# Money Market Account Calculator

URL: https://speedycalculator.com/calculators/finance/money-market-account/
Last updated: 2026-10-25

> The money market account calculator projects the balance of a money market account or fund from the starting balance, regular deposits and the expected yield – total deposits, interest earned and final value.

## Inputs

- Starting balance
- Recurring monthly investment
- Expected annual return (APY) (%)
- Investment period (years, months)

## Results

- Future value of the money market account
- Total deposits
- Total interest

## Formula

```
FV = P × (1 + r ÷ 12)^(12t) + monthly deposit × [(1 + r ÷ 12)^(12t) − 1] ÷ (r ÷ 12)
```

## Explanation

Money market accounts are bank deposit accounts that pay higher rates than ordinary savings and are FDIC-insured; money market funds are mutual funds investing in short-term debt. Both suit emergency funds and short-term goals.

### How to use the Money Market Account Calculator

- **Starting balance**
- **Recurring monthly investment**
- **Expected annual return (APY)**
- **Investment period**

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Enter the starting balance, the recurring monthly deposit, the expected annual yield and the investment period.

### Tips

- Use the nominal annual rate and pick the compounding frequency your bank or broker states.
- Small differences in return or fees compound into large differences over decades.
- Run the calculation with a cautious, a central and an optimistic return to see the range of outcomes.
- Past returns do not guarantee future returns – nothing here is investment advice.

### Common mistakes to avoid

- Comparing an APR with an APY or effective rate.
- Ignoring inflation, taxes and fees when judging a real return.
- Entering a percentage as a decimal (5 instead of 0.05 is correct here).

### Inputs explained

FieldWhat to enterStarting balanceAmount in your currencyRecurring monthly investmentAmount in your currencyExpected annual return (APY)In %Investment periodUnits: years, months

### What each result means

- **Future value of the money market account** = fvc((1 + [Expected annual return (APY)]÷100)^(1÷12) - 1, round([Investment period]×12), [Starting balance], [Recurring monthly investment], 0)
- **Total deposits** = [Starting balance] + [Recurring monthly investment]×round([Investment period]×12)
- **Total interest** = [Future value of the money market account] - [Total deposits]

### Example values

How the main result changes when **Starting balance** changes and everything else stays at the example values above:

Starting balanceFuture value of the money market account2,50016,277.443,75017,798.255,00019,319.076,25020,839.897,50022,360.710,00025,402.33

## Worked example

Inputs — Starting balance: $5,000; Recurring monthly investment: $200; Expected annual return (APY): 4 %; Investment period: 5 years.

Results — **Future value of the money market account = $19,319.07**; Total deposits = $17,000.00; Total interest = $2,319.07.

## FAQ

**What is a money market account?**
An interest-bearing bank account, often with check-writing and higher rates than savings.

**Are money market funds insured?**
Funds are not FDIC-insured; money market deposit accounts at banks are.

**How often is interest paid?**
Usually compounded daily and paid monthly.

**What formula does the Money Market Account Calculator use?**
FV = P × (1 + r ÷ 12)^(12t) + monthly deposit × [(1 + r ÷ 12)^(12t) − 1] ÷ (r ÷ 12).


## Sources

- [FDIC – Deposit insurance](https://www.fdic.gov/resources/deposit-insurance)