Type your liability and what you paid by each instalment date. We'll show you exactly what 234B + 234C interest you'd owe at filing — and how much paying on time would save.
1Your tax for the year
₹
≤ ₹75L: 50% = profit
₹
Tax for FY 2026-27₹0
Less: TDS–50,000
Assessed tax (AT)₹0
Your TDS already covers your liability. You'll get a refund of ₹50,000.
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What’s the difference between Section 234B and 234C?
Both penalise missed advance tax, but they cover different periods. 234C is per-instalment interest for the 3 months immediately following a missed quarterly date (only 1 month for Q4). 234B is interest from 1 April (after FY-end) until you actually pay — applies only if you paid less than 90% of your assessed tax by 31 March. You can owe both at once: 234C for each quarter you missed plus 234B for the balance you carry past FY-end.
Do 44ADA freelancers pay 234C on each quarter?
No. Section 211(b) gives 44ADA and 44AD assessees a single instalment due 15 March, not four. So 234C only applies if you paid less than 100% of your assessed tax by 15 March — and only 1 month of interest, not 3. This is the “presumptive simplification” most freelancer tax tools miss.
What’s the 80% tolerance rule on Q1 and Q2?
For non-44ADA assessees, Q1 (15 June) requires 15% paid and Q2 (15 September) requires 45% paid. But 234C only kicks in if you paid less than 12% (80% of 15%) by Q1 or less than 36% (80% of 45%) by Q2. So if you paid exactly 12% by 15 June, you skip the Q1 penalty even though the official target was 15%. Q3 and Q4 have no such tolerance — thresholds are exact at 75% and 100%.
How is 234B different from the late-filing fee under Section 234F?
They’re separate. 234B is interest (1% per month) on unpaid advance tax — keeps accruing as long as the tax is unpaid. 234F is a flat fee for filing your ITR late: ₹5,000 if filed after the due date (₹1,000 if total income ≤ ₹5L). You can owe both if you both underpaid advance tax AND filed late.
Can I avoid 234C if I file my return by 31 March?
No. 234C is determined by what you paid by each instalment date — not when you file. If you paid zero advance tax through the year and then dump it all in your ITR filed by 31 March, you’ve still missed every instalment date and still owe 234C on each shortfall. The only escape is paying advance tax on time through the year.
Approximations per the standard 1% per month formula. 234C runs from each instalment due date until the next one is paid; 234B runs from 1 April of post-FY year until you pay. 44ADA assessees have ONE instalment due 15 March (§ 211(b)). Actual numbers may differ by a few percent — your CA will compute the exact figure at ITR filing.
