VAT Flat Rate Scheme and the Limited Cost Trader Rule Explained (2026/27)
How the VAT Flat Rate Scheme works in 2026/27, why the 16.5% limited cost trader rate catches many service businesses, and when the scheme still saves money.
What the Flat Rate Scheme is designed to do
The VAT Flat Rate Scheme was introduced to simplify VAT accounting for small businesses. Instead of calculating VAT owed as the difference between VAT charged on sales (output VAT) and VAT paid on purchases (input VAT) — the standard method — a business on the Flat Rate Scheme simply applies a single fixed percentage to its total VAT-inclusive turnover and pays that amount to HMRC, keeping the difference between what it charges customers (at the standard 20% rate) and what it hands over under the flat rate.
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HMRC noticed that many service-based businesses — consultants, IT contractors, many professional advisers — had very low genuine costs (they buy few physical goods, mostly billing for their time), yet were still able to use a generous sector-specific flat rate designed around businesses with real material costs. This created an unintended, and in HMRC's view unfair, VAT windfall for low-cost service providers.
The limited cost trader rule closed this gap. A business is classed as a limited cost trader in a given VAT period if its spending on "relevant goods" is either:
- Less than 2% of its VAT-inclusive turnover, or
- Less than £1,000 a year (pro-rated for shorter periods), even if that is more than 2% of a very small turnover.
Limited cost traders must use a fixed 16.5% flat rate, regardless of what their normal trade sector percentage would otherwise be.
What counts — and crucially, what does not — as "relevant goods"
The definition of relevant goods is deliberately narrow. It excludes:
- Capital expenditure (laptops, equipment, machinery)
- Vehicle costs, including fuel (unless the business is in transport and uses its own vehicles)
- Food and drink for the business owner or staff
- Anything provided as a benefit to employees
This means many businesses with genuinely significant costs — for example, an IT consultant who spends heavily on software subscriptions (a service, not goods) or on a new laptop (capital expenditure) — still fail the 2% test, because none of that spending counts as "relevant goods" under the rule.
Worked example: why 16.5% removes most of the benefit
Suppose a self-employed consultant has VAT-inclusive turnover of £60,000 in a year (net turnover £50,000, output VAT £10,000 at 20%).
Under the limited cost trader flat rate (16.5%):
VAT payable = 16.5% × £60,000 = £9,900
Under standard VAT accounting (assuming the consultant has very little input VAT to reclaim, being a low-cost service business):
VAT payable ≈ £10,000 (output VAT) − minimal input VAT ≈ close to £10,000
The gap between the two methods is small — just £100 in this example — which illustrates exactly why the 16.5% rate was designed to remove most of the Flat Rate Scheme's benefit for limited cost traders, leaving only a marginal saving that barely compensates for the scheme's administrative simplicity.
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Given how little financial benefit remains once the 16.5% rate applies, many advisers recommend that businesses consistently classed as limited cost traders review whether standard VAT accounting — which allows genuine input VAT reclaims on services, subscriptions and other costs not counted as "relevant goods" under the Flat Rate Scheme test — produces a better overall outcome. For a business with meaningful software, subscription or professional service costs (none of which help pass the limited cost trader test but which are fully reclaimable input VAT under standard accounting), leaving the Flat Rate Scheme can often improve the net VAT position.
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What is the VAT Flat Rate Scheme?
It is a simplified VAT accounting scheme for small businesses (turnover up to £150,000 excluding VAT to join) where you charge customers standard VAT but pay HMRC a fixed percentage of your VAT-inclusive turnover, based on your trade sector, rather than working out the exact input and output VAT difference on every transaction.
What is a limited cost trader?
A limited cost trader is a Flat Rate Scheme business that spends very little on goods (not services) — specifically, less than 2% of its VAT-inclusive turnover, or less than £1,000 a year even if that is more than 2%, on relevant goods. Limited cost traders must use a fixed 16.5% flat rate, regardless of their normal trade sector percentage.
Why does the limited cost trader rule matter so much?
It was introduced specifically to stop service-based businesses with minimal goods costs (such as consultants, IT contractors and many other professional service providers) from using generous sector flat rates designed for businesses with genuine material costs, effectively closing what HMRC viewed as an unintended tax advantage.
What counts as 'relevant goods' for the 2% test?
Relevant goods must be used exclusively for the business and cannot include capital expenditure (such as equipment), vehicle costs, food, drink, or anything provided to employees as a benefit — this narrow definition of goods is why many service businesses, even those with real costs, still fail the test and get pushed onto the 16.5% rate.
Is 16.5% actually worse than the normal VAT accounting method?
For a limited cost trader, 16.5% of VAT-inclusive turnover works out to almost exactly the equivalent of paying the full 20% VAT on net turnover, with only a small residual benefit remaining, meaning the Flat Rate Scheme offers little to no advantage for a business classed as a limited cost trader, compared with the modest genuine savings normal sector rates can offer.
Should a service business leave the Flat Rate Scheme if classed as a limited cost trader?
In most cases, yes, it is worth reviewing whether standard VAT accounting, or the Flat Rate Scheme at the normal sector percentage (if the limited cost trader test is not always met), produces a better result, since the administrative simplicity of the Flat Rate Scheme becomes less valuable once the 16.5% rate removes most of the financial benefit.
Does the limited cost trader test apply every VAT quarter?
Yes, in principle it can be assessed on a quarter-by-quarter basis, meaning a business could be a limited cost trader in one quarter (paying 16.5%) and not in another (paying its normal sector rate), depending on actual goods spending in that specific period.
Can a new business still benefit from the 1% first-year discount on the Flat Rate Scheme?
Yes, a 1% discount off the applicable flat rate (whether the sector rate or the 16.5% limited cost trader rate) is available for the first year of VAT registration, though this modest discount does not fully offset the impact of being classed as a limited cost trader for a genuinely low-cost service business.
Does using the Flat Rate Scheme mean I cannot reclaim VAT on purchases?
Generally no separate input VAT reclaim is available on standard purchases under the Flat Rate Scheme (the flat rate is designed to broadly account for this), except for capital assets costing more than £2,000 including VAT, which can still be reclaimed separately under specific Flat Rate Scheme capital goods rules.
How do I know if I should leave the Flat Rate Scheme entirely?
Compare your actual output VAT collected minus a realistic estimate of input VAT you could otherwise reclaim under standard accounting, against what you would pay under the Flat Rate Scheme percentage that applies to you; if standard VAT accounting consistently produces a lower net VAT bill, or if administrative simplicity is no longer worth the cost, it is usually time to deregister from the Flat Rate Scheme specifically.
Try the calculators
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Related reading
Flat Rate VAT and the Limited Cost Trader Trap Explained
How the VAT Flat Rate Scheme works in 2026/27, why the limited cost trader 16.5% rate wipes out the saving, and how to decide if it still pays.
VAT on Distance Selling: Thresholds for UK Online Sellers in 2026/27
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Going Self-Employed Mid-Career in 2026/27: Trading Allowance to VAT Threshold
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