The VAT margin scheme lets you account for VAT on the difference between what you paid for a second-hand watch and what you sold it for, rather than on the full selling price. The VAT is one sixth of that margin. You can use it when you bought the watch without recoverable VAT - from a private individual, from a part-exchange, at auction on the hammer, or from another dealer who sold it to you under the scheme - and the rules are set out in VAT Notice 718.

The scheme is optional per item, but the record-keeping is not. If HMRC cannot verify your margins from your records, VAT falls due on the full selling price.

The arithmetic

Buy a Submariner from a private seller for £7,200. Sell it for £9,000.
Selling price £9,000
Purchase price £7,200
Margin £1,800
VAT due (margin × 1/6) £300

Without the scheme, on a £9,000 standard-rated sale you would owe £1,500. That £1,200 difference is why the scheme exists and why the paperwork discipline is worth it.

When you can use it

Notice 718 sets three conditions that all have to hold:

  1. The goods are eligible. Second-hand goods, works of art, antiques or collectors' items. A pre-owned watch is a second-hand good.
  2. You acquired them in eligible circumstances. In practice, no VAT was recoverable by you on the purchase. That covers private individuals, non-VAT-registered businesses, part-exchanges from consumers, hammer purchases where no VAT invoice was raised, and dealer-to-dealer purchases made under the margin scheme.
  3. You meet the record and invoicing rules. See below, and see our separate piece on what the stock book must contain.

You cannot use it where the seller gave you a VAT invoice showing VAT separately. That watch is standard-rated on the full price when you sell it, and you reclaim the input VAT.

Buying from another dealer

If a UK dealer sells you a watch under the margin scheme, their invoice must carry the wording "Margin Scheme - second-hand goods" (Notice 718, paragraph 5.3). That endorsement is what lets you sell it on under the scheme.

Get it in writing before the money moves. A verbal "yeah it's margin" is worth nothing at an inspection, and if the invoice is silent you are exposed. This is the single most common way dealers lose the scheme on a piece.

The trap that costs real money

Service, polishing and parts do not reduce your taxable margin.

Notice 718 is blunt about it: "You must not add any of these costs to the purchase price of the goods you sell under the scheme."

So take the same Submariner, but you spend £600 plus £120 VAT on a service before it sells.
Selling price £9,000
Purchase price (margin base) £7,200
Taxable margin £1,800
VAT due on margin £300
Service cost (net) £600
Your actual gross profit £1,200

You pay VAT as though you made £1,800 when you made £1,200.

The compensating point, which dealers miss just as often in the other direction: the input VAT on that service is separately reclaimable in the normal way. The £120 goes in Box 4. It just does not touch the margin calculation.

Two different VAT treatments for money spent on the same watch. That asymmetry is the reason margin-scheme bookkeeping is so easy to get wrong by hand, and it is the reason your real per-piece profit and your VAT-taxable margin are never the same number.

Costs that do form part of the purchase price

The purchase price is what you paid the seller for the goods. Where a genuine cost is part of acquiring the goods themselves rather than improving them afterwards - an auction house's buyer's premium invoiced as part of the goods, for example - the position can differ. This is fact-specific and it is worth a five-minute call with your accountant rather than a guess, because it moves the margin on every auction lot you buy.

Invoicing

Under the margin scheme, VAT must not be shown separately on either the purchase invoice or the sales invoice. That is not a style preference; showing VAT separately breaks the scheme.

Your sales invoice must show (paragraph 5.3):

  • Your name, address and VAT registration number
  • The buyer's name and address
  • The stock book cross-reference number
  • Invoice number and date of the transaction
  • A description of the item
  • The total price, with no VAT shown separately
  • The statement "Margin Scheme - second-hand goods"

Your purchase invoice - which for private purchases you will be writing yourself - must show the seller's name and address, your name and address, an invoice number, the date, a description, the total price with no separate VAT, and, if it came from a VAT-registered dealer, a reference to the margin scheme.

For a counter purchase from a member of the public, you produce that document and the seller signs it. It is your only evidence of purchase price, and purchase price is half of the tax calculation.

Negative margins

If you sell a watch for less than you paid, there is no VAT due. But under the item-by-item margin scheme you cannot offset that loss against the profit on another watch. Each item stands alone.

The exception is global accounting, where a negative overall margin for a period is carried forward to the next period (Notice 718, paragraph 14.8) - but global accounting is only available for low-value bulk goods where no individual item cost more than £500, which excludes essentially every watch worth listing. See global accounting for mixed lots.

What the scheme does not cover

Notice 718, paragraph 2.8: you must not use a margin scheme for precious metals, investment gold or precious stones.

For watch dealers this matters in two places:

  • A gold watch case sold for scrap at metal value is outside the margin scheme entirely and inside the gold reverse charge.
  • Diamonds removed from a bezel and sold loose are outside the scheme.

A gold watch sold as a watch, at watch money, is fine.

Records and retention

Keep everything for at least six years, and longer for stock you still hold - Notice 718 requires records for stock on hand to be kept beyond six years if the item has not yet sold. For a dealer holding a piece for four years, that means the purchase paperwork needs to survive a decade.

Paragraph 5.1 states the consequence of failure directly: if HMRC cannot check the margins you have declared from your records, VAT is due on the full selling price of the goods you supplied, even if they were otherwise eligible. On a £9,000 watch that is the difference between a £300 liability and a £1,500 one, per piece, across the whole assessment period.

Sources

This is general information, not tax advice. The margin scheme is fact-sensitive and the treatment of acquisition costs in particular varies with how the deal was papered. Confirm your position with your accountant, and read Notice 718 in full before you rely on any of this.

WatchCRM works out the taxable margin and your real gross profit as two separate figures, because they are, and keeps the service and parts VAT on a reclaimable line rather than netting it off. The stock book and the scheme wording on the invoice come out of the same record.