Estimate the Solidaritätszuschlag — 5.5% of your income tax bill, only above the 2026 exemption threshold.
Since 2021, about 90% of taxpayers pay no Soli. For 2026, singles owe no Soli if their income tax is below €20,350 (€40,700 for jointly-assessed couples). Above that, Soli is 5.5% of the income tax bill, phased in gradually just above the threshold — this tool applies the full 5.5% once you're clearly over the threshold, which is a simplification of the exact phase-in zone.
Illustrative estimate only, using simplified/rounded 2026 German tax figures — not tax advice. The income tax figure uses a smoothed approximation of the official §32a EStG progressive formula, not the exact quadratic zone formula. Always confirm with the Finanzamt or a Steuerberater.