Advance Tax on Mid-Year Gains: Payment Dates, Interest Relief and the New Act

You sell an investment in October. Salary TDS has been handled all year, but this gain was never in payroll's estimate. Waiting until the return is filed can create an avoidable interest bill.

Use P.A.Y.S.: identify the Period, Assess the income, calculate what is Yet due, then Settle on the correct schedule.

P: Identify the law and income period

FY 2025–26 remains within the old Act, including familiar sections 234B and 234C. For Tax Year 2026–27, the Income-tax Act 2025 applies. Section 425 addresses deferment of advance-tax instalments under the new framework; the department's payment FAQs explain the transition.

Do not label every 2026 payment as a section 234C case without checking the period.

A: Assess the full liability

Advance tax generally applies where estimated net liability is ₹10,000 or more after relevant credits—not only when it exceeds ₹10,000. Consider all income, available relief and TDS/TCS together.

There are exceptions. A resident individual aged 60 or more with no business or professional income has an important advance-tax exemption. An ordinary pensioner and a senior citizen running a business should not be treated as identical cases.

For the gain itself, establish the asset, holding period, purchase and sale dates, costs and available exemptions. A debt mutual fund, foreign share, house and VDA do not share one universal rate.

Y: Calculate what is yet due

The ordinary cumulative schedule is 15% by 15 June, 45% by 15 September, 75% by 15 December and 100% by 15 March. Qualifying presumptive cases have their separate prescribed March payment rule.

The law provides conditional relief for earlier shortfalls caused by specified income, including capital gains, that was underestimated or not estimated. The related tax must be paid through the remaining due instalments, or by 31 March where no instalment remains. This is not a general permission to postpone tax on predictable salary, interest or business income until March.

Do not assume every crypto receipt qualifies. VDA activity can raise capital-versus-business and other classification issues, and the relevant statutory exception must actually cover the income. The earlier blanket promise of crypto relief was too broad.

S: Settle and keep the calculation

After a gain, recalculate the annual estimate and applicable remaining payments rather than sending an arbitrary round amount. Retain the gain computation, tax-credit working and payment acknowledgements.

A gain arising after 15 March needs prompt attention to the year-end payment and relief conditions. Paying by 31 March is treated as advance tax, but that does not automatically erase unrelated earlier instalment defaults.

Default interest and instalment-deferment interest address different failures. Having paid some tax, or having employer TDS, does not prove both tests are satisfied. Use the correct-year official utility or a professional calculation when exemptions, losses or cross-border credits complicate the result.

The practical habit is simple: review tax when a material income event occurs, not only when the filing reminder arrives.