Free TDS Interest Calculator

Understanding TDS Interest Calculation

The TDS Interest Calculator is an online financial tool designed to estimate interest liabilities under three common scenarios: late deduction of tax at source, late payment of deducted tax, and late filing of the TDS return. By applying the prescribed rates from Section 201A for deductions and payments, and Section 234E for return filing, this calculator helps taxpayers compute amounts owed quickly. Whether you need a TDS late payment interest calculator, a TDS late deduction interest tool, or an interest on late filing of TDS return estimator, all three functions are included in a single interface.

How the Calculator Works

The tool offers three calculation modes that you select based on your specific default:

• Late Deduction of TDS: Provide the TDS amount, the transaction date (when tax should have been deducted), and the actual deduction date. The interest is computed at 1% per month (or part of a month) from the due deduction date to the actual deduction date.
• Late Payment of TDS: Enter the TDS amount, the date of deduction (when tax was actually deducted), and the date of payment. The system applies a 1.5% per month rate for each complete or partial month between the deduction and payment.
• Late Filing of TDS Return: Input the TDS amount, select the applicable quarter and year, and specify the actual filing date. The calculator determines the number of days beyond the due date and applies a flat fee of Rs 200 per day (subject to a cap equal to the TDS amount).

All fields are simple numeric or date entries, making the tool accessible even for users unfamiliar with TDS compliance procedures.

TDS Deadlines at a Glance

The timing of TDS deduction, payment, and return filing follows a strict schedule. The table below summarises the key dates based on the month of deduction:

Deduction Month	Quarter Ended	Payment Due Date	Return Filing Due Date
April	30 June	7 May	31 July
May		7 June
June		7 July
July	30 September	7 August	31 October
August		7 September
September		7 October
October	31 December	7 November	31 January (next year)
November		7 December
December		7 January
January	31 March	7 February	31 May
February		7 March
March		7 April (govt. deductors) / 30 April (others)

Note: TDS must be deducted on the same day as the transaction. The payment due date is the 7th of the month following the deduction month (except for March, where special deadlines apply). Returns are due by the 31st of the month following the end of the respective quarter.

Worked Examples

To illustrate the TDS interest calculation formula in practice, consider the following cases:

1. Interest on Late Deduction of TDS

Assume a TDS amount of Rs 10,000 was required to be deducted on a transaction date of 15 April 2025, but the actual deduction took place on 2 May 2025. The delay spans two months (April and May, each considered as a full month). Applying the 1% rate:

$$\text{Late Deduction Interest} = 10{,}000 \times 0.01 \times 2 = 200\ \text{Rs}$$

2. Interest on Late Payment of TDS

Suppose the TDS of Rs 10,000 was deducted in April (due for payment by 7 May 2025), but the depositor made the payment on 12 May 2025. The delay covers two months: May and the deduction month (April). The 1.5% rate yields:

$$\text{Late Payment Interest} = 10{,}000 \times 0.015 \times 2 = 300\ \text{Rs}$$

3. Late Filing Fee under Section 234E

Consider a TDS return that was due for filing on 31 January 2026 (Q3). The taxpayer filed it on 15 March 2026, resulting in 43 days of delay. The daily fee is Rs 200, but the total penalty cannot exceed the TDS amount of Rs 10,000.

$$\text{Late Filing Fee} = 43 \times 200 = 8{,}600\ \text{Rs}$$

Since Rs 8,600 is lower than the TDS amount of Rs 10,000, the entire calculated fee is applicable.

Important Disclaimer

This TDS interest calculator provides estimates based on the prevailing rules and the information you supply. It is intended for educational and planning purposes only and should not replace professional tax advice or official computations by tax authorities. Always verify your liabilities with a qualified accountant or the Income Tax Department.