Advance Tax Calculator

The Cumulative Checkpoint Rule

Advance tax due dates aren't four equal installments — they're cumulative checkpoints. By 15 June you should have paid at least 15% of your year's total advance tax; by 15 September, at least 45% cumulative; by 15 December, at least 75% cumulative; and by 15 March, the full 100%. Expressed as the incremental amount due at each date (on top of what you've already paid), that works out to 15%, 30%, 30%, and 25% respectively.

Missing a checkpoint — even if you catch up by the next one — can trigger interest under Sections 234B and 234C for the shortfall during the period you were behind. Paying the right cumulative percentage on time matters more than just paying the right total by year-end.

Worked Example

₹15,00,000 salary income, ₹50,000 TDS already deducted, new regime:

That ₹47,500 balance splits across the year as:

Who Actually Needs to Pay It

Advance tax applies to anyone — salaried, self-employed, or otherwise — whose total tax liability for the year, after subtracting TDS/TCS already deducted, exceeds ₹10,000. For most salaried employees with no other income, employer TDS alone usually covers this, so advance tax becomes relevant mainly when you have freelance income, capital gains, rental income, interest income, or a large one-off receipt that wasn't subject to full TDS at source.

A Note on This Calculator's Scope

This tool zeroes out tax entirely once taxable income is ₹12 lakh or below (the new-regime rebate threshold) as a straightforward cutoff, without separately applying marginal relief for income just above that line — so a result very close to ₹12 lakh taxable income may differ slightly from an exact computation. It also assumes salaried/other income taxed under standard slabs; presumptive-taxation businesses and professionals have a different advance-tax due-date structure (a single installment by 15 March covers the full year) not modeled here.

Why Estimate Advance Tax Mid-Year at All

Advance tax exists because the government doesn't want to wait until year-end to collect tax on income that isn't already covered by TDS — freelance receipts, rental income, capital gains, or interest income that a bank or client didn't fully deduct tax on. Rather than a single lump-sum payment at filing time, you estimate your full-year tax liability early and pay it across the year in the cumulative checkpoints described above. This spreads the government's revenue collection across the year and, for you, avoids a large one-time cash outflow plus interest charges for underpayment.

The tricky part is that your income estimate at the start of the year is rarely your exact final number — a mid-year bonus, an unexpected consulting project, or a capital gain from selling an asset all change your liability after some installments are already due. That's why the checkpoints are cumulative rather than fixed: it gives you room to true up your estimate at each due date rather than locking in a wrong number from June for the whole year.

Interest for Shortfall: Sections 234B and 234C

Two distinct interest provisions apply to advance tax shortfalls. Section 234C charges interest for missing a specific quarterly checkpoint — even if you eventually pay the full amount by 15 March, falling short of the 15%, 45%, 75% cumulative benchmarks along the way attracts interest for that period of shortfall. Section 234B is separate and applies if your total advance tax paid by 31 March falls short of 90% of your actual final tax liability for the year — a broader check on whether you paid enough advance tax overall, not just whether you hit each quarterly checkpoint. Both can apply in the same year for different reasons, so paying the right amount by 15 March doesn't necessarily mean you've avoided interest for having under-paid an earlier checkpoint.

Common Situations That Trigger Advance Tax

An Exemption for Senior Citizens Without Business Income

Resident senior citizens (individuals aged 60 or above) who don't have income from business or profession are generally exempt from the advance tax payment requirement altogether, even if their total tax liability would otherwise exceed the ₹10,000 threshold — they can pay their full tax at the time of filing their return instead of in installments through the year. This exemption is specifically tied to not having business or professional income; a senior citizen who also runs a business or practices a profession does not get this exemption and follows the normal advance tax schedule like any other taxpayer. If you're a senior citizen relying on this exemption, confirm your income sources genuinely fall outside business/professional income before skipping installments.

How Advance Tax Is Actually Paid

Advance tax is paid online through the tax department's e-payment facility using the relevant challan for income tax payments, selecting "Advance Tax" as the payment type for the correct assessment year. The payment is typically reflected against your PAN within a day or two and shows up when your return is later processed against Form 26AS / the Annual Information Statement, so keeping the payment receipt (the BSR code, challan number, and date) is worth doing until your return for that year is filed and processed.

Since challan formats, portal names, and processes are periodically updated, check the current payment process on the official tax portal at the time you pay rather than following instructions from an older source, and always verify the payment reflects correctly under the right assessment year before assuming it's been credited properly.

Reconciling Advance Tax Against Your Final Return

Advance tax paid through the year is just one input into your final tax computation — it sits alongside TDS/TCS already deducted by others, and any self-assessment tax you pay at the time of filing to cover whatever gap remains between your total liability and what's already been paid. When you file, the return reconciles all three: total tax due for the year, minus TDS/TCS credit, minus advance tax already paid, equals either a final self-assessment payment you still owe or a refund due to you. Keeping a running note of each advance tax instalment you've paid through the year, rather than trying to reconstruct it from bank statements at filing time, makes this reconciliation considerably easier and reduces the chance of a mismatch between what you believe you paid and what the tax department's records show against your PAN.

Advance Tax on Income That Arrives Late in the Year

A common concern is what happens when significant income — a large consulting fee, a bonus, or a capital gain — arrives after one or more advance tax due dates have already passed for the year. The general expectation is that such income is factored into your estimate from the very next instalment onward, rather than requiring you to somehow retroactively pay tax against an earlier due date you couldn't have known about at the time. This is precisely why the checkpoints are cumulative rather than fixed equal shares — it gives you room to true up a growing income estimate at each remaining due date. If a large receipt arrives very close to 15 March (the final instalment), the practical result is that a large share of that year's tax on it effectively falls due almost immediately, so it's worth setting aside funds for it rather than assuming the full amount can wait until return-filing time.