Employer Change: Which Data and Numbers Does the New Employer Need? (2026) in Germany

HR files § 28a SGB IV registration within 6 weeks — contributions 17. Five items: Sozialversicherungsnummer (SV-Nummer), Steuer-ID, DAK-Gesundheit Mitgliedsbescheinigung, IBAN for salary, and the Arbeitsbescheinigung from the previous employer. 8% of gross split 50/50.

The new employer simply reports the change to DAK-Gesundheit under § 28a SGB IV. Yes — the Krankenkasse follows the person, not the job. No new membership is needed unless you actively switch funds (§ 175 SGB V, 18-month binding rule).

A 12-digit lifelong ID issued by the DRV Bund (Deutsche Rentenversicherung) at the first-ever GKV registration in Germany. DAK-Gesundheit requests it for new members within 2 weeks; without it, the M10 electronic notification cannot be filed.

Yes — an employer change triggers a special right to switch Krankenkassen (§ 175 SGB V), overriding the normal 18-month binding period. DAK-Gesundheit (English service, €120/year Garantietarif rebate) is a popular target fund at 17.8% of gross.

The new employer files § 28a SGB IV within 6 weeks, but DAK-Gesundheit issues an updated Mitgliedsbescheinigung within 24 hours for HR — contributions 17. Same-day digitally. 8% of gross flow from the first payroll.

Your new employer needs a Mitgliedsbescheinigung (health insurance membership certificate), your social security number, and your tax ID. You can request the certificate from your current insurer – for example, the DAK Gesundheit for employees (from approx. 17.8 % of gross salary) provides it digitally within hours.

Yes. When you change employers, the usual 12-month lock-in period does not apply. You can freely choose any statutory health insurer. If you need a temporary solution during a gap, Care Economy (from 30 € / 30 days) can bridge short waiting periods.

Your statutory health insurance (GKV) continues without interruption – even during short gaps between employment contracts. If the gap is longer, you can use an incoming insurance like Care Economy as a bridge. Your employer handles the re-registration once you start the new position.