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Tax Interest Calculator

Tax Interest Calculator

Calculate interest under Sections 234A, 234B, and 234C for delay in tax filing, default in advance tax payment, and deferment of advance tax installments.

Enter Tax Details

Fill in the fields below to calculate interest on tax defaults

Tax Liability Details

₹
Total income tax + cess payable for the financial year
₹
TDS deducted from salary, interest, etc.

Section 234A — Delay in Filing Return

Number of months delay from the due date (31st July / 31st October)

Section 234B — Default in Advance Tax

₹
Total advance tax paid during the financial year
Month when the shortfall was paid (approx)

Section 234C — Deferment of Advance Tax

₹
₹
₹
₹

Your Interest Calculation Results

Enter your tax details and click "Calculate Interest" to see the interest break-up under Sections 234A, 234B, and 234C.

Section 234A — Late filing interest Section 234B — Default interest Section 234C — Deferment interest Total interest payable

Interest Rates (FY 2025-26)

  • Section 234A1% per month (or part)
  • Section 234B1% per month (or part)
  • Section 234C1% per month (or part)

Interest is calculated on the outstanding tax amount

Important Points

  • 234ADelay in filing ITR
  • 234BShortfall in advance tax
  • 234CDeferment of installments
  • Due DatesJune 15, Sep 15, Dec 15, Mar 15

Interest is calculated from the due date till the date of payment