If you're married you'll end up with 4000€ per month net, then even if not much if your wife can help a bit you'll be perfectly fine. I live with my girlfriend who's still studying and contributes just ~500€/month, and we get on perfectly fine, can save a lot and enjoy life. 70k for Berlin is on the low end.

In 2026, a gross salary of €70,000 is considered a very solid "upper-middle-class" income for a single person in Berlin. After German taxes and social security, your monthly take-home pay would be roughly €3,500 to €3,700. Given that a modern one-bedroom apartment in a central area (like Prenzlauer Berg or Mitte) now averages around €1,300–€1,600 "warm" (including utilities), you would still have over €2,000 for groceries, transport, and leisure. While Berlin’s cost of living has risen significantly in recent years, €70k still allows for a high quality of life, frequent dining out, and travel. For a family of four, €70k is "comfortable but requires budgeting," as larger apartments are scarce and childcare costs, while subsidized, can add up in the 2026 economy.