Coinbase 1099-DA: What It Means and What to Fix

If you sold or traded crypto on Coinbase in 2025, you've probably received a Form 1099-DA (or are about to). It's a new form, and for most people it's showing up for the first time. If it looks wrong, it probably is.

The short version: your 1099-DA from Coinbase reports your sale proceeds to the IRS. It is not a complete picture of your tax liability. For most people with any transaction history outside Coinbase, other exchanges, wallets, or DeFi, the cost basis data is incomplete or missing entirely. Filing directly from this form without corrections will almost certainly result in overpaying taxes, sometimes significantly.

2025 is the first year Coinbase is required to send these forms. Previously, Coinbase issued 1099-MISC forms for staking and rewards income, but there was no comprehensive reporting on trades. That's changed. The IRS now requires brokers, including crypto exchanges, to report digital asset dispositions on Form 1099-DA. It's worth understanding what the form actually contains before you hand anything to your accountant or file yourself.

When You'll Get Your Coinbase 1099-DA

Coinbase is required to send 1099-DA forms by January 31, 2026 for the 2025 tax year. Most users will receive an email notification when it's ready. You can also access it directly:

1. Log into your Coinbase account at coinbase.com
2. Go to Settings → Documents (or search "Tax Documents" in the top bar)
3. Download your 1099-DA as a PDF

Not every Coinbase user receives a 1099-DA. If you had fewer than 200 transactions and less than $20,000 in total proceeds, Coinbase may not be required to issue one. This does not mean you don't owe taxes. If you sold, traded, or otherwise disposed of crypto at a gain, that's a taxable event regardless of whether you received a form. The IRS expects you to report it either way.

If you believe you should have received a form but didn't, check your spam folder and the Documents section in your account. If it's simply not there, Coinbase may have determined you fell below their reporting threshold.

What Your Coinbase 1099-DA Shows

The 1099-DA is a transaction-level report. For each sale or disposition, it includes:

• The asset sold (e.g., Bitcoin, Ethereum)
• When you obtained the asset
• When you sold or disposed of it
• The dollar amount you received from the sale

Cost basis is not required to be reported by brokers for the 2025 tax year. The IRS gave exchanges a phase-in period. So your Coinbase 1099-DA may show proceeds for every transaction, but cost basis will either be blank or listed as $0. This is not an error on Coinbase's part. It's how the form works for 2025.

The problem is that $0 or blank cost basis is not your actual cost basis. It just means Coinbase isn't providing it. You still need to report the correct cost basis on your tax return. If you don't, the IRS will treat your entire proceeds as gain, and your tax bill will be far higher than it should be.

For a broader explanation of how the form works across all exchanges, see our full 1099-DA explainer and the complete 1099-DA guide.

The Cost Basis Problem

This is the most important thing to understand about your Coinbase 1099-DA, so let's be precise about it.

Coinbase can only know your cost basis if you bought and sold the asset entirely within Coinbase. If you bought on another exchange and transferred the crypto to Coinbase before selling, Coinbase has no record of what you paid. They can see the proceeds from the sale, but not the purchase price. So they report $0.

A concrete example:

• You bought 1 ETH for $2,000 on Kraken in 2023
• You transferred that ETH to Coinbase in 2024
• You sold it on Coinbase in 2025 for $3,500
• Coinbase reports: proceeds $3,500 / cost basis $0
• Your actual gain: $1,500 (what you profited)
• What the IRS sees from the 1099-DA: $3,500 gain

If you file using just the 1099-DA numbers, you pay taxes on $3,500 instead of $1,500. On a modest ETH position, that could mean hundreds of dollars in extra taxes. On larger portfolios, the difference is substantial.

This isn't a Coinbase-specific flaw. It's a systemic limitation. No exchange can report cost basis for assets that came from outside their platform. But it means the 1099-DA, taken at face value, is not a complete or accurate tax document for most active crypto users.

Common Issues with Coinbase 1099-DAs

Beyond the cost basis gap, there are a few Coinbase-specific situations worth knowing about.

Coinbase vs. Coinbase Advanced Trade

If you used Coinbase Pro (now rebranded as Coinbase Advanced Trade), your transaction history may span multiple accounts. Advanced Trade transactions generally appear under your main Coinbase account, but depending on when you traded and how your account was set up, you may need to verify that all your activity is captured. Check the Documents section in both your standard Coinbase account and any linked Advanced Trade account.

Coinbase Wallet is not included

Coinbase Wallet is a separate, non-custodial product. It's not the same as your Coinbase exchange account. Any DeFi transactions, token swaps, NFT purchases or sales, or other on-chain activity done through Coinbase Wallet will not appear on your 1099-DA. These transactions are still taxable. You're responsible for tracking them yourself, either manually or with a tool that can connect to your wallet address.

Staking rewards are reported separately

Coinbase staking rewards for ETH, SOL, and other assets are typically reported as income on a 1099-MISC, not on your 1099-DA. Your 1099-DA covers dispositions (sales and trades). The receipt of staking rewards is treated as ordinary income at the time of receipt. Make sure you have both forms if you staked anything on Coinbase in 2025.

Coinbase Earn / Learn & Earn

If you completed educational modules through Coinbase Learn and received small amounts of crypto as rewards, those may also be reported as income events. These are typically small in dollar value but technically taxable as income when received.

Convert transactions are taxable

Using the "Convert" feature on Coinbase, for example converting BTC to ETH or swapping to a stablecoin, is a taxable event. Each conversion is treated as a sale of the first asset and a purchase of the second. These will appear on your 1099-DA as sales. The same cost basis problem applies: Coinbase will report proceeds from the conversion, but may not have your original purchase price.

What to Do Before Filing

Don't just hand your 1099-DA to your accountant or drop it into tax software and call it done. Follow this process to file correctly:

1. Download your 1099-DA from Coinbase. Go to Settings → Documents and grab both the PDF and, if available, the CSV version of your transactions.

2. Cross-reference against your full Coinbase transaction history. Export your complete history from Coinbase (Statements → Generate → Transactions). Verify that the transactions on your 1099-DA match what you see. Flag any discrepancies.

3. Identify which assets were transferred in from other platforms. For every asset sold on Coinbase, determine where you originally purchased it. If you bought it elsewhere, you need purchase records from that platform to establish cost basis.

4. Gather records from every platform you've used. If you've ever used another exchange (Kraken, Gemini, Binance, etc.), a hardware wallet, a DeFi protocol, or any other wallet, you need records from there too. Your Coinbase 1099-DA only tells part of the story.

5. Calculate your actual cost basis. For each asset sold, your cost basis is what you originally paid, plus any fees on purchase. If you're using FIFO, LIFO, or HIFO accounting methods, the calculation depends on which lots you're selling. Read our guide to cost basis methods if you're unsure which method to use.

6. Report each transaction on Form 8949. Every sale or disposition goes on Form 8949 with the correct proceeds and cost basis. The 1099-DA gives you the proceeds. You supply the cost basis. The difference is your gain or loss. Gains flow to Schedule D of your Form 1040.

If you have dozens or hundreds of transactions, doing this manually is painful. That's what crypto tax software is for.

How Moonscape Fixes This

Moonscape is built specifically for this problem. When you connect your Coinbase account via API key or by importing your transaction CSV, Moonscape pulls in your complete transaction history, not just the numbers on your 1099-DA.

More importantly, Moonscape connects to 300+ other exchanges and wallets. When you sold ETH on Coinbase that you originally bought on Kraken, Moonscape sees both sides of the trade. It matches the incoming transfer to its original purchase lot and calculates your actual cost basis automatically.

The result: accurate gain and loss calculations using your preferred accounting method (FIFO, LIFO, or HIFO), reconciled against your Coinbase 1099-DA, with a completed Form 8949 ready to attach to your return.

Import your Coinbase transactions in under 2 minutes at moonscape.app.

You don't need to sort through years of transaction history manually or hope that your accountant has time to do it. Connect your accounts, let Moonscape calculate everything, and file with confidence.

Key Takeaways

• Your Coinbase 1099-DA reports gross proceeds from sales to the IRS. Cost basis is not required for the 2025 tax year, so it may show $0 or be blank.
• Filing from the 1099-DA without correcting cost basis will almost always result in overpaying taxes, sometimes significantly.
• Coinbase can only know your cost basis for assets bought and sold entirely within Coinbase. Transferred-in assets show $0 by definition.
• Coinbase Wallet DeFi activity and staking rewards are not included in your 1099-DA. You must account for these separately.
• The correct fix is to gather records from all platforms, calculate true cost basis, and file Form 8949 with accurate figures, not to rely on the 1099-DA alone.