How we work
Every rate in our calculators comes from an official source, and every result shows its workings.
Our rules
We take every rate from GOV.UK, HMRC or the law itself on legislation.gov.uk. We do not type in a figure from memory or copy one from another website. Each figure is recorded with where it came from and the date we last checked it, and the site will not build if one is missing. You can see them all.
Every result has a "Show the workings" button with each step of the sum, the rules it assumes, and links to the sources.
Our calculators give information, not advice. They work from what you enter and cannot know everything about your job or your contract.
How we test the sums
The sums are written once and tested before every change goes live. Where GOV.UK or HMRC publish their own answers, we test against those:
- redundancy pay against GOV.UK's redundancy calculator, for people of different ages, service and pay
- holiday against GOV.UK's holiday calculator, for full years, starters, leavers and people who start and leave in the same year
- Statutory Sick Pay against HMRC's table of amounts and its worked examples
Where there is a rule about rounding, we follow it. Holiday for starters is rounded up to the next half or whole day as the Working Time Regulations say, and sick pay is rounded up to the next penny as HMRC's table does.
When rates change
Most statutory rates change in April. When the government announces new rates, we add them beside the old ones with the date they start, so the calculators switch over on the right day and earlier rates stay on record.
Corrections
We have not had to correct any figure yet. When we do, we will list it here with the date. If you spot a mistake, email max@youellsystems.co.uk.