Trust

How we check our facts

Taxmiser helps people make and save money legally. That only works if the numbers are right, so here's exactly how we check them.

1. 1. Official sources first

   Tax rates, thresholds and deadlines come from government and regulator pages, such as GOV.UK and HMRC, the IRS, the ATO, the CRA and Inland Revenue in New Zealand. News reports are only used for things governments don't publish, such as an investor's fund size, and we say so next to the figure.

2. 2. Every fact carries its source and date

   Each figure links to the page it came from and shows the date we last checked it. If we can't find an official source, we don't publish the figure.

3. 3. Nightly source checks

   Every night an automatic check opens the official pages we rely on and compares them with what Taxmiser shows. Some government sites block automatic checks, so those pages are marked for a person to open and check by hand.

4. 4. A person approves changes

   When a check finds a new rate or date, it is held as a draft until someone on the team compares it with the official page and approves it. Approved changes appear in the corrections log.

5. 5. Calculations are worked out from your figures

   Calculators use the published rules and work their results out again from the figures you entered each time you open them, so saved results don't go stale. Examples use made-up figures and are labelled as illustrations.

6. 6. We say what we don't know

   If a register or government site can't be checked, Taxmiser says the result is unknown. It never claims a business name is free, or a rule applies to you, without evidence.

7. 7. We fix mistakes in public

   When we get something wrong, or a source moves, we fix it and record the date and what changed on the corrections page.

Spotted a mistake? See the corrections log or email info@taxmiser.co.uk.