About bizdaycalc

Who writes and reviews our business-day guides, and why you can trust the dates we give you.

Edited by Marcus Bennett

Marcus Bennett is the editor of bizdaycalc and an operations & SLA workflow specialist. He has spent his career in operations, service-delivery and workflow roles, where SLA wording, business-day counting and turnaround tracking were part of everyday work.

Marcus set the editorial standard for this site: every guide must explain a business-day or deadline rule in plain English, show a worked example with real dates, and link back to an official source — GOV.UK bank holidays, Acas working-time guidance, or the legislation behind a complaint or payment deadline — so you can verify the rule yourself.

Read more about Marcus Bennett or see how we review and update content.

Primary sources, dated reviews, worked examples

Primary sources first

Guides cite the official source behind each rule — GOV.UK bank holidays, Acas guidance, or the relevant legislation — so you can check the answer yourself.

Dated reviews

Every guide carries a “Last reviewed” date, and content is re-checked when official holiday or guidance dates change.

Worked examples

Rules are tested against real dates, including weekends and UK bank holidays, so the written explanation matches what the calculator returns.

Practical date tools

bizdaycalc focuses on straightforward tools that solve everyday date problems without making you fight a spreadsheet first.

The current tools include a Business Day Calculator for counting working days between dates and a Complaint Deadline Tracker for reviewing fixed complaint-handling milestones.

The aim is simple: practical outputs, clean screens, and tools that are useful immediately.

Important notes

These tools are provided for general informational purposes. They are designed to help with practical calculations, but users should always review results in the context of their own needs and circumstances.

Where public holidays are involved, calculations depend on the holiday set and options chosen inside the tool.