VAT Registration UK 2026/27: £90,000 Threshold, HMRC Rules & How to Register

Quick answer: a UK-established business generally must register for VAT when its taxable turnover for the previous rolling 12 months goes above £90,000, or when it expects taxable turnover to exceed £90,000 in the next 30 days alone. Businesses below the threshold can often register voluntarily. Businesses established outside the UK can face different rules and may need to register regardless of turnover.

VAT registration should not be treated as a once-a-year check. The main historic threshold uses a rolling 12-month period, so a business should monitor taxable turnover as it trades. Registration timing matters because VAT may become due from the effective date even if the business submitted its application late.

The registration decision also affects pricing, invoices, bookkeeping, cash flow, VAT recovery and Making Tax Digital. The safest approach is therefore to identify the correct registration date first, then build the accounting process around it.

When must a business register for VAT?

For a business within the normal UK-established registration rules, there are two principal compulsory-registration tests.

HMRC’s official VAT registration guidance should be used whenever the business is near the threshold or has an unusual trading model.

The £90,000 VAT threshold is a rolling test

One of the most common VAT mistakes is checking turnover only when annual accounts are prepared.

The normal historic test looks at taxable turnover over the previous 12 months. Each month, the business should consider the latest 12-month total.

Example: suppose taxable sales for the 12 months ending 31 August reach £92,000 for the first time. The business has exceeded the threshold even if its accounting year does not end until December or March.

HMRC generally requires registration within 30 days of the end of the month in which the threshold was exceeded. The effective date of registration is normally the first day of the second month after the business went over the threshold.

For example, HMRC illustrates a business going above the threshold during July, registering by 30 August and having an effective registration date of 1 September.

The calculation should therefore be built into monthly bookkeeping rather than reconstructed after year end. Britvex’s Bookkeeping service can keep taxable turnover visible as part of the underlying accounting records.

The separate next-30-days test

There is another compulsory test that businesses sometimes miss.

If you realise that your taxable turnover in the next 30 days alone will exceed £90,000, registration can be required immediately under the forward-looking rule.

This can matter where a business wins a large contract, completes a major project, begins a substantial supply arrangement or receives an unusually large taxable order.

Under this test, the business normally has until the end of that 30-day period to submit its registration application, but its effective date of registration is the date it first realised the threshold would be exceeded.

Example

A consultancy normally invoices £10,000 per month but signs a firm £110,000 taxable contract to be supplied within the next 30 days. Waiting for its rolling 12-month turnover to pass £90,000 may be incorrect because the separate forward test can already have been triggered.

This distinction matters because the effective date determines when the business must begin accounting for VAT.

What counts as taxable turnover?

The £90,000 threshold is based on VAT taxable turnover, not accounting profit and not simply money received into the bank account.

Taxable turnover generally includes supplies that are:

• standard-rated;
• reduced-rated; and
• zero-rated.

Zero-rated sales still form part of taxable turnover even though VAT is charged at 0%. This is an important difference from exempt supplies.

Depending on the facts, taxable turnover can also include other amounts identified by HMRC, such as certain reverse-charge transactions, goods taken from the business for private purposes and other taxable supplies.

Profit is not the VAT threshold

A business can make £95,000 of taxable sales and only £20,000 of profit. It may still exceed the VAT registration threshold because the test is based on qualifying turnover, not profit after expenses.

Zero-rated does not mean exempt

A business selling zero-rated products can still need VAT registration because zero-rated supplies are taxable supplies.

By contrast, a business making only exempt or outside-the-scope supplies may not be required to register under the normal taxable-turnover test.

Classification must therefore be established before turnover is measured.

Voluntary VAT registration below the threshold

A business does not always need to wait until turnover reaches £90,000. Voluntary VAT registration can be appropriate where the business makes or intends to make taxable supplies.

Possible reasons include:

• recovering VAT on eligible business expenditure;
• significant startup equipment or stock purchases;
• dealing mainly with VAT-registered business customers;
• preparing for expected growth above the compulsory threshold;
• establishing a VAT process before major trading begins; or
• commercial requirements within a particular supply chain.

But voluntary registration is not automatically beneficial.

A business selling mainly to consumers may need either to increase prices or absorb VAT from its existing selling price. It also takes on VAT invoicing, records, return and Making Tax Digital obligations.

Simple pricing illustration

Suppose a service business charges a consumer £1,000 before registration.

If the supply is standard-rated and the business later charges £1,000 plus VAT, the customer pays £1,200.

If market conditions prevent the business increasing its £1,000 customer price, £1,000 VAT-inclusive revenue contains approximately £166.67 of output VAT at the standard 20% rate.

That commercial pricing effect should be modelled before voluntary registration is chosen.

Overseas businesses and UK VAT registration

The £90,000 threshold is not a universal protection for businesses established outside the UK.

HMRC states that a business may need to register regardless of taxable turnover where:

• the person is based outside the UK;
• the business is based outside the UK; and
• it supplies, or expects to supply, goods or services to the UK within the applicable rules.

International VAT can also depend on place-of-supply rules, whether the customer is a business or consumer, imports, exports, reverse charge treatment, fulfilment arrangements and whether goods are located in Great Britain or Northern Ireland.

An overseas company should therefore avoid assuming: “our UK sales are below £90,000, so there can be no UK VAT registration.”

Britvex can review the UK side of cross-border trading alongside business setup and recurring accounting requirements. HMRC’s detailed rules for non-established taxable persons should be checked for the exact supply.

How to register for VAT with HMRC

Most businesses can register online through HMRC.

Limited company information

A company application normally requires information including:

• Companies House registration number;
• business bank details;
• Unique Taxpayer Reference where applicable;
• annual turnover;
• estimated taxable turnover for the next 12 months;
• Corporation Tax information;
• PAYE information where relevant; and
• details of the business activity and supplies.

Sole trader or partnership information

An individual or partnership application can require items such as:

• National Insurance number;
• identity documentation;
• bank details;
• UTR where available;
• annual and expected taxable turnover;
• Self Assessment information; and
• supporting income or employment information where requested.

The application should reflect the actual legal entity carrying on the business. A sole trader’s VAT registration should not simply be reused as though it automatically belonged to a subsequently incorporated company.

HMRC’s official registration process is set out in its VAT registration instructions.

What happens after VAT registration?

Once HMRC completes registration, the business receives information including:

• a 9-digit VAT registration number;
• the effective date of registration;
• information about the first VAT Return;
• the relevant VAT accounting periods; and
• access instructions for VAT services.

From the effective registration date, the business needs to account for VAT correctly on taxable supplies.

The VAT number should appear on VAT invoices. The bookkeeping system should also be configured with the correct VAT codes and registration details.

A business waiting for HMRC to issue its registration number should not simply ignore the economic VAT liability arising from its effective date. Pricing and invoices during the registration-pending period require careful handling.

Newly registered businesses are now generally signed up to Making Tax Digital for VAT automatically by HMRC unless exempt or an exemption application applies.

VAT rates, zero-rated and exempt supplies

The main UK VAT rates are currently:

Businesses should not guess VAT treatment from the ordinary description of a product or service. Food, property, construction, education, health, finance, exports, digital services and mixed supplies can all contain specialist rules.

Where supplies are partly taxable and partly exempt, partial exemption can affect how much VAT on expenditure is recoverable.

Britvex’s broader VAT for Small Businesses guide explains VAT operation after registration, while the Britvex VAT service covers registration, returns and ongoing compliance.

Reclaiming VAT before registration

VAT registration can allow eligible businesses to recover certain VAT incurred before the effective registration date, but the rules are not unlimited.

HMRC generally permits eligible pre-registration recovery for:

• goods bought within the previous four years where the relevant conditions are met and the goods are still held or incorporated into goods still held; and
• services received within the previous six months, subject to the applicable business-use and taxable-supply conditions.

The business must hold valid evidence and the expenditure must relate to the VAT-registered business and its taxable activities.

Example — equipment bought before registration

A business registers for VAT on 1 October. It bought qualifying office equipment twelve months earlier, still owns that equipment and holds the VAT invoices. Subject to the detailed conditions, the VAT may potentially be included as eligible pre-registration input tax.

Example — professional fees

Relevant professional services received seven months before registration will normally fall outside the ordinary six-month pre-registration service window, even though the business itself may have existed for longer.

Pre-registration VAT should therefore be reviewed invoice by invoice rather than claimed as a blanket percentage of historic costs.

Making Tax Digital for VAT

VAT registration now normally means digital VAT compliance from the beginning.

HMRC states that all VAT-registered businesses should use Making Tax Digital for VAT unless an exemption applies.

Functional compatible software must be capable of:

• recording and preserving the required digital VAT records;
• sending VAT Return information to HMRC through the appropriate API; and
• receiving information from HMRC through the system.

This can be achieved through a compatible accounting package or, in appropriate cases, compatible bridging software connecting existing digital records to HMRC.

A spreadsheet by itself is not automatically a compliant filing method merely because the VAT calculation happens inside it. The digital link into the submission process matters.

Britvex connects Bookkeeping with VAT compliance so that the return is prepared from the same transaction records used for the wider accounts rather than from a disconnected quarterly reconstruction.

VAT Returns, deadlines and payment

Most VAT Returns cover a three-month accounting period, although other arrangements and VAT schemes can produce different timings.

A VAT-registered business normally has to submit a return even where:

• there is no VAT to pay;
• there were no transactions;
• the business expects a repayment; or
• the period was commercially quiet.

The standard online VAT Return and payment deadline is usually one calendar month and seven days after the end of the VAT accounting period.

Example

If a normal quarterly VAT period ends on 30 September, the usual online filing and payment deadline would be 7 November, subject to the actual period and deadline shown by HMRC.

The business should always check the specific deadline in its VAT account and software rather than rely only on a generic calendar.

VAT should also be reconciled back to the bookkeeping ledger after submission. The amount filed with HMRC should agree to a supportable VAT control account rather than exist as an unexplained figure entered only into the return.

Common VAT registration mistakes

1. Looking only at annual turnover

The main historic test is rolling 12 months, not simply the last set of annual accounts.

2. Using profit instead of taxable turnover

VAT registration is not based on net profit after expenses.

3. Excluding zero-rated sales

Zero-rated supplies are generally taxable supplies and can count toward the registration threshold.

4. Ignoring the next-30-days test

A single large contract can create a registration requirement before the historic threshold has been crossed.

5. Assuming every overseas business gets a £90,000 allowance

Non-established businesses can be subject to different registration rules.

6. Charging VAT before understanding the effective date

The correct registration date determines the VAT liability and invoice treatment.

7. Treating exempt and zero-rated supplies as identical

They can have very different consequences for registration and input VAT recovery.

8. Forgetting pre-registration VAT

Potentially recoverable VAT on eligible historic purchases can be lost if invoices and supporting records are not reviewed.

9. Registering voluntarily without modelling customer pricing

A consumer-facing business may discover that absorbing VAT materially reduces its margin.

10. Setting up VAT separately from bookkeeping

MTD works best when VAT codes, digital records, invoices and the ledger are configured correctly from the start.

When to involve Britvex

VAT registration is most useful when it begins with the transaction facts rather than the HMRC form.

Britvex can review:

• rolling taxable turnover;
• the forward 30-day test;
• the correct effective registration date;
• voluntary registration;
• overseas-business VAT exposure;
• standard, reduced, zero-rated or exempt treatment;
• pre-registration VAT recovery;
• VAT schemes where relevant;
• MTD-compatible accounting records; and
• the first and recurring VAT Returns.

For ongoing support, see the Britvex VAT service or VAT Registration & Returns. Clients can provide records securely through the Britvex Client Portal.

Official sources and further reading

• GOV.UK — When to register for VAT
• GOV.UK — How to register for VAT
• GOV.UK — VAT thresholds
• GOV.UK — Charge, reclaim and record VAT
• GOV.UK — Reclaim VAT on business expenses
• HMRC — Making Tax Digital for VAT
• GOV.UK — Sending a VAT Return
• HMRC — VAT rates on goods and services