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Taxation · Provisions for filing Return of Income and Self Assessment

Fee and Interest for Default in Filing Return

Updated 4 October 2026 · Fact-checked

Two charges apply. The fee is ₹5,000 or ₹10,000 (₹1,000 if total income is up to ₹5,00,000). Interest is 1% per month or part of a month on unpaid tax, from the day after the due date. Advance tax interest applies only if advance tax paid is below 90% of assessed tax, from 1 April after the tax year.

Understand Fee and Interest for Default in Filing Return

When you miss the due date for filing a return, the law charges you in two different ways. The first is a fee. It is a fixed penalty-like amount for filing late. It does not depend on how much tax you owe. The second is interest. It compensates the government for the tax it received late. It depends on the amount of unpaid tax and the number of months.

The fee for late filing applies when the return is furnished after the due date. It is ₹5,000 if you file on or before 31 December after the end of the tax year (31 December 2027 for tax year 2026-27). It is ₹10,000 if you file later than that. If your total income does not exceed ₹5,00,000, the fee is capped at ₹1,000. The fee is payable even if no tax is due.

Interest for default in furnishing the return is 1% per month or part of a month, simple interest. It is charged on the tax payable on total income after reducing TDS, TCS, advance tax paid, relief and tax credit allowed. Self-assessment tax paid before you file the return is also deducted from the base. The period starts the day after the due date. It ends on the date the return is furnished. If no return is filed, it ends on the date of completion of assessment. Any part of a month counts as a full month.

A separate interest applies for default in payment of advance tax. If advance tax paid is less than 90% of the assessed tax, interest runs at 1% per month or part of a month on the shortfall. It runs from 1 April after the tax year until the tax is paid or the return is filed. A further interest applies if any advance tax instalment is paid late or is short. This is interest for deferment of instalments. It is worked out instalment by instalment on the tax due on the returned income, so it has a different base from the 90% shortfall interest.

These charges can all apply together. A person who misses advance tax and files late can pay the late fee, interest for late return, interest for advance tax shortfall and interest for deferment of instalments. Your job in the exam is to compute each one separately and not mix their periods or bases.

Key rules to remember

Fee for late filing of return
₹5,000 if filed after the due date but on or before 31 December after the tax year; ₹10,000 if filed later; ₹1,000 if total income ≤ ₹5,00,000
A fixed fee. It applies even if no tax is payable. It is not interest.
Interest for default in furnishing return
1% × number of months or part months × (tax on total income − TDS/TCS − advance tax − relief and credits − self-assessment tax paid before filing)
Months run from the day after the due date to the date of filing. If no return is filed, the end date is the date of completion of assessment. Part of a month counts as a full month.
Interest for default in payment of advance tax
1% × number of months or part months × (assessed tax − TDS/TCS − advance tax paid), if advance tax paid < 90% of assessed tax
Months run from 1 April after the tax year to the date of payment or filing of return. Each payment of self-assessment tax reduces the shortfall from the month of payment.
Interest for deferment of advance tax instalments
1% per month on the shortfall of each instalment: 3 months for every instalment before the last, 1 month for the last instalment (15 March)
Companies: 15% by 15 June, 45% by 15 September, 75% by 15 December, 100% by 15 March. The first three instalments (15 June, 15 September, 15 December) are charged for 3 months each and the last (15 March) for 1 month. Non-corporate assessees: 30% by 15 September, 60% by 15 December, 100% by 15 March (the first two charged for 3 months, the last for 1 month). Presumptive business assessees pay the full amount by 15 March. The shortfall is measured against the cumulative percentage of the tax due on the returned income, after TDS/TCS. Self-assessment tax paid after 15 March does not reduce it. For companies, no interest is charged on the 15 June instalment if at least 12% of the tax due was paid by 15 June, or on the 15 September instalment if at least 36% was paid by 15 September. For the last instalment, any shortfall below 100% of the tax due attracts interest.
Due dates for filing return (common cases)
31 July: non-audit assessees; 31 October: assessees whose accounts are audited; 30 November: assessees who must furnish a transfer pricing report
Check which due date applies before counting months.

How to solve Fee and Interest for Default in Filing Return questions

Use this order for any question on fee and interest for default. Handle each charge separately and add them at the end.

  1. 1Identify the tax year and the assessee type. Note whether the person is a company, non-corporate, audit case or presumptive case.
  2. 2Find the due date for filing the return and compare it with the actual filing date. Decide whether the late fee and interest for late return apply.
  3. 3Compute the late fee. Use ₹5,000 or ₹10,000 by the filing date. Reduce it to ₹1,000 if total income is up to ₹5,00,000. Charge nil if the return is filed on time.
  4. 4Compute the base for interest for late return: tax on total income less TDS/TCS, advance tax, relief and credits. Round it to the nearest ₹10 if the question asks for rounding. Count months from the day after the due date to the filing date, counting part months as full. Multiply by 1%.
  5. 5Test the advance tax position. Compute assessed tax less TDS/TCS. If this is less than ₹10,000, no advance tax was required and no interest for advance tax applies. Otherwise check whether advance tax paid is at least 90% of it.
  6. 6If advance tax is short, compute interest for advance tax shortfall on the shortfall (assessed tax less TDS/TCS less advance tax) for months from 1 April after the tax year, stopping the shortfall when self-assessment tax is paid.
  7. 7Compute interest for deferment of instalments instalment by instalment on the shortfall against the required cumulative percentage. Check the 12% and 36% relief for companies. Self-assessment tax paid after 15 March does not reduce this charge.
  8. 8Add all amounts, showing each charge separately with its period and base, and state the total.

Quickest way: Four-line check: fee, late-return interest, advance tax shortfall, instalment interest

When to use it: Use this in MCQs and in the first minute of a written problem to decide which charges apply before you compute.

  1. Fee: filed on time means nil. Late with income up to ₹5,00,000 means ₹1,000. Otherwise ₹5,000 if filed by 31 December after the tax year, else ₹10,000.
  2. Late-return interest: months from the day after the due date to the filing date, with part months counted as full. Base is tax less TDS/TCS and advance tax paid. Then multiply by 1%.
  3. Advance tax: net tax under ₹10,000 means no advance tax interest. Otherwise advance tax paid below 90% means 1% per month from 1 April on the shortfall.
  4. MCQ elimination: reject options that apply 1% per year instead of per month. Reject options that charge interest on total income instead of on tax. Reject options where the fee changes with the amount of tax.
  5. Written format: show each charge as a separate line with base, period, rate and amount. State the rule in one line. Step marks go to the correct base and the correct month count.

Common mistakes in Fee and Interest for Default in Filing Return

  • Treating the late filing fee and the interest as the same thing, or charging only one of them.

    Both arise from filing late, so they feel like one charge.

    Fix: The fee is a fixed amount for the default. The interest depends on unpaid tax and months. Compute both and add them.

  • Charging interest on total income instead of on tax.

    The question gives a large income figure and students use it as the base.

    Fix: The base is always tax, reduced by TDS/TCS, advance tax paid, relief and credits. Total income is only used to decide the ₹1,000 fee cap.

  • Counting months wrongly, such as treating 5 days as zero months or counting days.

    Students are used to day-based or exact-period calculations.

    Fix: Any part of a month is a full month. Late-return interest starts the day after the due date. If the due date is 31 July and filing is on 5 August, that is 1 month.

  • Applying the ₹1,000 fee to anyone with small tax or applying ₹5,000 to someone with total income up to ₹5,00,000.

    Students forget that the ₹1,000 cap depends on total income, not on tax payable.

    Fix: Check total income first. If it is up to ₹5,00,000, the fee is ₹1,000 for any late filing.

  • Starting interest for advance tax shortfall from the due date of the return.

    It is mixed up with interest for late return, which starts after the due date.

    Fix: Advance tax interest starts on 1 April after the tax year. Late-return interest starts the day after the return due date.

  • Charging interest for advance tax even when net tax is below ₹10,000 or advance tax paid is at least 90%.

    Students skip the threshold test and compute directly.

    Fix: Always test the ₹10,000 threshold and the 90% condition first. Write the test in your answer.

Worked examples

Example 1

Mr. Arun, a resident individual with no business income, has total income of ₹14,00,000 for tax year 2026-27. Assume that tax on total income including cess is ₹93,600; this figure is given for this question, so do not recompute it from slabs. TDS deducted is ₹85,000. He files his return on 20 October 2027 and pays the balance tax on the same day. The due date is 31 July 2027. Compute the fee and interest for late filing.

Show the solution
  1. Late filing: the return is filed after 31 July 2027. So the fee and interest for late return apply.
  2. Fee: total income exceeds ₹5,00,000. The return is filed before 31 December 2027. So the fee is ₹5,000.
  3. Base for interest: ₹93,600 − ₹85,000 = ₹8,600.
  4. Period: 1 August 2027 to 20 October 2027 covers August, September and October, so 3 months.
  5. Interest for late return: ₹8,600 × 1% × 3 = ₹258.
  6. Advance tax: net tax ₹8,600 is less than ₹10,000, so advance tax was not required and no interest for advance tax shortfall applies.
  7. Total: ₹5,000 + ₹258 = ₹5,258.

Answer: Fee ₹5,000 and interest for late return ₹258. Total ₹5,258. No interest for advance tax applies.

Example 2

Ms. Rekha, a resident non-corporate assessee with business income (not presumptive), has tax on total income of ₹2,00,000 for tax year 2026-27. TDS is ₹40,000. She paid advance tax of ₹1,00,000 on 15 March 2027 only. She paid self-assessment tax of ₹60,000 on 20 July 2027 and filed the return on the same day, before the due date. Compute the interest for default in advance tax and for deferment of instalments.

Show the solution
  1. Late return: the return is filed on time, so there is no late fee and no interest for late return.
  2. Net tax (assessed tax less TDS): ₹2,00,000 − ₹40,000 = ₹1,60,000. This exceeds ₹10,000, so advance tax was required.
  3. 90% test: 90% of ₹1,60,000 = ₹1,44,000. Advance tax paid is ₹1,00,000, which is less, so interest for advance tax shortfall applies. The ₹1,00,000 was paid on 15 March 2027, before 31 March, so it counts as advance tax.
  4. Shortfall for the 90% charge: ₹1,60,000 − ₹1,00,000 = ₹60,000. This interest runs from 1 April 2027 until the shortfall is cleared by the self-assessment tax of ₹60,000 paid on 20 July 2027.
  5. Period: 1 April 2027 to 20 July 2027 is April, May, June and July, so 4 months.
  6. Interest for shortfall: ₹60,000 × 1% × 4 = ₹2,400.
  7. Deferment interest is a separate charge on a separate base. It is measured against the cumulative percentage of the ₹1,60,000 due on each instalment date. The self-assessment tax paid on 20 July does not reduce it, because it was paid after 15 March.
  8. Instalment 1 (15 September, 30%): required ₹48,000, paid ₹0. Shortfall ₹48,000 × 1% × 3 = ₹1,440.
  9. Instalment 2 (15 December, 60%): required ₹96,000, paid ₹0. Shortfall ₹96,000 × 1% × 3 = ₹2,880.
  10. Instalment 3 (15 March, 100%): required ₹1,60,000, paid ₹1,00,000. Shortfall ₹60,000 × 1% × 1 = ₹600.
  11. Total for instalments: ₹1,440 + ₹2,880 + ₹600 = ₹4,920.
  12. Total interest: ₹2,400 + ₹4,920 = ₹7,320.

Answer: Interest for advance tax shortfall ₹2,400 (on the ₹60,000 shortfall, from 1 April 2027 to 20 July 2027, 4 months) and interest for deferment of instalments ₹4,920 (instalment-wise shortfalls of ₹48,000, ₹96,000 and ₹60,000). Total interest ₹7,320. No late fee applies.

Exam tips

  • Read the filing date and the due date first. If the return is on time, say so in one line and move to advance tax interest.
  • Always show the base for interest as tax less TDS/TCS and advance tax. Examiners give marks for the correct base even if the arithmetic slips.
  • Check total income against ₹5,00,000 before writing the fee. This is a common trap in MCQs.
  • Write the ₹10,000 threshold and the 90% test as separate lines in your answer. These are easy step marks.
  • In MCQs, the wrong options usually use the wrong start date or treat the rate as yearly. Check the period and the rate before computing.

Practice questions from Provisions for filing Return of Income and Self Assessment

Fee and Interest for Default in Filing Return in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Fee and Interest for Default in Filing Return: frequently asked questions

What is the difference between the fee and the interest for late filing of return?

The fee is a fixed amount of ₹5,000, ₹10,000 or ₹1,000 for filing after the due date. Interest is 1% per month or part of a month on the unpaid tax. You may pay both together, and the fee is payable even if no tax is due.

When does interest for default in furnishing return start?

It starts the day after the due date of filing the return. It ends on the date the return is furnished. If no return is filed, it ends on the date of completion of assessment. Part of a month counts as a full month.

Is interest for advance tax shortfall the same as interest for late return?

No. Interest for advance tax runs from 1 April after the tax year and applies when advance tax paid is below 90% of assessed tax. Interest for late return runs from the day after the return due date. Both can apply to the same person.

Is the ₹1,000 fee based on tax payable or total income?

It is based on total income. If total income does not exceed ₹5,00,000, the late filing fee is ₹1,000, whatever the tax payable. Above that, the fee is ₹5,000 or ₹10,000 depending on the filing date.