Live tax & cost calculators

Every calculator here is a live Valem model: verified against its stated formula, interactive, and yours to fork or embed.

Each one publishes its formula, its test vectors and its sources, and any model built on illustrative rather than statutory rates says so on its own page. We checked 102 of them against the statutes they implement — 29 of the 51 salary models were wrong; read the findings.

Or compare them all at once: take-home pay across every country, ranked.

Working for yourself? Self-employment calculators cover the named regime in each country — Germany's Freiberufler, Brazil's MEI, Estonia's FIE — since which regime you are in usually matters more than the rate.

Not a tax question? The decision tools — car cost of ownership, rent vs buy, FIRE, debt payoff — project from your own assumptions instead of a statute.

Want one rule explained on its own? Rule explainers cover specific thresholds and mechanisms — the UK's £100k allowance taper, Estonia's car-tax CO₂ charge and more — each linked to the calculator that computes it.