General investing

Money Market Account Calculator

See what a money market account grows to, the balance and interest, from your deposit, monthly additions and rate.

  • Free
  • No sign-up
  • Updated for 2026

Your account

$
$

added each month

%
yr

Enter your deposit, monthly amount, rate and years to project the balance.

Worked example

With these example inputs:

  • Opening deposit$10,000
  • Monthly deposit$200
  • Annual yield (APY)4.5%
  • Years5 yr

Future balance: $25,947

  • Starting amount$10,000
  • Total contributions$12,000
  • Total interest$3,947
  • Total growth17.9%

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What this money market account calculator does

This calculator finds your future balance. You enter an opening deposit and a monthly deposit. You add the yield and the number of years. So you see the balance and the interest earned. It shows how a money market account grows. The result appears in your chosen currency.

What a money market account is

A money market account is a savings account. It often pays a higher yield than a basic one. It keeps your cash safe and easy to reach. So it suits an emergency fund or short goal. The rate can change over time. It blends saving with quick access.

How it is calculated

The tool grows your opening deposit at the yield. It adds each monthly deposit as you go. It compounds the interest every month. So your balance builds on itself over time. A higher yield speeds it up. The result is your future balance.

What the result tells you

The result shows your future balance. Ten thousand plus two hundred a month at four and a half percent grows over time. It reaches about twenty-six thousand in five years. A higher yield raises it. More years raise it too. So it shows your end balance. It is an estimate, nothing more.

The opening deposit

Your opening deposit is the cash you start with. It is the lump sum you put in first. A bigger start means a bigger balance. So this number sets the base. Use the amount you can open with. It is the core of the whole sum. Enter your opening deposit.

The monthly deposit

Your monthly deposit is what you add each month. It is the steady top-up to the account. Regular deposits build the balance fast. So this number drives most of the growth. Use an amount you can keep up. Even a small deposit adds up. Enter your monthly deposit.

The annual yield

The annual yield is the rate the account pays. It is shown as an APY here. A higher yield grows the balance faster. So this number sets the pace of growth. Use the APY the bank quotes. Mind that the rate can move. Enter your annual yield.

The interest earned

The tool also shows your interest earned. That is the growth on top of your deposits. Here it is about four thousand dollars. A higher yield or more years lifts it. So you see the reward for saving. It is the part the bank pays you. Watch it grow as the years pass.

How to use it

Enter your opening deposit first. Add your monthly deposit and yield. Set the number of years. Read the future balance in your currency. Then try a higher monthly deposit. Compare a few yields. Use it to plan your savings.

The limits of this calculator

It has a few clear limits. It assumes a steady yield throughout. Real rates can rise or fall. It ignores tax on the interest. It assumes you never withdraw. So treat it as a guide. So check the current APY first.

A final tip

Use this to plan a money market account with care. Remember the yield can change. Keep the monthly deposit steady. Compare the APY across banks. Watch for any monthly fees. Do not lock in cash you may need. A careful plan needs the real terms.

Frequently asked questions

How is a money market account different from savings?

A money market account often pays a higher yield and may offer limited checks or a debit card, but it can require a higher minimum balance than a basic savings account.

Is the money market rate fixed?

Usually not, the yield is variable and can change with the market, so the projection assumes the rate you enter stays constant.