New for tax year 2025 · Form 1099-DA is live

The IRS already has your 1099-DA. Does it show what you actually owe?

Broker forms report proceeds — not your full cost basis, wallet transfers, or losses on other platforms. Basisfyle reconciles everything so the number you file is the number that's true.

✓ No wallet connection needed ✓ Read-only — no signatures, ever ✓ No private keys required

Works with major exchanges and wallets

CoinbaseKrakenBinance.USGeminiMetaMaskLedgerPhantom
Why Basisfyle

We do the math. You keep the difference.

A 1099-DA reports what one broker saw. Your taxes depend on everything they didn't.

See how much you actually owe

We sync your crypto activity across exchanges and wallets, then calculate your tax liability — not the inflated number on an incomplete form.

How it works →
Total capital gains$31,337.42
Total income$48,112.88
Losses surfaced−$18,460.00

Make sense of your 1099-DA

This new IRS form can report proceeds with zero cost basis — making 100% of a sale look like profit. We reconcile it to help you avoid paying more than you owe.

Read the 1099-DA guide →
As reported to IRS
$84,210
Basis missing · looks fully taxable
→
After reconciliation
$12,940
Example with full cost basis

Every transaction type covered

Trades, transfers, DeFi swaps, staking, NFTs, bridging, margin — each one classified and matched to its true cost basis.

See integrations →
  • ✓ Common cost-basis methods, including FIFO
  • ✓ Wallet-to-wallet transfers excluded from gains
  • ✓ Staking and airdrops classified as income

File in minutes, not days

Export a report formatted for import into major tax-filing software, or hand your CPA a clean, line-by-line report with a full audit trail.

About exports →
  • ✓ Form 8949 — every disposal, line by line
  • ✓ Schedule D — totals ready to file
  • ✓ CPA audit trail documenting every adjustment
How it works

Sync. Reconcile. Relax.

Three steps between you and a number you can defend.

1

Connect everything

Link exchanges via read-only API, add wallet addresses, and import your 1099-DA forms. Transfers between your own accounts are tracked automatically.

2

We reconcile the ledger

Every disposal is matched to its true acquisition cost. Non-taxable transfers are flagged, and losses your forms missed are surfaced before you file.

3

File with confidence

Generate Form 8949, Schedule D, and an audit trail that explains every difference from the broker's numbers. E-file or hand it to your CPA.

See the full walkthrough →
The engine

Every transaction, accounted for

Trades, transfers, swaps, staking, NFTs — each one is classified and matched to its true cost basis.

Illustrative examples of transaction types Basisfyle can classify and reconcile.

✓ Read-only connections — we can never move funds
✓ No private keys or seed phrases, ever
✓ Export or delete your data anytime
Resources

Helpful articles and guides

Everything you need to know about the new era of crypto tax reporting.

📄
Guide · 10 min read

Form 1099-DA explained: what brokers report — and what they can't

The biggest change to crypto taxes yet, and the blind spots that can inflate your bill.
🧮
Blog · 6 min read

Missing cost basis: why your gains look bigger than they are

What happens when proceeds are reported without basis, and how to fix it before filing.
💡
Blog · 7 min read

Tax-loss harvesting for crypto: a practical 2026 playbook

Turn losing positions into potential savings without changing your market exposure.
FAQ

Frequently asked questions

Starting with tax year 2025, crypto brokers file Form 1099-DA with the IRS to report your digital asset sales. The IRS now sees your proceeds before you file — but the form often lacks complete cost basis, which can make your gains look much larger than they really are.
Three common reasons: (1) the broker doesn't know what you originally paid if you bought elsewhere, so basis is reported as zero or blank; (2) transfers between your own wallets can be misread as taxable sales; (3) losses on other platforms never appear on a single broker's form. All three inflate your apparent gain.
Never. Exchanges connect via read-only API keys, and wallets are added by public address only. We can see transaction history, but no one — including us — can move your funds.
A Form 8949 and Schedule D report formatted for import into major tax-filing software, plus a line-by-line reconciliation your CPA can use to explain any difference from broker-reported numbers.
That's exactly what Basisfyle is built for. It is built to handle high-volume histories, including swaps, staking rewards, bridging, and NFT trades, with each adjustment documented in the audit trail.
No — Basisfyle is software that organizes and reconciles your transaction data. For decisions about your specific situation, talk to a qualified tax professional. Many CPAs work directly from our reports.

File the number that's true

Import your accounts today and see your reconciled gain in minutes — before the IRS even asks.

Get your IRS-ready report → See how it works