From progressive brackets to continuous curves, from the quotient familial to the Grundfreibetrag — each jurisdiction models fairness differently. Set in publication order below.
Progressive federal system with 7 brackets from 10% to 37%. Standard deduction of $16,100 for single filers. Social Security (6.2%) and Medicare (1.45%) apply separately.
Five federal brackets from 15% to 33%. Basic Personal Amount of C$16,129 tax-free. CPP and EI contributions apply. Provincial taxes layer on top.
Three main bands (20%, 40%, 45%) with a personal allowance of £12,570. National Insurance contributions are separate from income tax.
Continuous formula-based tax system with a Grundfreibetrag of €11,784. Social contributions (pension, health, unemployment, care) are substantial at ~20%.
Quotient familial system with 5 progressive brackets from 0% to 45%. CSG, CRDS, and social charges add significantly to the effective burden.
Six progressive brackets from 19% to 47% (state + national). Mínimo personal of €5,550. The Beckham Law offers a flat 24% for qualifying expats.
Thirteen progressive brackets from 0% to 24%. First S$20,000 is tax-free. CPF employee contribution of 20% (capped at S$102,000).
Five tax brackets from 0% to 45% with a tax-free threshold of A$18,200. 2% Medicare Levy applies. Employers pay 12% superannuation.
Zero personal income tax on employment income. No mandatory social security for expatriates. 9% corporate tax applies since 2023.
Two-rate system (20%/40%) with USC and PRSI totalling ~7.7%. Single person's standard rate cutoff at €44,000. 12.5% corporate rate attracts multinationals.
Three Box 1 brackets from 35.75% to 49.5% — the 35.75% already bundles ~27.65% national insurance. Two large tax credits (heffingskorting + arbeidskorting, up to ~€8,800 combined) sharply cut the real burden. The 30% ruling benefits qualifying inbound expats.
Flat municipal tax averaging ~32% plus a 20% national tax above SEK 643,000 of taxable income. The grundavdrag basic deduction and a generous jobbskatteavdrag earned-income credit (up to ~SEK 38,900) pull real effective rates into the low-to-mid 20s for typical salaries.