Advance Tax & Section 234B/234C Penal Interest Engine
Determine mandatory quarterly installment schedules (15%, 45%, 75%, 100%) and compute accurate 1% monthly penal interest under Sections 234A, 234B, and 234C for delays or shortfalls.
Assessee Category & Assessment Year
Assessed Tax LiabilityNet: ₹3,00,000
Actual Installment Payments Made
Enter actual tax paid on or before each quarterly statutory deadline.
Post March 31 & Section 234A Delay
Total Outstanding: ₹1,200
Includes ₹1,200 in statutory penal interest under Section 234B/C.
Total Penal Interest
₹1,200
Sec 234A + 234B + 234C
Quarterly Installments & Section 234C Deferment Interest
1% per month penal interest on shortfalls against statutory milestones.
| Quarter & Due Date | Statutory % | Target Amount | Cumulative Paid | Shortfall | Sec 234C Interest |
|---|---|---|---|---|---|
| Q1 (15th June) | 15% (12% safe) | ₹45,000 | ₹30,000 | ₹15,000 | ₹450 |
| Q2 (15th September) | 45% (36% safe) | ₹1,35,000 | ₹1,10,000 | ₹0 | ₹0 |
| Q3 (15th December) | 75% | ₹2,25,000 | ₹2,00,000 | ₹25,000 | ₹750 |
| Q4 (15th March) | 100% | ₹3,00,000 | ₹3,00,000 | ₹0 | ₹0 |
Section 234B Default
Compliant1% per month from April 1 if total advance tax paid by March 31 is less than 90% of assessed tax.
Section 234A ITR Delay
On-Time1% per month on self-assessment tax for delay in furnishing the return of income past due date.
Section 211 mandates quarterly installments for all taxpayers whose estimated tax liability exceeds ₹10,000 per financial year. Timely challan payments prevent compounding 1% monthly interest.