VAT Flat Rate Scheme: When It Costs You More Than It Saves

What Is the Flat Rate Scheme?

The VAT Flat Rate Scheme (FRS) lets eligible businesses pay a fixed percentage of their gross (VAT-inclusive) turnover to HMRC, rather than calculating VAT on every individual sale and purchase. The idea is simplicity: you charge customers 20% VAT, but only pay HMRC a lower flat rate — keeping the difference as a small profit.

To join, your VAT-taxable turnover must be £150,000 or less. Once on the scheme, you can stay until your total business income exceeds £230,000, at which point HMRC will remove you.

When the Flat Rate Scheme Works in Your Favour

The FRS tends to suit freelancers and sole traders who:

• Have low business costs and purchase very little that includes VAT
• Work in sectors with a low flat rate percentage (e.g. computer and IT consultancy sits at 14.5%)
• Want to reduce bookkeeping time and avoid detailed VAT reconciliation

For example, a freelance copywriter with a flat rate of 14.5% charging £10,000 plus VAT (so £12,000 gross) would pay HMRC £1,740, keeping £660 compared to standard VAT where the difference is zero if no VAT on costs is reclaimed.

When It Works Against You

The FRS becomes a bad deal when your VAT-reclaimable costs rise. Under standard VAT accounting, you reclaim the VAT on business purchases — software subscriptions, equipment, professional fees, subcontractors. Under the FRS, you generally cannot reclaim VAT on purchases, except for certain capital assets over £2,000 (inclusive of VAT).

Watch out for these warning signs:

• You've hired subcontractors: If you're paying subcontractors who charge VAT, you can't reclaim that input VAT under FRS. This can cost you thousands per year.
• Your costs have significantly increased: New software, equipment, or office costs may now make standard accounting more tax-efficient.
• You're in a high flat rate sector: Some sectors carry rates above 12%, eroding the benefit quickly.
• You've become a 'limited cost trader': If your VAT-inclusive costs are below 2% of your VAT-inclusive turnover, or below £1,000 per year, HMRC classes you as a limited cost trader and applies a 16.5% flat rate — often making the scheme a net loss.

How to Check If You're Losing Out

Run a simple comparison for the last 12 months. Calculate what you actually paid HMRC under FRS, then add up all the VAT you paid on business purchases and subtract it from the VAT you collected from clients. If the second figure is lower than the first, standard accounting would have saved you money.

How to Switch Back to Standard VAT Accounting

Leaving the FRS is straightforward. You have two options:

• Voluntary withdrawal: Write to HMRC or use your VAT online account to request withdrawal. You can leave at any time, though HMRC expects you to stay for at least 12 months unless your circumstances change materially.
• Compulsory withdrawal: HMRC will remove you automatically if your total business income exceeds £230,000, or if you no longer meet the eligibility criteria.

Your withdrawal date is usually the date you request it, or the start of the next VAT period — confirm this with HMRC when you apply. Once off the scheme, you'll submit standard VAT returns, reclaiming input VAT on all eligible business costs as normal.

Key Takeaway

The Flat Rate Scheme is a useful tool, not a permanent solution. Review it annually — especially if your business costs have grown, you've taken on subcontractors, or your turnover mix has shifted. A quick calculation could reveal you're handing HMRC more money than necessary every quarter. If in doubt, speak to an accountant before switching, as the move cannot always be reversed immediately.