90 Day Probation Period Calculator
without the guesswork.
Probation Period End Date Calculator — Apply the exact probation length, anniversary convention and confirmed extensions from an employment or appointment record. Uses a focused calculator with visible assumptions. Inputs stay in your browser.
Probation length, creditable service, extensions and anniversary conventions are not universal. CalcSpan applies only the rule entered from the controlling employment record.
Context matters.
- U.S. private-sector employment has no single federal probation-period formula; the signed offer, policy, collective agreement and applicable law control.
- Federal appointment examples can use anniversary-style completion rules, but the exact appointment record and agency HR determination still control.
- A calculated date does not determine employment rights, termination authority, benefits or appeal rights.
Sources & scope
This page shows the source trail, jurisdiction and review date alongside the result. Always confirm time-sensitive rules with the linked authority.
What to know before using the result.
Is there a universal probation-period length?
No. The signed offer, handbook, collective agreement, appointment record and applicable law can set different lengths and consequences. CalcSpan applies only the exact period entered.
Why can the last day be before the anniversary?
Some appointment and employment records treat the period as completed on the anniversary, making the preceding date the last day in probation. Other records say the employee remains in probation through the anniversary, so the controlling wording must be selected.
Can absence or leave extend probation?
It can under some policies or appointment rules, but not universally. Add only noncreditable or extension days that HR or the controlling record confirms for this employee.