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Accounting And Audit 28 September 2026

Sept 30 Tax Audit Deadline: Penalties, Checks, Common Errors

The tax audit filing deadline in India remains September 30 with no extension granted. Late submissions can attract penalties up to 5% of tax liability, rising to 10% for large cash‑transaction firms. Taxpayers must verify the CA‑filed report on the e‑filing portal and correct any mismatches. Experts also warn against common slip‑ups in GST turnover reporting, TDS, AIS entries and unsubstantiated business expenses to avoid further scrutiny.

Deadline reminder
The tax audit must be filed by September 30. Missing the date can lead to a penalty of 5 % of tax payable, increasing to 10 % for entities with cash receipts/payments under 5 % of total turnover.

After your CA files
- Log in to the income‑tax e‑filing portal and review the uploaded report for accuracy.
- Address any discrepancies immediately to avoid notices.
- Details: CA submission guide.

Common pitfalls to avoid
- Incorrect GST turnover figures.
- Misreported TDS or AIS entries.
- Unjustified business expenses.
- See full list: 5 common mistakes.

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