Advance Tax Calculator India FY 2024-25 — Installment Schedule

Last updated: Jul 22, 2026 | Reviewed by Calkulator Team | 2 min read

Tax

Calculate advance tax instalments to avoid interest penalties

If your tax liability exceeds ₹10,000 in a year, you must pay advance tax in quarterly instalments — 15% by June, 45% by September, 75% by December, and 100% by March. Missing deadlines attracts interest under Section 234B and 234C.

Set calendar reminders for June 15, Sep 15, Dec 15, and Mar 15 — advance tax deadlines.

Income Sources (Annual Estimate)

Salary Income (₹)

₹

Business / Profession Income (₹)

₹

Capital Gains (₹)

₹

Other Income (FD, Rent, etc.) (₹)

₹

TDS Already Deducted (₹)

₹

From salary slip / Form 26AS

Advance Tax Rules

Due if tax liability > ₹10,000 after TDS

15 Jun: 15% | 15 Sep: 45%

15 Dec: 75% | 15 Mar: 100%

234B: Interest if <90% paid by year-end

Total Tax Liability

₹—

Enter at least one income source

Net Advance Tax Due

₹—

After TDS deduction

Total Income

₹—

All sources combined

Taxable Income

₹—

After ₹75K std. deduction

Tax Before TDS

₹—

Incl. 4% cess

TDS Already Paid

₹—

From Form 26AS

Quarterly Installment Schedule (FY 2024-25)

Due Date	Cumulative %	Cumulative Amt	This Installment

Interest u/s 234B (est.)

—

Interest u/s 234C (est.)

—

Live Result Illustration

Visual summary — updates instantly as you enter values above

LIVE

Real-Life Guide to Using the Advance Tax Calculator

Quarterly advance tax liability. Use the examples and checks below to turn the number into a practical decision.

When this calculator is useful

Self-employed professionals, freelancers, and taxpayers with significant non-salary income (capital gains, rent, interest) use this every quarter to check how much tax to deposit before each due date to avoid interest penalties.

For most people, the best way to use the Advance Tax Calculator is to try the real case first, then change one input at a time. That makes the trade-off visible. For example, with a loan calculator you can change tenure while keeping the same rate; with an investment calculator you can change return assumption while keeping the same monthly contribution; with a health, education or measurement calculator you can check how much one input changes the final category.

The result should answer a practical question: Can I afford this? How much should I save? Is this score enough? Is this measurement within range? What is the safer or cheaper option? If the output does not answer the decision clearly, adjust the inputs until the scenario matches your real situation.

Real-Life Example

Freelance consultant's Q2 installment: A freelance consultant estimates their total tax liability for the year at ₹1,20,000 and wants to know the correct amount to deposit by the mid-September due date.

1By the mid-September installment, 45% of the estimated annual liability should be paid cumulatively, which works out to ₹54,000. If ₹18,000 was already paid in the June installment, the consultant needs to deposit the remaining ₹36,000 by the September due date.

2Now change one input, such as rate, time, quantity, unit or score, and compare the new result with the first one.

Advance tax is a cumulative running total against fixed percentage milestones, not four equal one-fourth payments spread across the year.

Practical Advice

Use the Advance Tax Calculator as a planning tool, not just a number generator. Write down the inputs you used, because the final answer is meaningful only when you remember the assumptions behind it.

If the decision affects money, health, tax, safety, academics or legal compliance, keep a second check ready. That second check may be a bank quote, payslip, official rule, prescription, site measurement, mark sheet or invoice.

Common Mistakes

Waiting until the fourth installment to pay the entire year's tax, which triggers interest under Section 234C for underpayment in the earlier quarters even if the full amount is paid before 31 March
Forgetting that advance tax applies once total tax liability for the year exceeds ₹10,000, a threshold many freelancers overlook in their first year of crossing it
Not revising the estimate after a large capital gain or bonus mid-year, leading to a big shortfall in the next due installment
Applying the wrong cumulative percentage at each due date — the requirement is roughly 15% by mid-June, 45% by mid-September, 75% by mid-December, and 100% by mid-March of the year's estimated tax, not equal quarterly slices
Ignoring TDS already deducted by clients or employers when computing the remaining advance tax due, resulting in double payment

How to Interpret Results

The output tells you how much to deposit by the current due date to stay compliant with the cumulative percentage schedule — pay at least that much through the government portal before the deadline to avoid Section 234B/234C interest.

A good interpretation looks at both the main result and the supporting values. If a page shows totals, ratios, categories, schedules or warnings, read those together instead of focusing only on the biggest number.

Advance Tax Calculator FAQs

Useful answers for interpreting the output, avoiding mistakes and using the result responsibly.

What exactly does this calculator compute?

It estimates your total tax liability for the year based on income you enter, then splits that liability across the four statutory advance tax due dates according to the cumulative percentage schedule prescribed by the Income Tax Act, showing how much you should have paid by each date.

Who actually needs to pay advance tax?

Any taxpayer — salaried, self-employed, or a business — whose total tax liability for the year after TDS is expected to exceed ₹10,000 is required to pay advance tax. Salaried individuals often don't need to worry about it separately because employer TDS covers most of the liability, but freelancers, consultants, and those with significant capital gains or rental income usually do.

What happens if I miss an advance tax due date?

Missing or underpaying an installment attracts interest under Section 234C, calculated on the shortfall for that specific quarter at a prescribed monthly rate. If your total advance tax paid by year-end falls short of 90% of the actual liability, additional interest under Section 234B also applies from April of the following year.

How is advance tax different from self-assessment tax?

Advance tax is paid during the financial year in installments based on estimated income, while self-assessment tax is any balance tax paid after the year ends, at the time of filing the return, once actual final income is known. Both use the same tax payment challan but are recorded under different payment codes.

My income is unpredictable — how do I estimate it for this calculator?

Use your best reasonable estimate based on income earned so far plus expected income for the rest of the year, and revise the estimate at each subsequent due date rather than trying to get it exactly right in June. The law allows you to reduce or increase later installments as your estimate becomes clearer.

Does the calculator subtract TDS already deducted by my clients?

It should — advance tax due is based on tax liability net of TDS credit already available for the period, since paying full advance tax on top of TDS already withheld would mean overpaying. Enter TDS already deducted so far to get an accurate remaining amount.

Can senior citizens skip advance tax?

Senior citizens (60 years or above) who do not have any income from business or profession are exempt from paying advance tax and can pay their entire tax liability as self-assessment tax at the time of filing. This exemption does not apply to senior citizens running a business or profession.

I paid more advance tax than my final liability — what happens?

Any excess advance tax paid is treated as a refund when you file your ITR, and the department typically pays interest under Section 244A on the refund amount for the period it was held, provided the refund exceeds a small threshold percentage of your total tax.

What is Advance Tax?

Advance tax is income tax paid in advance — in four quarterly installments — rather than all at once at year-end. It is mandatory if your total tax liability (after TDS) exceeds ₹10,000 in a financial year. Non-payment or underpayment attracts interest under Sections 234B and 234C.

The installment schedule: 15% by 15 June, 45% by 15 September, 75% by 15 December, and 100% by 15 March. Senior citizens with only pension/interest income (no business income) are exempt from advance tax.

Example Calculation

Scenario: Salary ₹12L, business ₹5L, TDS deducted ₹80,000

1Total income = ₹17L, taxable = ₹17L − ₹75K = ₹16.25L

2Tax + cess ≈ ₹3,37,500 | Net after TDS = ₹2,57,500

31st installment (15 Jun) = 15% × ₹2,57,500 = ₹38,625

✓ Must pay in 4 installments to avoid 234B/234C interest

Frequently Asked Questions

Advance tax and quarterly payments explained

Who needs to pay advance tax?

Any taxpayer whose estimated tax liability for the year exceeds ₹10,000 after TDS must pay advance tax. This includes salaried employees with additional income (interest, capital gains, rental income), freelancers, business owners, and investors. Senior citizens (60+) with only pension or interest income (no business income) are exempt from advance tax.

What is the interest penalty for not paying advance tax?

Section 234B: 1% per month simple interest if you pay less than 90% of total tax by 31 March. Section 234C: 1% per month for shortfall in quarterly installments — if you pay less than 15% by 15 Jun, less than 45% by 15 Sep, or less than 75% by 15 Dec. Both interest charges are in addition to the tax amount and can significantly increase your tax burden.

How is advance tax calculated for capital gains?

Capital gains arising before 15 September must be included in the 2nd installment; those before 15 December in the 3rd installment. This calculation is based on New Regime tax rates in this calculator. Note: STCG from equity is taxed at 20% flat, LTCG from equity above ₹1.25L at 12.5%. These may require separate calculation if you have significant capital gains.

Advance Tax Calculator