Why the VAT Flat Rate Scheme Is Usually the Wrong Choice for Goods Sellers

The Flat Rate Scheme is often presented as a VAT simplification. Pay one percentage of your gross sales, forget the input/output reconciliation, done. For a service business with few costs that is sometimes true. For a marketplace or ecommerce seller who buys stock, imports goods and pays overseas platform fees, it is usually a false economy. This page explains why, and shows you how to model the difference before you elect.

The short answer: FRS is usually a false economy for goods sellers

Under the Flat Rate Scheme you pay a single percentage of your gross VAT-inclusive turnover to HMRC and keep the difference between that payment and the 20% VAT you charged customers. The scheme was designed for businesses with very few input costs, where the input VAT recovery under the standard scheme would be small anyway.

For a goods seller the two killers are: (1) most goods sellers are classed as limited cost businesses and must use the highest rate in the scheme, 16.5%; and (2) you give up all input VAT recovery on your stock purchases. For a reseller buying £40,000 of stock a year, that foregone recovery is £8,000. The scheme is not a shortcut; it is a tax increase dressed as an admin saving.

How FRS works (one paragraph)

Once registered, you charge customers VAT at the standard 20% rate as normal. At the end of each VAT period you apply your flat rate percentage to your gross VAT-inclusive sales (turnover including the VAT you collected) and pay that amount to HMRC. You keep the spread between what you collected from customers and what you pay to HMRC. You do not deduct input VAT on purchases (except for a single capital item costing more than £2,000 including VAT). The maths only works in your favour if your flat rate percentage is materially lower than 20% and your input VAT costs are small.

Killer one: the 16.5% limited cost business rate catches most goods sellers

The limited cost business test works as follows: if your spend on relevant goods is less than 2% of your VAT-inclusive turnover, or less than £1,000 a year, you must use the 16.5% rate. Relevant goods for this purpose are physical goods you use in your business, but the rules exclude food, drinks, vehicles, fuel for vehicles, capital expenditure items, and goods used for resale if they are not used in the business itself. The practical result is that platform sellers who source cheaply (high-margin resellers, importers with low landed costs relative to selling price) often find their relevant goods spend falls below 2% of turnover, and they are pushed into the 16.5% bracket.

At 16.5% of gross (VAT-inclusive) turnover, the maths look like this for a seller with £120,000 gross sales (£100,000 net plus £20,000 VAT collected):

That £200 retention sounds like a gain. But it is only a gain if your input VAT under the standard scheme would have been zero. As soon as you are buying stock, paying storage, buying packaging, or incurring other VATable costs, the standard scheme recovery rapidly exceeds £200.

Killer two: you forfeit input VAT recovery on stock

This is the big cost for any reseller or importer. Under the standard VAT scheme every VATable purchase you make produces an input VAT credit you set against your output VAT. Under FRS, there is no such credit. The VAT your supplier charged you is simply a cost.

Consider a seller buying £40,000 of stock per year from UK-VAT-registered suppliers at 20% VAT. Under the standard scheme that is £8,000 of input VAT recovered each period. Under FRS it is lost entirely. No flat rate percentage advantage comes close to bridging an £8,000 annual gap on a £100,000 turnover business.

The effect is even sharper for importers using postponed VAT accounting. Under the standard scheme a VAT-registered importer can account for import VAT on the return and recover it in the same period, producing zero net cash outflow. Under FRS that import VAT is also irrecoverable. This is why FRS and importation are a particularly poor fit.

The marketplace-fee wrinkle

Overseas platform fees (Amazon, Shopify, Meta ads, Google Ads billed from non-UK entities) are reverse-charge services under Notice 741A. You self-account for the VAT: you record both an output VAT entry and an input VAT entry on your return. Under the standard scheme those entries net to zero, leaving no extra cost. Under FRS the position is different: the output VAT on reverse-charge services increases your gross turnover figure, against which the flat rate is applied. The input VAT credit still does not flow through. For a seller paying material overseas platform fees, this makes the FRS calculation less favourable than the headline rate implies.

See the VAT on marketplace fees page for detail on how reverse-charge fees interact with your overall VAT position, and ecommerce VAT compliance for scheme selection as part of a full VAT setup.

When FRS might still make sense

FRS is not wrong in every situation. It can work where your business has very low relevant goods costs relative to turnover: for example, a digital-goods seller, a pure service-model seller, or a drop-shipper who does not take title to physical stock and has minimal UK-VATable costs. In those cases the low-materials profile means the limited cost test is less likely to bite at its worst rate, and the admin saving of not tracking input VAT on dozens of purchase invoices may be genuine.

But for a marketplace seller buying, importing, storing and shipping physical goods, these conditions rarely hold. The higher your stock costs, the worse FRS looks.

Model it before you elect: a worked comparison

The following sketch uses rounded figures for illustration. Your actual position depends on your margins, your stock sourcing, and your mix of VATable costs.

These are illustrative figures. Run the same comparison using your actual stock costs and input VAT, and the direction of the answer will almost always point the same way for a goods seller.

The seller take-home calculator lets you model the margin impact of your VAT scheme choice alongside your overall cost structure.

Common failure modes

Electing FRS at VAT registration as a default. Accountants who handle both service and product businesses sometimes suggest FRS at registration because it is simpler to administer. For a service business that is often fine. For a goods seller it is a default that needs to be actively refused or modelled first. Always ask: what is my expected input VAT on stock?

Missing the limited cost test. Sellers who elect FRS assuming they will pay a low sector rate (say, 7.5% for a retail category) and then find they are actually a limited cost business paying 16.5% face a nasty surprise on their first return. HMRC applies the limited cost test quarterly; if your relevant goods spend drops below 2% in any period, you pay 16.5% for that period regardless of which sector rate you thought applied.

Conflating turnover with bank deposits. The FRS is applied to gross VAT-inclusive turnover, which for a marketplace seller means gross sales, not the net amount deposited after platform fees. HMRC's VAT registration rules make clear that turnover is gross taxable sales; the same gross basis applies to the FRS calculation. Sellers who model FRS on their bank deposits systematically underestimate what they will owe.

If you are approaching VAT registration for the first time and unsure which scheme fits your business, the ecommerce VAT compliance service covers scheme selection as part of the registration process. For sellers on Amazon in particular, see the Amazon sellers hub for the full VAT picture including import VAT, the £135 rule and fee treatment.