Small UK businesses on, or considering, the VAT flat rate scheme, and the bookkeepers who have to show why the payable figure is what it is.
Jak działa
- Enter your net turnover, the VAT rate you charge and your trade's flat rate.
- Read the payable figure against what the same percentage gives on the net — that difference is the usual error.
- Enter the input VAT you would have reclaimed and compare the two schemes against the break-even.
- Enter your spending on goods to see which side of the goods test you are on, and by how much.
Co zyskujesz
- Tells you the exact point of input VAT at which the UK flat rate scheme stops paying off, comparing both schemes on your own turnover instead of a rule of thumb.
Zrzut ekranu

Szczegóły techniczne
Jak zaczac i uzywac
- Kup licencje — klucz (lic_...) pojawi sie na stronie zamowienia i w e-mailu.
- Zaloguj sie na app.synoriaai.com kluczem licencji.
- Bez instalacji — produkt dziala w przegladarce, na Twojej izolowanej instancji.
- 1. Enter your VAT-inclusive turnover and the VAT rate.
- 2. Enter the flat rate percentage for your trade, and choose whether this is your first year of VAT registration.
- 3. Click 'Calculate' to see the flat rate payable on the gross amount, alongside what the same percentage would give on the net figure, and the difference between them.
- 4. Enter your input VAT (VAT you can reclaim) to see the break-even point where the flat rate scheme stops being beneficial compared to standard VAT accounting.
- 5. Review the results, including the goods test check and the self-check that VAT charged equals VAT paid over plus VAT kept.
Najczęstsze pytania
Does this tool store my turnover or VAT figures?
No. All calculations happen in your browser. We do not save or transmit any of the numbers you enter.
What does the 'goods test' do?
It checks if you spend enough on goods (as a percentage of gross turnover) to stay on your current flat rate. If you fall below the threshold, the tool shows how far short you are, because that would move your entire turnover to the higher limited cost rate.
Does this tool give me tax advice or guarantee my VAT return is correct?
No. It performs arithmetic based on the rates and figures you enter. It does not account for every possible rule or edge case. Always confirm with HMRC or a qualified accountant before submitting your return.
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