Your 2026 crypto gains, lot by lot
Drop your exchange or wallet history. Lotsift matches every sale to the coins you bought, first-in, first-out within each account, splits short-term from long-term, picks the Form 8949 box and totals staking income — and shows which open lots are under water before December 31. It runs in your browser; nothing is uploaded.
How it works
- Drop your transaction history (CSV or Excel), one file per exchange or wallet — or try the sample or the template.
- Read the 2026 totals and every check: missing history, sends to wallets not in the file, Convert rows to split.
- Give the Form 8949 lines to whoever prepares your return, or type prices to see what's worth harvesting before December 31.
Why Lotsift
For people who buy, sell and stake crypto on an exchange or two — not funds or market makers — who want their 2026 gains, the Form 8949 lines and a year-end harvest view without uploading their history to anyone.
From the export you already have
Coinbase's transaction report works as is. Any CSV or Excel with a date, type, asset, quantity and USD value works too, one file per account.
FIFO, wallet by wallet
Lots are matched first-in, first-out within each account, the way basis has to be tracked since 2025. Buy fees add to basis; sale fees come off proceeds.
Transfers keep their basis
Moving coins from an exchange to your own wallet isn't a sale. The lot keeps its date and cost, so a later sale is long-term when it should be.
The right Form 8949 box
Boxes G, H and I for short-term, J, K and L for long-term — by whether a 1099-DA reported the basis. Staking and rewards are listed as ordinary income.
A harvest view before December 31
Type today's prices and see each open lot's unrealized gain or loss, short- or long-term, while there's still time to act in 2026.
Print or export
Print the summary, or with Pro get the Form 8949 CSV for your tax software or preparer, an Excel workbook and the open lots.
Simple pricing
Free for the 2026 totals, the boxes, the harvest view and every check. Pro for every Form 8949 line and the exports.
Free
- Any number of rows
- 2026 totals, boxes G–L, harvest view and every check
- First 10 Form 8949 lines, print with a footer
- No signup, nothing uploaded
7-day pass
- 7 days of Pro, no subscription
- Every Form 8949 line, print without footer
- Form 8949 CSV and Excel workbook
- Open lots CSV
Pro Monthly
- Everything in Pro
- For year-end harvesting and filing season
- All exports
- Cancel anytime
Pro Yearly Best value
- Everything in Pro
- Re-check your lots any time of year
- Costs less than 6 months of monthly
Prices in USD. Secure checkout and sales tax handled by our payment partner. Already bought? Enter your license key.
Tools & guides
- Crypto capital gains calculator
- Form 8949 lines for crypto, from your CSV
- Crypto Tax-Loss Harvesting Before December 31, 2026
- Form 1099-DA: What Your Exchange Reports for 2026
- Crypto Transfers Between Wallets: Keeping Your Cost Basis
- An alternative to CoinLedger for a simple crypto year
- An alternative to TokenTax for exchange-only traders
FAQ
What does Lotsift do?
It reads your crypto transaction history and works out your 2026 capital gains and losses: each sale matched to the coins you bought, first-in, first-out within each account, split into short-term and long-term, with the Form 8949 box for each line. Staking and rewards income is totalled separately. It doesn't file anything.
Is my data uploaded?
No. Your file is read by JavaScript in your browser tab and never sent to us or anyone else. Transactions aren't stored, so closing the tab clears them. Settings can be saved in this browser.
Which Form 8949 box does each line go in?
Digital assets use boxes G, H and I in Part I (short-term) and J, K and L in Part II (long-term): G or J when a Form 1099-DA reported the basis, H or K when it didn't, I or L when there's no 1099-DA. Lotsift guesses from the account name and the date — brokers report basis for coins bought in the account from 2026 — and the form you receive wins.
When is a gain long-term?
When you held the coins more than one year. A sale on the one-year anniversary is still short-term; the day after is long-term.
How are transfers, fees and rewards handled?
A Send and a Receive between your own accounts moves the lots with their original date and cost. A buy fee adds to basis and a sale fee comes off proceeds. Staking, rewards and airdrops are ordinary income at their USD value when received, and that value becomes their basis.
What about crypto-to-crypto trades?
A trade is a sale of one coin and a purchase of the other. Enter a Sell row and a Buy row with the same date and USD value. Convert or swap rows are flagged, not guessed.
What's free?
Importing any number of rows, the 2026 totals, the totals by box, the harvest view and every check, plus the first 10 Form 8949 lines on screen and in print (with a footer). Pro shows and prints every line and exports the Form 8949 CSV, the Excel workbook and the open lots CSV.
What isn't covered?
It doesn't handle every DeFi case: liquidity pools, lending, staking derivatives, wrapping, bridges and LP tokens need your own treatment. Also not covered: state tax, the collectibles rate for NFTs, margin and futures, mining or business income, gifts and inheritances, specific-identification lot choices and wash-sale adjustments (a loss with a rebuy of the same asset within 30 days is flagged, not changed). It's FIFO only and US dollars only.
Is this tax advice?
No. Lotsift applies the rules it describes to the data you provide. Ask your tax adviser what applies to you.