Income Tax e-Filing Portal Attachment Limits.
| Document | Format & Size |
|---|---|
| Single Attachment File Limit | PDF, Under 5 MB (5120 KB) |
| Maximum Number of Attachments | 10 PDFs per submission |
| Combined Zip Attachment Limit | 50 MB Max Zip Size |
Last verified: August 2026
Income Tax portal document submission rules.
When responding to e-Proceedings, Section 143(1) / 148 notices, or attaching Form 16 and bank statements on incometax.gov.in, each individual PDF must not exceed 5 MB.
Scanned annual bank statements or multi-page tax audit books easily reach 15–30 MB. Zcompressor compresses these documents under 5 MB while maintaining financial table legibility.
Your files stay on your device.
Your confidential financial records, PAN details, and tax audit files never cross remote cloud servers.
Frequently Asked Questions.
The maximum file size for a single PDF attachment on the Income Tax e-Filing portal is 5 MB, with up to 10 PDF attachments permitted per response.