Record Keeping for Resellers: What to Track
Most resellers can tell you their revenue and almost none can tell you their profit. Tracking a handful of numbers per item turns reselling from a feeling into a business. (General information — for your tax obligations, speak to a qualified accountant in your country.)
The minimum per item
Purchase price, purchase date, sale price, sale date, fees and shipping. Six fields. That's enough to compute everything that matters.
A simple spreadsheet is fine. The discipline matters far more than the tool.
The numbers it unlocks
Real profit per item after fees, average days to sell, and the share of purchases that never sold — the metric almost nobody tracks and everybody needs.
You'll quickly see which categories genuinely earn and which just feel productive.
Why it changes behaviour
Once you can see that a category averages 90 days to sell, you stop buying it. Records don't just report the past — they correct your sourcing.
Resale IQ's portfolio tracking does this alongside the market data, so your own results sit next to the market's.
Tax
Rules differ by country and by whether reselling counts as regular activity for you. Keep records from day one so you're never reconstructing history, and get advice from a qualified professional before it matters.
Frequently asked questions
What records should a reseller keep?
Per item: purchase price, purchase date, sale price, sale date, fees and shipping. Those six fields let you compute real profit, average days to sell, and the share of stock that never sold.
Do I need to declare reselling income?
It depends on your country and whether your activity counts as regular trading. Keep complete records from the start and consult a qualified accountant in your jurisdiction — this article is general information, not tax advice.
Resale IQ turns 30M+ Vinted sales into one answer: BUY, WATCH, or SKIP — with buy-below price and best sizes.
Try Resale IQ →