Advance tax is exactly what the name says — tax paid in advance, before the end of the financial year, in installments. The government cannot wait until March 31 for every taxpayer to compute and pay their annual tax. It needs a steady cash flow throughout the year to fund public expenditure.

The principle is simple: “Pay as you earn.” As income flows in during the year, tax should flow to the government proportionately — not in a lump sum at year-end.

For salaried employees, this works automatically through TDS deducted by the employer every month. But for business owners, freelancers, professionals, and investors with capital gains — TDS either doesn’t apply or doesn’t cover the full liability. Advance tax fills this gap.

Advance tax is applicable to every taxpayer — individual, HUF, firm, company, or any other assessee — whose estimated tax liability for the year exceeds ₹10,000 after accounting for TDS credits.

Specifically, advance tax is critical for:

• Business owners and self-employed professionals — CA, doctors, consultants, architects in Delhi and across India
• Freelancers — especially those working with foreign clients where TDS is not deducted
• Investors — significant capital gains from shares, mutual funds, or property sales
• Rental income earners — where TDS may not be deducted (below threshold)
• Retired individuals — with FD interest, dividend income, or capital gains above the threshold

Who is Exempt from Advance Tax?

Presumptive Scheme Taxpayers — Single Installment

If you’ve opted for presumptive taxation under Section 44AD or 44ADA, you don’t follow the four-installment schedule. You must pay 100% of your advance tax liability in a single installment by March 15, 2027. Missing this single deadline triggers interest under Section 234B.

• 1Estimate Total Income for the Year
  Add all expected income — salary, business profit, rental income, capital gains (if any), interest income, dividends. Use best estimates — advance tax is based on “estimated” income, not actual.
• 2Deduct Applicable Deductions
  Subtract Chapter VI-A deductions (80C, 80D, 80CCD etc.) from gross total income to arrive at net taxable income.
• 3Apply Tax Rates
  Apply the slab rates applicable for Tax Year 2026-27 (New Regime default or Old Regime if opted) to compute gross tax liability.
• 4Add Surcharge and Cess
  Add applicable surcharge (based on income level) and 4% Health & Education Cess.
• 5Deduct TDS Already Deducted/Expected
  Subtract any TDS already deducted or likely to be deducted during the year (salary TDS, FD TDS, etc.).
• 6Check ₹10,000 Threshold
  If net tax liability after TDS exceeds ₹10,000 — advance tax is applicable. Pay installments per schedule.

Case: Priya Kapoor, Chartered Accountant, Lajpat Nagar, Delhi

Priya is a CA in private practice. For Tax Year 2026-27, she estimates:

• Professional fees income: ₹18 lakh
• FD interest: ₹80,000
• LTCG from equity mutual funds: ₹1,80,000
• TDS expected on FD: ₹8,000
• Client TDS (if any): ₹0 (most clients don’t deduct for CA fees below threshold)

Step-by-step calculation (New Tax Regime, TY 2026-27):

Tax on ₹19,35,000 (New Regime slabs): ≈ ₹3,64,500
LTCG @ 12.5% on ₹55,000: ₹6,875
Total tax: ₹3,71,375
Add 4% Cess: ₹14,855
Total Tax + Cess: ₹3,86,230
Less TDS on FD: ₹8,000
Net Advance Tax Payable: ₹3,78,230

Missing advance tax installments doesn’t just mean delayed payment — it triggers automatic interest that is calculated when you file your ITR. There’s no notice needed — the system calculates it automatically. Under the Income Tax Act 2025, these interest provisions are renumbered but work identically to the old Act.

Section 424 (Old Section 234B) — Shortfall in Total Advance Tax Paid

• Triggered when total advance tax paid during the year is less than 90% of assessed tax liability
• Interest rate: 1% per month (or part of month)
• Calculated from April 1 of the assessment year until actual payment date (or ITR filing date)
• Even paying ₹1 less than 90% triggers Section 424

Section 425 (Old Section 234C) — Shortfall in Installments

• Triggered when individual installments are short of the required cumulative percentage
• Interest rate: 1% per month for 3 months on shortfall (Q1/Q2/Q3); 1 month for Q4 (March 15) shortfall
• Applied separately for each missed/short installment
• Applies even if you pay 100% by March 15 — past shortfalls still attract interest

Income Tax Penalty Notice 2026 — Types, Reply & Waiver Guide

1. Go to incometax.gov.in → e-Pay Tax
2. Enter PAN and confirm
3. Select Income Tax → Assessment Year 2027-28 (for TY 2026-27)
4. Select Type of Payment: (100) Advance Tax
5. Enter amounts under respective heads (Basic Tax, Surcharge, Cess)
6. Choose bank/payment method → Pay
7. Download Challan 280 receipt — save it permanently

Capital gains are inherently unpredictable — you can’t always know in April that you’ll sell shares in November. The law recognizes this with a special provision:

• If capital gains arise after March 15 — the entire capital gains tax can be paid by March 31 without any 234C interest
• If capital gains arise between December 15 and March 15 — include them in the March 15 installment
• If capital gains arise before December 15 — they should be included in installments proportionately from the installment following their realization

Short Term vs Long Term Capital Gains — Complete Tax Guide 2026

Mistake 1: Ignoring advance tax because “I’ll pay everything while filing ITR”
Reality: You can pay all tax at ITR time, but Section 234B and 234C interest will be automatically added — often ₹10,000–₹1,00,000+ depending on liability size.

Mistake 2: Selecting wrong Assessment Year while making payment
Reality: For Tax Year 2026-27, select AY 2027-28. Wrong AY = payment doesn’t reflect against correct year = mismatch in ITR = potential notice.

Mistake 3: Not revising estimates mid-year when income changes significantly
Reality: Advance tax is based on estimated income. If your income increases significantly in Q2, revise your estimate and increase subsequent installments. The law doesn’t penalize you for initially lower estimates if you correct in subsequent installments.

Mistake 4: Senior citizens with business income assuming they’re exempt
Reality: The senior citizen exemption applies only if there is NO business or professional income. A 65-year-old Delhi retailer with shop income is fully liable for advance tax.

Mistake 5: Not keeping Challan 280 receipts
Reality: Advance tax payments must match in your ITR. If a payment doesn’t reflect in Form 26AS and you don’t have the challan, claiming credit becomes difficult. Always save challan receipts digitally.