An IT contractor billing £80,000 a year registers for VAT and considers joining the Flat Rate Scheme. On paper it looks simple: charge 20% VAT to clients, pay HMRC a lower flat percentage, keep the difference. In practice, the limited cost trader rule changes the maths significantly for most service-based contractors — and often not in their favour.
For most IT contractors in 2026, the VAT Flat Rate Scheme produces a net benefit of £20–£60 per month at best. Standard VAT accounting is usually the right choice.
How the Flat Rate Scheme works
Under the VAT Flat Rate Scheme (FRS), instead of tracking every penny of VAT you collect and reclaim, you pay a single flat percentage of your gross (VAT-inclusive) turnover to HMRC. If you charge £10,000 + VAT (£12,000 total) and your flat rate is 14%, you pay £1,680 to HMRC and keep the £320 difference. Simple — and profitable, when the flat rate is low.
Most IT and technology sector rates under FRS are between 12% and 14.5%. At 14%, the profit on a £12,000 monthly invoice is: £2,000 − (£12,000 × 14%) = £320. That's a useful £3,840 per year.
The problem: most IT contractors are "limited cost traders"
In 2017, HMRC introduced the limited cost trader rule to stop service businesses from profiting excessively from FRS. If your VAT-inclusive expenditure on goods is below 2% of your turnover, or below £1,000 per year — you must use a flat rate of 16.5%, regardless of your sector.
The critical word is goods. For VAT purposes, goods means physical, tangible items — hardware, stationery, office supplies. It does not include:
- Software subscriptions (Microsoft 365, Adobe, Slack)
- Cloud services (AWS, Azure, Google Cloud)
- Professional memberships and training courses
- Accountancy, legal, and professional services
- Travel costs
An IT consultant who spends £150/month on software and cloud but zero on physical goods has effectively no qualifying goods spend. They're a limited cost trader. Their flat rate is 16.5%.
The real numbers at 16.5%
| Monthly invoice (ex-VAT) | VAT collected at 20% | FRS payment at 16.5% | Monthly profit |
|---|---|---|---|
| £5,000 | £1,000 | £6,000 × 16.5% = £990 | £10 |
| £8,000 | £1,600 | £9,600 × 16.5% = £1,584 | £16 |
| £10,000 | £2,000 | £12,000 × 16.5% = £1,980 | £20 |
| £15,000 | £3,000 | £18,000 × 16.5% = £2,970 | £30 |
£10–£30 per month profit is not nothing, but it needs to be weighed against the administrative burden of checking whether you qualify as a limited cost trader each quarter and maintaining the FRS records. For many contractors, it's simply not worth it.
Golden nugget: your first year gets a 1% discount
In the first year of VAT registration, HMRC gives you a 1% reduction on your flat rate. For a limited cost trader, this brings the rate from 16.5% to 15.5%. At a £10,000/month invoice: profit goes from £20 to £140 per month — still modest but meaningfully better. If you're newly registered, the scheme is slightly more attractive in year one than it appears at headline rates.
When FRS is genuinely worth it for IT contractors
There are scenarios where FRS remains valuable even for IT professionals:
- You regularly buy significant hardware. If you purchase servers, specialist equipment, multiple monitors, or development hardware worth more than 2% of your quarterly turnover — you escape the limited cost trader classification. At £10,000/month turnover, 2% is £200/month in goods. Achievable if hardware is part of your work.
- Your sector rate is genuinely low. If HMRC classifies you under a category like "computer and IT consultancy" at 14.5%, and you're not a limited cost trader, you profit £660 per month on a £10,000 invoice. Worth keeping.
- Very high turnover. At £30,000/month, even £60 FRS profit per month is £720 per year for minimal effort.
Standard VAT: the often-overlooked alternative
On standard VAT accounting, you pay the difference between VAT you've collected and VAT on purchases. For a service contractor with few purchases, this means paying close to the full 20% VAT you collect. The difference between that and 16.5% on large invoices is minimal.
What standard VAT gives you that FRS doesn't: the ability to reclaim VAT in full on significant purchases. Buy a £2,000 laptop — reclaim £333 in VAT. Buy specialist software with VAT — reclaim it. Under FRS, you cannot reclaim VAT on purchases (except assets costing over £2,000). For contractors who occasionally buy expensive equipment, standard VAT can actually be better.
Golden nugget: check your software before switching
Switching from FRS to standard VAT (or vice versa) must happen at the start of a VAT period. Your accounting software (FreeAgent, Xero, QuickBooks) handles both — but you must update the settings at the right time and reconcile the transition period correctly. Moving mid-quarter creates accounting errors that are time-consuming to untangle. Plan the switch for the start of your next VAT quarter.
Use the calculator to check your position
Input your monthly revenue, your actual goods spend, and your expected sector rate — and the VAT Flat Rate calculator shows you exactly whether FRS, standard accounting, or cash accounting gives you the better outcome for your specific situation. Many contractors are surprised by the result.
Written by Desh Naidoo-Cann · Founder, Apex Assets Group · MBA Finance
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Frequently asked questions
If I leave the FRS, can I rejoin later?
What counts as 'goods' for the limited cost trader test?
Can I still reclaim VAT on a large capital purchase under FRS?
Important: This article is for general information only and does not constitute tax or legal advice. Tax rules change — always verify with HMRC or a qualified accountant before making decisions. Published 11 April 2026 for 2026-27.