Starting Investing at 25 vs 35: The Real Difference

"I wish I had started investing 10 years ago." It's the most common regret in personal finance. But how much does a decade actually cost you? Let's look at the exact numbers — and what you can do about it.

The 10-Year Gap: €671,617

Two investors, both contributing €500/month at 8% annual return, both investing until age 65. The only difference is when they start:

The investor who starts at 25 ends up with €1,147,130. The one who starts at 35 ends up with €475,513. That 10-year delay costs €671,617 — despite the early starter only contributing €60,000 more (€240K vs €180K).

Those extra 10 years don't just add €60K in contributions. They add €611K in compound interest.

Why the First Decade Matters Most

Compound interest is exponential, not linear. The money you invest early has the longest time to compound — and each year of compounding builds on all previous years.

The first decade's €91K is modest on its own. But it's the seed that every subsequent decade's growth builds on. Without it, the snowball never reaches full size.

What If You're Already 35?

Don't panic — and don't let regret stop you from starting. Here's how to close the gap:

1. Invest more per month. To match the 25-year-old's €1.15M target by age 65, you'd need ~€1,200/month at 8%.

2. Boost your return slightly. The gap between 8% and 10% is significant over 30 years:

A higher-return strategy (more equity, less bonds) with the same €500/month almost doubles the outcome.

3. Add any windfalls. A €20,000 bonus invested at 35 grows to €201,253 by 65 at 8%. Every lump sum accelerates the catch-up.

4. Never stop. The worst thing a late starter can do is stop during a market downturn. Those dips are where you buy cheap shares that will compound for decades.

The Real Cost of Each Year

Every single year you delay has a measurable cost:

These aren't abstract numbers. They represent years of retirement income, financial freedom, or options you'll never have.

See It for Yourself

Model your specific situation in our simulator. Enter your current age, how much you can invest monthly, and see your projected wealth at 60, 65, or 70. If you want to know what starting 5 years earlier would have meant — run that scenario too. The comparison will motivate you to start today.