Advance Tax Due Dates for FY 2026-27: A Simple Guide for Small Business Owners

If your net tax liability this year is more than ₹10,000, the Income Tax Department expects you to pay it across the year, not in a single lump sum after March. This is advance tax, and for most SMEs and freelancers it is the single most forgotten compliance item on the calendar.

This guide walks through who owes it, the four dates for FY 2026-27, how to estimate each installment, the Section 44AD exception, and what happens if you pay late.

What Is Advance Tax and Who Has to Pay It?

Advance tax is income tax paid in installments during the financial year it is earned, rather than at the end of the year. The rule comes from the Income Tax Act 2025 (which replaced the 1961 Act from April 1, 2026) and applies to any assessee, whether an individual, partnership, LLP, or company, whose net tax liability exceeds ₹10,000 in a financial year.

"Net" is the important word. It means your estimated total tax minus TDS already deducted, TCS collected, and eligible credits. If TDS on your salary or professional fees already covers most of your liability and what remains is under ₹10,000, you do not need to pay advance tax.

Who typically owes advance tax:

• Freelancers and consultants whose clients do not deduct enough TDS.
• SME owners running proprietorships, partnerships, or private limited companies.
• Individuals with significant rental, capital gains, or interest income.
• Professionals (doctors, architects, lawyers) on the regular books-of-accounts method.

Who is exempt:

• Resident senior citizens (60+) with no income from business or profession.
• Anyone whose net liability after TDS is ₹10,000 or less.

FY 2026-27 Advance Tax Installment Schedule

The four due dates for FY 2026-27 are below. Each date carries a cumulative percentage, meaning the total you should have paid by that point in the year, not the amount for that quarter alone.

For FY 2026-27, all four dates fall on a working day: June 15, 2026 (Monday), September 15, 2026 (Tuesday), December 15, 2026 (Tuesday), and March 15, 2027 (Monday). If a future year's date falls on a Sunday or gazetted holiday, the effective deadline shifts to the next working day.

Tax is paid via challan ITNS 280 on the Income Tax portal (incometax.gov.in, e-Pay Tax section). On the challan, select Major Head 0021 (Income-tax, other than companies) and Minor Head 100 (Advance Tax). Keep the challan receipt. You will need the BSR code and challan serial number when filing ITR.

How to Calculate Your Advance Tax Liability

The calculation follows four steps. Work through them with your own numbers.

Step 1. Estimate total income for FY 2026-27. Add projected business or professional income, salary, rental income, capital gains, and other sources. Be realistic, not conservative. Under-estimating to pay less triggers interest later.

Step 2. Apply deductions and the right tax regime. Subtract business expenses, depreciation, and Chapter VIA deductions (80C, 80D, 80G, etc., if you are on the old regime). Most SMEs and freelancers in FY 2026-27 are on the new regime by default, which has lower slab rates but drops most deductions.

Step 3. Calculate tax on the taxable income using the applicable slab rates, then add 4% health and education cess. The revised new-regime slabs for FY 2025-26 and FY 2026-27 (Budget 2025, unchanged in Budget 2026) are:

Resident individuals with taxable income up to ₹12,00,000 get a Section 87A rebate of up to ₹60,000, which zeroes out tax entirely at that level under the new regime.

Step 4. Subtract TDS, TCS, and any advance tax already paid. The remainder is what you owe in advance tax installments.

A Worked Example

Priya is a freelance UX designer. Her estimated FY 2026-27 numbers:

• Gross professional receipts: ₹18,00,000
• Business expenses (software, co-working, internet): ₹3,00,000
• Taxable income: ₹15,00,000
• Tax under new regime (₹20,000 + ₹40,000 + ₹45,000 = ₹1,05,000) plus 4% cess = ₹1,09,200
• TDS deducted by clients under Section 393 of the Income Tax Act 2025 (the professional-fees rate carried forward from old 194J at 10%): ₹1,80,000 on gross receipts

In Priya's case, TDS already exceeds her liability, so she owes no advance tax and is actually due a refund at year end. This is why Step 4 matters. Many freelancers pay advance tax they do not owe because they skip the TDS subtraction.

Now consider Ramesh, who runs a small trading business with ₹18,00,000 net taxable income and zero TDS. His tax:

• 0 to 4L: Nil
• 4L to 8L (₹4L at 5%): ₹20,000
• 8L to 12L (₹4L at 10%): ₹40,000
• 12L to 16L (₹4L at 15%): ₹60,000
• 16L to 18L (₹2L at 20%): ₹40,000
• Subtotal: ₹1,60,000 plus 4% cess = ₹1,66,400

His advance tax schedule:

Note: a smaller SME with taxable income up to ₹12 lakh will have zero net liability after Section 87A rebate and therefore no advance tax obligation at all. The ₹10,000 threshold is not triggered.

Section 44AD Filers: A Single March 15 Payment

Small businesses and professionals filing under the presumptive taxation schemes get a major simplification.

• Section 44AD (businesses with turnover up to ₹2 crore, extended to ₹3 crore if cash receipts are 5% or less of total receipts).
• Section 44ADA (professionals with receipts up to ₹50 lakh, extended to ₹75 lakh if cash receipts are 5% or less).
• Section 44AE (goods carriage operators).

For these filers, the four-installment rule does not apply. You pay the entire advance tax liability in one go by March 15, 2027. No June, September, or December installment is required. This rule carries forward from the 1961 Act into the Income Tax Act 2025 without change.

This is genuinely useful for seasonal SMEs. A textiles wholesaler whose peak is October to December no longer has to estimate June and September numbers on thin data.

One catch: if you pay a single rupee less than 100% of your actual liability by March 15, interest under Section 425 (old Section 234C) applies to the shortfall for one month.

Interest for Missed or Short Installments: Section 425 (old 234C)

If you pay less than the cumulative percentage due at any installment, you owe simple interest at 1% per month on the shortfall. Under the Income Tax Act 2025, this sits in Section 425, the direct replacement for the old Section 234C. The mechanics work installment by installment.

Small tolerance: For the first two installments, if your paid cumulative is at least 12% by June 15 or 36% by September 15, interest is waived even if you fall short of the strict 15% or 45% target. This is the law's small mercy for honest estimation errors.

Section 424 (old Section 234B) is a separate provision. If your total advance tax paid during the year is less than 90% of actual assessed liability, 1% per month interest applies from April 1 of the assessment year until you settle. Missing the March 15 installment entirely will almost always trip Section 424 (234B) as well as Section 425 (234C).

Note on transition: For any default relating to advance tax for FY 2025-26 (AY 2026-27), the CBDT has clarified that interest is computed under the old Sections 234B and 234C of the 1961 Act, not under Sections 424 and 425 of the 2025 Act, because the default arose before commencement of the new Act. From FY 2026-27 onward, the new section numbers apply.

Common Mistakes to Avoid

• Calculating on gross turnover instead of net profit. Advance tax is on taxable income, not revenue. A freelancer grossing ₹18 lakh with ₹3 lakh legitimate business expenses owes tax on ₹15 lakh.
• Forgetting to subtract TDS already deducted. Especially common for salaried professionals with side income, or freelancers whose clients deduct under Section 393.
• Paying before applying the Section 87A rebate (up to ₹60,000, zeroing tax for resident individuals with taxable income at or below ₹12 lakh under the new regime from FY 2025-26 onward). Many SMEs overpay because they compute tax without the rebate.
• Assuming Section 44AD means "no advance tax." It means one installment by March 15, not zero.
• Wrong challan head selection. On Challan ITNS 280, select Major Head 0021 (non-corporate) and Minor Head 100 (Advance Tax). Minor Head 300 is self-assessment. Minor Head 400 is regular-assessment tax. Picking those instead will misallocate your payment.
• Missing the deadline because it fell on a holiday. Pay at least two working days early so bank cutoffs do not become your problem.

Let TaxGarden Handle the Calendar

Four dates a year sounds simple. In practice it means estimating annual liability twice (before June and before September), tracking TDS certificates that arrive late, reconciling challans with Form 26AS, and remembering the 12% and 36% tolerance rule when a quarter is tight.

Explore TaxGarden's Compliance Standard plan. We track your quarterly advance tax liability, prepare challans on time, reconcile with Form 26AS, and keep Section 234C interest off your books.

Frequently Asked Questions

I am a freelancer with TDS deducted by all my clients. Do I still owe advance tax?

Only if your estimated total tax exceeds the TDS already deducted by more than ₹10,000. Subtract TDS from your full-year tax estimate first. If the remainder is ₹10,000 or less, you owe nothing in advance.

What if my income increases sharply after September, can I catch up in later installments?

Yes. Section 234C allows the shortfall in early installments to be cured by paying higher amounts later, but interest on the earlier shortfall still applies. For sudden capital gains or windfall income, pay the full additional tax in the next installment to limit damage.

Does the ₹10,000 threshold change under the Income Tax Act 2025?

No. The ₹10,000 net liability threshold carries forward unchanged. The four installment dates and cumulative percentages (15, 45, 75, 100) are unchanged. What changed is the section numbering. Section 234B is now Section 424, and Section 234C is now Section 425.

If I am on Section 44AD, can I voluntarily pay in quarterly installments?

Yes, nothing prevents you from paying in multiple installments. But the law only requires a single payment by March 15, so there is no penalty for skipping the June, September, and December dates.

What happens if March 15 falls on a Sunday or holiday?

The deadline shifts to the next working day. For FY 2026-27, March 15, 2027 is a Monday, so no shift applies. Always confirm on incometax.gov.in before the date.

Is advance tax applicable if I am salaried with no other income?

Almost never. Your employer deducts TDS each month under Section 392, which typically covers the full liability. Advance tax only kicks in if you have significant non-salary income (rent, capital gains, side income) where TDS falls short of ₹10,000 below total liability.

This guide is current as of April 2026 and reflects the Income Tax Act 2025 effective April 1, 2026. Installment dates, the ₹10,000 threshold, 12% and 36% tolerance, and the Section 44AD single-payment rule have been verified against incometax.gov.in, the Income Tax Act 2025 advance-tax FAQs on taxguru.in, and published guidance from ClearTax, BajajFinserv, and Tax2win. Confirm slab rates and rebate thresholds against the latest CBDT notification before filing a live challan.