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IRS document upload: the size limit and what it accepts
The IRS Document Upload Tool has a different cap from USCIS, which trips people who have used both. Here are the numbers, and the three reasons a submission comes back.
The short answer. The IRS Document Upload Tool commonly accepts up to 15 MB per file, with a limited number of files per submission, in PDF, JPG, JPEG and PNG. Files must not be password-protected or encrypted.
The limits
| What | Limit |
|---|---|
| Maximum size per file | 15 MB |
| Files per submission | Typically up to 40 |
| Accepted formats | PDF, JPG, JPEG, PNG |
| Password protection | Not permitted |
| Recommended resolution | 300 DPI for scanned pages |
Checked against the published IRS guidance in August 2026. The IRS changes these without notice — confirm on the tool itself before a deadline.
Why a submission comes back
The file is over 15 MB
Photographing four pages of a notice on a modern phone puts you past 15 MB before you have added anything. Reducing to 300 DPI and using bitonal for typed pages usually cuts 90% without touching legibility.
The reference number is missing
The tool ties your upload to a specific letter or notice. Uploading correct documents against the wrong reference is a filing failure that has nothing to do with the file itself, and it is common.
The page is not readable
An IRS reviewer reads figures. A shadow across a column of numbers, or glare over a total, will draw a follow-up letter even when your documentation is complete.
15 MB at the IRS, 12 MB at USCIS. There is no shared federal standard. A file prepared for one is not automatically fine for the other, and the DS-160 photo is stricter than both at 240 KB.
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