What is the Flat Rate Scheme and is it worth using?

The Flat Rate Scheme lets businesses with turnover below £150,000 pay HMRC a flat percentage of VAT-inclusive turnover (varies 9-16.5% by sector) instead of the usual input/output VAT calculation. You charge customers VAT at standard rate, pay the flat percentage, and generally cannot reclaim input VAT (with limited exceptions). Since 2017 introduction of the "limited cost" 16.5% rate for businesses with low goods spend, the scheme has been less attractive for service businesses (consultants, designers, agencies). Worth modelling before opting in.

Can we reclaim VAT on costs from before we registered?

Yes, within specific limits. Pre-registration VAT on goods is recoverable for goods purchased up to 4 years before registration that are still on hand or have been used in the business. Pre-registration VAT on services is recoverable for services received up to 6 months before registration. The reclaim is made on the first VAT return after registration, on a separate "pre-registration" element.

How do place-of-supply rules work for SaaS?

For B2B digital services, the place of supply is usually where the customer is based — meaning UK-VAT does not apply to B2B sales to overseas customers (the customer accounts for VAT under their local reverse-charge rules). For B2C digital services to consumers in the EU, the UK seller has to register for and collect VAT in each EU member state where they sell, or use the One Stop Shop (OSS) scheme to handle the obligations through a single registration. For B2C digital services to non-EU consumers, generally outside UK VAT scope.

What happens during a VAT inspection?

HMRC inspectors review your VAT records (invoices, returns, ledgers, bank reconciliations) for the period under review (usually 4 years). They check the consistency between returns and underlying records, sample-test specific transactions, check the application of rates (standard, reduced, zero, exempt) on sample sales, and assess whether the business has correctly applied any specific rules (Flat Rate, Cash Accounting, partial exemption). Where errors are found, HMRC issues an assessment for back VAT plus interest plus penalties depending on behaviour.

Should a SaaS startup register voluntarily?

Most B2B SaaS startups should register voluntarily before hitting the threshold. The reasons: input VAT recovery on tooling and professional services is material; VAT-registered status is expected by enterprise customers performing supplier checks; the administrative cost is modest with modern accounting software; and the alternative (registering at the threshold and back-dating) is messier than registering early. B2C SaaS targeting price-sensitive consumers often delays voluntary registration to keep prices lower until threshold mandates it.

UK Startup VAT Guide 2026 | Voluntary Registration, Flat Rate, MTD, SaaS

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When should a UK startup register for VAT?

A UK startup must register for VAT when taxable turnover exceeds £90,000 over a rolling 12-month period (or is expected to exceed £90,000 in the next 30 days alone). Many B2B startups register voluntarily before hitting the threshold to recover input VAT on costs (R&D tooling, professional services, software) and to signal credibility to enterprise customers. B2C startups generally wait until the threshold because VAT registration adds 20% to consumer-facing prices. Digital services sold internationally have specific place-of-supply rules that can mandate registration at lower thresholds, particularly for sales into the EU.

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Company Formation

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The Startup Guide to VAT

When should a UK startup register for VAT?

Find a specialist in your city

§ LONDON & SOUTH EAST

§ MIDLANDS

§ NORTH WEST

§ NORTH EAST & YORKSHIRE

§ SOUTH WEST & WALES

Ready to claim yourstartup vat?

Continue with another guide

Company Formation

R&D Tax Credits

SEIS & EIS

Startup Tax Relief

Cash Flow Forecasting

Growth Planning

Ready to claim your
startup vat?