About the Quarter Calculator
What is the Quarter Calculator?
In India, Q1 of the financial year is April–June, not January–March. This quarter calculator shows both the financial and the calendar quarter.
It also gives the next advance tax instalment date.
How to use the Quarter Calculator
- Date (sample: 22 Oct 2026)
- Financial Year Starts In (sample: April (India))
- Press Find Quarter (results also refresh as you type). The result card shows the Financial Year Quarter, along with Calendar quarter, Quarter runs, Days left in the quarter and Day of the quarter.
Formula used
FY quarter = floor((Month − FY start month) mod 12 ÷ 3) + 1
Worked example
These are the sample values already filled in the calculator above, and the result it returns for them:
| Input | Sample value |
|---|---|
| Date | 22 Oct 2026 |
| Financial Year Starts In | April (India) |
| Result | Value |
|---|---|
| Financial Year Quarter | Q3 of FY 2026-27 |
| Calendar quarter | Q4 2026 |
| Quarter runs | Thu, 1 Oct 2026 – Thu, 31 Dec 2026 |
| Days left in the quarter | 70 |
| Day of the quarter | 22 |
| Next advance tax due (India) | Tue, 15 Dec 2026 – 75% of the year's tax |
Indian financial-year quarters
| Quarter | Months (Indian FY) | Advance tax due | Cumulative share |
|---|---|---|---|
| Q1 | April – June | 15 June | 15% |
| Q2 | July – September | 15 September | 45% |
| Q3 | October – December | 15 December | 75% |
| Q4 | January – March | 15 March | 100% |
Tips for using the Quarter Calculator
- Quarterly TDS returns and GST QRMP filings follow the financial-year quarters.
- Pay advance tax by the due dates to avoid Section 234C interest.