Duty27™Keep your Stripe account.
Keep your accountant.
Just get the VAT math right.
Duty27 is a calculation layer, not a Merchant of Record. It plugs into the checkout you already control, whether that's Stripe, Mollie, Klarna, or your own. There's no revenue cut, no new payment processor, and the customer relationship stays yours.
No credit card required.
Sourced directly from the European Commission's TEDB. Every response carries its rate source and effective date, so a calculation holds up in an audit long after checkout.
A rate isn't one number. It's a number with a start date.
Rates change. Refunds and credit notes issued against a past sale need the rate that applied on the day of that sale. Duty27 is built around effective-dated windows from the start, so a correction six months later resolves to the same rate the original sale used.
Every entry in the ledger, accounted for.
Real-time rate calculation, all 27 member states
One call returns the correct rate for digital goods and services in every EU member state.
B2C and B2B in one API
Reverse charge is determined automatically for validated business buyers, so there's no separate B2B code path to maintain.
€10,000 threshold, handled for you
On accounts with transaction tracking enabled, Duty27 applies your home-country rate or the buyer's destination rate based on cumulative EU-wide sales, so you don't track the threshold yourself. Opt-out available, per Article 59c(3).
Reduced-rate categories
Country-specific exceptions for e-books, newspapers, and periodicals, where a blanket standard rate would be wrong.
Tax-inclusive or tax-exclusive, explicitly
You state which one you're sending. No silent assumption either direction.
VAT number validation, built into the flow
Validation runs inside the calculation flow and returns more than a bare yes or no. If the validation service is down, you get that back as its own outcome, so checkout can hold and retry instead of guessing.
The source and date travel with every rate
Every response carries the rate's source and effective date, taken directly from the European Commission's TEDB rather than a resold or aggregated feed.
Four ways to handle EU VAT, compared.
Paddle, Dodo Payments, and similar
They become the legal seller of your product, and checkout moves to them, replacing your existing Stripe setup. In exchange for handling tax, invoicing, payment processing, and remittance end to end, they take a cut, commonly 3.5–7%+ per transaction.
Registrations, filings, bookkeeping
Real, valuable, human-assisted work. But it isn't a developer tool, and a checkout flow can't call it in real time. Onboarding takes weeks.
Stripe Tax
Calculates tax within Stripe Checkout or Billing. Costs 0.5% of transaction value (no-code) or €0.50/transaction via API, on top of Stripe's normal processing fees. You still configure registrations, product tax codes, and tax-ID collection yourself.
Self-serve, API-first, full control
Plugs into a checkout you already control, and you keep your existing Stripe account. Integrate in an afternoon. Native support for the EU's Article 98(3) digital-publication exception (Annex III, point 6) covers e-books, newspapers, and periodicals, beyond Stripe Tax's generic tax-code mapping. When a sale needs to be provable months later, the record is already there: evidence type, OSS scheme, and exchange rate, all captured at the time of sale.
Usage-based pricing. Zero revenue share.
Metered by calculation volume, never by revenue.
Your bill moves with usage alone. Raising your prices or widening your margins doesn't change it.
500 calculations/month. No credit card required.
5,000 calculations included. €0.00234 per additional call. No per-seat charges.
50,000 calculations included. €0.00127 per additional call. Same model, lower unit rate at volume.
| Feature | Free | Growth | Scale |
|---|---|---|---|
| Price | €0/mo | €9/mo | €49/mo |
| Calculations included | 500/mo (hard cap) | 5,000/mo | 50,000/mo |
| Additional calls | Blocked over cap | €0.00234/call | €0.00127/call |
| API rate limit | 10 req/min | 60 req/min | 300 req/min |
| Audit-ready archive + EU OSS reporting | — | Add-on (€19/mo) | Included |
Every archived transaction is stored the moment you send it, as a record no one can alter or delete for 10 years, Duty27 included: evidence type, OSS scheme, payment method, and the exchange rate used, all captured up front. Refunds are tracked separately and attributed to the correct filing quarter automatically, per EU correction rules, so a refund is never netted into the wrong period. Quarterly reports are generated on demand; you get a notification the moment one is ready, and the report itself stays behind your login.
Need a custom plan, volume pricing, or invoicing instead of a card on file? Contact Sales
If you already run your own checkout, this is for you.
EU sellers & global exporters
Selling digital goods to European customers without needing a full Merchant of Record.
Owners of their own stack
Already invested in Stripe, Mollie, Klarna, or another processor, and not interested in rebuilding checkout to get tax right.
High-volume SaaS & digital platforms
Scales predictably with usage calls instead of taking a percentage cut off your top-line revenue as MRR grows.
Get the VAT math right, without giving anything else up.
The free tier is enough to fully integrate and test, and it needs no credit card.