TapTax
UK tax: take-home pay, self-employed and company tax, VAT, stamp duty, invoices and MTD.
Installation
Ajoutez ceci à la configuration MCP de votre client (Claude Desktop : claude_desktop_config.json ; Cursor : .cursor/mcp.json ; VS Code et les autres utilisent la même forme « mcpServers »).
claude mcp add --transport http taptax 'https://api.taptax.co.uk/mcp'{
"mcpServers": {
"taptax": {
"type": "http",
"url": "https://api.taptax.co.uk/mcp"
}
}
}Documentation
Tirée du README du projet sur GitHub, actualisée chaque semaine. Les liens ouvrent GitHub.
Sommaire
TapTax MCP server
TapTax is Making Tax Digital (MTD) software for UK sole traders and landlords. This repository holds the public connection details for the TapTax MCP server, plus ready-made plugins for Claude Code and Cursor. The server itself is hosted by TapTax; there is nothing to install or run.
- Server URL:
https://api.taptax.co.uk/mcp(Streamable HTTP) - Registry name:
uk.co.taptax/taptaxon the Official MCP Registry - Auth: none for the 37 public tools; OAuth 2.1 (PKCE, client ID metadata documents or dynamic client registration) for the 11 tools that act on your own TapTax account
- Docs: taptax.co.uk/integrations/claude and taptax.co.uk/integrations/chatgpt
Ask in plain English: how much tax you owe so far this year, which transactions still need reviewing, log this receipt, invoice a client, or get your quarterly update ready. The 37 public tools work with no account: the tax estimate, PAYE tax code checker, MTD eligibility and deadlines, and every calculator at taptax.co.uk/tax-calculator.
Connect
Claude
Add TapTax from the Claude connector directory, or add a custom connector with the server URL above.
Claude Code
Install the plugin from this repository:
/plugin marketplace add udohsolomon/taptax-mcp
/plugin install taptax@taptaxOr add just the server:
claude mcp add --transport http taptax https://api.taptax.co.uk/mcpThen run /mcp, choose taptax and Authenticate to use your own records.
Cursor
Install the TapTax plugin from the Cursor Marketplace, or add the server to ~/.cursor/mcp.json:
{
"mcpServers": {
"taptax": { "url": "https://api.taptax.co.uk/mcp" }
}
}VS Code
code --add-mcp '{"name":"taptax","type":"http","url":"https://api.taptax.co.uk/mcp"}'Any other MCP client
Point it at https://api.taptax.co.uk/mcp over Streamable HTTP.
The account tools answer an unauthenticated call with HTTP 401 and a WWW-Authenticate header naming the protected resource metadata, so clients that support MCP authorization start the sign-in themselves.
Tools
Public (no account)
| Tool | What it does |
|---|---|
estimate_self_employed_tax | Estimate self-employed tax |
check_tax_code | Check a PAYE tax code |
check_mtd_status | Check if Making Tax Digital applies |
get_mtd_deadlines | Making Tax Digital deadlines |
calculate_take_home_pay | Calculate take-home pay |
calculate_gross_salary_for_take_home | Work out the salary for a take-home figure |
calculate_salary_sacrifice | Calculate salary sacrifice savings |
calculate_pro_rata_salary | Calculate a pro rata salary |
convert_hourly_rate_to_salary | Convert an hourly rate to a salary |
convert_salary_to_hourly_rate | Convert a salary to an hourly rate |
calculate_student_loan_repayment | Calculate student loan repayments |
calculate_child_benefit_charge | Calculate the High Income Child Benefit Charge |
calculate_tax_on_multiple_incomes | Calculate tax on several incomes |
calculate_pension_tax_relief | Calculate pension tax relief |
calculate_dividend_tax | Calculate dividend tax |
compare_salary_and_dividends | Compare salary and dividends |
compare_limited_company_and_sole_trader | Compare a limited company and sole trader |
calculate_corporation_tax | Calculate corporation tax |
calculate_contractor_day_rate | Calculate contractor day rate income |
compare_inside_and_outside_ir35 | Compare inside and outside IR35 |
calculate_cis_deduction | Calculate a CIS deduction |
plan_quarterly_tax_set_aside | Plan how much tax to set aside |
calculate_mileage_allowance | Calculate the mileage allowance |
estimate_self_assessment_penalties | Estimate Self Assessment penalties |
calculate_vat | Add or remove VAT |
check_vat_registration | Check VAT registration and the Flat Rate Scheme |
check_vat_reverse_charge | Check the construction VAT reverse charge |
calculate_markup | Calculate a price from a markup |
calculate_profit_margin | Calculate a profit margin |
calculate_invoice_due_date | Calculate an invoice due date |
calculate_late_payment_interest | Calculate late payment interest on an invoice |
calculate_capital_gains_tax | Calculate Capital Gains Tax |
calculate_rental_income_tax | Calculate tax on rental income |
calculate_savings_interest_tax | Calculate tax on savings interest |
calculate_stamp_duty | Calculate Stamp Duty |
prepare_business_document | Prepare an invoice, quote or receipt to download |
generate_invoice_numbers | Generate invoice numbers |
Your TapTax account
| Tool | What it does | Access |
|---|---|---|
get_tax_position | Get my tax position | read |
list_transactions | List my transactions | read |
get_mileage_summary | Get my mileage | read |
add_transaction | Add income or an expense | read and change |
update_transaction | Update or review a transaction | read and change |
log_mileage_trip | Log a business trip | read and change |
list_invoices | List my invoices | read |
create_invoice | Create an invoice | read and change |
send_invoice | Show an invoice ready to send | read and change |
mark_invoice_paid | Mark an invoice paid | read and change |
prepare_quarterly_update | Prepare my quarterly update | read |
You sign in on taptax.co.uk and choose read-only or read-and-change access, and you can disconnect at any time in TapTax Settings > Connected apps.
What TapTax never does from a chat
- File to HMRC. HMRC's fraud-prevention rules need details of the device you file from, so
prepare_quarterly_updateshows the figures with a button that opens TapTax on the right period, and the last tap is yours. - Email an invoice by itself.
send_invoiceshows the invoice in a card, and it is emailed only when you press Send on that card. - Move money or reveal bank or HMRC logins.
Estimates are not tax advice.
What is in this repository
| Path | Purpose |
|---|---|
server.json | The Official MCP Registry entry |
.claude-plugin/ | Claude Code plugin manifest and marketplace |
.cursor-plugin/ | Cursor plugin manifest and marketplace |
.mcp.json, mcp.json | The remote server for Claude Code and Cursor |
skills/taptax/SKILL.md | Guidance the assistant loads with the plugin |
glama.json | Glama ownership claim |
Support and privacy
- Support: support@taptax.co.uk
- Privacy policy: taptax.co.uk/privacy
- Terms: taptax.co.uk/terms
TapTax is a trading name of HomePortfolio HQ Ltd.
Questions fréquentes
Qu'est-ce que TapTax ?
UK tax: take-home pay, self-employed and company tax, VAT, stamp duty, invoices and MTD.
Comment installer TapTax ?
Il fonctionne comme serveur distant. Dans Claude Code : claude mcp add --transport http taptax 'https://api.taptax.co.uk/mcp'. Pour les autres clients, collez la configuration JSON de cette page dans leurs réglages MCP.
Faut-il une clé API pour TapTax ?
Son entrée au registre n'indique aucune clé ni secret obligatoire. Certaines fonctions peuvent tout de même demander un compte auprès du service auquel il se connecte.
TapTax est-il open source ?
Oui. Son code est sur GitHub sous licence MIT.
Qui maintient TapTax ?
Il est publié par udohsolomon. AI.tn le référence sans le maintenir ni le recommander.
Issu du registre MCP officiel. Être listé n'est pas une recommandation : vérifiez le code et les permissions d'un serveur avant de lui donner accès à vos données.