Records, insurance and UK tax basics for collectors who sell

Once you sell regularly, three boring things protect you: a proper inventory, insurance that actually covers cards, and knowing which UK tax rules might apply to you.

Key takeaways

Keep a record of every purchase and sale: date, card, what you paid, what you sold for, and fees.
Standard home contents insurance often limits or excludes collections — check the policy wording and declare high-value items.
The UK has a trading allowance for small amounts of trading income; above it, income may need reporting.
Selling personal possessions can engage Capital Gains Tax rules, with exemptions for lower-value items.
This is general information, not tax advice. If money is meaningful to you, speak to an accountant.

There is a point where a hobby starts generating money and paperwork stops being optional. None of this is difficult, but it is much easier done as you go than reconstructed a year later from marketplace emails.

The inventory that pays for itself

One row per card: set, number, printing, condition, date bought, price paid, fees, where from.
Add a column for date sold, sale price and fees when it leaves.
Photograph valuable cards front and back when they arrive, and keep the files.
Store the file somewhere backed up, not only on one device.
This one sheet answers insurance claims, tax questions and 'what did I pay for this?' at once.

Insurance

Most home contents policies have a single-item limit and specific rules about collections and valuables. Read yours rather than assuming, tell your insurer what you hold, and ask whether cards away from the home — at a show, or in the post — are covered at all. Postal compensation from the carrier is a separate and usually much smaller safety net.

UK tax, at a high level

If you are buying to resell as a business-like activity, that is trading income. GOV.UK sets out a trading allowance for small amounts, above which income needs reporting.
If you are selling personal possessions you collected, the Capital Gains Tax rules on personal possessions may apply instead, with exemptions for lower-value items and rules on sets.
Which one applies depends on your facts — how often you buy and sell, and your intention when buying.
Marketplaces report some seller information to tax authorities, so assume your sales are visible.

A simple routine

Log every purchase the day it arrives, with the receipt saved.
Log every sale with the fees, on the day it sells.
Photograph anything valuable on arrival.
Review your insurance once a year, or after any large addition.
If your selling grows beyond pocket money, get one hour with an accountant.

Selling to us gives you a single documented transaction with a priced list of every card, which makes your records much simpler.

Sell with a receipt →

Common questions

Do I have to pay tax on selling Pokémon cards in the UK?: It depends whether you are trading or disposing of personal possessions, and on the current allowances and exemptions. GOV.UK explains the trading allowance and the Capital Gains Tax rules on personal possessions; check the current figures and speak to an accountant if amounts are meaningful.
Does home insurance cover a Pokémon card collection?: Often only partly. Policies commonly have single-item limits and specific wording about collections and valuables, so read yours, declare high-value cards, and check whether items in transit are covered at all.
What records should I keep as a collector?: For each card: set, number, printing, condition, date and price bought, fees, and the same for the sale. Add arrival photographs for anything valuable and keep it backed up.
Am I a business if I sell cards sometimes?: Not necessarily. It turns on how regularly you buy and sell and what your intention was when buying. If you are unsure, that is exactly the question to put to an accountant.

A video version of this guide is planned for the DeuxyDex channel.

Sources

Prices, pull rates and set details change. Where we could not verify a claim, we left it out.