Employment Tribunal Deadline Calculator

Calculate the 3-month minus 1 day deadline for bringing an employment tribunal claim, including ACAS Early Conciliation extension adjustments.

Important: This tool provides general guidance only and does not constitute legal advice. Limitation periods and legal deadlines are strictly enforced — missing them can permanently bar your claim. Always verify key dates with a qualified solicitor before relying on this output. Laws and court fee scales change; confirm current figures on the relevant official government website.

When to use this tool

Use as soon as you think you have a claim — for unfair dismissal, discrimination, wrongful dismissal, or other employment claims. Most claims must be received by the tribunal within 3 months less 1 day of the act complained of. ACAS Early Conciliation is mandatory before you can issue a claim and pauses the clock.

Employment Tribunal Deadline Calculator

Effective Date of Termination (EDT) or date of act complained of

For unfair dismissal, this is usually your last day of employment. For discrimination, it is the date of the discriminatory act.

ACAS Early Conciliation (optional)

If you went through ACAS Early Conciliation, the clock is paused during the conciliation period. Enter the dates from your ACAS certificate (EC Number) to get an adjusted deadline.

ACAS certificate — start date (Day A)

ACAS certificate — end date (Day B)

Related Guides

Official Resources

Employment Tribunal — How to make a claim →ACAS Early Conciliation →Employment Tribunals Rules of Procedure 2013 →