TDS & TCS Compliance Errors: 5 Critical Mistakes Businesses Must Fix in 2025-26

If your business deducts or collects tax at source, even a single compliance slip can trigger penalties, interest, and costly expense disallowances. India’s TDS and TCS framework has become significantly stricter in 2025-26 – with the Income Tax Act, 2025 introducing tighter timelines, new section numbers, and harsher penalties for defaults. This article covers the five most common TDS/TCS compliance errors, the exact provisions that apply, and practical fixes to protect your business from avoidable liability.

Quick Reference: Key Penalties at a Glance

1. TDS Default – Short or Non-Deduction (Section 194 Series)

This is the most financially damaging error a business can make. If you pay a vendor, contractor, or professional without deducting TDS or deduct at the wrong rate – the Income Tax Department can treat you as an ‘assessee in default.’ This means you become personally liable for the tax that should have been deducted, plus interest.

Under Section 35(b) of the Income Tax Act, 2025 (previously Section 40(a)(ia)), 30% of the payment amount gets disallowed as a business expense if TDS was not deducted or not deposited by the return filing due date. For a ₹5 lakh professional fee payment, that’s ₹1.5 lakh added back to your taxable income.

How to Fix It

1. Validate the applicable TDS section before every payment – rates vary widely across sections.
2. Maintain an updated rate-and-threshold master for all vendor categories.
3. Deposit TDS by the 7th of the following month (March payments: by 30th April).
4. Use accounting software that auto-applies section codes based on vendor type and transaction value.

2. TDS Return Filing Errors – 24Q, 26Q, 27Q (Section 200(3))

Filing the wrong form, mismatching PANs, or incorrectly mapping challans to deductees are among the most common return errors. A PAN mismatch alone can deny your payee the TDS credit in their Form 26AS – leading to escalations, reassessment demands, and strained business relationships.

From April 1, 2025, the Finance Act (No. 2), 2024 introduced a strict 6 year correction window. Under the Income Tax Act, 2025, this window is further reduced to just 2 years from the end of the financial year in which the original statement was due. Once the window closes, corrections are permanently barred.

How to Fix It

1. Pre-validate all PANs on the TRACES portal before filing.
2. Reconcile challans against OLTAS (Online Tax Accounting System) before mapping them to deductees.
3. Use the latest File Validation Utility (FVU) to catch errors before submission.
4. File correction statements promptly via TRACES – do not assume errors can be fixed ‘later.’

3. Late Filing of TDS Returns (Section 234E + Section 271H)

Late filing is one of the most preventable – and most common – TDS defaults. Under Section 234E, a fee of ₹200 per day applies from the due date until the return is filed, capped at the total TDS amount. On top of this, Section 271H gives the Assessing Officer discretion to levy an additional penalty between ₹10,000 and ₹1,00,000 for incorrect or non-filed statements.

How to Fix It

1. Set internal filing deadlines 5 days before the statutory due date.
2. Follow a quarterly compliance calendar with ownership assigned to a specific team member.
3. Run FVU validation at least a week before the due date to allow time for corrections.

4. Non-Issuance of TDS Certificates – Form 16 / 16A (Section 272A(2)(g))

Failing to issue TDS certificates on time is not just a compliance lapse – it carries a penalty of ₹500 per day under Section 272A(2)(g). Beyond the financial cost, it creates friction with employees and vendors who need Form 16 or Form 16A to file their own income tax returns.

1. Form 16 (salary TDS): Issue by 15th June after the close of the financial year.
2. Form 16A (non-salary TDS): Issue within 15 days from the due date of the relevant TDS return.

How to Fix It

1. Generate TDS certificates via the TRACES portal immediately after return filing.
2. Automate certificate generation and distribution using your payroll or accounting software.
3. Monitor the TRACES portal regularly to ensure certificates are available for download.

Key Takeaways for Every Finance Team

• First-time accuracy matters more than ever – the correction window is now just 2 years under the Income Tax Act, 2025.
• PAN validation before every payment and filing is non-negotiable. An invalid PAN triggers 20% TDS under Section 206AA.
• Build a compliance calendar with internal deadlines set 5 days ahead of statutory due dates.
• Automate wherever possible – rate masters, threshold alerts, certificate generation, and challan reconciliation.
• Do not treat TDS/TCS corrections as a fallback strategy. The cost of corrections – in penalties, interest, and time – far exceeds the cost of getting it right the first time.

Conclusion

TDS and TCS compliance is no longer just a back-office task – it sits at the heart of your business’s tax health and financial credibility. The five errors covered in this article – wrong deductions, filing mistakes, late returns, and missing certificates – are entirely preventable with the right systems and timelines in place. With the Income Tax Act, 2025 significantly narrowing the window for corrections and increasing penalties for defaults, the cost of non-compliance has never been higher. Build your compliance processes around accuracy from day one, and your business will avoid penalties, protect cash flow, and stay on the right side of the Income Tax Department.

You can call or whatsapp at +91 9769647582 for any TDS queries or TDS filing service.

Frequently Asked Questions

What is the penalty for non-deduction of TDS?

Under Section 271C, the penalty equals the amount of TDS that should have been deducted. Additionally, 30% of the payment may be disallowed as a business expense under Section 35(b) of the Income Tax Act, 2025.

Can I file a TDS return correction after 2 years?

No. Under the Income Tax Act, 2025, corrections must be filed within two years from the end of the financial year in which the original TDS/TCS statement was due. After this period, corrections are permanently time-barred.

What happens if TDS is deducted but not deposited?

This is a serious default. You will be charged interest at 1.5% per month from the date of deduction to the date of actual deposit. In persistent cases, prosecution proceedings under Section 276B may also be initiated.