Advance Tax for Businesses: Due Dates, Calculation, and Penalties

The advance tax due dates for FY 2025-26 follow a fixed quarterly schedule: 15% by June 15, 45% by September 15, 75% by December 15, and 100% by March 15, 2026. Every taxpayer with an estimated income tax liability exceeding ₹10,000 after TDS must pay advance tax under Sections 207 to 211 of the Income Tax Act. Missing the March 15 deadline triggers interest under Section 234B (1% per month on total shortfall) and Section 234C (1% per month for installment deferment). With March 15 being the final installment date, here is a complete breakdown of who must pay, how to calculate each installment, what penalties apply, and how to pay online using Challan 280.

What is Advance Tax? Definition and Legal Basis

Advance tax is income tax paid in installments during the financial year in which the income is earned, rather than as a lump sum after the year ends. It is governed by Sections 207 to 211 of the Income Tax Act, 1961, and administered by the Central Board of Direct Taxes (CBDT) through the Income Tax e-Filing portal.

The concept is straightforward: if you earn income during the year, the government expects tax on that income to be paid progressively, not delayed until the following year. For salaried employees, TDS handles most of this automatically. But for business owners, freelancers, professionals, and anyone with income sources beyond salary (rental income, capital gains, interest income), advance tax is the mechanism that keeps tax payments current. Think of it as the government's pay-as-you-earn system for non-salaried income.

Who Must Pay Advance Tax?

Under Section 208, every person whose estimated tax liability for the financial year exceeds ₹10,000 (after deducting TDS) must pay advance tax. "Person" here includes individuals, Hindu Undivided Families (HUFs), partnership firms, LLPs, companies, and every other assessable entity. The ₹10,000 threshold may sound low, but once you factor in TDS already deducted by employers, banks, and clients, many salaried individuals fall below it. The obligation primarily impacts:

• Private Limited Companies and OPCs: Corporate tax liability almost always exceeds ₹10,000. Every Pvt Ltd company must pay advance tax.
• LLPs and Partnership Firms: Taxed at a flat 30% + cess, most LLPs with net income above ₹40,000 cross the ₹10,000 threshold.
• Sole Proprietors and Freelancers: If client TDS does not cover the full liability and the balance exceeds ₹10,000, advance tax applies.
• Salaried Individuals with Side Income: Rental income, capital gains, interest income, or freelance earnings can push the residual tax above ₹10,000.

Advance Tax Due Dates and Installment Schedule for FY 2025-26

Section 211 of the Income Tax Act prescribes 4 installments for advance tax. Each installment represents a cumulative percentage of the total estimated tax liability for the year. Here is the complete schedule for FY 2025-26 (Assessment Year 2026-27):

The percentages are cumulative. By September 15, you should have paid 45% of your total estimated tax, not just 30%. If your first installment was short, the second installment must cover the gap. The March 15 installment closes the loop: 100% of estimated tax must be paid by this date.

How to Calculate Advance Tax: Step-by-Step

Advance tax calculation requires estimating your total income for the financial year, computing tax on that income, deducting TDS already credited, and splitting the balance into 4 installments. Here is the process:

1. Estimate Total Income: Add all income sources for the financial year: business profit, salary, rental income, capital gains, interest, and other income. Use your previous year's income as a starting benchmark.
2. Compute Tax on Estimated Income: Apply the applicable tax rate. For individuals, use the slab rates (new or old regime). For companies, apply 22% (Section 115BAA) or 25% (turnover up to ₹400 crore). For LLPs, apply 30%.
3. Add Surcharge and Cess: Add applicable surcharge based on income level and 4% Health and Education Cess on the total tax including surcharge.
4. Deduct TDS: Subtract TDS already deducted or expected to be deducted during the year. Bank interest TDS (Section 194A), client TDS (Section 194J/194C), and salary TDS are common credits.
5. Determine Net Tax Payable: The balance after deducting TDS is your advance tax liability for the year. If this amount is ₹10,000 or less, no advance tax is required.
6. Split into Installments: Pay 15% by June 15, 30% by September 15, 30% by December 15, and 25% by March 15.

Calculation Example: Private Limited Company

Raj runs a Private Limited Company with the following estimates for FY 2025-26:

Raj's quarterly installments: ₹79,500 by June 15, ₹1,59,000 by September 15, ₹1,59,000 by December 15, and ₹1,32,500 by March 15.

Calculation Example: Freelancer Under Regular Taxation

Priya is a freelance consultant earning ₹18,00,000 annually. Her clients deduct TDS (10% under Section 194J) on ₹10,00,000 of her invoices. Under the new tax regime for FY 2025-26:

Priya's installments: ₹6,996 by June 15, ₹13,992 by September 15, ₹13,992 by December 15, and ₹11,660 by March 15.

Advance Tax for Presumptive Taxation (Section 44AD and 44ADA)

Businesses under Section 44AD and professionals under Section 44ADA enjoy a simplified advance tax rule: they must pay the entire advance tax liability in a single installment by March 15. No quarterly installment schedule applies.

Section 44AD: Small Businesses

Section 44AD applies to resident individuals, HUFs, and partnership firms (excluding LLPs) with turnover up to ₹3 crore (where digital receipts exceed 95% of turnover) or ₹2 crore otherwise. Under this scheme, taxable income is deemed at 8% of turnover (6% for digital receipts). The entire advance tax on this deemed income must be paid by March 15.

A shopkeeper with ₹1.5 crore turnover (95% digital) declares ₹9 lakh as taxable income (6% of ₹1.5 crore). After applying slab rates and cess, the advance tax is paid in full by March 15. No bookkeeping, no quarterly calculations, no partial payments.

Section 44ADA: Professionals

Section 44ADA covers professionals (doctors, lawyers, architects, engineers, chartered accountants, and others specified under Section 44AA) with gross receipts up to ₹75 lakh. Taxable income is deemed at 50% of gross receipts. The advance tax rule is identical: single payment by March 15.

Section 234B: Interest on Default in Advance Tax Payment

Section 234B applies when the total advance tax paid during the financial year is less than 90% of the assessed tax. The interest is calculated at 1% per month (or part of a month) on the difference between the assessed tax and advance tax paid.

When Section 234B Triggers

• You paid no advance tax at all during the financial year
• Your total advance tax payments were less than 90% of the final assessed tax
• Interest runs from April 1 of the assessment year until the date of determination under Section 143(1) or the date of regular assessment

Section 234B Calculation Example

Suppose your assessed tax (after TDS) is ₹2,00,000, but you paid only ₹1,50,000 as advance tax (75% of assessed tax, below the 90% threshold). The shortfall is ₹50,000 (₹2,00,000 minus ₹1,50,000). If assessment is completed in 4 months from April 1:

Section 234B interest = ₹50,000 x 1% x 4 months = ₹2,000

Had you paid ₹1,80,000 or more (90%+), Section 234B would not apply at all, regardless of installment timing.

Section 234C: Interest on Deferment of Advance Tax Installments

Section 234C penalizes late or short payment of individual installments. Unlike Section 234B (which looks at the total year-end picture), Section 234C examines each quarterly installment against the cumulative percentage targets.

Section 234C Interest Rates by Installment

Section 234C Calculation Example

Assessed tax (after TDS) for the year: ₹4,00,000. Here is what happens if installments are paid late:

Total Section 234C interest: ₹900 + ₹0 + ₹1,200 + ₹200 = ₹2,300

The March 15 installment shortfall attracts only 1 month of interest (not 3), provided the shortfall is paid by March 31. This is one of the few built-in grace provisions in the advance tax system.

Advance Tax on Capital Gains

Capital gains create a unique challenge for advance tax because they are unpredictable. You cannot estimate in June that you will sell a property in November. The Income Tax Act addresses this by requiring advance tax on capital gains to be paid in the quarter in which the gain arises.

How Capital Gains Advance Tax Works

• Q1 capital gain (April to June): Include in the June 15 installment
• Q2 capital gain (July to September): Include in the September 15 installment
• Q3 capital gain (October to December): Include in the December 15 installment
• Q4 capital gain (January to March): Include in the March 15 installment

If capital gains arise after a due date has passed, Section 234C interest is not charged for that installment on the capital gains portion. For example, if you sell equity shares in August and pay the advance tax on those gains by September 15, no interest applies for the missed June 15 installment on that specific capital gain.

This provision is genuinely helpful and often overlooked. Business owners who sell investments mid-year worry about penalties for the earlier installments. On the capital gains portion specifically, the law only expects payment in the relevant quarter.

Advance Tax for Different Business Structures

The advance tax obligation varies based on your business structure, tax rate, and applicable deductions. Here is a comparison:

Special Note for Startups

Startups claiming the Section 80-IAC tax holiday (DPIIT-recognized, turnover under ₹100 crore) may have zero tax liability for 3 consecutive years. During the holiday period, no advance tax is required since the estimated tax liability is nil. Once the holiday ends, the full quarterly advance tax obligation resumes from the following financial year.

Early-stage startups often report losses in the initial years. If your estimated income for the year is negative or below the basic exemption limit, advance tax does not apply. However, the moment profitability crosses the threshold (or the tax holiday expires), quarterly advance tax payments become mandatory.

Senior Citizen Exemption from Advance Tax

Section 207 of the Income Tax Act provides a clear exemption: resident senior citizens (aged 60 or above) who do not have income from business or profession are not required to pay advance tax. This means a retired individual earning pension, rental income, interest income, and capital gains is fully exempt from the advance tax obligation.

The exemption applies only if no business or professional income exists. A 65-year-old consultant still earning professional fees must pay advance tax on the professional income, even though pension and interest income would otherwise qualify for exemption. The test is binary: any business or professional income, regardless of amount, removes the exemption entirely.

How to Pay Advance Tax Online: Step-by-Step Process

Advance tax is paid online through the Income Tax e-Filing portal using Challan ITNS 280. The process takes about 10 to 15 minutes.

1. Visit the e-Pay Tax Portal: Go to www.incometax.gov.in and navigate to e-Pay Tax under the Quick Links section.
2. Enter PAN: Provide your PAN (or TAN for companies/firms) and confirm your identity via OTP sent to your registered mobile number.
3. Select Challan ITNS 280: Under the Income Tax tile, select Challan No. ITNS 280.
4. Choose Payment Type: Select Advance Tax (100) as the type of payment. Do not select Self-Assessment Tax (300) or Regular Assessment Tax (400).
5. Enter Assessment Year: For FY 2025-26 payments, select AY 2026-27.
6. Enter Amount: Provide the exact installment amount. The portal does not calculate installments for you.
7. Select Payment Method: Pay via net banking (all major banks supported), debit card, or UPI. Net banking is the most reliable option for amounts above ₹1 lakh.
8. Download Receipt: After successful payment, download the challan receipt (BSR code, challan serial number, and date). Keep this for your ITR filing records.

Verifying Your Advance Tax Payment

After payment, verify the credit in your Form 26AS (Annual Tax Statement) and AIS (Annual Information Statement) on the Income Tax portal. Advance tax payments typically reflect in Form 26AS within 3 to 5 working days of challan generation. Cross-check the BSR code, date, and amount before filing your ITR.

Advance Tax Planning Strategies to Minimize Burden

Advance tax is not just a compliance box to tick. With the right planning, you can reduce the total amount payable and the cash flow impact on your business.

1. Accurate Income Estimation

Overestimating income leads to excess advance tax (tied up with the government until refund). Underestimating triggers interest under Section 234B and 234C. Work with your accounting team to build realistic quarterly projections based on actual business performance, not prior-year figures alone.

2. Maximize TDS Credits

Every rupee deducted as TDS reduces your advance tax burden. Ensure clients are deducting TDS on your invoices. If you are a freelancer or professional, verify that Form 26AS reflects all TDS credits before computing the next advance tax installment. Unclaimed TDS is essentially a free loan to the government.

3. Time Deductions and Expenses

If you plan to make tax-saving investments (under the old tax regime) or incur deductible business expenses, timing them before the installment due date reduces the advance tax computation. A ₹1.5 lakh Section 80C investment made in May reduces the June 15 installment by the tax saved on that amount.

4. Use Presumptive Taxation if Eligible

If your business turnover is under ₹3 crore (95%+ digital receipts) and actual expenses are lower than the deemed percentage, Section 44AD saves both compliance effort and advance tax timing pressure. One payment by March 15 instead of 4 quarterly payments simplifies cash flow management significantly.

5. Engage a Virtual CFO for Complex Structures

Businesses with multiple income streams (salary + business + capital gains + rental) benefit from professional advance tax planning. A Virtual CFO service models quarterly tax projections, tracks TDS credits, and adjusts installments proactively, preventing both underpayment interest and cash flow drain from overpayment.

Advance Tax for Startups vs Established Businesses

The advance tax experience differs significantly depending on where your business stands in its lifecycle.

Startups (First 3 to 5 Years)

• Income volatility: Revenue can spike or dip quarter to quarter, making estimation difficult. Conservative estimates with mid-year adjustments work best.
• Limited TDS credits: Early-stage startups may not have clients deducting TDS, leaving the full tax burden on advance tax. Factor this into cash reserves.
• Section 80-IAC holiday: DPIIT-recognized startups with active tax holidays have zero advance tax obligation during the holiday period.
• Compliance cost: For startups under presumptive taxation, the single March 15 payment eliminates quarterly computation costs.

Established Businesses (5+ Years)

• Stable income baseline: Prior-year figures provide a reliable starting point. Adjust by 10% to 15% for growth or known changes.
• Systematic TDS ecosystem: Multiple clients and revenue streams generate substantial TDS credits that offset advance tax amounts.
• Multiple installment tracking: Companies with tax audit requirements (turnover above ₹1 crore) need precise quarterly tracking and timely payments.
• Professional support: Most established businesses engage a CA or compliance service to handle advance tax computation alongside quarterly compliance filings.

Common Mistakes to Avoid When Paying Advance Tax

After handling advance tax compliance for thousands of businesses, these are the errors that come up repeatedly:

1. Ignoring the ₹10,000 threshold: Business owners assume TDS covers everything. If the net tax after TDS exceeds ₹10,000, advance tax is mandatory. Check this at the start of the financial year.
2. Treating installment percentages as standalone: The 15%, 45%, 75%, 100% are cumulative targets. If you underpay in Q1, Q2 must compensate.
3. Wrong assessment year on Challan 280: For FY 2025-26 payments, the assessment year is 2026-27. Selecting the wrong AY means the payment is credited to the wrong year, requiring a correction request to the AO.
4. Paying advance tax as self-assessment tax: Selecting code 300 (self-assessment) instead of 100 (advance tax) on Challan 280 creates reconciliation issues. Always double-check the payment type.
5. Not adjusting for mid-year income changes: A one-time capital gain, a large project, or loss of a client changes the annual estimate. Recalculate before each installment date.
6. Missing the March 15 to March 31 window: Section 234C interest on the March 15 shortfall is only 1% for 1 month if paid by March 31. After March 31, the payment becomes self-assessment tax and Section 234B applies.

Summary

Advance tax for FY 2025-26 follows a 4-installment schedule with due dates on June 15, September 15, December 15, and March 15. The obligation applies to every individual, firm, LLP, and company with estimated tax liability above ₹10,000 after TDS. Businesses under presumptive taxation (Section 44AD/44ADA) pay once by March 15. Missing installments triggers Section 234C interest at 1% per month per installment, while paying less than 90% of total assessed tax triggers Section 234B interest at 1% per month from April 1 of the assessment year. Pay online via Challan ITNS 280, verify credits in Form 26AS, and adjust installments when income changes mid-year. For businesses needing professional advance tax computation and ITR filing support, IncorpX manages end-to-end tax compliance for all entity types.