TapTax MCP MCP server

An official MCP server by TapTax that integrates with Claude to allow users to ask about tax liabilities, log receipts from photos, create and send invoices, review bank transactions, and prepare quarterly MTD updates for HMRC filing.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by TapTax

MCP endpoint (Streamable HTTP)

https://api.taptax.co.uk/mcp

Vendor documentation

What you can do with it

Ask about estimated tax owed for the year
Log a receipt from a photo
Create and send an invoice
Prepare quarterly MTD update

Tools advertised by the last live check:

estimate_self_employed_tax
check_tax_code
check_mtd_status
get_mtd_deadlines
calculate_take_home_pay
calculate_gross_salary_for_take_home
calculate_salary_sacrifice
calculate_pro_rata_salary
convert_hourly_rate_to_salary
convert_salary_to_hourly_rate
calculate_student_loan_repayment
calculate_child_benefit_charge
calculate_tax_on_multiple_incomes
calculate_pension_tax_relief
calculate_dividend_tax
compare_salary_and_dividends
compare_limited_company_and_sole_trader
calculate_corporation_tax
calculate_contractor_day_rate
compare_inside_and_outside_ir35
calculate_cis_deduction
plan_quarterly_tax_set_aside
calculate_mileage_allowance
estimate_self_assessment_penalties
calculate_vat
check_vat_registration
check_vat_reverse_charge
calculate_markup
calculate_profit_margin
calculate_invoice_due_date
calculate_late_payment_interest
calculate_capital_gains_tax
calculate_rental_income_tax
calculate_savings_interest_tax
calculate_stamp_duty
prepare_business_document
generate_invoice_numbers
get_tax_position
list_transactions
get_mileage_summary
add_transaction
update_transaction
log_mileage_trip
list_invoices
create_invoice
send_invoice
mark_invoice_paid
prepare_quarterly_update

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 a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http taptax-mcp https://api.taptax.co.uk/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 taptax-mcp --url https://api.taptax.co.uk/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable taptax-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "taptax-mcp": {
      "url": "https://api.taptax.co.uk/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "taptax-mcp": {
      "type": "streamableHttp",
      "url": "https://api.taptax.co.uk/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start taptax-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "taptax-mcp": {
      "type": "http",
      "url": "https://api.taptax.co.uk/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 taptax-mcp https://api.taptax.co.uk/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "taptax-mcp": {
      "url": "https://api.taptax.co.uk/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": {
    "taptax-mcp": {
      "serverUrl": "https://api.taptax.co.uk/mcp"
    }
  }
}

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