Section 211 of the Income Tax Act sets the advance tax installment schedule: 15% of total tax due by June 15, 45% by Sep 15, 75% by Dec 15, 100% by March 15. The calculator shows you each installment date, target amount, and what you've already paid (TDS or earlier installments). Miss a deadline and Section 234C interest at 1% per month applies on the shortfall.
When to use this
Use as a reference for: planning advance tax cash flows across the year, setting calendar reminders for each installment date, verifying what you've paid against the prescribed schedule, computing 234C interest if you've missed an installment.
Frequently Asked Questions
What if I pay more than required in an installment?
Overpayment is allowed and recommended - it reduces 234B / 234C interest risk. Any overpayment carries forward to next installment, and any final overpayment is refunded with interest at 0.5% per month under Section 244A when you file ITR.
Can I pay all advance tax in one shot?
Yes if you pay the full 100% by March 15. But you'll have paid 234C interest on the missed installments (Jun 15, Sep 15, Dec 15). Better to pay quarterly per the schedule and avoid interest entirely.
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