KVdR or freiwillig versichert. That decision determines whether your health insurance costs €300/month or €900/month in retirement. And it is decided decades before you retire, based on a rule most people discover too late.
The 9/10 rule (Neun-Zehntel-Regelung)
To qualify for KVdR, you must have been insured in the statutory public system (GKV) for at least 90% of the second half of your working life. "Working life" is measured from your first employment to your pension start date.
Example: You started working at age 20 and retire at 67. Working life = 47 years. Second half = 23.5 years. You need 90% of 23.5 = 21.15 years of GKV membership in that second half.
If you spent 5+ years in PKV during that period, you may fail the 9/10 test and be forced into voluntary GKV membership, which calculates premiums on ALL income (rent, dividends, pensions), not just your statutory pension.
Why this matters financially
- KVdR: premiums calculated only on your statutory pension income (~14.6% + Zusatzbeitrag)
- Freiwillig versichert: premiums calculated on ALL income including rental income, dividends, private pensions (~14.6% + Zusatzbeitrag on everything up to the ceiling)
For a retiree with €2,500/month pension plus €1,000/month rental income:
- KVdR: ~€380/month (only pension counts)
- Freiwillig: ~€530/month (all income counts)
Difference: €150/month = €1,800/year for the rest of your life.
