Your accountant tells you in November that you owe the government money you didn’t know was due in June. That’s the moment most salaried-turned-freelance professionals, business owners, and anyone with rental or capital gains income first run into advance tax, and the interest meter under Section 234B has usually already started running by then.

Advance tax isn’t a separate tax. It’s the same income tax you’d pay anyway, split into four instalments across the financial year instead of one lump sum after March 31. Get the math and the dates right, and you avoid two separate interest charges that can add up to real money on a six-figure tax bill. Get it wrong, and the Income Tax Department doesn’t send a reminder before the penalty starts accruing.

Who Needs to Pay Advance Tax?

Anyone whose total tax liability for the year, after TDS, exceeds ₹10,000 must pay advance tax under Section 208 of the Income Tax Act. Salaried employees usually skip this because their employer deducts TDS on nearly all of their income. The moment you add freelance income, consulting fees, rental income, capital gains from stocks or property, or interest income that pushes your net liability past that ₹10,000 mark, advance tax applies to you too, even if you’re also salaried.

Senior citizens (60 years or older) who don’t run a business are exempt from advance tax entirely. Everyone else, including proprietors, partners drawing profit share, and companies, falls under the standard schedule.

How Do You Calculate Advance Tax?

Start with your estimated total income for the financial year from all heads: salary, business or professional income, capital gains, rental income, and other sources. Apply the applicable slab rates (or the flat 22% or 25% corporate rate if you’re a company) to arrive at gross tax payable. Add surcharge and cess where applicable, then subtract any TDS already deducted or expected to be deducted during the year, along with eligible tax credits.

The formula looks like this:

Advance Tax Payable = (Estimated Tax on Total Income) − (TDS/TCS already deducted or expected) − (Relief under Sections 90/91, if any)

Say a freelance designer in Bhopal estimates ₹18 lakh in gross receipts for FY 2026-27, with ₹4 lakh in business expenses, leaving ₹14 lakh in taxable business income after deducting eligible expenses and the standard deduction where applicable. Under the new tax regime slab rates, the estimated tax works out to roughly ₹1,52,000 including cess. If clients have deducted ₹20,000 in TDS under Section 194J during the year, the remaining ₹1,32,000 becomes the advance tax liability, split across four instalments. This is a worked illustration based on standard slab calculations; your actual figure depends on your specific deductions and should be verified with current rates before you file.

One judgment call that trips up first-time filers: if you’re unsure whether a large one-off payment (a bonus client project, a property sale) will land before or after a due date, estimate conservatively and pay slightly more in the earlier instalment. Catching up in December or March is cheaper than carrying a shortfall from June, because Section 234C interest compounds per quarter of delay, not just at year-end.

If you report income under the presumptive taxation scheme, whether under Section 44AD for small businesses or Section 44ADA for professionals, you get a concession. You can pay 100% of your advance tax liability in a single instalment by 15 March, instead of spreading it across four dates. This is one of the few places where correctly handled income tax return filing for presumptive taxpayers genuinely simplifies compliance rather than adding to it, and it’s worth confirming with your tax advisor whether your income qualifies before you commit to the quarterly schedule.

What Are the Advance Tax Due Dates for FY 2026-27?

For individuals, firms, and companies not under the presumptive scheme, the schedule is the same four dates every year:

1. 15 June – 15% of total advance tax liability
2. 15 September – 45% of total liability (cumulative)
3. 15 December – 75% of total liability (cumulative)
4. 15 March – 100% of total liability (cumulative)

Presumptive taxpayers under Sections 44AD and 44ADA pay the full 100% by 15 March in one instalment. Miss the 15 June date by a few days and most people don’t notice the cost; miss it by a full quarter and the compounding interest becomes visible on your tax computation sheet.

Advance Tax for Self-Employed Professionals and Freelancers

This is where most of the confusion lives, because self-employed income doesn’t come with a predictable monthly TDS cycle the way a salary does. A freelancer who signs three new clients in August has no clean way to know in June what their September instalment should look like. Structured advance tax for self-employed professionals planning through quarterly reviews keeps your cash flow predictable instead of forcing a scramble in the last quarter, especially if your income genuinely fluctuates, a common pattern among consultants and freelance creatives.

The practical fix is to run a rough quarterly income review rather than a single annual estimate. Revisit your projected income and recalculate the remaining instalments every quarter, adjusting upward or downward as actual billings come in. It takes twenty minutes with a spreadsheet, but only if you already know what hit your account that month, not what you think hit it.

That same discipline matters even more at the point of setting up a business, because how your income gets reported from day one shapes every advance tax calculation after it. Proprietors in particular tend to get this wrong early, mixing personal and business cash flow until the first quarterly estimate becomes a guess rather than a number.

If you’re at that stage, it’s worth reading through the complete proprietorship registration process in detail before you finalize how your books are structured, since the registration route you choose affects how cleanly your advance tax estimates come together later.

What Happens If You Miss an Advance Tax Payment?

Two separate interest provisions apply, and they’re not interchangeable. Section 234B applies when you’ve paid less than 90% of your total assessed tax by 31 March. Interest runs at 1% per month (simple interest) on the shortfall, calculated from 1 April of the assessment year until the date you pay the balance.

Section 234C applies when you’ve underpaid a specific instalment, even if your total payment for the year eventually catches up. It charges 1% per month for a three-month period for each instalment you shorted, calculated on the shortfall for that quarter alone. This is the provision that surprises people most, because you can be fully compliant by year-end and still owe interest for being behind schedule in June or September.

Most clients who end up paying this interest aren’t bad at tax law; they’re behind on reconciling what actually came in that month. Clean, current accounting and bookkeeping is what turns a quarterly estimate into an accurate number instead of a guess, and it’s the single biggest factor separating clients who sail through advance tax season from those who don’t.

There’s no penalty beyond interest for a genuine shortfall, but repeated or deliberate non-payment that the department flags during assessment can invite closer scrutiny of your return.

How to Pay Advance Tax Online: Step by Step

Once your quarterly estimate is ready, the payment itself takes a few minutes:

1. Log in to the e-filing portal at the Income Tax Department’s official site and navigate to e-Pay Tax under the Quick Links section.
2. Select Challan No. 280 (or the equivalent current challan for income tax payments) and choose “Advance Tax (100)” as the payment type.
3. Enter your PAN, assessment year, and the estimated amount for that instalment based on your running calculation.
4. Choose your payment method, net banking, debit card, UPI, or RTGS/NEFT, and complete the transaction.
5. Save the generated challan receipt with the BSR code and challan serial number. You’ll need these exact details when filing your return, so store them somewhere you won’t lose track of before filing season.

If your estimated income shifts significantly between instalments (a new contract, a property sale that falls through, a client payment that slips to the next quarter), recalculate before the next due date rather than waiting until March to true everything up in one go.

First-time business owners often underestimate how much this ongoing discipline matters, and it’s one of the questions worth raising when you’re choosing who handles your accounts in the first place rather than after the first interest notice arrives.

A good advisor doesn’t just file your return in July; they flag a drifting estimate in September, while there’s still time to correct it cheaply. That’s the difference between advance tax being a quarterly formality and it being a recurring source of stress.

Getting advance tax right every quarter is less about complex calculation and more about disciplined tracking. If your income sources have gotten more complex this year, whether from freelance work, rental property, or a new business line, it’s worth having Chandwani & Company review your quarterly estimates rather than guessing and correcting after the fact.

Frequently Asked Questions

Q1. Is advance tax applicable to salaried employees?

A1. Generally no, because employer TDS covers most salaried tax liability. However, if you have additional income from freelancing, capital gains, rental property, or interest that pushes your total tax liability (after TDS) above ₹10,000, advance tax applies to you as well, in addition to your salary TDS.

Q2. Can I pay advance tax after the due date?

A2. Yes, you can pay late, but you’ll owe interest under Section 234C for that specific instalment and potentially Section 234B if your total shortfall by 31 March exceeds 10% of your assessed tax. Paying late is always cheaper than not paying at all before the return filing deadline.

Q3. What if I overestimate my advance tax and pay too much?

A3. Any excess advance tax paid becomes a refund once you file your return and the assessment is processed. You can also adjust future instalments downward if you realize your income estimate was too high, rather than waiting for a refund.

Q4. Do senior citizens need to pay advance tax?

A4. Senior citizens aged 60 or above are exempt from advance tax, provided they do not have income from business or profession. Senior citizens running a business or practicing a profession still fall under the regular advance tax schedule.

Q5. How is advance tax different for companies compared to individuals?

A5. Companies follow the same four due dates and percentage slabs as individuals (15%, 45%, 75%, 100%), but they don’t get the presumptive taxation concession available to eligible individuals and firms under Sections 44AD and 44ADA, so companies must always follow the quarterly schedule.

Q6. Can I use last year’s income to estimate this year’s advance tax?

A6. You can use it as a starting reference, but the law requires you to estimate current-year income, not replicate last year’s figures. If your income has grown or shrunk materially, basing instalments on outdated numbers increases your risk of a 234C shortfall penalty.