Coffee or Stocks · Learning library
Small money decisions, explained
Updated 4 November 2026 · Educational content
Start with a spending choice you recognise, then learn what changes when you add time, recurring contributions and uncertain returns. Each guide links back to the calculator so you can test the ideas with your own assumptions.
Should you really give up your daily coffee?
A practical framework for comparing small spending habits without treating every purchase as a mistake.
Compound growth: what actually does the work?
Understand compounding through a €100 example, and see why time and contributions matter.
One-off purchases and recurring habits are different decisions
Learn to compare subscriptions, takeaways and occasional purchases on a consistent basis.
What inflation, fees and taxes change
Learn why a future account balance is different from future spending power.
An assumed return is not a market forecast
Understand the limits of smooth growth projections and why diversification does not eliminate losses.