Money Market Account Calculator

A money market account calculator estimates how much your balance could grow based on an initial deposit, monthly contributions, an APY assumption, and a time period.

To estimate money market interest, start with your balance, apply the APY over the selected period, and add recurring contributions if you plan to save monthly. The final balance minus total contributions is the estimated interest earned.

APY includes the effect of compounding over a year, while a simple interest rate may not. For account comparisons, APY is usually the better number to use because it reflects effective annual yield.

Yes. Enter a time period in months or years and add any monthly contribution. The calculator updates the projected balance, contributions, and interest earned for that scenario.

You can use it for rough planning when you have an expected yield, but money market funds are not the same as bank money market accounts. Fund yields can fluctuate and may include fees or share-price considerations.

No. The calculator uses the APY you enter. Always check the current APY, fees, balance tiers, and terms from the financial institution before making a decision.

You need an initial deposit, an APY assumption, an optional monthly contribution, and a time period. You can change any input to compare different savings scenarios.

No. Results are educational estimates for planning and comparison. They are not financial, investment, legal, or tax advice.