If you sell online, VAT is probably the most time-consuming compliance job on your plate. You've got Shopify orders, Amazon payouts net of fees, advertising spend, fulfilment costs, and maybe sales into the EU. Each of those has its own VAT treatment, and getting any of them wrong costs you money.
That's where a VAT accountant earns their fee. A good one doesn't just file your quarterly return. They put you on the right scheme, make sure you reclaim every penny of input VAT you're entitled to, and keep you the right side of HMRC before a small slip becomes an expensive one.
This guide explains what a VAT accountant actually does for an online seller, the rules and thresholds for 2025/26, which scheme tends to suit ecommerce businesses, and how to pick someone who genuinely understands online selling.
What does a VAT accountant do for an ecommerce business? {#what-does-a-vat-accountant-do}
A VAT accountant is more than a quarterly form-filler. The good ones are proactive, making sure you're on the right scheme, reclaiming what you're owed, and not drifting towards a compliance problem.
In practice their work covers four things.
Registration and scheme selection. Getting this right at the start saves years of overcomplicated returns. Your accountant looks at your turnover, your cost base, and what you actually sell, then recommends the scheme that leaves you with the best net position.
Quarterly MTD submissions. Since 1 April 2022, every VAT-registered business must keep digital records and file through Making Tax Digital-compatible software that links to HMRC (gov.uk). Most accountants connect to your accounting software and file from there, so you barely touch it.
Input VAT reclaims. This is where a lot of online sellers quietly lose money. VAT on stock, packaging, advertising, warehouse rent, hosting and fulfilment is generally reclaimable when you're on the Standard scheme. Someone who knows ecommerce makes sure none of it slips through.
HMRC correspondence. If HMRC raises a query or opens a VAT inspection, your accountant deals with it. That alone takes a lot of stress out of the job.
If you'd rather hand the whole thing over, that's exactly what our VAT and tax advisory service is built for.
What is the VAT threshold in 2025/26 and when must you register? {#vat-threshold}
The VAT registration threshold is £90,000 of taxable turnover on a rolling 12-month basis. It's been at that level since 1 April 2024 (gov.uk).
You must register if either of these is true:
- Your taxable turnover over the past 12 months has gone over £90,000, or
- You expect it to go over £90,000 in the next 30 days alone.
For an online seller, taxable turnover includes your standard-rated sales on Amazon and Shopify, digital products, online courses and any delivery charges you pass on. It excludes genuinely exempt income and zero-rated sales such as most food and children's clothing.
Miss the deadline and it gets painful. HMRC can backdate your registration to the date you should have registered and charge you the VAT you should have collected, even on sales where you never added VAT to the price. A penalty can also apply, based on how much you owe and how late you are (gov.uk). The longer the delay, the bigger the bill.
If you think you're closing in on £90,000 on a rolling basis, this is a good moment to get help. You can sense-check the numbers yourself with our VAT-aware income and tax tools or have an accountant monitor it for you.
The deregistration threshold is £88,000 (gov.uk). If your turnover drops below that and you expect it to stay there, you can apply to come off the register.
Is voluntary VAT registration worth it for online sellers? {#voluntary-registration}
It depends on your cost base, but for a lot of ecommerce businesses the answer is yes.
If you spend heavily on stock, paid advertising, hosting, packaging and fulfilment, you're paying 20% VAT on most of that (gov.uk). Registering on the Standard scheme lets you reclaim it.
Illustrative example. Say you spend £3,000 a month on advertising plus standard-rated services. At the 20% standard rate, that's £500 of VAT inside the £3,000 (£3,000 ÷ 6), or £6,000 a year you could reclaim on those costs once registered. The heavier your input costs relative to revenue, the stronger the case.
The trade-off is that you have to charge VAT on your sales. If you sell to consumers who can't reclaim it, that either squeezes your margin or pushes your prices up. If you sell B2B, it rarely matters because the buyer reclaims the VAT anyway.
A VAT accountant can model the actual numbers for your business before you commit, so it's a decision based on your figures rather than a guess.
Which VAT scheme is best for an online business? {#vat-scheme}
Choosing the right scheme is one of the highest-value calls a VAT accountant helps you make. Here's how the main options compare for online sellers.
| Scheme | Best suited to | Key advantage | Main drawback |
|---|---|---|---|
| Standard | High stock or ad spend | Full input VAT reclaim on purchases | More record-keeping per quarter |
| Flat Rate | Low-cost stores, simple admin | Pay a set percentage of turnover | No input VAT reclaim (except some capital assets) |
| Cash Accounting | Slow-paying B2B customers | Pay VAT only once you're paid | Can't reclaim input VAT until you pay suppliers |
| Annual Accounting | Stable, predictable turnover | One return a year | Advance payments through the year |
The Flat Rate Scheme can suit a newer, low-cost store: you pay a flat percentage of turnover instead of tracking input VAT, and you get a 1% discount in your first year of VAT registration (gov.uk). You can join the Flat Rate Scheme if your VAT taxable turnover is £150,000 or less, excluding VAT (gov.uk).
The catch is the trade-off. On the Flat Rate Scheme you generally can't reclaim input VAT on your purchases. So once your stock and advertising costs climb, the Standard scheme usually leaves you better off. The right answer for a dropshipper with almost no overheads is different from the right answer for a seller importing goods and running heavy ad spend. A good accountant reruns the numbers each year, not just on day one.
What ecommerce VAT problems does a specialist handle? {#ecommerce-vat-problems}
Generalist accountants sometimes stumble on the VAT issues that are specific to online selling. A specialist deals with these every week.
Marketplace and fulfilment fees. Platforms charge UK sellers VAT on many of their fees, including fulfilment, storage and advertising. On the Standard scheme that VAT is reclaimable, but only if it's picked up correctly from your account and reconciled against your return.
Selling to EU consumers. Since Brexit, a UK seller shipping goods to EU consumers may have EU VAT obligations and can often use the EU's One Stop Shop to report it. The rules are detailed and depend on what you sell and where, so it's worth specific advice rather than a rule of thumb.
Digital products and services. Selling downloads, courses or software has its own VAT treatment, and it differs depending on whether the buyer is a consumer or a business. This is one of the most common places online sellers get VAT wrong.
Shipping and delivery charges. Whether your delivery charge is VATable, and at what rate, depends on how it's structured against the underlying supply. A specialist handles this so you don't have to think about it.
Multi-currency sales. If you sell in euros or dollars, those amounts need converting to sterling for VAT using an HMRC-accepted method. In a high-volume operation that's easy to get wrong at scale.
If you sell through Amazon, our ecommerce accounting support and Amazon FBA specialism are built around exactly these problems.
How does a VAT accountant save you time and money? {#time-and-money}
The time saving is straightforward. For most online sellers, the quarterly return goes from hours of fiddly admin to a quick review and approval, because the data already flows from your accounting software.
The money saving comes from input VAT that would otherwise be missed. When transactions aren't categorised correctly, marketplace fees, packaging and advertising VAT are the items most often left unclaimed on the Standard scheme. Catching those each quarter improves your cash position, and on the Standard scheme that VAT is genuinely yours to reclaim.
Illustrative example. A Standard-scheme seller finds £1,500 of input VAT a quarter that wasn't being captured: fees, packaging and ad VAT. Recovered correctly, that's roughly £6,000 a year back in the business. Your figures will differ, but the principle holds: the reclaim often more than covers the accountancy fee.
How do you choose the right VAT accountant? {#how-to-choose}
Not every accountant knows ecommerce, and the gap shows fast once the VAT questions get technical. Here's what to look for.
Real ecommerce experience. Ask directly. Do they have clients selling on Amazon and Shopify? Do they understand marketplace fee structures and how they affect input VAT?
Direct software integration. They should connect to your accounting software and file MTD returns straight to HMRC, not ask you to export reports and email them over.
Predictable fees. VAT work should be a fixed, known cost. Be wary of arrangements where quarterly returns or HMRC correspondence are billed as unclear extras.
Proactive advice. The best accountants tell you when your scheme is no longer optimal, when voluntary registration would help, or when a change in your business creates a new VAT obligation, without you having to ask.
Response time. VAT runs on deadlines. If a question sits unanswered for a week, that's a problem. Ask how quickly they reply and what happens when a deadline is close.
Want VAT off your plate? Book a free 20-minute call with a Zmartly accountant and we'll review your scheme, your reclaims and your numbers. Talk to a Zmartly VAT accountant.
FAQs {#faqs}
Can I manage VAT myself as an online seller? Yes, especially on a simple scheme with mostly UK sales and good software. But a specialist often recovers more input VAT and avoids more costly errors than they charge, so it's worth doing the maths for your own numbers.
Is voluntary VAT registration worth it for online businesses? For many sellers with meaningful advertising, stock or fulfilment costs, yes, because the input VAT reclaim on the Standard scheme can outweigh the extra compliance. Ask an accountant to model your specific position first.
What is the VAT registration threshold in 2025/26? £90,000 of taxable turnover on a rolling 12-month basis. You must also register if you expect to exceed £90,000 in the next 30 days alone.
Does the Flat Rate Scheme let me reclaim input VAT? Generally no. On the Flat Rate Scheme you pay a set percentage of turnover instead of tracking input VAT, with limited exceptions for some capital assets. If your costs are high, the Standard scheme usually leaves you better off.
Do VAT accountants help with EU sales? Yes. EU obligations for goods sold to EU consumers and the EU's One Stop Shop are areas a specialist handles regularly. If you sell into Europe, get advice specific to what you sell and where.
What happens if I miss the VAT registration threshold? HMRC can backdate your registration, charge the VAT you should have collected even where you never added it to a price, and apply a penalty based on how much you owe and how late you are. If you think you've already crossed the threshold, speak to an accountant before contacting HMRC.
