Advance Tax Computation: Due Dates, Calculations & Penalties for Indian Professionals

Who Must Pay Advance Tax — Section 207 & 208

Advance tax is essentially paying your income tax liability in installments during the financial year itself, rather than a lump sum at year-end. The legal mandate comes from Section 208 of the Income Tax Act, 1961, which states that advance tax is payable when the estimated tax liability for the year is ₹10,000 or more after deducting TDS.

Section 207 provides the exemption: resident individuals aged 60 years or above (senior citizens) who do not have income from business or profession are fully exempt from paying advance tax. For all others — salaried employees with sizeable non-salary income, freelancers, consultants, business owners, traders in equity/F&O — advance tax is mandatory.

Who is covered under advance tax?

• Salaried professionals with rental income, capital gains from stocks/mutual funds, or freelance earnings in excess of TDS threshold
• Self-employed professionals — doctors, lawyers, architects, chartered accountants, consultants
• Business owners — proprietors, partners in firms, directors of private companies
• F&O traders — futures and options trading income is treated as business income; advance tax applies even if the trader is otherwise salaried
• Equity investors — those with capital gains on shares, equity mutual funds, or real estate sale where TDS was not deducted
• NRIs — if income arising in India after TDS exceeds ₹10,000

Advance Tax Due Dates, Installment Percentages & Challan

The Income Tax Act specifies four installment dates with minimum cumulative percentages. For companies and other taxpayers (non-presumptive), these are:

Special Rule for Presumptive Taxation (Section 44AD/44ADA/44AE)

Taxpayers who opt for the presumptive taxation scheme — small businesses under Section 44AD (turnover up to ₹3 crore) and professionals under Section 44ADA (gross receipts up to ₹75 lakh) — are required to pay the entire advance tax in one installment on or before 15 March. There is no requirement to pay in June, September, or December installments for them.

Challan for Payment

Advance tax is paid using Challan ITNS 280 (for income tax other than companies) or Challan ITNS 280 with Type of Payment code 100 for advance tax. Payment can be made online via the Income Tax e-filing portal (www.incometax.gov.in) through net banking, UPI, RTGS/NEFT, or at authorized bank branches. Retain the Challan Identification Number (CIN) for records.

Step-by-Step Advance Tax Computation — Section 209

Section 209 lays out the methodology for computing advance tax. The process involves estimating your total income for the year and applying the applicable slab rates.

Computation Methodology

1. Estimate Total Income: Aggregate income from all heads — salary, house property, business/profession, capital gains, and other sources
2. Apply Deductions: Subtract Chapter VI-A deductions (80C, 80D, 80CCD, etc.) to arrive at net taxable income
3. Compute Tax on Net Income: Apply current year's slab rates or special rates for capital gains (15%/20%/10% LTCG)
4. Add Surcharge & Cess: Add applicable surcharge (10%/15%/25%/37% for super-rich) and 4% health & education cess
5. Deduct TDS & MAT Credit: Subtract TDS already deducted or expected to be deducted, and any MAT credit
6. Advance Tax = Balance Due: If this balance exceeds ₹10,000, it must be paid as advance tax in installments

Practical Computation Example

Consider Mr. Pradeep Sharma, a salaried CA working at a Big 4 firm in Bengaluru, who also earns from stock trading:

Tax Computation (Old Regime, FY 2024-25):

• Tax on normal income (₹17,70,000 after excluding LTCG ₹1,50,000): approx ₹4,02,500
• Tax on STCG ₹2,00,000 @ 15% = ₹30,000
• Tax on LTCG above ₹1L (₹50,000 @ 10%) = ₹5,000
• Total Tax = ₹4,37,500 | Surcharge: Nil (below ₹50L) | Cess 4% = ₹17,500
• Total Tax + Cess = ₹4,55,000
• Less: TDS by Employer (estimated) = ₹3,80,000
• Advance Tax Payable = ₹75,000

Installment Schedule: 15 June: ₹11,250 | 15 September: ₹22,500 | 15 December: ₹22,500 | 15 March: ₹18,750

Interest Penalties — Section 234B and 234C

Two separate interest provisions deal with advance tax defaults. Many taxpayers confuse the two — they are distinct and can both apply simultaneously.

Section 234B — Default in Payment of Advance Tax

Section 234B applies when advance tax paid is less than 90% of the assessed tax for the year. Interest is charged at 1% per month (simple interest) from 1 April of the assessment year until the date of actual payment (self-assessment tax) or date of regular assessment.

Example: If total tax liability is ₹1,00,000 and advance tax paid = ₹70,000 (less than 90% = ₹90,000), then 234B interest = 1% × ₹30,000 × number of months delayed.

Section 234C — Deferment of Advance Tax Installments

Section 234C applies when each individual installment falls short of the required cumulative percentage. Interest is at 1% per month for 3 months on the shortfall (except for the last March installment where it is 1% for 1 month).

Section 234A — Late Filing of Return

While not strictly an advance tax provision, Section 234A charges interest at 1% per month on the unpaid tax for delay in filing ITR beyond the due date. This is in addition to 234B/234C interest and compounds the penalty burden for non-compliant taxpayers.

No 234C Interest Exception

No interest under 234C is charged if the shortfall is due to income from capital gains, casual income (lottery winnings), or business income earned after the installment due date — provided the taxpayer pays the entire shortfall in the immediately following installment or remaining installments.

Self-Assessment Tax vs Advance Tax — Key Differences

After the financial year ends and you file your ITR, any remaining balance (tax liability minus TDS minus advance tax) must be paid as self-assessment tax before filing the return. This is paid under Challan 280 with Type of Payment code 300.

Refund of Advance Tax

If advance tax paid exceeds the final tax liability (after considering TDS, reliefs), the excess is refunded by the Income Tax Department with interest at 6% per annum under Section 244A. The refund is typically processed after the ITR is e-verified and assessed. Ensure bank account is pre-validated on the e-filing portal to receive refunds digitally.

Advance Tax for F&O Traders — Special Considerations

Futures & Options trading income is classified as non-speculative business income, making it subject to normal advance tax installments. Many salaried F&O traders miss this, assuming their employer's TDS covers everything. Since F&O income is volatile, a practical approach is to compute advance tax conservatively at each quarter based on realized P&L up to that date. The Income Tax Act permits a "best estimate" basis for advance tax computation, protecting taxpayers from 234C interest if the estimate was made in good faith.