Last month I wanted a simple answer: how much did I make (or lose) on my Ethereum trades?
Every tool I found wanted $49 to $279 per year, an account, a subscription, and access to my exchange credentials. I hold ETH in a self-custody wallet. I just wanted a P&L report and a CSV for my accountant.
So I built one.
ChainFolio takes your public Ethereum wallet address, pulls your full transaction history, runs FIFO cost-basis calculations, and gives you a P&L summary with a downloadable tax report. No account. No login. No subscription. $10 one-time.
How it works
- Paste your ETH wallet address (up to 5 wallets)
- Get an instant free preview — total P&L, transaction count, wallet summary
- Pay $10 in USDC on Base for the full report — every transaction, cost basis, gains/losses, CSV export
The preview is completely free. You see your numbers before you pay anything.
Why I built it this way
The competitors all follow the same playbook: create an account, connect your exchange, pick a tier, pay annually. That makes sense if you're a heavy trader across 10 chains.
But most ETH holders aren't that. They bought some ETH, maybe swapped a few tokens, and now they need to report it on their taxes. They don't need a $279/yr platform. They need a report.
So I stripped everything down:
- No account required (your wallet address is public data)
- No exchange connections
- One-time payment, not a subscription
- USDC on Base (low fees, no credit card needed)
The tax angle
The IRS now requires Form 1099-DA for crypto transactions starting in 2026. That means a lot of casual ETH holders are suddenly realizing they need cost-basis records they never kept. The October 15 extension deadline is still months away — but most people will wait until September to panic.
ChainFolio is built for that moment.
Try it
The free preview costs nothing and takes 30 seconds: https://chainfolio-lovat.vercel.app
Paste any ETH wallet address and see your P&L instantly. If it's useful, the full report is $10.
I'd genuinely appreciate any feedback — this is early and I want to make it better.
