What changed, and when

If you worked something out before a change listed here, you can tell whether it’s affected. Entries are newest first. Data refreshes that only add the latest exchange rates or index values are recorded in the data files themselves; anything that changes a historical figure, a rate or a formula appears below.

1. October 8, 2026Calculators

   Inflation calculator: “Annual average” now uses the publisher’s own published annual averages (US BLS CPI-U, including the 2025 average of 321.943, which BLS calculated from the 11 months it published because October 2025 was never collected). Unpublished months and years still in progress show a clear message; nothing is interpolated. BLS: 2025 federal shutdown impact on the CPI

2. October 7, 2026Calculators

   First release of the universal calculators: compound interest, savings goal, loan, mortgage (with overpayments and a Canadian semi-annual compounding preset), inflation, currency converter, VAT/GST/sales tax, percentage, salary to hourly and the custom income tax bracket calculator. Each is tested against the worked examples in our specification.

3. October 7, 2026Data

   Currency conversion uses European Central Bank euro reference rates published as static files on this site. Inflation figures use official consumer price indexes from national statistics offices, each shown with its publisher, licence and latest observation. ECB euro foreign exchange reference rates

4. October 7, 2026Countries

   Take-home pay calculators for the United States, United Kingdom, Canada, Australia and Germany are in verification. They will be published only after official test cases and an independent cross-check pass, and will be listed here when they go live.

Found something wrong?

Email errors@moneyotter.com with the calculator, the inputs you used and what you expected. Corrections are listed here with the date they were made. You can also read how the calculations work and where the reference data comes from.