VAT registration is one of those things that catches a lot of sole traders off guard. One minute you’re focused on growing your business, the next you’re approaching the threshold and wondering what you’re supposed to do — and whether you should have done it sooner.
The good news is that once you understand how it works, it’s really not as complicated as it first appears. This article explains when you need to register, when it might actually make sense to register early, and exactly what you’ll need to do once you are registered.
The VAT Threshold — What It Is and How It Works
The current VAT registration threshold in the UK is £90,000. This refers to your VAT-taxable turnover — essentially the total value of sales you make that aren’t VAT-exempt — over any rolling 12-month period.
It’s important to note that this isn’t based on the tax year. HMRC looks at any 12 consecutive months, not just April to April. So if your turnover creeps above £90,000 between, say, June one year and May the next, you’ve crossed the threshold — even if your annual accounts don’t immediately reflect it.
Once you go over, you have 30 days to notify HMRC and register for VAT. If you miss this, HMRC can charge you VAT on all sales you should have collected, plus penalties and interest. That can be a painful bill.
If you need a broader overview of how self-employment works from a tax perspective, our guide on registering as self-employed in the UK covers the full picture.
Voluntary VAT Registration — Is It Worth It?
You don’t have to wait until you hit £90,000. You can register voluntarily at any point, and for some sole traders, it genuinely makes financial sense to do so.
The main reason to register early is if you spend a significant amount on VAT-able purchases for your business. Once you’re registered, you can reclaim the VAT on those costs — which could save you hundreds or even thousands of pounds a year depending on what you’re buying.
For example, if you’re a sole trader who buys equipment, materials, or services with VAT on them, reclaiming that 20% adds up quickly. Our article on how VAT registration can affect your prices explores this in more detail, including the pricing decisions you’ll need to think through.
The flip side is that if most of your customers are individuals rather than VAT-registered businesses, adding VAT to your prices makes you 20% more expensive — and they can’t reclaim it. That’s a real commercial consideration.
There’s no single right answer. It depends on your customer base, your costs, and your growth plans. This is one of those decisions where speaking to an accountant for sole trader beforehand is well worth it.
What Happens After You Register?
Once you’re registered, HMRC assigns you a VAT number and a first VAT return period. From that point, you have a few ongoing obligations:
Charging VAT on your sales. You’ll need to add VAT to your invoices at the appropriate rate — 20% for most goods and services, 5% for some, and 0% for others. You’ll also need to issue VAT invoices to your customers.
Reclaiming VAT on your purchases. You can claim back the VAT you’ve paid on business expenses, provided you have valid VAT receipts.
Filing VAT returns. For most sole traders, VAT returns are submitted quarterly. Each return shows the VAT you’ve charged on sales, the VAT you’re reclaiming on purchases, and the difference — which is either what you owe HMRC or what they owe you.
Paying what you owe. Payment is due at the same time as your return. Missing the deadline leads to surcharge penalties, so it’s worth setting up a direct debit if you can.
For support with all of this, our VAT returns HMRC service takes care of the filing and calculations on your behalf, so you’re not trying to work it all out yourself each quarter.
Making Tax Digital for VAT
If you’re VAT-registered, you’re already required to follow Making Tax Digital (MTD) rules. This means keeping digital records and submitting your VAT returns through HMRC-compatible software — you can’t use HMRC’s old online portal anymore.
For sole traders, this is often the moment when cloud bookkeeping starts to make a lot of sense. Software like QuickBooks connects directly to your bank, pulls in your transactions automatically, and submits your VAT return with just a few clicks.
Our MTD for VAT guide explains the rules in straightforward terms, and our overview of MTD software options for small businesses can help you work out which platform suits you best.
As certified QuickBooks ProAdvisors, we set up and manage this for our clients — so the MTD side of things is handled from day one.
VAT Schemes Available to Sole Traders
Registering for VAT doesn’t mean you have to use the standard method. There are several VAT schemes worth knowing about:
Flat Rate Scheme. Instead of calculating the exact VAT on every transaction, you pay a fixed percentage of your gross turnover to HMRC. The rate depends on your trade sector — it’s typically between 4% and 14.5%. This can reduce your admin significantly and, depending on your sector, may leave you better off financially.
Cash Accounting Scheme. Under standard VAT accounting, you pay HMRC the VAT from an invoice when it’s issued, even if your customer hasn’t paid yet. The cash accounting scheme lets you account for VAT based on when money actually changes hands — which is much better for cash flow.
Annual Accounting Scheme. Rather than filing four returns a year, you file just one. You make advance payments throughout the year based on an estimate, then settle up with one final return. This suits sole traders who prefer less frequent admin.
A good bookkeeping service for small business can help you work out which scheme is most advantageous for how you operate, and make sure you’re set up correctly from the start.
The Impact on Your Prices and Customers
This is the thing that worries sole traders most, and understandably so. If your customers are other VAT-registered businesses, adding VAT to your invoices isn’t really a problem — they’ll reclaim it, so your effective price to them doesn’t change.
But if you sell directly to consumers, you’re now charging them 20% more. You have a choice: absorb the VAT yourself (which eats into your margin), increase your prices (which risks losing customers), or find a middle ground.
This is also where your Self Assessment tax return picture changes slightly. The VAT you collect is not your income — it’s collected on behalf of HMRC. Your taxable profits for Income Tax purposes are calculated on your net figures (excluding VAT), so it’s important that your bookkeeping reflects this clearly.
Getting your records set up properly with accounting services for small business from the outset will make your Self Assessment return much more straightforward.
Record-Keeping Once You’re VAT-Registered
Once you register, your record-keeping requirements go up a level. You’ll need to keep:
- VAT invoices for all sales above £250 (simplified invoices are permitted for lower amounts)
- Receipts and invoices for all purchases you want to reclaim VAT on
- A VAT account — a summary of the VAT you’ve charged and reclaimed each period
- Digital records if you’re within MTD (which all VAT-registered businesses now are)
You must keep these records for at least six years.
Good financial report services give you a real-time view of your VAT position throughout the quarter, so there are no surprises when the return is due.
If you’re thinking about whether your business structure still makes sense once you’re VAT-registered and growing, our article on moving from sole trader to limited company is a useful read — there often comes a point where incorporation becomes the more tax-efficient option.
When Things Get More Complicated
VAT isn’t always straightforward. A few situations that can catch sole traders out:
Partially exempt supplies. If you make a mix of VAT-able and VAT-exempt sales (for example, some financial or healthcare services are exempt), calculating how much VAT you can reclaim becomes more complex.
Overseas sales and purchases. If you buy services from abroad or sell to customers outside the UK, the VAT rules differ and can be genuinely confusing. Post-Brexit, the rules for EU transactions changed significantly.
Property and construction. These sectors have their own VAT rules, including the domestic reverse charge for construction services — which has tripped up a lot of contractors.
In any of these situations, getting the right advice early is far cheaper than fixing a problem later. Our accounting firms in Reading and Slough offices deal with these issues regularly, and we’re used to explaining them in plain terms.
FAQs
What happens if I go over the VAT threshold and don’t register? HMRC will require you to pay the VAT you should have charged, going back to when you crossed the threshold. You’ll also face penalties and interest. If you think you may have missed the threshold, it’s best to get in touch with an accountant straightaway rather than hoping HMRC won’t notice.
Can I deregister if my turnover drops below the threshold? Yes. You can apply to deregister if your taxable turnover falls below £88,000 (the deregistration threshold, which is slightly lower than the registration threshold). You can also deregister voluntarily if you’re registered but choose not to continue.
Do I have to charge VAT on everything I sell? Not necessarily. Some goods and services are zero-rated (like most food and children’s clothing) or exempt (like insurance and some financial services). You still need to register and file returns if your turnover exceeds the threshold, but the VAT rate on specific sales depends on what you’re selling.
How long does VAT registration take? HMRC typically processes VAT registrations within 30 working days, though it can take longer at busy times. You can apply online through HMRC’s website. Your accountant can do this on your behalf.
Do I need a separate bank account once I’m VAT-registered? HMRC doesn’t require one, but it’s strongly recommended. Keeping the VAT you collect in a separate account means you’re not accidentally spending money that belongs to HMRC.
Can I reclaim VAT on purchases I made before I registered? In some cases, yes. You can reclaim VAT on goods bought within four years before registration if you still have them, and on services received within six months before registration. There are conditions, so check with your accountant.
Ready to Get Your VAT Sorted?
Whether you’re approaching the threshold and wondering what to do next, already registered and finding the quarterly returns a headache, or thinking about voluntary registration, we can help.
At Asmat & Co, we’re trusted accountants with offices in Slough, Reading, and Wednesbury. We handle VAT registration, quarterly filing, scheme selection, and everything in between — so you can focus on running your business rather than worrying about HMRC.
And if you’re thinking about taking on staff or using accountant payroll services alongside your VAT, we can manage that too, all under one roof.
