TDS Interest Calculator

TDS interest calculations depend on the nature of the default—whether it is a delay in deduction, a delay in depositing the tax to the government, or a delay in filing the quarterly return. The standard statutory formula computes interest based on a monthly percentage rate applied to the tax amount. For late deduction, the formula is generally: Interest = Tax Amount × 1% × Number of Months (or part thereof). For late payment after deduction, the statutory rate increases to: Interest = Tax Amount × 1.5% × Number of Months (or part thereof). Note that any fraction of a month is counted as a full month under standard tax computation rules.

Consider a scenario where a business deducts ₹ 10,000 as TDS on October 12th, but delays depositing this amount to the government until December 12th. First, we identify the tax amount as ₹ 10,000 and the late payment penalty rate of 1.5% per month. Next, we count the duration of the delay: from October 12th to December 12th spans exactly 2 months. Applying the formula: Interest = 10,000 × 1.5% × 2 = ₹ 300. Therefore, the total interest payable for this delayed deposit is ₹ 300.

To minimize costly penalties, always deposit deducted tax on or before the statutory due date, which is typically the 7th of the month following the month of deduction. Keep track of calendar months carefully, as even a one-day delay past a month boundary triggers a full month's interest charge. Finally, reconcile your books quarterly to catch any missing deductions before filing returns.