You don't have a side hustle.
You have a business.
Your spreadsheet says you made $340 this month. It forgot the eBay fees, the shipping labels, and what you paid for half the items. Soldbook doesn't forget.
Free tier includes 50 tracked items. No credit card required.
Founding members: $79/yr locked forever — first 100 users only
See it in action
Your business dashboard -- revenue, profit, best flips, and platform breakdown at a glance.
Quick-add from your phone -- 10 seconds, works offline.
Tax-Ready Report -- Schedule C mapped, 1099-K reconciled, CPA-ready.
Built for how resellers actually work
True Profit per Item
That $45 sale was actually $19.83 after fees, shipping, and the $12 you paid at the estate sale. Soldbook does that math on every item, automatically.
Quick-Add on Mobile
Standing in a Goodwill aisle with a cart full of maybes? Snap, enter cost, done — 10 seconds an item, works with zero bars, syncs when you're back.
Tax-Ready Report
The 1099-K shows your gross. The IRS wants to know your net. Soldbook hands you the Schedule C numbers and the reconciliation that explains the difference.
Import Any Spreadsheet
Your $50 reseller spreadsheet served you well. Upload it and migrate your full history in 10 minutes.
No Scraping. No Extensions.
Your accounts are never at risk. Official APIs and CSV imports only — no browser extensions, no scraping, no suspensions.
Death Pile Tracker
Yes, it tracks your death pile. No, it won't judge you.
Get set up in 10 minutes
Import your data
Upload your spreadsheet or connect eBay. We auto-detect your columns — no reformatting.
Log your sourcing costs
Match sales to what you paid. Quick-add new finds from your phone while you're still at the thrift store.
Know your real numbers
True profit per item, per month, per platform. Tax report ready when your CPA asks.
Built for US marketplace resellers doing $500 to $100K per year.
Stop guessing. Start knowing.
The books for everything you've sold.
Start free trial — no card required