Should I Register for the VAT Flat Rate Scheme? — 2026/27 Decision Guide

The VAT Flat Rate Scheme (FRS) was HMRC's attempt to simplify VAT for small businesses. You charge customers the normal 20% VAT, but instead of reclaiming input VAT on your purchases, you pay HMRC a flat percentage of your gross turnover — and pocket the difference.

When it works, FRS is free money. When it doesn't, it's worse than standard VAT. Most contractors today fall into the "limited-cost trader" trap that HMRC introduced in 2017 specifically to close the loophole — and don't realise it until their accountant tells them they've been overpaying for years.

This guide walks through the maths for the four most common contractor profiles in 2026/27.

How FRS works in 30 seconds

Standard VAT:

1. Charge customers 20% VAT (output VAT)
2. Reclaim 20% VAT on business purchases (input VAT)
3. Pay HMRC the difference

Flat Rate Scheme:

1. Charge customers 20% VAT (output VAT)
2. Pay HMRC a fixed percentage of gross turnover including VAT
3. Cannot reclaim input VAT on most purchases (except capital assets over £2,000)
4. Keep the difference

The flat percentage depends on your trade sector (HMRC publishes the full table). For IT and computer consultancy, it's 14.5%. For management consultancy, 14%. For "any other activity not listed", 12%.

First-year discount: New FRS registrants get 1% off the flat rate for the first 12 months.

The "limited-cost trader" trap (2017 onwards)

HMRC closed the FRS loophole on 1 April 2017 by introducing the Limited Cost Trader category. If your "relevant goods" spend is less than:

• 2% of gross turnover, OR
• £1,000/year (whichever is higher)

…you're a Limited Cost Trader and your flat rate is 16.5% — regardless of trade sector.

"Relevant goods" excludes:

• Services (consultancy, software, training)
• Food, drink, fuel for travel
• Capital expenditure on equipment (vans, computers — these go through a separate route)
• Goods bought for resale unless they're moveable physical items

For most contractors — IT, consulting, design, finance, marketing — almost every business expense is services, fuel, or food. Limited Cost Trader status applies, and the 16.5% flat rate kills the FRS benefit entirely.

Let's prove it.

Worked example 1 — IT contractor, £100k turnover, low expenses

A typical outside-IR35 IT contractor with £200/year of physical goods (cables, peripherals, stationery).

Standard VAT:

• Charge clients: £100,000 + £20,000 VAT = £120,000
• Reclaim input VAT on ~£3,000 of standard-rated expenses: ~£500
• Net VAT to HMRC: £19,500

FRS as Limited Cost Trader (16.5%):

• Charge clients: £120,000 (gross)
• Pay HMRC: 16.5% x £120,000 = £19,800
• Keep the rest: £100,200 inc-VAT, of which £19,500 was VAT collected
• Net VAT to HMRC: £19,800

FRS loses by £300/year vs standard VAT. Worse: you can't reclaim VAT on a new £2,000 laptop unless it's a single capital asset purchase, and you've added admin overhead with no upside.

Worked example 2 — IT contractor, £100k turnover, claiming 14.5% sector rate

What if you didn't fall into Limited Cost Trader? (You won't, but let's see the upside HMRC closed off.)

FRS at 14.5% (pre-2017 dream):

• Pay HMRC: 14.5% x £120,000 = £17,400
• vs standard VAT £19,500
• Saves £2,100/year

That's the gap HMRC closed in 2017. Today, no IT contractor qualifies.

Worked example 3 — Goods-heavy contractor (e.g. tradesperson)

An electrician with £80k turnover, buying £18k/year of materials.

Standard VAT:

• Output: £80,000 x 20% = £16,000
• Input: £18,000 x 20% = £3,600
• Net to HMRC: £12,400

FRS as Limited Cost Trader test:

• Relevant goods (materials): £18,000 = 22.5% of gross turnover → NOT a Limited Cost Trader
• Trade sector "Boilermakers" or similar: ~9.5% flat rate

FRS at 9.5%:

• Pay HMRC: 9.5% x (£80,000 + £16,000) = 9.5% x £96,000 = £9,120
• Saves £3,280/year vs standard VAT

FRS wins. This is exactly the kind of business it was designed for — high goods spend, low admin, simple turnover.

Worked example 4 — Consultant, £80k turnover, first year discount

New management consultancy in year 1 (1% discount → 13% effective).

Limited Cost Trader test: virtually all spend is travel, subsistence, and services → likely classified as LCT.

FRS at 16.5% - 1% = 15.5%:

• Output gross: £96,000
• Pay HMRC: 15.5% x £96,000 = £14,880

Standard VAT (~£1,000 reclaimable input):

• Output VAT: £16,000
• Input VAT: ~£1,000
• Net to HMRC: £15,000

FRS wins by £120 in year 1. From year 2 onwards (full 16.5%), it loses by £880.

If your first-year revenue is much higher than year 2 (e.g., a launched-from-day-1 consultancy with a big initial contract), the year-1 discount can still tip it. For most, it's not worth the lock-in.

When FRS still makes sense in 2026/27

Run the test:

1. Are you a Limited Cost Trader? Check: relevant physical goods (not services) < 2% of gross turnover or £1,000.

- If yes → FRS rate is 16.5% → almost never beats standard VAT. - If no → continue.

1. What's your sector rate? Look up HMRC's table.
2. Calculate effective rate: Compare (sector rate x gross turnover) vs (20% turnover − reclaimable input VAT).

FRS makes sense for:

• Trades with high physical materials (electrical, plumbing, joinery, scaffolding)
• Retailers with mixed-rate goods
• Some catering and hospitality (food sector rates are ~12.5%)
• Wholesalers and importers

FRS rarely makes sense for:

• IT contractors, software developers
• Management consultants
• Designers, marketers, copywriters
• Coaches, trainers
• Lawyers, accountants (own practice)
• Anyone with <£1,000/year of physical goods

What to do if you're already on FRS and shouldn't be

1. Calculate what you'd have paid under standard VAT for the current and previous year.
2. If the difference is meaningful, leave the scheme — write to HMRC, effective from the next VAT period.
3. You cannot retrospectively reclaim input VAT for the period you were on FRS unless you can show HMRC misled you.
4. One-year cooling-off: you can't rejoin FRS for 12 months after leaving.

How AIS handles VAT

/tax/vat shows your current VAT returns, due dates, and a comparison of FRS-vs-standard for your actual revenue and expense pattern. The AI tax agent can run the Limited Cost Trader test against your last 12 months of bookkeeping and flag if you're leaving money on the table.

Next steps

• Read UK Corporation Tax Rates for 2026/27
• See your VAT returns on the VAT page
• Or start a free trial to run the FRS-vs-standard calculator on your numbers