VAT Flat Rate Scheme Calculator
Instantly estimate your quarterly VAT liability and see how much VAT you might retain under HMRC’s Flat Rate Scheme.
Estimate Your VAT Liability
Enter your quarterly VAT-inclusive turnover and your business sector’s flat rate percentage. The calculator instantly compares your Flat Rate Scheme liability against standard VAT accounting.
VAT Flat Rate Estimator
Calculate your quarterly VAT due and potential retained VAT.
Understanding the Scheme
Key factors that influence your VAT position
How Retained VAT Works
You still charge customers the standard 20% VAT. If your flat rate percentage is lower than 20%, the difference between what you collect and what you pay HMRC is your “retained” VAT.
First-Year 1% Discount
HMRC automatically offers a 1% reduction on your flat rate percentage during your first year of VAT registration to help new businesses with cash flow.
Limited Cost Trader Rule
If your business spends less than 2% of turnover on goods (or between 2% and £1,000 annually), HMRC mandates a 12.5% flat rate, regardless of your actual industry.
No Input VAT Reclaims
Unlike standard accounting, you cannot reclaim VAT on day-to-day business purchases. This calculator shows gross retained VAT, not net profit impact.
Standard VAT vs Flat Rate Scheme
Generalised comparisons to help you understand the broader financial implications of each VAT accounting method.
| Feature | Standard VAT Accounting | Flat Rate Scheme | Advantage |
|---|---|---|---|
| Record Keeping | Must track VAT on every single purchase and sale | Only need to track total VAT-inclusive turnover | Flat Rate |
| Input VAT Reclaims | Can reclaim VAT on all eligible business purchases | Cannot reclaim VAT on purchases (except specific capital assets) | Standard |
| Best For | Businesses with high overheads, stock, or equipment costs | Service businesses with minimal purchases (e.g., consultants) | Depends on Model |
| HMRC Incentives | None | 1% discount on flat rate in the first year of registration | Flat Rate |
VAT Flat Rate FAQ
Answers to the most frequently asked questions about HMRC’s VAT Flat Rate Scheme.
The calculator takes your VAT-inclusive quarterly turnover and applies your industry’s specific HMRC flat rate percentage. It then compares the VAT due to HMRC against the standard VAT you collect from customers, showing your estimated retained VAT or extra cost.
A limited cost trader is a business that spends less than 2% of its VAT-inclusive turnover on goods, or between 2% and £1,000 per year. These businesses must use a higher flat rate of 12.5%, regardless of their actual industry sector, to prevent abuse of the scheme.
Yes. You must still charge your customers the standard 20% VAT (or the appropriate standard/reduced rate) on your invoices. The flat rate percentage is only used to calculate the simplified amount you pay over to HMRC.
Yes. In your first year of VAT registration, HMRC offers a 1% reduction on your flat rate percentage. This calculator automatically applies this discount if you select the ‘First year of registration’ option.
Generally, no. However, there is an exception for single capital assets costing £2,000 or more (including VAT). You can reclaim the VAT on these specific high-value items even while on the Flat Rate Scheme.