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About this tool
Work out the exact confirmation date from a joining date, probation length, extensions and days of leave without pay.
This calculator turns a joining date and a probation length into the exact last day of probation and the date confirmation takes effect, then adjusts both for any extension granted and for days of leave without pay. It uses the standard reading of a period stated in months — a six-month probation from 1 April runs to 30 September, with confirmation effective 1 October — and clamps month-end arithmetic so 31 January plus one month is 28 February. Built for HR teams writing confirmation letters and for employees who want to know exactly when the notice period changes.
Open Probation Confirmation Date Calculator on AltFTool — it loads instantly in your browser.
Enter the values you already know.
Fine-tune the options to match your scenario.
Read the result and use it in your planning or reporting.
31 January plus one month resolves to 28 or 29 February, never spilling into March.
Shows both the original due date and the pushed-back date, with the gap in days.
Tells you whether the probation notice or the confirmed notice applies on any given date.
In most Indian appointment letters, yes — probation is meant to be a period of actual service, so unpaid absence extends it day for day. It is a contractual term rather than a statutory rule, so check the exact wording: some employers only count absences beyond a stated threshold, and a few do not extend at all.
Three and six months are the common lengths. Schedule I-A of the Industrial Employment (Standing Orders) Central Rules, 1946 sets three months for a workman provisionally employed against a permanent vacancy; for most office roles the Shops and Commercial Establishments Act of the state leaves the length to the contract, and twelve months is not unusual for senior positions.
It depends on the wording of your appointment letter. Where the letter says confirmation requires a written order, silence usually means probation continues; where it says the employee stands confirmed on completion, continuing to work past the end date is generally treated as confirmation. Indian courts have looked at conduct as well as the contract, so ask for written confirmation rather than relying on assumption.
No. Extensions normally have to be in writing, before the original end date, and for a stated further period — most appointment letters cap the total at 12 months. An extension issued after probation has already expired is on weak ground, which is why the tool flags the date the decision window opens.
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