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Interactive tool

Compound Interest

The same money as savings and as debt, on one chart.

OPEN MN-04 · COMPOUND INTEREST: THE MATHS OF TIME (AND OF DEBT)CLIENT-SIDE · NOTHING SENT
Free preview. Try it once here. Members get unlimited runs and can save what they make to their output archive. See plans
Interactive tool

Compound Interest

Runs in your browser.
Nothing you type is sent anywhere.
start20 years · dashed = what you put in
Ends worth
56,131
You put in25,000
Interest earned31,131
Multiple on your money2.25×

Same maths, either direction. On the savings side, time is the ally; on the debt side, at credit-card rates a payment near the interest can mean it never clears. Flip the toggle and watch the shape invert.

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