Advance Tax Calculator
FY 2026-27 installment schedule with 234B/234C interest
Free advance tax calculator. See the Jun, Sep, Dec, and Mar installment amounts for FY 2026-27 and the interest payable under Section 234B and 234C if installments are missed.
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What is an Advance Tax Calculator?
Advance tax is income tax paid in installments during the financial year rather than in a lump sum at year-end. Anyone with a tax liability exceeding ₹10,000 in a year must pay advance tax — this includes salaried employees with income beyond salary, freelancers, professionals, business owners, and investors with capital gains.
For FY 2026-27, the schedule is: 15% by June 15, 45% by September 15, 75% by December 15, and 100% by March 15. These are cumulative percentages of your estimated net tax (total tax minus TDS already deducted). Failing to pay each installment on time attracts interest under Section 234C at 1% per month on the shortfall for 3 months per installment.
Section 234B is a separate interest charge that applies if your total advance tax paid is less than 90% of your assessed tax. This interest runs from April 1 (the start of the assessment year) until the date of self-assessment tax payment, at 1% per month. Both 234B and 234C can add up quickly — this calculator shows the worst-case interest exposure if you pay nothing.
Why use this Advance Tax Calculator
Built for Indians, by Indians. Every number, every formula, every slab — tuned to FY 2026-27 reality.
4-installment schedule
Shows exact rupee amounts for each of the 4 FY 2026-27 advance tax due dates.
TDS offset
Enter TDS already deducted to see your net advance tax liability (Total Tax − TDS).
234B + 234C interest
Computes estimated interest under both sections so you know the cost of missing payments.
100% private
All calculations run in-browser. Your tax figures stay on your device.
Using the Advance Tax Calculator in 4 steps
No onboarding, no signup. Answer three fields and the numbers update live.
Enter total estimated tax
Your total income tax liability for the full FY 2026-27 — including all income heads (salary, business, capital gains, other sources).
Enter TDS already deducted
Total TDS your employer, clients, or bank has already deducted year-to-date. The net advance tax is Total Tax − TDS.
Review installment amounts
Four cards show cumulative amounts due at each date. These are the minimum amounts you must have paid by each date to avoid 234C interest.
Check interest exposure
The 234B and 234C figures show interest if you skip advance tax entirely — your motivation to pay on time.
Tips to get the most out of it
Estimate your tax early (April–May) by projecting all income sources for the year. Capital gains, freelance income, and rental income are often under-estimated, causing large 234C penalties in March.
Even if you overpay, the excess is refunded. It is always safer to slightly overpay each installment than to underpay — refunds carry 6% interest (Section 244A), which partially offsets the overpayment.
For capital gains: if a large capital gain occurs after September 15, you can pay the entire tax by March 15 without 234C penalty for earlier installments (special provision under proviso to Section 234C).
Freelancers and consultants: the 10% TDS your clients deduct (194J) counts as advance tax credit. If TDS covers 90%+ of your liability, you have no 234B exposure — only 234C applies if installments are missed.
Use Self Assessment Tax challan (ITNS 280) on the Income Tax e-filing portal to pay advance tax. Select "Advance Tax" (type 100), not "Self-Assessment Tax" (300).
Real-world scenarios
How Indians actually use this calculator — concrete inputs, concrete outcomes.
Freelancer with ₹2L annual tax, ₹60K TDS
Net advance tax: ₹1.4L. Jun: ₹21K, Sep: ₹63K, Dec: ₹1.05L, Mar: ₹1.4L. Missing all installments → ~₹5,600 in 234C interest + ~₹4,200 in 234B = ₹9,800 interest.
Salaried investor with LTCG ₹5L (30% slab)
Total tax ≈ ₹1L (after rebates). TDS from employer ≈ ₹80K. Net advance: ₹20K. Small amount — easy to pay by June 15 to avoid any interest.
Business owner ₹10L tax, ₹2L TDS
Net advance: ₹8L. Jun: ₹1.2L, Sep: ₹3.6L, Dec: ₹6L, Mar: ₹8L. Missing Sep installment alone → 234C of ~₹36K for 3 months.
Frequently Asked Questions
Still have a question? Our team replies within a business day.
Any individual, company, or entity with a total tax liability exceeding ₹10,000 in the year — after deducting TDS. This includes salaried employees with non-salary income (capital gains, rent, freelancing), business owners, and senior citizens with business income.
234B is for overall under-payment — if your total advance tax paid is less than 90% of assessed tax. 234C is for delayed installments — missing the Jun/Sep/Dec/Mar due dates. You can have both, neither, or either one.
Yes. Senior citizens aged 75 or above who have only pension and FD interest income are exempt from advance tax under Section 194P. All other senior citizens must pay advance tax if their tax liability exceeds ₹10,000.
Pay self-assessment tax immediately — the sooner the better. 234B interest continues to run until you pay. File ITR by July 31 and pay self-assessment tax before or during filing to stop interest accrual.
Yes. For casual or non-recurring capital gains that arise during the year, you can increase the March 15 installment to cover them without 234C applying to earlier installments — as long as the earlier installments were paid on the non-gain income.
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