Free crypto tax software usually means free to track, pay to file. Here are the best options for small portfolios in 2025 — Koinly, CoinLedger, and ZenLedger compared.
filing crypto taxes as a casual investor feels like getting hit with a surprise boss battle. you made a few trades, swapped some tokens, maybe earned a little defi yield — and now you're staring at a spreadsheet wondering if you owe the IRS your lunch money.
here's the thing about "free" crypto tax software: almost all of it is free to track, pay to file. you can import your transactions, see your gains, and preview a report — but actually generating the tax forms you need for filing usually costs something. that's the honest truth, and we're not going to pretend otherwise.1
for small portfolios — under 100 transactions, casual traders, people who just want to get it done without spending more on software than they made in crypto — here are the three best options.
| Koinly | CoinLedger | ZenLedger | |
|---|---|---|---|
| Free tier | Unlimited transaction import, capital gains preview | Unlimited transaction import, free portfolio tracking | Up to 25 transactions free |
| Report cost | From $49 (single year) | From $49 (single year) | From $49 (single year) |
| Exchange support | 700+ exchanges & wallets | 400+ exchanges & wallets | 400+ exchanges & wallets |
| Best for | International users | UX & simplicity | Tiny portfolios (≤25 txns) |
koinly's free tier is generous: you can import an unlimited number of transactions from over 700 exchanges and wallets, preview your capital gains, and see exactly what you'd owe before paying a cent.1 it supports 20+ countries' tax frameworks, making it the best pick if you're outside the US or trade across multiple jurisdictions.
when you're ready to file, a single-year report starts at $49. koinly also offers a dedicated desktop app and a mobile app for on-the-go portfolio tracking.
specs:
coinledger's whole pitch is "import for free, preview for free, pay only when you need the PDF."2 the interface is clean, modern, and genuinely pleasant to use — which matters when you're staring at a year's worth of trades. it supports 400+ exchanges and wallets, and the free portfolio tracking gives you real-time views of your holdings.
if you only need to see where you stand and don't need to file formal reports, coinledger might be all you need. reports start at $49 when you're ready.
specs:
zenledger's free tier is the most limited of the three — it covers up to 25 transactions. but if that's all you have, it's genuinely free end-to-end. no surprise fees, no upsell for the first 25 trades.1 it's built specifically for US filers and integrates directly with IRS forms (8949, Schedule D, etc.).
for portfolios that stay small, this is the most cost-effective option. beyond 25 transactions, reports start at $49.
specs:
the key distinction across all of them is free tracking vs. free reporting. none of these tools will generate your actual tax forms for free (except zenledger's 25-transaction tier). but all of them let you import, preview, and understand your tax situation before you pay — which is genuinely useful.
for a small portfolio, the math is simple:
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