Give your AI agent access to tax rates, company finances, property prices, legislation, and economic data. Ask questions in natural language — your agent handles the rest.
{ "mcpServers": { "govdata": { "url": "https://mcp.govdata.dev/mcp", "headers": { "Authorization": "Bearer gd_live_..." } } } }
Connect via MCP — the open standard for AI tool integration.
Add to your config and ask questions in plain English.
UK Government data in your terminal coding workflow.
Connect as a custom action for tax and company lookups.
Use as an extension for Google's AI assistant.
Augment research queries with live UK data.
Streamable HTTP transport works with any MCP-compatible app.
2026-27 rates are live across every calculator, with reference data reaching back to 1990 for Income Tax and National Insurance.
Income tax and take-home calculators support Marriage Allowance transfers and Blind Person's Allowance.
Employee and employer rates for every National Insurance category — standard, apprentices, Freeports, and Investment Zones.
The directors' annual (cumulative) NI method, plus opt-in Employment Allowance on the employer cost calculator.
VAT, Capital Gains Tax, dividend tax, and Corporation Tax answer for every year back to 2020-21.
Every MCP tool and resource is also available as a traditional REST endpoint. Full OpenAPI documentation included.
View API documentation →100 free credits every month. Buy more when you need them — no subscriptions, no commitments.
1 credit
10 credits
100 credits
100 free credits = 100 resource reads or 10 tool calls per month. Resets on the 1st. Purchased credits never expire.
500 credits
5,000 credits
50,000 credits
Need higher volume or a custom arrangement? Get in touch.