VAT Flat Rate Scheme Calculator
Estimate the VAT you’d pay HMRC under the Flat Rate Scheme, and compare it against standard VAT accounting to see which suits your business better. Figures are illustrative planning estimates, not a substitute for advice from an accountant or HMRC.
Flat Rate Scheme Breakdown
Flat Rate Scheme vs Standard VAT Accounting
Standard accounting comparison assumes all entered turnover is charged at the selected VAT rate.
VAT Flat Rate Scheme Calculator (UK)
Our VAT Flat Rate Scheme Calculator is a planning tool for small businesses that are on, or considering, HMRC’s Flat Rate Scheme (FRS). It estimates the VAT you’d pay to HMRC under the scheme and compares it against an estimate of what you’d pay under standard VAT accounting, so you can see roughly how the two methods compare for your business. This is an illustrative estimate, not tax advice — always check your figures with an accountant or HMRC.
What Is the VAT Flat Rate Scheme?
The Flat Rate Scheme lets eligible VAT-registered businesses pay VAT to HMRC as a fixed percentage of their gross (VAT-inclusive) turnover, instead of working out the difference between VAT charged on sales and VAT reclaimed on purchases. The percentage depends on your trade sector and is set by HMRC. Businesses on the scheme generally cannot reclaim VAT on most purchases, with limited exceptions for certain capital assets.
How to Use This Calculator
- Enter your VAT-inclusive turnover for the period you’re calculating (quarterly, monthly or annual).
- Enter your sector’s flat rate percentage — look this up on the current GOV.UK flat rate list, as rates vary by trade and are reviewed periodically.
- Check the standard VAT rate field is correct for your sales — it defaults to 20% but is editable.
- Flag limited cost business status if it applies — HMRC applies a fixed 16.5% rate regardless of sector in this case.
- Flag first-year registration if applicable, for the 1 percentage point discount.
- Enter an estimate of input VAT you’d otherwise reclaim on purchases, to build the standard-accounting comparison.
- Click Calculate to see your results.
What Is a “Limited Cost Business”?
HMRC classes you as a limited cost business if your VAT-inclusive spending on goods (not services) is below certain thresholds — broadly, less than 2% of your turnover, or less than a fixed minimum amount per period, whichever is higher. Limited cost businesses pay a flat rate of 16.5% regardless of their trade sector, which for many service-based businesses works out close to standard VAT accounting. Check your status against the current thresholds on GOV.UK, as this calculator does not determine eligibility for you.
Flat Rate Scheme vs Standard VAT Accounting
| Feature | Flat Rate Scheme | Standard VAT Accounting |
|---|---|---|
| VAT calculation | Fixed % of gross turnover | Output VAT minus input VAT |
| Reclaiming VAT on purchases | Generally not allowed* | Allowed on eligible purchases |
| Admin burden | Simpler record-keeping | More detailed VAT records needed |
| Best suited to | Low-cost, service-based businesses | Businesses with significant reclaimable VAT on purchases |
*Capital assets costing more than GBP2,000 (including VAT) may still be eligible for a separate VAT reclaim under the scheme — check current rules on GOV.UK.
Who Can Join the Flat Rate Scheme?
Eligibility is based on your VAT-taxable turnover, and there are separate thresholds for joining and for having to leave the scheme. These thresholds are reviewed by HMRC and can change, so this calculator does not hardcode them. Always check current eligibility limits and the join/leave process on GOV.UK before applying.
Frequently Asked Questions
Is the Flat Rate Scheme always cheaper than standard VAT accounting?
No. Whether the Flat Rate Scheme saves you money depends on your sector’s flat rate percentage and how much VAT you’d otherwise reclaim on purchases. Businesses with low overheads and few VAT-able purchases often benefit; businesses with significant reclaimable input VAT may pay more under the scheme. Use the comparison in this calculator as a starting estimate, then review with an accountant.
Can I still reclaim VAT on anything while on the Flat Rate Scheme?
Generally you can’t reclaim VAT on day-to-day purchases while on the scheme, since the flat rate percentage is designed to account for this. There’s a specific exception for certain capital expenditure goods costing more than GBP2,000 including VAT, which may still be reclaimable — check the current rules on GOV.UK.
What happens in my first year on the scheme?
HMRC gives a 1 percentage point discount off your sector’s flat rate for the first year you’re registered for VAT, provided you’re still within that 12-month period. This calculator applies that discount when you flag first-year registration.
What is the limited cost business rate?
If your spending on goods is very low relative to your turnover, HMRC treats you as a “limited cost business” and applies a fixed 16.5% flat rate instead of your sector rate. This mainly affects service-based businesses with minimal goods purchases, such as consultants or contractors. Check the current thresholds on GOV.UK, as this calculator does not assess eligibility for you.
Do I still charge VAT normally to my customers on the Flat Rate Scheme?
Yes. You continue to charge VAT to customers at the standard, reduced or zero rate as normal and issue VAT invoices as usual. The Flat Rate Scheme only changes how you calculate what you pay to HMRC — it does not change what you charge customers.