VAT Flat Rate Scheme Calculator & Decision Guide
Compare a simplified Flat Rate Scheme illustration with standard VAT accounting, then identify the questions that need an accountant or current HMRC guidance.
The Flat Rate Scheme can simplify VAT accounting: you pay HMRC a fixed percentage of gross turnover and generally cannot reclaim purchase VAT, except in limited circumstances. This is an illustration only; sector classification, limited-cost-trader treatment, mixed supplies, capital assets and eligibility can materially change the answer.
Effective Flat Rate used: 14.5%. Under the standard method, output VAT is £20,000 before input-VAT recovery.
Decision checks before choosing a VAT method
| Question | Why it matters |
|---|---|
| Is VAT turnover £150,000 or less excluding VAT? | This is the general entry threshold cited by HMRC; projected and actual turnover still need checking. |
| What is your official sector percentage? | The correct Flat Rate depends on the business classification, not a rate chosen for a favourable illustration. |
| Are you a limited-cost trader? | A different Flat Rate can apply; this simple toggle is a warning, not a classification test. |
| Do you buy stock, equipment or services with significant input VAT? | The standard method may produce a different result because input VAT is ordinarily recovered there. |
Worked example
A service business with low recoverable input VAT may find the Flat Rate Scheme easier to administer, while a business buying stock or taxable services may value standard-method recovery. The useful question is not only which figure is lower in one period, but how the method fits your sector, purchases, records and expected turnover.
This tool does not determine sector classification, limited-cost-trader status, capital-goods treatment, partial exemption or scheme eligibility. Review current HMRC guidance and ask an accountant before joining, leaving or changing accounting methods.
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Information on this page is general guidance for UK small businesses and is not financial, tax or legal advice. Tax rules, allowances and product terms change. Always check current information with HMRC, Companies House or a qualified professional before making decisions.