Dates through the year
The 13 rows run in date order. Advance tax is cumulative: 15% by 15 June 2026, 45% by 15 September, 75% by 15 December, and 100% by 15 March 2027. Those percentages are Section 211. Section 208 is the liability to pay advance tax. The October AIS check is before the December instalment. Form 16 follows on 15 June 2027. If PAN is still not linked to Aadhaar, that due date was 30 June 2023. The same four advance-tax dates are on the tax calendar.
| Month | Action Item | Section | Deadline |
|---|---|---|---|
| Apr-May | Choose regime (Old vs New) via employer declaration | 115BAC | Before first payroll |
| Apr-May | Submit investment proof for 80C/80D/NPS to employer | 80C, 80D, 80CCD | Employer deadline (usually Jun) |
| 15 Jun | 1st advance tax instalment (at least 15% of estimated tax) | 211 | 15 June 2026 |
| Jul-Aug | Verify TDS deducted matches offer letter terms | 192 | Monthly |
| 15 Sep | 2nd advance tax instalment (at least 45% of estimated tax) | 211 | 15 September 2026 |
| Oct-Nov | Review Form 26AS / AIS for TDS credit accuracy | - | Before 15 December 2026 |
| 15 Dec | 3rd advance tax instalment (at least 75% of estimated tax) | 211 | 15 December 2026 |
| Jan-Feb | Link PAN-Aadhaar if not already linked | - | Due date was 30 June 2023 |
| 15 Mar | 4th advance tax instalment (at least 100% of estimated tax) | 211 | 15 March 2027 |
| 31 Mar | Use the 80C limit (₹1.5 lakh) | 80C | 31 March 2027 |
| 31 Mar | Pay remaining health insurance premium for 80D | 80D | 31 March 2027 |
| 15 Jun 2027 | Receive Form 16 from employer | 203 | By 15 June 2027 |
| Jul (FY+1) | Reconcile Form 16 with 26AS/AIS and file ITR | 139(1) | 31 July 2027 |