Interest under Sections 234A, 234B and 234C is not a penalty you negotiate after filing. It is a mechanical cost that appears when return filing, advance tax or instalment discipline fails.
| Section | Broad trigger | Control |
|---|---|---|
| 234A | Delay in filing the return where tax is payable. | File before due date and pay remaining tax before filing. |
| 234B | Non-payment or short-payment of advance tax against assessed tax. | Estimate income and credits before March. |
| 234C | Deferment/shortfall in advance-tax instalments. | Pay instalments according to the prescribed schedule. |
| 234D | Refund-related interest adjustment in specified cases. | Reconcile refund history and demand details. |
The Income Tax Department provides interest and fees guidance and a public calculator for interest under Sections 234A/234B/234C/234D. Finance teams should use it as a reasonableness check but still preserve the underlying computation.
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Official guidance says 234A applies when the income-tax return is furnished after the due date or not furnished, where tax remains payable.
It relates to non-payment or short-payment of advance tax.
Track advance-tax instalments during the year and avoid deferring tax payment until year-end.