Terms of service

Last updated: November 4, 2026

Who we are

What we offer

Calculators for Germany, Austria, Belgium, Japan and the United Kingdom. Each one reads your Interactive Brokers statements and shows the figures your tax return needs, with a line-by-line breakdown. Your statements are processed in your browser and never uploaded.

The free preview shows what we read from your statements and which boxes you’ll fill in, without the figures.

The pass

A pass is a one-time payment for one country’s calculator for the 2027 filing season. It’s valid through December 31, 2027. There’s no subscription and nothing renews.

While your pass is valid, you can rerun the calculator as often as you like. Updates for the official 2026 forms are included. A pass is for your own tax return; please don’t share your account.

Buying a pass

Checkout runs on Link, Stripe’s payment service. Link sells the pass on our behalf, charges any sales tax or VAT that applies, and emails your receipt. Link’s own terms apply to the payment. Prices on this site include tax.

Refunds and your right to cancel

You can get a full refund anytime before you reveal your figures, as long as the pass hasn’t expired. To ask for one, email atary@ataryc.com.

Before your figures are shown, we ask you to confirm that you want the service to start now and that you understand you lose your right to cancel and to a refund. Once you confirm, the pass counts as used.

After that, we don’t refund the pass, unless our calculation turns out to be wrong. If it is, we’ll fix it and, if you ask, refund the pass.

Not tax advice

The calculators apply the published rules to the data in your own statements and show where you have to make a choice. They don’t replace an accountant or tax adviser. Check the figures before you use them; you’re responsible for your tax return, and your tax authority has the final word.

We aren’t affiliated with Interactive Brokers or any tax authority. “IBKR” is a trademark of its owner.

Liability

We build and test the calculators carefully. If a statement contains something a calculator doesn’t support, it tells you instead of guessing.

We’re fully liable for intent and gross negligence, and for injury to life, body or health. For slight negligence, we’re only liable if we breach an essential obligation of this contract, and then only for the damage that’s typical and foreseeable for a contract like this. Liability that can’t be limited by law, and your statutory rights as a consumer, aren’t affected.

Your account

You sign in with a one-time code sent to your email, or with Google. You can delete your account anytime by emailing us. We may suspend an account that’s used to share passes or to attack the service.

Changes to these terms

We may update these terms for future purchases. The terms in force when you bought a pass apply to that pass.

Law and disputes

These terms are governed by the law of England and Wales. If you’re a consumer, you also keep the protection of the mandatory rules of the country where you live, and you can bring a claim in the courts there. If something goes wrong, please email us first: atary@ataryc.com.