Knowledge

Separate crediting intervals, costs and duration: a worked comparison explains which interest rate answers which question.

What is left at the end of an ETF savings plan depends on the contribution, the assumed return, ongoing costs, taxes and purchasing power. This article sorts these factors and names their limits.

A two-year scenario explains reinvestment risk, liquidity needs and the limits of comparing rates alone.

Distinguish the nominal final amount from purchasing power using an exact real-return formula and a ten-year example.

Compare a lump sum with monthly contributions fairly: equal total payments do not mean equal starting conditions.

Compare interest savings, net returns and liquidity using a transparent break-even point, without equating certain and risky income.

Three amortising-loan scenarios show the difference between monthly relief and long-term borrowing costs.

Compare final wealth rather than payment against rent: assess property value, remaining debt, costs and alternative investing together.

Combine depreciation, energy and fixed costs into a transparent comparison with a fully specified example.