About Working Days Calculator UK

This site exists to do one thing well: calculate working days in the UK. We add and subtract business days, count working days between dates, and answer common questions about UK bank holidays — including the regional differences between England & Wales, Scotland, and Northern Ireland.

Why we built this

Most generalist date calculators are built for US audiences. They either ignore UK bank holidays altogether or treat the UK as a single calendar — which is wrong. Scotland has 2nd January and St Andrew’s Day. Northern Ireland adds St Patrick’s Day and Battle of the Boyne. Easter Monday is a holiday in two of the three regions, not all three. Anyone tracking contracts, notice periods, court deadlines, or payroll in the UK needs a calculator that gets this right.

Where the data comes from

Bank holiday dates are taken directly from the official gov.uk bank holiday feed. That includes substitute days (when a holiday falls at a weekend and is observed on the next Monday or Tuesday). The data is refreshed regularly; if you spot a discrepancy, please let us know.

What we don’t do

We are not a substitute for legal, financial, or tax advice. Working day calculations are correct for the bank holiday calendars published by gov.uk, but specific contracts may use a different definition of “business day” or apply different rules when a deadline falls at a weekend. Always check the document that governs your obligation.

Get in touch

Spot a bug, want a feature, or just want to say hello? Drop us a line via the contact page.