Duty27Keep 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 checkout you already control — Stripe, Mollie, Klarna, or your own — no revenue cut, no new payment processor, no giving up the customer relationship.
Free tier planned. No credit card required.
Sourced directly from the European Commission's TEDB. Every response will carry its rate source and effective date — built to hold up under audit, not just at 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 then — not the rate that applies today. 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.
Real-time rate calculation, all 27 member states
One call, correct rate — for digital goods and services, across every EU member state.
B2C and B2B in one API
Reverse-charge is determined automatically for validated business buyers — no separate B2B code path to maintain.
€10,000 threshold, handled for you
Applies your home-country rate or the buyer's destination rate correctly, based on cumulative EU-wide sales — you don't track the threshold yourself.
Reduced-rate categories
Country-specific exceptions — digital publications and similar categories — instead of a blanket standard-rate assumption that's wrong for them.
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
Not a bolted-on separate step, and not a bare yes/no. If the validation service is down, that's returned as its own explicit outcome — so checkout can hold and retry instead of guessing wrong in either direction.
An audit trail, not just a number
Every response will carry the rate's source and effective date, sourced directly from the European Commission's TEDB — not a resold or aggregated feed.
A calculation layer, not a new checkout.
Paddle, Lemon Squeezy, and similar
They become the legal seller of your product. Checkout routes through them — replacing your existing Stripe setup — and they take a cut, commonly 3.5–7%+ per transaction.
Stripe Tax
Calculates tax within Stripe Checkout or Billing, on top of Stripe's normal processing fees. You still configure registrations, product tax codes, and tax-ID collection yourself.
Registrations, filings, bookkeeping
Real, valuable, human-assisted work. But it's not a developer tool, and it's not something a checkout flow can call in real time.
Self-serve, API-first, yours
Plugs into a checkout you already control. No revenue cut, no new payment processor — keep your existing Stripe account — and no giving up the direct customer relationship.
Metered by calculation volume — never by revenue.
Your bill will move with usage, not with your product price or your margins. Exact tiers are still being finalized — get in touch and we'll let you know as soon as signups open.
If you already run your own checkout, this is for you.
Indie & small-to-mid EU sellers
Selling digital goods or services who don't want or need 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.
Want to be first in line when we launch?
Tell us a bit about what you're building and we'll reach out the moment signups open — no spam, no sales calls until you ask for one.