The VAT flat rate scheme sounds like a loophole somebody forgot to close. You charge clients the usual 20% VAT, hand HMRC a smaller fixed percentage, and keep the difference. For a few years, for a lot of small businesses, that is more or less exactly what it was.
Then 2017 happened, and a rule called limited cost trader arrived specifically to stop it. If you're a freelancer, consultant, or agency wondering whether the flat rate scheme is worth joining, that rule is the whole answer — and it usually says no. Not because the scheme is bad, but because the businesses it looks most attractive to are the exact ones it was rewritten to exclude.
This guide covers how the scheme actually works, the 16.5% rule that decides whether it saves you money or costs you thousands, the two ways people get the first-year discount wrong, and how to tell which side of the line your business sits on.
One note before we start: this is a UK scheme, run by HMRC. If you're VAT-registered somewhere else, the arithmetic below won't map onto your rules.
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How the flat rate scheme actually works
On the standard scheme, you do two sums every quarter: total the VAT you charged clients, total the VAT you paid on business purchases, and send HMRC the difference. On the flat rate scheme you do one: take a fixed percentage of your gross turnover and send that. In exchange, you give up the right to reclaim VAT on almost everything you buy.
You can apply if your VAT turnover is £150,000 or less, excluding VAT. Your percentage depends on your trade sector — HMRC publishes a list, and rates vary by industry.
Here's the shape of it, using a consultant billing £80,000 a year plus VAT, with £15,000 of expenses carrying £3,000 of reclaimable VAT:
0.12 × £96,000 = £11,520 to HMRC — £1,480 better off
Note the flat rate applies to gross turnover, the full £96,000 including the VAT you charged, not the £80,000 you actually earned. That trips people up constantly. The percentage looks small precisely because it's applied to a bigger number.
The limited cost trader rule, which is the real answer
Now the part that decides everything. If your business spends very little on goods, HMRC classes you as a limited cost business and your rate isn't your sector rate at all. It's a flat 16.5%.
You're a limited cost business if your spending on goods is less than either:
- 2% of your turnover, or
- £1,000 a year, if your costs are more than 2%.
The word doing the damage there is "goods". Services don't count. Not your accountant, not your software subscriptions, not rent, not subcontractors, not advertising. A consultant with a laptop and a Notion subscription spends almost nothing on goods in HMRC's sense, however expensive their actual business is to run.
Run the same consultant through it at 16.5%:
That's £2,840 worse than the standard scheme's £13,000 — and £4,320 worse than the 12% case above.
16.5% of the gross works out to roughly 19.8% of your net turnover. You are, in effect, handing over the entire 20% you charged, while also giving up the right to reclaim VAT on anything you buy. It is the worst of both schemes, bolted together, and it is the default outcome for a large share of the freelancers who go looking at the flat rate scheme in the first place.
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Worse, the test is applied period by period, not once when you join. A quarter where you happen to buy nothing physical can tip you into limited cost status for that quarter alone. And if HMRC decides after the fact that you should have been on 16.5% all along, they can go back and ask for the difference — which is a considerably less pleasant conversation than getting it right the first time.
The 1% discount, and the two ways it goes wrong
There's a genuine sweetener: you take 1% off your flat rate percentage during your first year as a VAT-registered business. On £96,000 of gross turnover that's worth £960, which is not nothing.
Two things catch people out, and they fail in opposite directions.
The first is that the clock runs from your VAT registration date, not from the day you joined the scheme. Register in January and join the flat rate scheme in September, and you get three months of discount rather than twelve. Nobody tells you this at the point of joining.
The second is the expensive one: forgetting to put the rate back up. The discount quietly expires on your registration anniversary, and your accounting software will keep using whatever percentage you typed in a year ago until somebody changes it. Underpay VAT for three years at 1% of turnover and you have a four-figure bill plus interest, triggered by a number nobody thought to look at again.
What you can still reclaim
Giving up VAT reclaims is the trade you're making, but there's one exception worth knowing: capital assets costing £2,000 or more including VAT, bought in a single transaction. A van, a decent camera, a workstation. You can reclaim the VAT on those in the normal way.
The catch, again, is goods versus services. A £4,000 office refit is a service and doesn't qualify. Neither does £3,000 of consultancy. And it has to be one purchase — you can't add up six laptops bought across the year to clear the threshold.
So who is it actually worth it for?
The scheme still works well for businesses that charge VAT on a decent turnover while genuinely buying goods — a caterer, a small retailer, a trades business that gets through real materials. Those businesses clear the 2% test comfortably, land on a sensible sector rate, and pocket the difference for less admin than the standard scheme demands.
It works badly for the service businesses that find it most appealing. If your costs are mostly software, subcontractors, and your own time, you are probably a limited cost business, probably paying 16.5%, and probably better off on the standard scheme where at least you can reclaim the VAT on what you buy.
The honest test is arithmetic, not vibes. Work out your gross turnover, apply your sector rate, apply 16.5%, then compare both against what you'd actually pay on the standard scheme after reclaims. If the answer is close, the standard scheme is usually the safer pick — it doesn't have a cliff edge you can fall off in a quiet quarter.
Our VAT calculator handles the gross-and-net side of that quickly, and if you're still working out whether to register at all, our guide to adding and removing VAT covers the threshold and the basic maths.
Frequently asked questions
Who can join the VAT flat rate scheme?
You can apply if you expect your VAT taxable turnover to be £150,000 or less, excluding VAT, over the next 12 months. It's a UK scheme run by HMRC, so it doesn't apply to businesses registered for VAT elsewhere. You have to leave once you're no longer eligible, and the exit conditions are set separately from the joining threshold — worth checking HMRC's current guidance if your turnover is growing.
What is a limited cost business?
A business whose spending on goods is less than 2% of turnover, or less than £1,000 a year if costs are more than 2%. Limited cost businesses pay a flat rate of 16.5% instead of their sector rate. The test covers goods only — services like software, accountancy, rent and subcontractors don't count towards it, which is why many consultants and freelancers fall into this category.
Is the flat rate scheme worth it for a freelancer?
Often not, since 2017. Freelancers and consultants typically spend very little on physical goods, which makes them limited cost businesses paying 16.5%. At that rate you hand over close to the full 20% you charged and can't reclaim VAT on expenses, so the standard scheme usually works out cheaper. Run both calculations on your own numbers before deciding.
Can I reclaim VAT on purchases using the flat rate scheme?
Generally no. The main exception is capital assets costing £2,000 or more including VAT in a single purchase — a van or a computer, for example. It applies to goods, not services, so an office refit or a consultancy bill doesn't qualify even if it costs more than £2,000.
How does the 1% first-year discount work?
You take 1% off your flat rate percentage during your first year as a VAT-registered business. Two things catch people out: it runs from your VAT registration date rather than the date you joined the scheme, so joining later means less of it, and you have to remember to put the rate back up afterwards. Forgetting means underpaying VAT, which HMRC will eventually reclaim.