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Savings vs debt repayment

Compare keeping money in savings, paying down a debt or mortgage, or splitting — using the same starting resources and the same horizon.

Choose a debt from your session, or the mortgage from the Mortgage planner.

A debt The mortgage

Select debt

The same total is used in every scenario — only the destination differs.

Lump sum (applied at month 1)

Recurring monthly amount

Savings interest is an effective annual rate (EAR), compounded monthly.

Current savings balance

Savings interest rate (EAR)

Tax on savings interest

Before tax After tax

Tax is not inferred. Default is before-tax. Enter an effective rate only if you choose after-tax.

All scenarios use the same horizon and starting resources.

Comparison horizon (months)

Split — % to debt (Scenario C)

The remainder goes to savings.

Released payments after debt clears

Redirect to savings Leave outside comparison

When a debt clears early, its minimum payment is released. Redirect keeps the comparison fair; leave-outside excludes it.

Overpayment charge (optional, one-off)

Applied once to any scenario that overpays. Leave blank for none.

Select a debt to compare.