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Financial calculators: understand every assumption

Financial tools are useful for scenario planning, but an estimate is not a promise or an official quotation.

Practical guide ยท Updated November 2026

Enter realistic values

Check the contribution, rate, tenure, compounding interval, fees and inflation assumptions before calculating.

Compare scenarios

Change one assumption at a time and compare the resulting figures. This makes it easier to understand what drives the result.

Understand limitations

Tax treatment, scheme rules, market returns, employer policy and interest rates can change. A calculator may use simplified assumptions and may not include every charge.

Verify important decisions

Use official bank, government, employer or scheme documents for current rules. Consider qualified advice for personal investment, tax or loan decisions.

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