Insights
The knowledge centre for card-seller finances
VAT, inventory, valuations and profit — written by an accountant who works in trading cards.
Guides that pay for themselves
Why Your Spreadsheet Breaks at 500 Cards
The spreadsheet that organised your first 100 cards becomes the file you’re scared to touch. The seven failure modes — and the staged path off before it breaks.
Fee’s, Fees & Fee… What are they actually buying you?
The headline commission isn’t the real number. How the full fee stack — payment fees, fixed charges, VAT on the lot — decides what a sale actually pays you.
Cost Basis, DONE PROPERLY
Singles are easy — collections are where cost basis falls apart. How to allocate a £500 lot across 300 cards so every sale shows its true profit.
The Real Profit Problem
Turnover is easy — every platform shows it. Real profit is the number most card sellers can’t answer, and the gap quietly costs them.
Live Card Comping: Price Smarter, Sell Faster, Profit More
Real-time valuations turn missed opportunities into profit — comping live on streams, shows and stores.
Sole Trader or Limited Company: Tax, Risk & Growth Explained
The structure decision every serious card seller eventually faces — and how to make it with the numbers, not guesswork.
When the Market Dips, Can You Still Play Your Best Hand?
Staying profitable through a down market: pricing discipline, inventory hygiene and cash-flow control.
Inventory Management: Why It Makes or Breaks Sellers
Your stock is your business. Why card-level inventory control is the foundation everything else sits on.
How to Stop Overpaying VAT as a Card Seller
Most card sellers pay more VAT than they need to. The margin scheme, done properly, changes that.
What Is A2X? And Why Every Shopify Breaker Needs It
Connecting Shopify payouts to real accounting — the missing link for breakers running serious volume.
If You’re a Card Collector
Turning a serious collection into a properly tracked portfolio — value, cost basis and the records that matter.
Bookkeeping Blunders
The most common bookkeeping mistakes card sellers make — and what each one quietly costs you.
The Card Industry Boom — and Why It’s Still Growing
The professionalisation of the card market, and what it means for sellers building real businesses.
Why Choose On Top Accounts for Your Card Selling Business
Where OTA came from and what it does differently for trading card businesses.
Prefer answers about your own numbers?
30 minutes with the founder — we’ll map your platforms, fees and stock, and tell you what we’d fix first.