Tax center

The Tax center is where you manage your organization’s tax information — add cost basis for deposits, access tax documents, and manage tax certifications, all in one place.

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Cost basis

When you deposit assets into Anchorage Digital that you acquired elsewhere, we know the date they arrived but not what you originally paid for them or when you first acquired them. That original price and date — the cost basis — is what determines your gain or loss when you later sell or move the asset, and it’s required for accurate tax reporting. Provide cost basis and acquisition dates for deposits by downloading, editing, and uploading a CSV through the Cost basis tab. If you need to submit a large number of tax lots across many deposits, providing cost basis via API may be more efficient. Contact your client experience team to learn more. For general questions about cost basis and tax reporting, see the cost basis FAQ.

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Completing the report

Download the report from the Cost basis tab, edit it locally, then upload the updated version.

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CSV columns

The deposits report CSV contains two types of columns: Pre-populated columns (do not modify):

• Account ID — Account name associated with the deposit.
• Deposit ID — Unique identifier for the deposit transaction. This is the only pre-populated column used to match your updates to the correct deposit — the rest are for your reference and aren’t validated during upload.
• Deposit date & time — Date and time in YYYY-MM-DDThh:mm:ssZ format.
• Asset type — Asset type on the deposit (e.g., BTC, ETH).
• Deposit quantity — Total quantity deposited.

Columns you must fill in:

• Lot quantity — The amount of the asset in the specific tax lot.
• Lot cost basis — The total cost of this tax lot in US dollars.
• Lot acquisition date & time — The date the asset was acquired in YYYY-MM-DDThh:mm:ssZ format.

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Handling multiple tax lots

A single deposit can have multiple tax lots if the asset was acquired on separate occasions.

• Single tax lot: Fill in the required fields on the existing row. The lot quantity must equal the deposit quantity.
• Multiple tax lots: Duplicate the row for each additional lot, keep the pre-populated fields identical across all rows, then fill in the lot details for each. The sum of all lot quantities must equal the deposit quantity.

For example, a deposit of 5 BTC could break down into three lots: 1 BTC acquired for $100, 2.5 BTC acquired for$500, and 1.5 BTC acquired for $400, each on a different date.

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Validation rules

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Upload and review

Save your file as a CSV and upload it through the Cost basis tab.

• If we find no errors, your cost basis updates immediately.
• If some rows have errors, we process the valid rows and generate a new error report with only the failed rows and details on how to fix them. Correct the file and re-upload it.

If you have questions or run into upload issues, contact support.

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Documents

The Documents tab lets you view, filter, and manage your organization’s tax documents, such as 1099-MISC forms.

• Filter documents by document type or account.
• Download documents by selecting the ones you need and selecting Download, or use the bulk download option to download all available forms.
• Share tax documents by emailing them directly to recipients.
• Select View expected tax document issue dates to see when we expect specific document types to be available.

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Managing tax document delivery

Select the more options menu, then select Manage tax document delivery to add or remove recipients. Anyone you add receives an email notification whenever a new tax document becomes available.

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Tax settings

The Tax settings tab shows the tax certification status for each of your accounts. Tax certifications confirm your organization’s tax information and are required for accurate tax reporting. Each account shows one of three statuses: To certify an account, select it, then select Complete. If the certification needs attention, select Update instead, then fill in and submit the form. For questions about IRS forms, FATCA, and treaty benefits, see the tax certification FAQ.

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Related topics

• Reporting — View statements and download balance and transaction reports
• View operations — Review pending and past account operations
• Configure document delivery — Manage distribution lists for statements and tax documents