Money Market Account Calculator Monthly

Money market accounts are short-term savings accounts that offer higher interest rates than traditional savings accounts. This calculator helps you estimate your monthly earnings and growth potential based on your deposit amount, interest rate, and compounding frequency.

How to Use This Calculator

To calculate your monthly earnings from a money market account:

Enter your initial deposit amount in the "Initial Deposit" field.
Input the annual percentage rate (APR) offered by your money market account.
Select the compounding frequency (typically daily or monthly).
Enter the number of months you plan to keep your money in the account.
Click "Calculate" to see your estimated monthly earnings and final balance.

The calculator will display your monthly interest earned and the total balance after the specified period.

Formula Explained

The calculation uses the compound interest formula:

A = P × (1 + r/n)^(nt)

Where:

A = the future value of the investment/loan, including interest
P = the principal investment amount (the initial deposit or loan amount)
r = the annual interest rate (decimal)
n = the number of times that interest is compounded per year
t = the time the money is invested or borrowed for, in years

For monthly calculations, we adjust the formula to calculate the monthly interest earned.

APR vs APY Explained

Money market accounts typically report both APR (Annual Percentage Rate) and APY (Annual Percentage Yield).

APR is the simple annual interest rate, while APY is the effective annual rate that takes into account compounding.

For example, if an account offers a 2% APR compounded monthly, the APY would be approximately 2.02%.

This calculator uses APR, but you can convert to APY using the formula:

APY = (1 + APR/n)^n - 1

Worked Example

Let's say you deposit $1,000 in a money market account with a 1.5% APR compounded monthly for 12 months.

Principal (P) = $1,000
APR (r) = 1.5% or 0.015
Compounding frequency (n) = 12 (monthly)
Time (t) = 1 year or 12 months

The monthly interest earned would be approximately $1.25, and the final balance would be $1,012.50.

Month	Starting Balance	Interest Earned	Ending Balance
1	$1,000.00	$1.25	$1,012.50
2	$1,012.50	$1.26	$1,025.06
3	$1,025.06	$1.28	$1,037.64
...	...	...	...
12	$1,012.50	$1.25	$1,012.50

Common Fees to Consider

While money market accounts offer higher interest rates, they often come with certain fees:

Minimum balance requirements - Some accounts require you to maintain a minimum balance to earn interest.
Monthly maintenance fees - If your balance falls below the minimum, you may incur a fee.
Withdrawal fees - Some accounts charge fees for withdrawals within a certain period.
Transaction fees - Fees for transfers between accounts or non-account transactions.

Always review the terms and conditions of your specific money market account to understand all potential fees.

Frequently Asked Questions

What is the difference between a money market account and a savings account?: A money market account typically offers higher interest rates than a savings account, but may have more restrictions on withdrawals and balance requirements.
How often are money market accounts compounded?: Most money market accounts compound interest daily, but some may offer monthly compounding. This calculator allows you to select the compounding frequency.
Can I withdraw money from a money market account anytime?: Some money market accounts allow unlimited withdrawals, while others may have restrictions or fees for withdrawals within a certain period.
What happens if my balance falls below the minimum requirement?: If your balance falls below the minimum, you may lose the ability to earn interest or incur a monthly maintenance fee, depending on the account terms.
Is the interest taxable?: The interest earned on a money market account is typically taxable as ordinary income, so you should consult with a tax professional for advice specific to your situation.