Don’t Overpay Your Crypto Taxes: The IRS Form 1099-DA Explained

The IRS has been quietly rolling out a brand new crypto tax reporting system that is going to change everything for crypto investors. Form 1099-DA — designed to track your digital asset transactions directly at the exchange level — is coming. And if you’re not ready, you could end up paying taxes on gains you never actually made.

This isn’t fearmongering. This is a real, documented risk that is already catching investors off guard. Here’s everything you need to know to protect yourself.

What Is Form 1099-DA and Why Does It Matter?

Form 1099-DA is the IRS’s new mandatory reporting form for digital asset brokers — including cryptocurrency exchanges like Coinbase, Kraken, and Gemini. Starting with 2025 transactions, exchanges are required to report your crypto sales directly to the IRS, similar to how traditional brokers report stock sales via Form 1099-B.

On the surface, this sounds like a straightforward reporting requirement. But the devil is in the details — specifically, the cost basis reporting problem.

The Cost Basis Problem That Could Cost You Thousands

Here’s the critical issue: if your exchange doesn’t have a complete record of what you originally paid for your crypto (your cost basis), they may report your cost basis as $0.

What does that mean in practice? Let’s say you bought 1 Bitcoin for $30,000 in 2021, transferred it to a cold wallet for security, then transferred it back to an exchange and sold it at $60,000 in 2025. Your actual gain is $30,000. But if the exchange only sees the $60,000 sale and has no record of your original purchase, they report $0 cost basis — and the IRS sees $60,000 in taxable gains. That’s a $30,000 overcalculation of your taxable income.

How to Protect Yourself Before Tax Season

1. Gather all historical purchase records — Pull transaction histories from every exchange you’ve ever used, going back to your first crypto purchase. Email confirmations, exchange CSV exports, even screenshots count.
2. Use a crypto tax tracking tool — Software like CoinTracker, Koinly, or TaxBit can aggregate your transaction history across wallets and exchanges to calculate accurate cost basis.
3. Designate your accounting method — FIFO (First-In-First-Out) is the default, but HIFO (Highest-In-First-Out) or Specific Identification may reduce your tax bill significantly. Choose your method before selling.
4. Keep hardware wallet records — Any time you move crypto off an exchange, document the cost basis of what you’re moving. This protects you if that crypto comes back to an exchange later.
5. Work with a crypto-savvy CPA — Not all tax professionals understand cryptocurrency. Find one who does, especially if you have significant holdings or complex transaction history.

Tax-Loss Harvesting: Turn Your Losses Into a Strategy

Unlike stocks, cryptocurrency is not subject to the IRS wash-sale rule (as of this writing). This means you can sell crypto at a loss, immediately repurchase it, and still claim the tax loss. For investors holding crypto in a down year, this can be a powerful way to offset gains and reduce your tax bill. Document everything carefully and consult a tax professional.

Next Steps for 45–65 Crypto Investors

• Use My Financial Picture to understand how your crypto holdings fit into your overall retirement tax strategy
• Get tax relief help now if you’ve already received a notice or believe you have reporting gaps
• Use our Financial Calculators to model your capital gains tax exposure before you sell
• Compare crypto exchanges to find platforms with better cost basis tracking tools