Open-source Tax Guides for AI agents, reviewed by named CPAs/CAs/EAs. 1,000+ Guides across 190+ jurisdictions. MCP server included. Works with Claude, ChatGPT, Cursor.

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Medusa + OpenAccountants: a drop-in tax provider with destination-correct US state+local rates — filling the gap Medusa's own docs flag. Accountant-signed.

Deel + OpenAccountants: the tax risk behind each global contractor — misclassification/PE, 1099, W-8BEN, withholding. Accountant-signed.

QuickBooks + OpenAccountants: is each transaction coded right for tax? Catches capitalize-vs-expense, meals 50%, personal-in-business — accountant-signed.

Shopify + OpenAccountants: which states do you now owe sales tax in? Post-Wayfair economic-nexus checks across your sales — accountant-signed, no signup.

crypto + OpenAccountants: which moves are taxable? Swaps, spends, rewards and sales from your wallet/exchange history — accountant-signed, no signup.

beancount + OpenAccountants: how is each realized gain actually taxed? Short vs long term from your plain-text ledger — accountant-signed, no signup.

Finch + OpenAccountants: is the payroll withholding correct? Recomputed FICA across 200+ payroll systems via one aggregator — accountant-signed.

Stripe + OpenAccountants: is the VAT/GST on the sale right? Place of supply across 190+ jurisdictions, where Stripe Tax goes quiet — accountant-signed.