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Maternity Leave Notice Deadline Calculator

Based on the default pattern below, a typical date is 29 November 2026. Adjust the inputs for your exact figure.

Key date

29 November 2026

How it's worked out

14 March 2027, 105 days before = 29 November 2026

Audit note

This is a leave-notice or leave-window deadline only, never a pay calculation. Dates are computed to the exact day from the anchor date you enter — always double-check against your own contract and current gov.uk guidance before relying on it for a legal deadline.

Stop tracking this by hand

Statutory leave dates and balances are easy to miscalculate by hand. Tempry tracks every type of leave against the right statutory rules automatically, so notice deadlines and remaining balances are never worked out on a calendar again.

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How this calculation works

Statutory leave notice periods are measured in exact days and weeks, not months. Enter the relevant date and get the precise deadline you need to hit.

Worked example

14 March 2027, 105 days before = 29 November 2026

Frequently asked questions

By when must I tell my employer I'm pregnant and taking maternity leave?
By the end of the 15th week before your Expected Week of Childbirth (EWC) — the calculator works out the exact date from your EWC's start date.
What do I need to tell my employer?
That you're pregnant, your expected date of birth, and the date you want your maternity leave to start.
Can I start maternity leave before the 15th-week deadline?
The notice is about when you must inform your employer, not when leave starts — your intended start date can't be earlier than the 11th week before your EWC.