This guide applies to users who are filing crypto taxes in the United States.
If you are not a US taxpayer, this feature does not apply to you.
What is Form 1099-DA?
Form 1099-DA (Digital Asset Proceeds From Broker Transactions) is a US tax form introduced for the 2025 tax year. It is issued by crypto exchanges to report crypto disposals (including selling, trading, or spending crypto) to both you and the IRS.
Summ ingests your 1099-DAs and automatically compares them against your complete transaction history. It identifies matches, flags differences, and helps align your report with what your exchanges reported while maintaining accurate calculations across all your activity.
This removes the need to manually compare your exchange reports with your data and helps ensure your tax filings are consistent with what the IRS receives.
A 1099-DA only reflects activity from a single exchange and does not include your full transaction history. As a result, transactions may be missing and gains or proceeds may differ from your actual tax position. This is expected.
Summ calculates your taxes using your complete transaction history across all exchanges and wallets. This is why your Summ report may differ from your 1099-DA. Your 1099-DA should be used as a reference from your exchange, while your Summ report reflects your complete tax calculation across all of your activity.
1099-DAs apply to transactions from January 1, 2025 onwards and are first issued in early 2026. Summ does not issue 1099-DAs — your exchange provides them.
The 1099-DA Portal
To access the 1099-DA portal:
Go to Reports → 1099-DA (right-hand panel)
Click Upload 1099-DA.
You will see a list of exchanges and their status.
From here, you can:
Upload
Delete
Check status
View your Disposal Summary
1099-DA overall status in the Reports page
The 1099-DA section shows your overall status:
Optional → No action taken yet
In Progress → One or more exchanges are not resolved
Complete → All exchanges are resolved
An exchange is considered resolved when:
A 1099-DA is uploaded, or
You mark “I won’t receive one”
How to complete your 1099-DA in Summ
Step 1 — Review your exchanges
Step 1 — Review your exchanges
Open the 1099-DA portal.
You will see:
Each exchange connected to your account
A status for each exchange
This is where you manage your 1099-DA uploads.
Step 2 — Resolve every exchange (until status is Complete)
Step 2 — Resolve every exchange (until status is Complete)
For each exchange, you must choose how to resolve it.
Completing this step is optional, but strongly recommended if you want your report to align with what your exchange reported to the IRS.
Option A — Upload your 1099-DA
Option A — Upload your 1099-DA
Choose this if you received a 1099-DA from the exchange.
Click Upload next to the exchange
Upload your 1099-DA file
Option B — Mark that you will not receive one
Option B — Mark that you will not receive one
Choose this if you know the exchange will not issue a 1099-DA.
Click the three-dot menu
Select “I have not received a 1099-DA”
Click “I won’t receive one”
This marks the exchange as ‘Not expected’. You can upload one later if you receive your 1099-DA.
Option C — Wait for your 1099-DA
Option C — Wait for your 1099-DA
Choose this if you expect to receive the form but haven’t received it yet.
Select “Wait for 1099-DA”
The exchange remains unresolved, and your status will stay In Progress.
After resolving your exchanges
Your status will show Complete only when all exchanges are resolved
If any exchange is still Not started, your status will remain In Progress
Step 3 — Review and confirm your data
Step 3 — Review and confirm your data
After uploading, click View (or Continue) to start the review flow.
Summ will:
Match your 1099-DA transactions with your transaction history
Compare proceeds between both sources
Highlight any differences
What you can do
Review matched transactions
See differences in proceeds
Choose:
Use Summ proceeds (recommended), or
Use 1099-DA proceeds
You can apply changes:
Per transaction
Or to all transactions
Important to understand
Uploading a 1099-DA does not automatically change your report.
Your Summ tax reports use your full transaction history
Cost basis is calculated using complete data
The 1099-DA is used to compare proceeds
You remain in control — nothing is changed unless you confirm it.
What happens after you upload your 1099-DA
After uploading, Summ compares your 1099-DA with your transaction data.
Transactions are matched automatically where possible
Proceeds are compared between both sources
Differences are flagged for review
If differences exist, you will be guided through the review flow to resolve them.
Disposal Summary
This table shows how your 1099-DA compares to your full transaction history.
Column | What it means |
Category | Type of transaction (e.g. Sell, Fee) |
Asset | The cryptocurrency sold |
Sold Date | When the transaction happened |
Quantity | How much was sold |
Cost Base | Your calculated purchase cost (from full history) |
Proceeds | Sale value used in your report |
1099-DA Reported | Whether the transaction appears on your 1099-DA |
You can manually mark whether a transaction is included on your 1099-DA.
Important:
“No” does not mean the transaction is ignored
It will still be included in your tax report
Why differences are normal
Differences may occur because:
1099-DA reflects only one exchange
Summ includes your full transaction history
Examples:
Multiple exchanges
Transfers
Wallet activity
Supported exchanges for 1099-DA matching
Not all exchanges currently support automatic matching.
You can upload a 1099-DA for any exchange listed in your 1099-DA portal.
However, automatic matching and comparison are only available for supported exchanges.
You can tell if an exchange is supported when:
You are able to click View or Continue after uploading
Then, the review flow opens and shows matched transactions
If an exchange is not supported:
The review flow may not be available
Automatic matching may not occur
You can still use the ‘Disposal Summary’ to review and adjust transactions manually
Support for additional exchanges is continuously being expanded.
FAQs
Q1: What do I need to do after uploading my 1099-DA?
After uploading, click View (or Continue) for each exchange and complete the review flow.
This allows you to compare your 1099-DA with your transaction data and confirm any differences before downloading your report.
Q2: Do I need to complete 1099-DA before downloading my tax report?
No. You can download your tax report at any time.
However, completing the 1099-DA review flow is recommended if you want your report to align with what your exchange reported to the IRS.
Q3: Why is my 1099-DA still “In Progress” even after uploading my forms?
Your status depends on whether every exchange is resolved, not just whether you uploaded forms.
If any exchange is still marked as:
Not started
Waiting for 1099-DA
your status will remain In Progress.
To complete it, you must either:
Upload a 1099-DA, or
Mark the exchange as “I won’t receive one”
Q4: Does Summ use my 1099-DA to calculate cost basis?
No. Summ calculates cost basis using your full transaction history across all accounts.
The 1099-DA is only used to compare proceeds and help validate your report.
Q5: Should I upload my 1099-DA before generating my report?
You can generate your report at any time.
However, it is recommended to upload and review your 1099-DAs so your report aligns with what your exchange reported to the IRS.
Q6: Why doesn’t my 1099-DA match my Summ report?
Your 1099-DA only reflects activity from a single exchange and does not include your full transaction history.
Summ calculates your taxes using your complete transaction history, which is why differences are expected.
Q7: What if a transaction is not on my 1099-DA?
The transaction may still be taxable.
The 1099-DA only includes what the exchange reports, not your full activity.
Your Summ report includes all transactions from your complete history.
Q8: Are wallet transactions included in my 1099-DA?
No. Self-custody wallets are not reported on 1099-DAs.
Only activity from the issuing exchange is included.
Q9: What if I uploaded the wrong file?
You can delete and re-upload your 1099-DA at any time:
Go to Reports → 1099-DA
Click the three-dot menu
Select Delete
Upload the correct file
Still need help?
If you have any questions or need help, we're here for you! Feel free to reach out to us via the in-app chat in the bottom-right corner or send your inquiries to [email protected]