territory name, e.g. Ontario"
        },
        "taxType": {
          "enum": [
            "GST",
            "HST"
          ],
          "type": "string",
          "description": "GST (federal only) or HST (harmonized federal + provincial)"
        },
        "gstHstPercent": {
          "type": "number",
          "description": "GST or HST rate in percent"
        },
        "provincialSalesTaxName": {
          "type": [
            "string",
            "null"
          ],
          "description": "PST, QST or null"
        },
        "provincialSalesTaxPercent": {
          "type": [
            "number",
            "null"
          ],
          "description": "PST/QST in percent as listed by CRA for reference; null in HST provinces"
        },
        "combinedPercentIfBothApply": {
          "type": "number",
          "description": "GST/HST plus PST/QST where both apply"
        }
      },
      "description": "Ontario's HST rate row from CRA's table",
      "additionalProperties": false
    },
    "sources": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "uri"
      },
      "description": "Official canada.ca pages used for this answer"
    },
    "province": {
      "type": "string",
      "const": "ON",
      "description": "Always ON (Ontario)"
    },
    "disclaimer": {
      "type": "string",
      "description": "Not-tax-advice notice"
    },
    "dataVersion": {
      "type": "string",
      "description": "Version of the Tallyfern Rates dataset, e.g. 2026.10.03"
    },
    "relatedLink": {
      "type": "string",
      "format": "uri",
      "description": "Related free Tallyfern tool or page"
    },
    "registerWithinDays": {
      "type": "integer",
      "description": "Days to register after the effective date of registration (29)"
    },
    "smallSupplierThreshold": {
      "type": "number",
      "description": "Small-supplier threshold (30000)"
    }
  },
  "additionalProperties": false
}
ontario_hst_basics annotations
{
  "title": "Ontario HST basics",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

  1. 2026-11-06: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
442 ms
95th percentile latency
442 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 442 ms · metadata changed · 5 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http tallyfern-rates-mcp https://mcp.tallyfern.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add tallyfern-rates-mcp --url https://mcp.tallyfern.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable tallyfern-rates-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "tallyfern-rates-mcp": {
      "url": "https://mcp.tallyfern.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "tallyfern-rates-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp.tallyfern.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start tallyfern-rates-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "tallyfern-rates-mcp": {
      "type": "http",
      "url": "https://mcp.tallyfern.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http tallyfern-rates-mcp https://mcp.tallyfern.com/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://mcp.tallyfern.com/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "tallyfern-rates-mcp": {
      "serverUrl": "https://mcp.tallyfern.com/mcp"
    }
  }
}

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