Short answer
Cash avoids guaranteed loan interest. Finance preserves capital, but is economically ahead only if its net return sufficiently exceeds the loan rate and fees.
Important variables
- Loan APR and fees
- Down payment and term
- Expected net return on retained capital
- Liquidity reserve and risk tolerance
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Worked example
A €30,000 five-year loan at 5% costs several thousand euros. A 6% assumed investment return is not automatically superior: tax, volatility and cash-flow timing matter.
Break-even: What changes the result?
The return crossover is the rate where the future value of all finance payments equals the cash path. Below it, cash has the mathematical edge.
Common mistakes
- Comparing gross return with loan APR
- Ignoring finance fees
- Treating return as guaranteed
- Using the entire emergency reserve
Terms in this guide
Sources & assumptions
- RATIOXA — Methodology and formulas (2026-08-17)
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