How does the VAT Return Calculator work?

Box 1 = Net sales × 20% Then: Box 4 = Net purchases × 20% Then: Net VAT = Box 1 − Box 4 Then: Positive: pay HMRC; Negative: HMRC refunds you.

Can you give an example of how to use the VAT Return Calculator?

Example: Input Net sales £60k, purchases £25k, 20% VAT gives a result of Box 1 = £12k; Box 4 = £5k; Pay HMRC £7k.

Is the VAT Return Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the VAT Return Calculator?

Our VAT Return Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

Is this VAT Return Calculator accurate for my country?

This calculator uses general tax principles as a guide. Tax laws vary by country and are updated frequently — always verify with your national tax authority or a qualified tax professional.

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VAT Return Calculator

Net Sales (excl. VAT)

Net Purchases (excl. VAT)

VAT Rate (%)

A UK VAT return calculator computes Box 1 (output VAT charged on sales) and Box 4 (input VAT reclaimed on purchases). The difference is paid to or reclaimed from HMRC.

Symbol	Name	Unit	Description
Sales	Total sales	Currency (ex-VAT)	—
Rate	Standard VAT rate	Percentage (20% UK)	—
OutputVAT	VAT on sales	Currency	—
InputVAT	VAT reclaimed	Currency	—
NetVAT	VAT payable	Currency	—

Rate	Applies to
20% Standard	Most goods and services
5% Reduced	Domestic energy, car seats
0% Zero	Food, children's clothing
Exempt	Finance, healthcare, education

References

›VAT returns — HMRC

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VAT Return Calculator

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VAT Return Calculator