What happens if I register late?

HMRC can charge a late-registration penalty based on the VAT you should have accounted for from the date you were required to register. The longer the gap, the higher the potential charge. If you believe you've passed the threshold and haven't yet registered, act quickly and take advice on how to correct the position.

Can I reclaim VAT on purchases made before I registered?

Generally yes — VAT on goods purchased in the four years before registration (still held in the business) and VAT on services received in the six months before registration can often be reclaimed. There are conditions and exceptions; have your accountant review the position as part of your first return.

How often do I file a VAT return?

Most businesses file quarterly. HMRC also allows monthly returns, which some businesses prefer if they regularly receive VAT refunds — for example, if exports form a large part of turnover. Confirm your period when you register and diary the submission deadlines from day one.

How to register your company for VAT

Mandatory versus voluntary registration

You must register for VAT if your taxable turnover in any rolling 12-month period exceeds the current registration threshold — confirm the current figure with HMRC or your accountant, as it can change at each Budget. The clock starts on the date you breach the threshold, and you have 30 days from that point to notify HMRC; the registration is then backdated to the start of the following month, or earlier if you prefer.

Voluntary registration is available at any turnover level, and it is often the right choice. Registering early lets you reclaim the VAT you pay on business purchases, which can be significant in a capital-intensive or supplier-heavy business. The trade-off is administrative burden and the requirement to charge VAT on your sales — which may matter if your customers are consumers or VAT-exempt businesses that can't reclaim it. The decision is worth discussing with your accountant before turnover forces it. This page is for guidance only; confirm your position with a qualified adviser.

How to register: step by step

Registration is done online through your company's HMRC Government Gateway account. You'll need the account before you start — if you haven't set one up, do that first at gov.uk. Then:

Sign in to your HMRC business tax account and select 'Register for VAT'.
Complete the VAT1 form online: company name, registered address, Companies House number, nature of business, date you need to register from, and estimated turnover.
Choose your accounting period — the start month of your VAT quarters. Align this with your financial year end where possible to reduce year-end complexity.
Select a VAT accounting scheme if appropriate — see the next section.
Submit. HMRC typically issues a VAT registration number within a few weeks, though it can be faster.

Once registered you'll have access to a VAT online account where you'll submit returns. Keep the confirmation letter — it contains your VAT number and effective date of registration, both of which go on your invoices from that date.

Choosing an accounting scheme

Most businesses use the standard VAT accounting method, where you account for VAT on invoices when they are raised, regardless of when they are paid. Two common alternatives are worth knowing:

Cash accounting scheme — you account for VAT only when payment is received (or made to suppliers). If your customers are slow payers, this is often better for cash flow. Available to businesses with taxable turnover below £1.35 million (confirm current limit with HMRC).
Flat-rate scheme — you pay a fixed percentage of your gross turnover to HMRC, determined by your trade sector, rather than calculating input and output VAT precisely. It reduces administration and can occasionally improve cash flow, but is not always cheaper overall. Check the current sector rates and confirm suitability with your accountant.

For most limited companies with straightforward supplier relationships, standard accounting is fine. The cash accounting scheme becomes attractive once debtors are a regular pressure on your cash position.

What to set up on day one

The moment your VAT registration is effective, your obligations change. Before that date arrives, get these in place:

Add your VAT number to your invoices — it is a legal requirement from the effective date.
Update your accounting software to record VAT correctly and ensure it is MTD-compatible (Making Tax Digital records are required from registration).
Set up a VAT reserve — a separate account or designated pot where you park the VAT element of each invoice as you raise it, so the quarterly bill is never a surprise.
Revisit your pricing if you sell to VAT-exempt or consumer customers who can't reclaim the VAT you now add.
Agree a VAT review process with your accountant so returns are prepared accurately and on time.

Missing a VAT return deadline carries automatic penalties under HMRC's points-based system. File on time from the start and the administration becomes routine rather than stressful.

Common mistakes to avoid

The errors that catch newly-registered businesses tend to cluster around a handful of habits:

Raising VAT invoices before the effective date. You cannot charge VAT before your registration is active.
Missing historic input VAT. You can generally reclaim VAT on goods bought in the four years before registration and services in the six months before, subject to rules. Don't leave it unclaimed — ask your accountant to review.
Confusing the registration threshold. The test is taxable turnover, which includes zero-rated supplies. Exempt supplies (certain finance, insurance, healthcare) do not count. The distinction matters for businesses in mixed sectors.
Not keeping digital records from day one. MTD for VAT requires digital record-keeping and submission through compatible software. Spreadsheet-and-manual approaches need to be replaced if you haven't done so already.