OpenAccountants
io.github.openaccountants/openaccountantsOpen-source AI accounting skills verified by licensed accountants (tax, VAT, payroll).
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Score: 100/100
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Tools · 15
Call this first for any tax, VAT/GST, payroll or filing question about a country or US state, such as "how much tax will I pay in Spain", "do I need to register for VAT", "when is my tax return due", …
Find the skill for a specific tax topic by keyword: a deduction, form, regime or rule such as 'home office deduction', 'Schedule C', 'reverse charge', 'crypto capital gains' or 'Beckham regime'. Optio…
Open a skill by slug (from start, search_skills or search_rules) to answer the user's question. Returns the skill's rules and method, its quality tier, the named accountant where one reviewed it, a `s…
Look up tax rates, thresholds and rules in one or many jurisdictions, such as 'VAT rates in MT, IE and DE', 'income tax brackets for 2025' or 'rules mentioning reverse charge'. Returns a bundled markd…
Browse the skills for one jurisdiction or domain (for example every skill for 'MT', or every 'payroll' skill), each with its quality tier and verification status. For a specific topic, search_skills i…
Follow-up to get_skill: fetch sections it listed in `section_index` as not inlined (for example a supplier-pattern library). Pass `section_index` for one section, or omit it to get every section with …
Filing and payment deadlines for a country or US state: 'when is my tax return due', 'when do I file VAT', 'when is the next instalment'. Returns upcoming dates and recurring filing rhythms (monthly V…
Helper for search_rules: lists the values you can filter on (live jurisdictions, domains, roles, rule kinds, statuses, tax years, a sample of topics) and the defaults. Takes no arguments. Use it when …
Call when the user has no tax question yet and opens with 'what can you do?', 'how can you help me?' or 'where do I start?'. Takes no arguments. Returns the two scoping questions plus the available in…
Answers 'which countries do you cover?' or 'what is there for [country]?'. Returns every jurisdiction with published skills (countries as ISO 2, US states as US-XX, Canadian provinces) with skill coun…
Answers 'who reviewed this?' or 'which accountants are behind this?'. Returns the named licensed accountants who have signed off on OpenAccountants jurisdictions, with their credentials and the jurisd…
Call only when the user asks what OpenAccountants charges, requests a quote, or asks whether their current fee is fair. Returns the same published plans, service prices, limits, market exceptions and …
Check live whether an EU VAT number is valid and registered, for example before applying a B2B reverse charge, zero-rating an intra-EU sale or onboarding a supplier. Queries the European Commission's …
Answers 'does my company need an audit?' for a private limited company in Malta (MT, Article 185(2) micro thresholds) or the UK (GB, small-company thresholds before and after 6 April 2025). A determin…
Only when the user asks: sends their feedback, or their request for a person to check or do the work, to OpenAccountants. Two modes. (1) `note`: an anonymized note about the guidance (a gap, a workaro…
Prompts · 13
Load a skill's sections and apply its rules to a specific tax scenario.
Complete tax return workflow — intake interview, transaction classification, working paper generation.
Classify transactions for VAT/GST treatment and produce a VAT return working paper.
Review expenses and identify deductions the taxpayer might be missing.
Collect structured feedback on a skill after the agent has used it.
Compare tax treatment across two or more countries for cross-border planning.
THE prompt for any complex multi-country tax situation. Takes the user's messy description and runs a structured 8-step intake: classify the event, identify jurisdictions, ask the right questions, req…
Full 6-phase workflow for a UK sole trader / self-employed person. Takes the user's facts and produces a complete SA103 working paper: income, expenses, Class 2 + Class 4 NIC, payments on account sche…
Full 6-phase workflow for a US self-employed person / sole proprietor filing Schedule C. Produces a complete working paper: gross income, expense deductions, net profit, SE tax (Schedule SE), QBI dedu…
Full 6-phase workflow for a South African individual taxpayer filing an ITR12. Built on the OA library's South African income tax skills (za-income-tax + za-provisional-tax), reviewed by a named accou…
Full 6-phase workflow for a Portugal self-employed person (trabalhador independente) under the simplified regime or organised accounting. Covers IRS Modelo 3 / Anexo B, social contributions (TSU), and…
Full 6-phase workflow for a UK individual with capital gains to report on SA108. Covers shares (section 104 pool), crypto (HMRC pool-averaging rules — NOT FIFO), residential property (60-day reporting…
Full 6-phase workflow for a Malta self-employed person or part-time freelancer. Critical flag: the TA22 part-time rules 10% flat rate on the first €12,000 of net part-time SE profit (file + pay by 30 …
How to use
Add to your Claude Desktop / Cursor / Cline MCP config:
{
"mcpServers": {
"openaccountants": {
"url": "https://www.openaccountants.com/api/mcp",
"transport": "streamable-http"
}
}
}