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Annual Leave Carryover Deadline Calculator

Based on the default pattern below, a typical deadline is June 2028. Adjust the inputs for your exact figure.

Carryover deadline

June 2028

How it's worked out

December 2026 leave year end + 18 months = June 2028

Audit note

The 18-month statutory deadline applies to Reg 13 carryover from long-term sickness or family leave specifically, and runs from the END of the leave year it accrued in — not from the date it was accrued. Contractual deadlines can be shorter, but can never override the statutory 18-month floor for protected leave.

Stop tracking this by hand

Carryover only stays accurate if the balance behind it is accurate. Tempry tracks every day of accrued, taken and carried-over leave automatically, so nobody has to work out a carryover cap or a forfeiture deadline by hand again.

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Different scenario? Try the full holiday carryover calculator

How this calculation works

Carried-over leave isn't open-ended — work out the exact month and year it must be used by, whether it's protected sick-leave carryover (18 months) or your employer's own policy deadline.

Worked example

December 2026 leave year end + 18 months = June 2028

Frequently asked questions

How do I work out my holiday carryover deadline?
Take the end of your leave year and add your carryover window — 18 months for statutory-protected leave, or whatever shorter period your employer's contractual policy sets.
Does every employer use the same carryover window?
No — 18 months is the statutory ceiling for protected leave (long-term sickness, maternity, etc.); a general contractual carryover policy can set a shorter window, such as the end of Q1 of the following year.
What if my leave year doesn't run January to December?
Enter your actual leave-year-end month and year — many UK employers run an April-to-March leave year rather than calendar year, which shifts the deadline accordingly.