Edit your transaction details

With Coinbase Taxes, it's important that your gains and losses are accurately reflected in your transaction data. 

Depending on your transaction types, we recommend that you review and edit certain details to make sure your taxable events are properly reflected. 

Receiving crypto from an external source

When you receive crypto from an external source with your Coinbase account, we don’t have access to the cost basis (original value or purchase price) or date acquired. As a result, we estimate your gain/loss using a cost basis of $0 and treat the date received on Coinbase as the date acquired. 

Sending cryptocurrency to an external address

When you send crypto to a wallet address outside of Coinbase, we don’t have access to the address to know if you sent it to yourself or someone else. As a result, we assume that you continue to own your cryptocurrency and that there is no tax impact. 

Edit your eligible transaction details

To add transaction details on a browser: 

  1. Sign in to your Coinbase account.

  2. Select Migrated from https://help.coinbase.com/content/dam/help/articles/consumer/icons/Avatar.png, updated at Mon Apr 11 2022 12:52:36 GMT-0700 (Pacific Daylight Time) and choose Taxes.

  3. Select the Activity tab and choose Add details in the Missing details module.

  4. Select Add details for each transaction that needs details added.

  5. Enter the following details:

    • Reason for transaction

    • Date acquired (purchase date)

    • Total cost basis (purchase price)

  6. Select Save.

Download a new gain/loss report when you’re done. 


To edit transaction details that you've added: 

  1. Sign in to your Coinbase account.

  2. Select Migrated from https://help.coinbase.com/content/dam/help/articles/consumer/icons/Avatar.png, updated at Mon Apr 11 2022 12:52:36 GMT-0700 (Pacific Daylight Time) and choose Taxes.

  3. Select the transaction in Your tax activity.

    • The transaction is labeled with Modified.

  4. Select the Modified tab and expand the correct transaction.

  5. Select Edit.

  6. Enter the following details:

    • Reason for transaction

    • Date acquired (purchase date)

    • Total cost basis (purchase price)

  7. Select Save.

Download a new gain/loss report when you’re done. 

To add transactions details on the Coinbase mobile app:

  1. Access the Coinbase mobile app.

  2. Select App switcher more menu and choose Taxes.

  3. Select the Activity tab and choose Add details in the Missing details module.

  4. Select Add details for each transaction that needs details added.

  5. Enter the following details:

    • Reason for transaction

    • Date acquired (purchase date)

    • Total cost basis (purchase price)

  6. Select Save.

Download a new gain/loss report when you’re done. 


To edit transaction details that you've added: 

  1. Sign in to your Coinbase account.

  2. Select App switcher more menu and choose Taxes.

  3. Select the transaction in Your tax activity.

    • The transaction is labeled with Modified.

  4. Select the Modified tab and expand the correct transaction.

  5. Select Edit.

  6. Enter the following details:

    • Reason for transaction

    • Date acquired (purchase date)

    • Total cost basis (purchase price)

  7. Select Save.

Download a new gain/loss report when you’re done. 


  • Coinbase is unable to determine the cost basis of assets received as a gift

  • To determine the cost basis, we recommend that you reach out to the person (or entity) who gifted you the asset

  • Information you provide isn't currently shared with the IRS and isn't currently included in any tax documents that Coinbase is required to send directly to the IRS 

  • This information is only used to help us better calculate your gains/losses 

  • You're responsible for consulting with your own professional tax advisors concerning specific tax circumstances for your business

  • Coinbase disclaims any responsibility for the accuracy or adequacy of any positions taken by you in your tax returns

  • Although Coinbase can't provide legal or tax advice, the US Internal Revenue Service has released guidelines for how to report and pay taxes relating to virtual currency activity

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