Tax Numbers
US tax figures, VAT, sales tax
Get the US federal tax numbers right, with the IRS document each one comes from. Ask "what are the 2026 tax brackets for a married couple?", "what is the standard deduction for head of household?", "what was the IRS mileage rate on 15 March?", "when is the next estimated tax payment due?" or "roughly how much federal tax on $90,000 of wages and $30,000 of freelance income?". Tax Numbers holds the federal income tax figures for tax years 2025 and 2026: brackets, standard deduction, long-term capital gains thresholds, the Social Security wage base and self-employment tax, 401(k) and IRA limits, the standard mileage rates, and the filing and estimated-payment deadlines. Every figure comes with the Revenue Procedure, notice or IRS page it was read from, and every answer says when the table was last verified. A year is added only after all of its figures have been checked. It can also work out a simple federal estimate: standard deduction only, with self-employment tax, long-term capital gains and the Additional Medicare Tax. Every estimate lists its assumptions and what it leaves out (credits, state tax, alternative minimum tax, itemized deductions and more), and says it is an estimate and not tax advice. It also answers a seller's question about registration: tax_duty takes where you sell from, where your buyers are (an EU country, the United Kingdom or a US state), what you sell and your yearly sales, and says whether you must register, the limit, the standard rate and how often you file. Every answer links the official tax authority page it comes from, shows the day that page was read and ends with a note to check with an accountant. It covers the 27 EU member states with the One Stop Shop limit of 10,000 EUR, the United Kingdom and 14 US states. A place that is not in the table gets an explicit not covered answer with the list of places that are, never a guess. Reduced rates, local taxes, sales to businesses and domestic limits inside an EU country are not included. It does not fill in or file returns, give advice on what to do, or cover US state income tax. Your figures are used for the one calculation and are not stored; the only lasting record is a daily count of calls per tool.
What you can ask
- What is the 2026 standard deduction for a single filer?
Example path
MCP connector
- Server URL
https://tax.openkrill.app/mcp- Login
- None
- Protocol
- MCP 2026-07-28
- Instructions
Tax Numbers: US tax figures, VAT, sales tax. Use for published federal figures (brackets, standard deduction, capital gains thresholds, self-employment tax, retirement limits, the estate and gift tax basic exclusion amount, mileage) and quote the figure with its source document. Use for the standard mileage rate on a date, for filing and estimated-payment dates, and for a rough federal figure. Never use remembered figures: tax numbers change yearly, so always call a tool. Ask for the tax year and filing status if the user did not give them; never guess them. If a result has status unsupported_year or not_available, tell the user which years are available and do not substitute another year. Status amended means a figure changed after first release; mention it when it matters. With every estimate, say it is an estimate and not tax advice, and say what the not_included list leaves out. Use when a seller asks whether to register for VAT or sales tax in an EU country, the United Kingdom or a US state: pass seller_country, buyer_place (write a US state as US-TX; a bare CA means Canada), product_kind and yearly_sales in the buyer place's currency (leave it out when the user gave no figure, never send 0). Quote must_register, the threshold, the rate and the filing rhythm with the source link and its checked date, and always repeat the not_tax_advice line. If status is not_covered, show the covered places; if must_register is unclear, say what is unclear and suggest an accountant. If stale_data is true, say the table is overdue for a check. Never fill a gap from memory. The other tools cover US federal tax only: they do not cover state tax, file or prepare a return, or advise on what the user should do. This server allows 60 tool calls a minute per network and 5,000 a day for all callers together; the day count resets at 00:00 UTC. If a tool fails, gives a wrong answer, or a tool you need is missing, call with one short message (kind, message, tool); reads the answer.
Tools
Reads data6
Changes data1
Skills
None in the store listings or on the server