If you run a limited company in the UK, VAT registration will be relevant to you at some point — whether that’s because you’ve crossed the mandatory threshold, you’re approaching it quickly, or you’ve decided voluntary registration makes commercial sense. Knowing how to register a limited company for VAT correctly, and what to expect along the way, saves you from avoidable delays and compliance headaches.

VAT — Value Added Tax — is collected on behalf of HMRC by VAT-registered businesses. As a limited company director, you add VAT to your sales invoices, collect it from customers, and pass the net amount to HMRC on a quarterly basis (in most cases). In exchange, you can reclaim VAT on qualifying business purchases.

The mandatory registration threshold currently stands at £90,000 in taxable turnover, measured on a rolling 12-month basis. That figure increased from £85,000 in April 2024. Miss the registration deadline and HMRC can back-date your liability and charge penalties — so timing matters. This guide covers everything from the threshold rules to the documents you’ll need, the registration steps themselves, and the VAT scheme choices you’ll face once registered.

The VAT registration threshold is currently £90,000 of taxable turnover in any rolling 12-month period — not the tax year, not the calendar year, but any consecutive 12 months. That distinction trips up a lot of new directors. You could cross the threshold in the middle of the year and not realise it.

The mandatory threshold

You’re required to register when you either:

• Exceed £90,000 of VAT-taxable turnover in the previous 12 months, or
• Reasonably expect to exceed £90,000 in the next 30 days alone — for example, because you’ve just won a large contract.

Once you cross the threshold, you have 30 days to notify HMRC. Your effective date of registration will be the first day of the month following the month in which you exceeded the limit. If you also knew in advance that you’d exceed the threshold within a 30-day window, your effective date is the date that expectation arose.

The deregistration threshold

If your taxable turnover drops below £88,000 and you expect it to stay there, you can apply to deregister. HMRC won’t automatically remove you — you need to request it.

What counts as taxable turnover?

Taxable turnover includes all sales subject to VAT at any rate: the standard rate (20%), the reduced rate (5%), and zero rate (0%). Exempt supplies — such as certain financial services, insurance, and some healthcare services — do not count towards the threshold. If your limited company makes a mix of taxable and exempt sales, you’ll need to track each category separately.

Zero-rated sales do count towards the threshold, even though no VAT is collected on them. This catches out a number of food, publishing, and construction businesses whose invoices carry no VAT but whose turnover still triggers a registration obligation.

The online registration process is straightforward enough, but gathering the right information beforehand makes it significantly quicker. HMRC’s system will time you out if you leave it idle, so having everything to hand is worth the five minutes of preparation.

Company information you’ll need

• Company Registration Number (CRN) — the 8-digit number on your certificate of incorporation from Companies House
• Unique Taxpayer Reference (UTR) — issued to your company by HMRC when you registered for Corporation Tax
• Business bank account details — sort code and account number for the account you use for company finances
• Nature of your business — a description of what your company sells or does, including the relevant SIC code if you know it

Financial information you’ll need

• Your annual taxable turnover, or your best estimate if you’re a newer company
• An estimate of your taxable turnover for the next 12 months
• Details of when you first exceeded the threshold (or when you expect to)

Other tax registrations

HMRC will also ask about your existing tax registrations, including Corporation Tax and PAYE (if you run a payroll). If you — as director — also complete a Self Assessment return, that information may be referenced too. Having your PAYE reference number handy, if relevant, will prevent delays mid-application.

If someone else is registering on your behalf — such as your accountant — they’ll need to be authorised as your agent on your Government Gateway account, or use their own agent services account.

VAT registration for a limited company is done through HMRC’s online services. Postal applications are possible but significantly slower and rarely used in practice. Online is the default, and for most limited companies, it’s the right choice.

Government Gateway access

You’ll need a Government Gateway account for your company (not your personal one). When you registered your limited company for Corporation Tax, HMRC should have issued you company Government Gateway credentials. If you’ve lost them, you can recover them through HMRC’s online service using your company’s UTR and registered address.

The VAT registration application

Once logged in, navigate to ‘Register for VAT’ within your business tax account. The application will walk you through:

1. Your company details (CRN, UTR, address, nature of business)
2. Your turnover history and forecast
3. The date you exceeded, or expect to exceed, the threshold
4. Your bank account details
5. Whether you want to join a VAT scheme (flat rate, cash accounting, or annual accounting)
6. Whether you’re registering voluntarily

Most straightforward applications take around 20 to 30 minutes to complete. HMRC usually processes them within 10 working days, though during busy periods it can take longer. You’ll receive written confirmation by post, and your VAT registration certificate will appear in your online business tax account.

What you receive after registration

Once registered, HMRC will confirm:

• Your 9-digit VAT registration number
• Your effective date of VAT registration
• The date your first VAT return is due
• Access to your VAT account within your business tax account

Keep your effective registration date in mind — you’re responsible for accounting for VAT on all taxable sales from that date, even if your VAT number hasn’t arrived yet.

When you register for VAT, you don’t have to accept the default standard VAT accounting method. HMRC offers several schemes designed to simplify administration or smooth cash flow, and selecting the right one at the point of registration can save you money and time.

Standard VAT accounting

Under the standard method, you pay VAT on all sales you’ve invoiced in the quarter and reclaim VAT on all purchases you’ve received invoices for — regardless of whether cash has actually changed hands. This is the default and the most flexible option, as it allows you to reclaim VAT on all qualifying business expenses.

Flat Rate Scheme (FRS)

The Flat Rate Scheme lets you pay a fixed percentage of your gross (VAT-inclusive) turnover to HMRC, rather than calculating the VAT on every individual transaction. Eligibility requires your estimated VAT-taxable turnover to be £150,000 or below in the next 12 months.

The rate you apply depends on your business sector. As one example, IT consultants and professionals typically use a rate of 14.5%, which drops to 13.5% in the first year of VAT registration. The appeal of the FRS is simplicity — one calculation per quarter.

However, there’s an important catch. If your company qualifies as a limited cost trader — meaning you spend less than 2% of your VAT-inclusive turnover on relevant goods, or less than £1,000 per year — HMRC requires you to use the 16.5% rate. At that level, the scheme offers little or no financial advantage over standard accounting, and many limited cost traders find the standard method results in a lower overall VAT bill, particularly when they have significant VAT-bearing expenses to reclaim.

Cash accounting scheme

Instead of accounting for VAT when invoices are raised, the cash accounting scheme lets you account for VAT when payment is actually received (or made). This is particularly useful if your clients pay on long credit terms, as it prevents you from paying VAT to HMRC before your customer has paid you.

Annual accounting scheme

Rather than submitting quarterly returns, the annual accounting scheme allows you to file a single VAT return per year and make interim payments throughout the year based on estimated liability. It suits businesses with relatively stable, predictable turnover.

Nothing requires you to wait until you hit £90,000 before registering. Any VAT-eligible business can register voluntarily, even from day one — and for many limited companies, there are solid reasons to do so.

The main case for voluntary registration

If your suppliers are VAT-registered and your clients are VAT-registered businesses themselves, voluntary registration lets you reclaim input VAT on purchases while your clients simply reclaim the VAT you charge them. The VAT becomes largely invisible in the transaction chain, and you benefit from recovering tax on your costs.

Consider a limited company that’s just started trading and is spending significantly on equipment, software subscriptions, professional services, and premises. If that company isn’t VAT-registered, it’s bearing the full VAT cost on those purchases — typically 20% — with no mechanism to recover it. Registering voluntarily from the outset changes that picture.

When voluntary registration doesn’t help

If your end customers are members of the public — consumers who can’t reclaim VAT — then charging VAT on your invoices effectively makes you 20% more expensive, or squeezes your margin if you absorb it. In that context, staying below the threshold can be a genuine competitive advantage, particularly for service businesses in consumer markets.

The decision isn’t always obvious. It depends on your customer base, your input costs, and your sector. If you’re unsure, it’s worth running the numbers with an accountant before registering — the choice can have a material effect on your pricing strategy and cash flow.

Voluntary registration and the Flat Rate Scheme

Businesses that register voluntarily can also join the Flat Rate Scheme (subject to the turnover eligibility criteria), and benefit from the 1% first-year discount on their flat rate. For some service-based limited companies with low expenses, this combination has historically been financially advantageous — though the limited cost trader rules have narrowed that advantage considerably in recent years.

When HMRC processes your VAT registration, it will automatically enrol your limited company into Making Tax Digital for VAT (MTD for VAT) — unless you qualify for an exemption or have applied for one. This isn’t optional for the vast majority of businesses.

What MTD for VAT requires

Under MTD for VAT, you must:

• Keep your VAT records digitally using MTD-compatible software
• Submit your VAT returns directly through that software using HMRC’s API — you cannot manually type figures into HMRC’s portal
• Maintain a full digital audit trail from your source transactions through to your VAT return figures

HMRC-approved software includes packages such as Xero, QuickBooks Online, and FreeAgent. All three are used and supported by our team at Edward Harris. Dext (formerly Receipt Bank) integrates with these platforms to handle receipt capture digitally.

Exemptions from MTD for VAT

Exemptions are available but narrow. You may qualify if:

• It’s not reasonably practicable to use digital tools due to age, disability, remoteness, or religion (for example, some members of certain religious communities)
• Your business is subject to an insolvency procedure

Exemption applications must be made to HMRC directly. Most limited companies will not qualify and should plan for MTD compliance from day one of VAT registration.

Getting your software set up

The practical implication is that you need MTD-compatible bookkeeping software in place before you submit your first VAT return. Your first return date will be confirmed in your registration certificate — it’s typically the end of the first full quarter following your effective registration date. That gives you a defined window to get set up, trained on the software, and comfortable with the process before your first deadline.

Here is a clear sequence of steps for getting your limited company registered for VAT without delays or avoidable errors.

These are the errors that create the most problems for limited company directors going through the VAT registration process.