Advance Tax & Section 234A/B/C Calculator

Instalment schedules, 15 March presumptive rules, and interest liabilities.

Sec 44AD / 44ADA (100% by 15 March)

Client / Assessee Name

PAN

Total Estimated Tax Liability (₹)

Less: TDS / TCS Credit (₹)

Capital Gains / Dividend / Lottery Relief (1st Proviso to Sec 234C(1))

Under the First Proviso to Section 234C(1), no interest is levied for shortfall in earlier instalments if the income could not be anticipated in advance (Capital Gains, Dividend, Lottery, New Business), provided the tax is paid in subsequent instalments.

Actual Advance Tax Paid (Challan ITNS 280)

Paid by 15 June (₹)

Paid by 15 Sept (₹)

Paid by 15 Dec (₹)

Paid by 15 March (₹)

Advance Tax & Section 234 Interest Computation

Assessee: Ramesh Enterprises | PAN: ABCDE1234F | FY: 2026-27

Assessed Tax: ₹2,50,000

Section 234C Quarterly Instalment Analysis

Instalment Due Date	Applicable Base (₹)	Target Due	Cumulative Paid	Shortfall	Rate & Period	234C Interest (₹)
1st Instalment (15 June)	₹2,50,000	15% (Safe: 12%) (₹37,500)	₹30,000	Nil	1% × 3 mo	₹0
2nd Instalment (15 Sept)	₹2,50,000	45% (Safe: 36%) (₹1,12,500)	₹1,00,000	Nil	1% × 3 mo	₹0
3rd Instalment (15 Dec)	₹2,50,000	75% (₹1,87,500)	₹1,80,000	₹7,500	1% × 3 mo	₹225
4th Instalment (15 March)	₹2,50,000	100% (₹2,50,000)	₹2,40,000	₹10,000	1% × 1 mo	₹100

Statutory Provision	Condition / Threshold	Interest Liability (₹)
Section 234C Interest	Deferment / Shortfall in quarterly instalments (1% per month)	₹325
Section 234B Interest	Advance tax paid is less than 90% of assessed tax (1% p.m. from 1 Apr)	₹0
Section 234A Interest	Delay in furnishing return beyond statutory due date	₹0
Total Section 234 Interest Payable		₹325
Net Balance Tax & Interest Payable		₹10,325

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Statutory & Compliance Disclaimer

This tool is an automated calculation, formatting, and compliance aid provided for informational purposes only. It does not constitute formal legal, taxation, or professional auditing advice. Calculations, citations, and draft documents must be independently verified by a qualified Chartered Accountant (CA) or Company Secretary (CS) against statutory provisions and applicable ICAI/ICSI guidelines before execution or certification.