Your stock is one of the biggest numbers on your balance sheet — and one of the easiest to get wrong.
Quick answer. Value your card stock at the lower of what you paid for it (including shipping, duty and grading) and what you can realistically sell it for now. UK rules don’t let you write stock up to market value — only down.
For most trading card businesses, stock is the single largest asset you own. Whether it’s sealed product, singles, graded slabs or bulk, the value you put on it at your year end directly changes your profit, your tax bill and what your accounts say about your business. So it’s worth getting right.
The golden rule under UK accounting standards is simple: stock is valued at the lower of cost and net realisable value. In plain terms, you value each item at what you paid for it, unless you now expect to sell it for less than that — in which case you use the lower figure.
What “cost” actually includes
Cost isn’t just the price on the invoice. It’s the purchase price plus any costs of bringing the stock into a saleable condition — think inbound shipping, import duty, and grading or authentication fees where you’ve paid to have a card slabbed. Those costs sit in the value of the stock until it sells, rather than hitting your profit straight away.
The market-value trap
Cards are unusual because their market value moves constantly, and often upwards. It’s tempting to value that Charizard at what the market says it’s worth today. You can’t. Accounting standards don’t let you write stock up to market value — unrealised gains only get recognised when you actually sell. You only move away from cost when the value has fallen below it.
Net realisable value — the “lower” side of the rule — is the price you realistically expect to sell for, less any selling costs such as platform fees and postage. If a set has crashed since you bought it, or product is damaged or slow-moving, that’s when you write it down.
Getting it right in practice
- Count it. A physical stocktake at year end is non-negotiable — reconcile what’s on the shelf to what your system says.
- Keep purchase evidence. You need to prove cost, item by item or by batch. This also matters hugely for VAT if you use the Margin Scheme.
- Watch bulk and “ripped” product. When you open a sealed box to sell singles, the cost of the box becomes the cost of the singles — spread it sensibly.
- Flag the dead stock. Slow movers and damaged cards should be reviewed for a write-down, not left at full cost.
How this works in practice at month end
In reality you value closing stock at month end, and you almost never trace the exact inbound shipping, duty and grading back to each individual card still on the shelf — that would be impractical at card volume. The principle still holds (cost includes those directly attributable costs), but the method flexes, guided by materiality: accounting standards require a true and fair view, not perfection.
Three approaches make it workable. First and best, let your inventory system carry a landed cost per item: some systems apportion inbound shipping and duty across the units in a purchase at the point you receive stock, so the closing valuation is already on a landed-cost basis with no month-end tracing. Most card-specific platforms don’t do this, so it often isn’t available without a dedicated inventory tool.
Second, where that isn’t available, use a periodic allocation: take your total inbound shipping and duty for the period and apportion it across stock on a consistent basis (by value or quantity of goods still held versus sold). It’s an estimate, but a defensible, consistent one — which is all the standards require. And where those inbound costs on your unsold stock are genuinely immaterial to the accounts, you can simply value closing stock at purchase cost and expense the add-ons as incurred.
Grading is the easy exception: it’s a per-item cost you usually know specifically, because you pay to slab an individually identifiable card. So graded cards should carry their grading cost individually — and since slabs are higher-value, that’s exactly where the precision is worth it. In short: value sealed product and singles at purchase cost (with inbound costs landed-in by your system or treated as immaterial), and record grading against the specific slab.
Done well, stock valuation isn’t just compliance — it’s the foundation of knowing your real margin. And that’s the number that runs your business.
