Advance Tax Planning for FY 2025-26: Key Dates and Strategies

02The Section 211 Instalment Schedule

For FY 2025-26 the instalment schedule under Section 211 of the Income-tax Act, 1961 is as follows. The same cadence carries into TY 2026-27 under the ITA 2025 framework.

Presumptive taxpayers — a single payment

Taxpayers opting for presumptive taxation under Section 44AD (business) or Section 44ADA (specified professions) are permitted to pay the entire advance tax liability in a single instalment on or before 15 March. This is a cash-flow relief intended for small businesses and professionals with irregular receipts. However, if the amount paid by 15 March is less than 100% of the assessed tax, Section 234C still applies for the shortfall — so the simplification is in the schedule, not in the interest exposure.

03Section 234B: Interest on Overall Shortfall

Section 234B applies when the total advance tax paid through the year is less than 90% of the assessed tax. The interest is a pure overall-shortfall metric — it does not care which instalment the shortfall happened in.

How it is computed

04Section 234C: Instalment-Level Interest

Section 234C is instalment-by-instalment. The interest is charged for the deferment period — typically three months — at 1% per month simple, on the shortfall against each instalment's prescribed cumulative threshold.

Instalment-level thresholds and interest

The safe harbour

For the first and second instalments, the proviso to Section 234C provides a safe harbour: if at least 12% is paid by 15 June and 36% by 15 September, no interest is charged for those instalments even if the 15%/45% thresholds are not fully met. Use this when Q1 or Q2 estimates carry genuine uncertainty.

Carve-outs in Section 234C

Section 234C exempts shortfalls arising out of income that could not have reasonably been anticipated — specifically, capital gains, winnings from lotteries/races, and income under Section 115BBDA on dividends. The exemption is available only if the tax on such income is paid in the immediately following instalment (or by 31 March if no further instalment is due).

05Estimation Discipline: The Hard Part

The statutory arithmetic is simple; the operational discipline is the hard part. Four practical rules for sharper estimation:

Rule 1 — Base the Q1 estimate on the prior-year run-rate

By 15 June, your current-year numbers are only two months old. Use the prior FY's total tax as the anchor, adjusted for known business changes (rate-regime switch, major contract wins or losses, expected capital gains). A reasonable anchor at Q1 is worth more than a perfect Q4.

Rule 2 — Use the safe harbours for Q1 and Q2

Paying 12% by 15 June and 36% by 15 September costs less interest exposure than paying 15% / 45% only to find the estimate was too high and cash is trapped. The safe harbour is a legitimate planning tool, not a workaround.

Rule 3 — Revise after half-year actuals

By the second week of October, you have audited half-year numbers. Use them to revise the full-year estimate and pay accordingly for the 15 December instalment. Most material errors (under-estimation or over-estimation) can be corrected at this point without triggering Section 234B.

Rule 4 — Build a Q4 cushion

For the 15 March instalment, err slightly on the higher side. Advance tax paid in excess is refunded (with interest under Section 244A, if applicable) at the time of return processing. The cost of over-paying by 2–3% is trivial; the cost of falling below 90% is the full 234B interest.

06Special Situations to Watch

Senior citizens with rental or interest income only

A resident individual aged 60 or more at any time during the previous year is exempt from advance tax only if they have no income chargeable under the head 'Profits and gains of business or profession'. A 62-year-old with a rental and interest portfolio is exempt; a 62-year-old consultant is not.

Capital gains from year-end transactions

A listed-equity sale on 20 March triggering LTCG at 12.5% (after the ₹1.25 lakh exemption under ITA 2025 / Section 112A) cannot be anticipated for earlier instalments. Pay the tax in the 15 March instalment (or by 31 March if the gain is after 15 March) — the 234C carve-out applies if the timing is documented.

Shift between regimes (old vs new / 115BAA opt-in)

Companies switching into Section 115BAA mid-year, or individuals moving between old and new regimes, should compute advance tax based on the final regime they intend to adopt for the year. A mid-year regime change usually requires recomputing the first two instalments if the tax rate changes materially.

Businesses with seasonal cash flow

Businesses with sharply seasonal receipts (school-year-linked, festive-cycle, monsoon-linked) can face cash strain at the statutory instalment dates. The Section 211 cadence is fixed, but the Section 234C safe harbour and the instalment-wise interest (rather than cumulative shortfall interest) mean small timing slips are survivable — just not ideal.

07Advance Tax Workflow Checklist

Annual set-up (April)

Before each instalment

Year-end reconciliation