VatMainderVatMainder Terms of Service
Last updated: 28 October 2026
These terms are an agreement between you and Binary Castle ("we"), the maker of VatMainder. By using VatMainder you agree to them. If you don't agree, please don't use the app.
What VatMainder does
VatMainder helps sole traders and small businesses keep their invoices, receipts and VAT and income tax deadlines in one place. It records what you enter or scan, does the arithmetic and reminds you of deadlines.
Not tax, legal or financial advice
- Every VAT and tax figure in VatMainder is an estimate worked out from what you recorded. It can be wrong or incomplete: a receipt read wrongly, an invoice left out, a rate or rule that has changed, or a situation the app doesn't cover.
- VatMainder isn't an accountant, tax advisor or lawyer, and nothing in it is advice. For advice about your own situation, ask an accountant or your tax authority.
- VatMainder never files a return or pays tax for you. You're responsible for what you file and pay, and for checking every figure in your tax authority's own service (in Finland, OmaVero) before you submit it.
- Keeping the bookkeeping records the law requires of your business is your responsibility. VatMainder is not bookkeeping software in the legal sense.
Your data
Everything you add stays on your phone. There is no account and no server, and we never see your data: see the Privacy Policy. Because your data is only on your phone, backing it up is up to you. If the phone is lost or broken without a backup, we can't recover it.
Paid features
Some features may need a subscription or a one-time purchase, bought through the App Store or Google Play. They handle payment, renewal, cancellation and refunds under their own terms. A subscription renews automatically until you cancel it in your store account's settings.
Using VatMainder
We give you a personal right to use VatMainder on phones you own or control. Use it only for lawful purposes, and don't copy, resell, reverse engineer or modify it except where the law allows.
Changes
We may change, add or remove features, and update these terms. When a change matters, the app asks you to agree again before you carry on. VatMainder is provided as it is: we work to keep it accurate, but we don't promise it is free of errors or always available.
Liability
- As far as the law allows, we aren't liable for taxes, penalties, late-payment interest, fines or other losses that come from figures you relied on, returns you filed, deadlines you missed or data you lost.
- As far as the law allows, our total liability to you is limited to what you paid for VatMainder in the 12 months before the claim.
- Nothing in these terms limits rights you have under mandatory consumer law, or our liability for intent or gross negligence.
Law
These terms are governed by the laws of Finland. If you use VatMainder as a consumer, you also keep the protection of the mandatory laws of the country where you live.
Contact
Questions about these terms: support@vatmainder.com