The Real Cost of Filing Late in India (AY 2026-27)

Missing a tax deadline is rarely a flat fine — it compounds. This report computes exactly what late filing costs across income tax, GST and TDS, using the statutory formulas (§234F, §234A, §47, §50, §201(1A) and §234E). Every figure below is calculated with the same engine that powers our free calculators, so you can reproduce it yourself. Free to cite with attribution.

The three tables below aren't hypothetical ranges — each row is computed programmatically from the exact scenario stated (income, tax due, days or months late) using the same formulas that power our free calculators, so you can plug in your own numbers and reproduce the exact figure. The goal is to make an abstract statute section like "§234A" concrete: not "1% per month" in the abstract, but the actual rupee amount for a return that's three months late.

1. GST late-filing fee & interest, per return

GSTR-3B/GSTR-1 late fees run at ₹50/day (₹25 CGST + ₹25 SGST) for a return with tax due, capped at ₹5,000, or ₹20/day capped at ₹500 for a nil return. On top of the fee, unpaid tax attracts 18% p.a. interest under Section 50. The interest column below assumes a ₹50,000 net cash liability.

Takeaway: the late fee caps quickly (₹500 nil / ₹5,000 regular), so beyond ~25–100 days the interest — not the fee — is what keeps growing. File the return even if you can't pay in full to stop the fee clock.

2. Income-tax return: §234F fee + §234A interest

A belated ITR costs a flat §234F fee — ₹1,000 if total income is up to ₹5 lakh, otherwise ₹5,000 (nil below the basic exemption) — plus §234A interest at 1% per month (or part) on any unpaid tax. Here is the combined cost for four common situations:

Takeaway: for incomes above ₹5 lakh the ₹5,000 fee dominates at first, but §234A interest overtakes it the longer the tax stays unpaid — and belated returns also lose the right to carry forward most losses.

3. TDS: late deposit (§201(1A)) + late return (§234E)

For deductors, TDS deposited late attracts 1.5% per month under Section 201(1A), and a late TDS return costs ₹200/day under Section 234E — capped at the TDS amount itself. The combined bite:

Takeaway: §234E at ₹200/day reaches the cap fast, so a small TDS amount filed months late can effectively double. Deposit and file TDS on time — the interest and fee are non-negotiable and non-waivable in most cases.

Beyond the fee: advance tax shortfall and TCS

The tables above cover the most common triggers, but two related charges catch people who assume "I filed on time" is the whole story. Under Section 234B, anyone whose advance tax paid is less than 90% of the final tax liability owes 1% per month interest from April of the assessment year until the return is filed — this applies even to someone who files well before 31 July, if they simply never paid advance tax during the year. Section 234C adds a separate quarterly-shortfall interest for missing the 15%/45%/75%/100% cumulative advance-tax instalment schedule, calculated instalment by instalment rather than on the year-end total, so under-paying early in the year costs more than under-paying the same amount in the last quarter.

For businesses that collect tax at source (TCS) — on the sale of goods above certain thresholds, or on foreign remittances under the Liberalised Remittance Scheme — late deposit attracts the same 1% (or in some cases 1.5%) monthly interest structure as TDS, and a late TCS return draws its own per-day fee under Section 206C read with 234E-equivalent provisions. These are easy to overlook because they sit outside the core ITR/GST/TDS trio most people track, yet the interest clock runs identically.

Frequently asked

Does the GST late fee apply even if I have no sales that month?
Yes. A nil GSTR-3B still attracts a late fee (capped lower, at ₹500, than a regular return's ₹5,000 cap) — "nothing to pay" is not the same as "nothing to file."

If I can't pay my full tax by 31 July, should I still file the ITR?
Yes, always. The §234F late fee and the loss of carry-forward rights are triggered by a missing return, not a missing payment. Filing on time and paying later (with §234A/234B interest running only on the unpaid amount) is strictly cheaper than filing late.

Can the GST or income-tax late fee be waived?
Waivers are occasionally announced for specific relief schemes or amnesty windows, but there is no standing, automatic waiver — absent a specific notification, the fee and interest are levied by the system without discretion.

Does paying the tax late but filing on time still cost interest?
Yes — the late-fee sections (234F, GST Section 47, 234E) are about the return being late; interest sections (234A, 234B, 234C, Section 50, 201(1A)) are about the payment being late. The two run independently and can both apply at once.

Why the gap between "small" and "large" penalties is misleading

The tables show late fees capping out at a few thousand rupees, which can make late filing look cheap in isolation — but that framing misses two larger costs. First, a belated income-tax return loses the right to carry forward most capital losses and business losses to offset future years' income, which for an active trader or a business with a loss-making year can be worth far more than the fee itself. Second, for companies, repeated late MCA filings compound into director disqualification risk under Section 164(2) after three consecutive years of default — a career-level consequence that dwarfs any per-day fee. The rupee figures above are the visible, immediate cost; the invisible cost of lost loss carry-forwards and disqualification risk is often larger and rarely shows up until it's too late to fix.

How to avoid every rupee above

None of these penalties are discretionary — they are formula-driven and levied automatically, which is exactly why they are avoidable with a calendar. Three habits eliminate almost all late-filing cost: (1) set reminders for the four dates that matter to you (GST monthly, TDS quarterly, advance tax quarterly, ITR by 31 July); (2) file the return on time even if you cannot pay the full tax immediately, because the late fee is triggered by the missing return, not the missing payment; and (3) reconcile before you file — most GST interest comes from ITC that was claimed but later reversed, and most ITR notices come from income in your AIS that wasn't reported.

Methodology

Every figure is computed programmatically from the statutory formulas as codified in our open calculator library — §234F and §234A for income tax, Section 47 (late fee) and Section 50 (18% interest) for GST, and Sections 201(1A) and 234E for TDS — for AY 2026-27. The tables are generated at build time from the same functions that power the site's free calculators, so the published numbers and the interactive tools are always identical. Figures are indicative of the statutory charge only; a specific case may attract additional penalty (e.g. §271H) or relief — verify with a qualified CA.

This "computed from the same engine as the calculator" approach is deliberate: a static article can quietly drift out of sync with the actual rule once a slab or rate changes, but a number generated from the same function the interactive tool calls cannot drift, because there is only one source of truth. If a statutory rate changes in a future Finance Act, updating the underlying calculator function updates both this report and the live calculator at the same time.

Calculate your own penalty → See this month's due dates →

Cite this report: "The Real Cost of Filing Late in India (AY 2026-27)", India Law Simplified, 2026-08-16. https://onefiling.in/reports/cost-of-filing-late-india-2026.html

📊 State of Indian Taxes 2026  ·  🧮 Free calculators  ·  ❓ Common questions

General information for AY 2026-27, not professional advice. Verify all figures against the official source before acting.