About the UK Flat Rate VAT Scheme Calculator
This UK flat rate VAT calculator shows how much VAT you would pay HMRC under the VAT Flat Rate Scheme (FRS) and compares it with normal (standard) VAT accounting. Enter your sales for the period, choose your business type to pick up its HMRC flat rate percentage, and add what you spend on goods and the input VAT you could otherwise reclaim. It applies the limited cost business test automatically and the 1% reduction for businesses in their first year of VAT registration.
It is built for sole traders, contractors, freelancers and small limited companies deciding whether the scheme is worth joining or staying on. Many service businesses with few purchases now fall into the 16.5% limited cost rate, which often makes the scheme more expensive than standard accounting — the comparison shows the difference in pounds for your own figures.
Figures follow HMRC guidance on GOV.UK and VAT Notice 733 as checked in October 2026 (2026–27 tax year): flat rate VAT is a percentage of your VAT-inclusive turnover (including zero-rated and exempt income), you can join if your taxable turnover is £150,000 or less excluding VAT, and you must leave once total income exceeds £230,000. The tool assumes all sales you enter in the first box are standard-rated at 20%. It does not cover single capital asset purchases of £2,000 or more including VAT, whose VAT can still be reclaimed under the scheme.
With the default inputs, the vat payable under flat rate scheme is £15,840.00. Change any value above to recalculate instantly.
How to use the uk flat rate vat scheme calculator
- 1Choose whether you are working on a full year or a single VAT quarter.
- 2Enter standard-rated sales before VAT and any zero-rated or exempt income.
- 3Pick your business type to set the HMRC flat rate percentage.
- 4Enter your spend on relevant goods (including VAT) and the input VAT you could reclaim normally.
- 5Turn on the first-year discount if you registered for VAT less than a year ago.
- 6Compare Flat Rate Scheme VAT with standard VAT to decide which suits you.
Formula and method
Under the Flat Rate Scheme you still charge customers 20% VAT, but instead of paying over output VAT minus input VAT you pay a fixed percentage of your VAT-inclusive flat rate turnover — all your supplies including VAT, plus zero-rated and exempt income. You generally cannot reclaim input VAT on purchases (except capital assets over £2,000 including VAT).
If your spending on relevant goods, including VAT, is less than 2% of flat rate turnover, or more than 2% but less than £1,000 a year, you are a limited cost business and must use 16.5% whatever your trade. Businesses in their first year of VAT registration deduct 1 percentage point from the rate until the day before the first anniversary of registration. Standard accounting is output VAT (20% of standard-rated sales) less reclaimable input VAT.
- FRS turnover
- VAT-inclusive turnover: standard-rated sales × 1.2 plus zero-rated, reduced-rate and exempt income
- Flat rate %
- HMRC percentage for your business type, or 16.5% for limited cost businesses, minus 1% in the first year
- Relevant goods
- Goods used exclusively for the business, including VAT, excluding the HMRC-listed exclusions
Worked examples
IT contractor caught by the limited cost rate
Sales of £80,000 plus £16,000 VAT give flat rate turnover of £96,000. Goods of £600 are below 2% of turnover (£1,920), so the 16.5% limited cost rate applies: £96,000 × 16.5% = £15,840. Under standard accounting the contractor would pay £16,000 − £1,200 = £14,800, so the scheme costs £1,040 more.
IT consultant passing the limited cost test
Spending £3,000 on relevant goods is above the £1,920 threshold, so the IT consultancy rate of 14.5% applies: £96,000 × 14.5% = £13,920. That is £880 less than the £14,800 due under standard accounting.
Hairdresser in first year, one quarter
Quarterly turnover is £20,000 + £4,000 VAT = £24,000. Goods of £1,500 exceed the higher of 2% (£480) or £250, so the hairdressing rate of 13% applies, less the 1% first-year discount: 12%. Flat rate VAT is £2,880 versus £4,000 − £300 = £3,700 under standard accounting, a saving of £820.
Frequently asked questions
What is a limited cost trader for flat rate VAT?+
You are a limited cost business if your spending on relevant goods, including VAT, is less than 2% of your VAT-inclusive flat rate turnover, or more than 2% but under £1,000 a year. Limited cost businesses must use the 16.5% flat rate regardless of their trade sector.
Is flat rate VAT calculated on the gross or net amount?+
On the gross amount. HMRC defines flat rate turnover as all the supplies your business makes including VAT, so the percentage is applied to the VAT-inclusive total, plus any zero-rated and exempt income such as rent.
Who can join the VAT Flat Rate Scheme?+
You can join if you are VAT registered and expect your VAT taxable turnover in the next 12 months to be £150,000 or less, excluding VAT. You must leave if your total income in the year exceeds £230,000. Some businesses, such as those in a VAT group, cannot join.
What counts as relevant goods for the limited cost test?+
Goods used exclusively for your business. HMRC excludes services, capital expenditure, food or drink for you or your staff, goods for resale, leasing or hire, goods for disposal such as promotional items, gifts or donations, and vehicle costs including fuel unless you are in the transport sector.
How does the first-year flat rate discount work?+
If you are in your first year of VAT registration, you reduce your flat rate percentage by 1% until the day before the first anniversary of registration. It applies to the 16.5% limited cost rate too, giving 15.5%.
Can I reclaim VAT on purchases under the flat rate scheme?+
Generally no. The flat rate percentage is designed to allow for VAT on purchases. The exception is a single purchase of capital assets costing £2,000 or more including VAT, on which you can reclaim the VAT separately.
Tax results are estimates based on published rules and simplified assumptions. They are not tax advice — check official guidance or a tax professional for your situation.