Second-earner marginal rate (Grenzbelastung des Zweitverdiensts)

Level 2 · FoundationsDE · 2026 figures

German termGrenzbelastung des Zweitverdiensts

Read firstTax classes & spousal splitting · Marginal vs. average tax rate

Deep divesTax Classes (Steuerklassen)

A second earner's first euro of income, under Germany's joint assessment with Ehegattensplitting (income splitting), is taxed at the rate the couple's total income already sits at — not the low starting rate a single filer would face from zero. Social contributions and a possible loss of free family co-insurance layer on top.

Why it matters

Germany's joint taxation with Ehegattensplitting means a second income doesn't get its own tax bracket. It stacks on top of the primary earner's income and inherits that marginal rate starting from euro one. The OECD's Taxing Wages 2026 report puts the combined tax-and-contribution wedge on a two-earner couple with children in Germany at 42.6% of labour costs (2025 data) — the highest in the OECD alongside France, and well above the OECD average of 29.8% [1]. That gap is structural, not a quirk of one household's payslip, and it shows up before childcare costs or lost benefits are even counted. Seeing the mechanism first is what stops a modest net paycheck from reading as proof that "the job barely pays."

Worked example

Take an illustrative couple under joint assessment (Zusammenveranlagung). The primary earner's salary already puts the couple's taxable income at a marginal rate of 35% (illustrative, not a current legal figure) — every additional euro anyone in the household earns is taxed at that rate, not at the entry-level rate a single person starting from zero would face. The second earner takes a job paying €1,500/month gross.

Run the stack on that €1,500:

Step	Amount
Gross pay	€1,500
Income tax at couple's 35% marginal rate (illustrative)	-€525
Social contributions, roughly 20% of gross (illustrative)	-€300
Left over	€675
Effective take-home per additional euro	~45%

Two further items reduce that figure further without a clean percentage attached to them:

• Familienversicherung (free family co-insurance in Germany's statutory health system) covers a non-earning spouse at no separate premium. A job above the geringfügige Beschäftigung (Minijob) threshold ends that free coverage, so the second earner's own health insurance becomes a new, separate deduction on the same euros.
• Childcare hours bought to free up the working time reduce what is left over further, and — unlike a percentage tax rate — the cost doesn't shrink as income falls.

None of the rates above are current German law; they illustrate the shape of the stack. Anyone can rerun the same three-line calculation with their own Lohnsteuerbescheinigung (annual payslip tax certificate) figures and a real childcare quote to see their own effective marginal rate.

Check yourself

Under Germany's joint assessment (Zusammenveranlagung) with Ehegattensplitting, why is the second earner's first euro of income NOT taxed at the low starting rate a single filer would use from zero?

Joint assessment combines both spouses' incomes, so the tax brackets apply to the couple's total income — the second earner's euros stack on top of the primary earner's income and inherit its marginal rateTax class V applies a special, legally higher tax rate exclusively to second earners, separate from the normal income tax bracketsThe Finanzamt (tax office) applies a fixed surcharge to any household reporting two incomesSocial insurance contributions are only charged on second incomes, not on the primary earner's income

Per the worked example, which of these reduce what a second earner effectively keeps from an additional euro of gross income, beyond income tax itself? (select all that apply)

Social insurance contributions (health, pension, unemployment, long-term care), roughly 20% of gross in the illustrative examplePossible loss of free Familienversicherung (family co-insurance in statutory health insurance) once earnings exceed the Minijob (geringfügige Beschäftigung) thresholdChildcare hours bought to free up the time needed to workA separate, higher statutory tax bracket that applies only to second earners

Using the worked example's illustrative rates — a 35% income-tax marginal rate and roughly 20% social contributions — on a €1,500/month gross second income, approximately how many euros does the second earner keep after tax and social contributions?

The OECD's Taxing Wages 2026 report found a 42.6% tax-and-contribution wedge on a two-earner couple with children in Germany (2025 data), versus an OECD average of 29.8%. What does this figure illustrate?

That Germany's joint taxation system imposes, on average, one of the highest combined tax-and-contribution burdens on two-earner couples among OECD countriesThat every second earner in Germany pays a flat 42.6% income tax rate on their salaryThat the OECD average tax wedge (29.8%) is higher than Germany'sThat childcare costs are counted inside Germany's official tax wedge figure

Sources

1. OECD — Taxing Wages 2026: Germany (tax-and-contribution wedge for a two-earner married couple with two children, 42.6% of labour costs vs. OECD average 29.8%, 2025 data), https://www.oecd.org/en/publications/taxing-wages-2026_3a5169ef-en/full-report/germany_8f4270cd.html (2026)