The standard answer to the question "when to register for VAT" is straightforward: when your taxable turnover exceeds £90,000 in a rolling 12-month period. That is the compulsory registration threshold for 2025/26, and it applies to most businesses selling goods or services in the UK.
But if you sell zero-rated goods, the maths changes. You might want to register before you hit that threshold. In some cases, it makes no sense to register at all. In others, failing to register voluntarily costs you real money.
This article covers the specific VAT rules for businesses selling zero-rated goods. We will walk through when registration is compulsory, when voluntary registration pays, and when you should stay below the threshold.
What Are Zero-Rated Goods for VAT Purposes?
Zero-rated goods are those where the VAT rate is 0% at the point of sale to the customer. You do not charge VAT on your invoices. But critically, you can still reclaim the VAT you pay on your own business purchases.
Common examples include:
- Most food and drink (but not restaurant meals, hot takeaway food, or alcohol)
- Children's clothing and footwear
- Books, newspapers and magazines
- Public transport fares
- Charity advertising
- New house construction (the builder charges 0% to the buyer)
- Exports of goods to non-UK customers
- Prescription medicines
- Equipment for disabled people
Zero-rating is different from exemption. Exempt supplies (like insurance, education or postal services) also mean you do not charge VAT, but you cannot reclaim input VAT on related costs. Zero-rated supplies let you reclaim. That distinction is the entire reason the voluntary registration question exists.
The Compulsory Threshold Still Applies
Let us be clear on the rule. If your VAT-taxable turnover (including zero-rated sales) exceeds £90,000 in any rolling 12-month period, you must register for VAT. This applies regardless of whether your sales are standard-rated, reduced-rated, or zero-rated.
HMRC looks at your historic turnover. If at the end of any month your cumulative turnover for the previous 12 months exceeds £90,000, you must notify HMRC within 30 days. Your effective date of registration is the first day of the second month after you exceeded the threshold.
Example: A Bristol-based organic food wholesaler turned over £87,000 in the 12 months to January 2026. In February 2026, a large supermarket order pushes the rolling 12-month total to £94,000. The business must register by the end of March 2026, with effect from 1 April 2026.
You can also register voluntarily at any point below the threshold. That is where the strategic decision sits.
Voluntary Registration: When It Pays to Register Early
If you sell zero-rated goods, your customers do not care whether you charge VAT. They pay the same price either way because you are not adding 20% to your invoices. So the usual deterrent to voluntary registration (you must add VAT to your prices, making them less competitive) does not apply.
What you gain is the ability to reclaim input VAT on your own costs. If you buy stock, packaging, equipment, software, rent on commercial premises, marketing services or professional fees, and those suppliers charge you VAT, you can reclaim it all through your VAT return.
This is effectively a 20% discount on your business costs. For a business with significant overheads, that can be substantial.
A Worked Example: Children's Clothing Retailer
Consider a children's clothing retailer in Manchester's Northern Quarter. Turnover is £65,000 per year. Costs of goods sold are £28,000 plus VAT at 20%. Rent on the shop is £12,000 plus VAT. Marketing and software costs total £5,000 plus VAT.
Total input VAT on those costs: £28,000 at 20% is £5,600, plus £12,000 at 20% is £2,400, plus £5,000 at 20% is £1,000. Total input VAT: £9,000.
Without VAT registration, that £9,000 is a permanent cost. With voluntary registration, the business reclaims it in full every quarter. The customers pay the same prices (zero-rated). The business is £9,000 better off each year.
There is a catch: you must submit quarterly VAT returns and maintain compliant records. But for £9,000 a year, that is usually worth the admin.
When Voluntary Registration Does Not Pay
Voluntary registration is not always the right move. Here are the scenarios where you should stay below the threshold.
Your Costs Are Low
If you run a service-based business selling zero-rated exports (for example, a freelance graphic designer in Edinburgh selling to US clients), your costs may be minimal. A laptop, some software subscriptions, a co-working space. Your input VAT might be £500 a year. The administrative burden of quarterly VAT returns may not be worth that saving.
Your Customers Are VAT-Registered Businesses
If you sell zero-rated goods to other VAT-registered businesses, they do not care about the VAT status either. But if you are below the threshold and your customers are VAT-registered, they may prefer to deal with a VAT-registered supplier so they can reclaim input VAT on any standard-rated elements of your invoice. In practice, this is rarely decisive for zero-rated supplies, but it can matter if your invoice includes standard-rated services alongside zero-rated goods.
You Are Close to the Threshold and Expect to Exceed It Soon
If your turnover is £82,000 and growing fast, you will hit £90,000 within months. Registering voluntarily now saves you the hassle of a late registration penalty later. But if you are at £45,000 with no growth trajectory, the admin may outweigh the benefit.
The Partial Exemption Trap
If you sell both zero-rated goods and exempt supplies, you enter partial exemption territory. HMRC only lets you reclaim input VAT in proportion to your taxable supplies (standard-rated plus zero-rated) versus your total turnover. This gets complicated quickly.
Example: A bookshop in Leeds sells zero-rated books (good) and also sells exempt greeting cards from a charity partner (exempt). If the exempt sales exceed certain limits, the business cannot reclaim all its input VAT. The partial exemption de minimis limits are worth knowing: if your exempt input VAT is under £625 per month and less than 50% of total input VAT, you can reclaim everything. Above those limits, you need a partial exemption calculation.
If your business sells a mix of zero-rated and exempt supplies, speak to an accountant before registering voluntarily. The numbers can go the wrong way.
How to Register for VAT as a Zero-Rated Trader
The process is the same as for any business. You register online through your Government Gateway account. HMRC will ask for your turnover figures, the nature of your business, and your bank details for repayments.
If you are registering voluntarily (below the threshold), you will need to explain why you want to register. "I sell zero-rated goods and want to reclaim input VAT" is a perfectly acceptable reason. HMRC typically approves these applications within two to four weeks.
You will receive a VAT registration number and a certificate showing your effective date of registration. From that date, you must charge VAT on standard-rated supplies (if you have any), issue VAT invoices, and submit returns.
For zero-rated supplies, you still issue VAT invoices showing 0% VAT. Your customers see your VAT number on the invoice. You file returns showing output VAT of £0 (on zero-rated sales) and input VAT reclaimed on your costs. HMRC will repay the difference to you.
Most zero-rated traders use monthly or quarterly repayment returns. Monthly returns speed up the repayment cycle if you are reclaiming significant input VAT. You can request monthly returns when you register, or change to monthly later through your HMRC online account.
Cashflow Implications
Reclaiming input VAT on zero-rated supplies means HMRC owes you money each quarter. That is a positive cashflow position, but it comes with timing risk.
HMRC aims to process VAT repayment returns within 30 days. In practice, repayments often take 10 to 14 working days for straightforward returns. If your return is selected for compliance checks, it can take longer. You should factor this delay into your cashflow planning.
If you use a VAT loan or factoring arrangement (common in some retail sectors), the repayment delay matters less. But for most small businesses, a 30-day wait for a £3,000 VAT repayment is manageable.
Making Tax Digital for VAT
All VAT-registered businesses must use MTD-compatible software to submit VAT returns. This has been mandatory since April 2022 for most businesses, and since November 2022 for the remaining deferrals. There are no exemptions for zero-rated traders.
You need bridging software or a full accounting package like Xero, QuickBooks or FreeAgent to file digitally. HMRC's own portal is no longer available for filing VAT returns. If you are not already using MTD-compatible software, factor the cost and setup time into your decision to register.
Our VAT and Making Tax Digital blog covers the software options and compliance requirements in more detail.
What About the Flat Rate Scheme?
The Flat Rate Scheme lets you pay a fixed percentage of your turnover as VAT, rather than calculating input and output VAT in detail. It is designed to simplify VAT for small businesses.
But for zero-rated traders, the flat rate scheme is usually a bad idea. The flat rate percentages are set above 0% (the lowest is 4% for some retail sectors, most are 8-14%). You pay VAT on your full turnover, even though you charge your customers 0%. And you cannot reclaim input VAT on purchases (except for certain capital assets over £2,000).
A zero-rated trader on the flat rate scheme would pay VAT to HMRC rather than reclaiming it. That is the wrong direction. Unless you have very specific circumstances, avoid the flat rate scheme if you sell mainly zero-rated goods.
The standard VAT accounting scheme (normal returns with input and output VAT) is almost always better for zero-rated traders.
Common Mistakes We See
Our ICAEW qualified team at Holloway Davies regularly sees zero-rated traders make these errors:
- Not registering at all because they assume zero-rated means no VAT involvement. It does not. The £90,000 threshold applies to all taxable supplies, including zero-rated.
- Registering voluntarily without checking input VAT amounts. If your costs are low, the admin burden may outweigh the benefit.
- Using the flat rate scheme because it sounds simpler. It is not simpler for zero-rated traders. It costs you money.
- Failing to account for partial exemption when selling a mix of zero-rated and exempt supplies. This leads to incorrect VAT returns and potential penalties.
- Not keeping proper digital records for MTD. HMRC can issue penalties for non-compliant filing.
Should You Register? A Decision Framework
Ask yourself these questions in order:
- Has your rolling 12-month turnover exceeded £90,000? If yes, you must register. Do it within 30 days.
- Do you sell mainly zero-rated goods? If yes, voluntary registration is worth considering.
- What is your annual input VAT? Calculate the VAT on your business purchases. If it exceeds £1,000-2,000 per year, registration is probably worthwhile. Below that, the admin may not be worth it.
- Do you also sell exempt supplies? If yes, get professional advice before registering. Partial exemption can complicate things significantly.
- Are you using MTD-compatible software? If not, factor in the setup cost and time.
If you answer yes to question 1, register immediately. If you answer yes to questions 2 and 3, and no to question 4, voluntary registration is likely the right move.
For bespoke advice on your specific trading position, contact our VAT team. We work with businesses across every sector and can run the numbers for your situation.
Final Thoughts
The question "when to register for VAT" has a different answer for zero-rated traders than for standard-rated businesses. The compulsory threshold is the same £90,000. But the voluntary decision is driven by your input VAT, not your output VAT.
If you reclaim more in input VAT than you incur in administrative costs, register voluntarily. If your input VAT is negligible, stay below the threshold until you hit £90,000.
And if you are already registered and selling zero-rated goods, check you are on the right scheme. The flat rate scheme costs you money. Standard VAT accounting with quarterly repayment returns is almost always better.
Our VAT and Making Tax Digital blog has more on the practicalities of VAT registration and compliance. For a full overview of our services, visit our services page.