PlanetToolbox

Compound Interest Calculator

Estimate compound interest with principal, recurring contributions, compounding frequency, and inflation adjustment.

Final balance

$63,368

Contributed

$40,000

Interest earned

$23,368

Today's dollars

$49,503

Compound inputs

Estimate compound growth

Principal

Regular contribution

Annual rate

Years

Contribution frequencyCompounding per year

Contribution timingInflation rate

Growth summary

Final balance: $63,368
Total contributions: $40,000
Interest earned: $23,368
Inflation-adjusted value: $49,503

Yearly projection

Year 1$13,821

Year 2$17,918

Year 3$22,312

Year 4$27,023

Year 5$32,074

Year 6$37,491

Year 7$43,300

Year 8$49,528

Year 9$56,206

Year 10$63,368

Result actions

Next steps

Retirement calculatorUse the growth assumptions inside a retirement readiness estimate.Savings goalWork backward from a target date and savings goal.Investment growthCompare investment growth with contribution and return scenarios.

Compound interest notes

Results are based on the rate, contribution amount, contribution timing, and compounding frequency you enter. Actual account growth can differ because of market returns, fees, taxes, and changing contribution behavior.