Matt W. is a New Zealand legal professional who independently publishes and maintains Working Day Calculator UK. The work focuses on the calculator's date-counting mechanics, checking cited official sources, and correcting reported errors. The articles provide general information and are not UK legal, tax, accounting, or other professional advice.
The first version was built for New Zealand, after finding that the available tools were “days between two dates” calculators — the easy direction, and the same in every country. The useful direction is the other one: given a trigger date and a set of rules, when does the deadline fall?
That question needs local rules, and New Zealand’s regional anniversary days, Mondayisation, and summer shutdown period don’t survive being generalised. The same gap turned out to exist in other common-law jurisdictions, so each country tool is built around its own rules rather than sharing one international default.
Guides to UK date-counting mechanics, bank-holiday calendars, and official sources. Readers remain responsible for choosing the applicable rule and trigger date.
Pre-May Section 21 notices can no longer start a new claim. Proceedings issued by 31 July 2026 may continue through the court process.
Most current claims have a calendar-month limit. Acas early conciliation changes the calculation, and a six-month limit is scheduled from 1 October 2026.
Inheritance Tax is due at the end of the sixth month after the month of death, which is a fixed calendar date that never rolls forward.
The 28-day decision period runs from the referral, not the notice, and both periods are counted in calendar days rather than working days.
The 2025/26 filing and payment dates, the two payment-on-account exceptions, and the Making Tax Digital quarters that start from April 2026.
Start with the application category and valid-receipt date. England's ordinary determination periods are calendar weeks, but a written extension can set a new date.
Check the filing date recorded for the company. It is a calendar date, even on a Sunday or bank holiday; working days help only with planning before it.
Under SCS 6.8.2, exclude the day the notice is given and count ten working days. First confirm the contract terms and effective notice date.
The SCTS 2026 calendar gives each court or office its own closure dates. Select the correct location before relying on a Scottish court calculation.
Identify the effective start or event date first. Then apply CPR 2.8's clear-days rule, five-day threshold and court-office rollover.
There are 253 working days in England and Wales in 2026 on a Monday-to-Friday calendar. See the eight bank holidays and monthly totals.
Scotland and Northern Ireland each have 251 working days in 2026, but their bank holidays fall on different dates and can change a deadline.