Money Market Account Calculator
Print| Total Contributions | $0.00 |
| Total Interest Earned | $0.00 |
When searching for a safe place to park your liquid savings or emergency funds, Money Market Accounts (MMAs) offer an attractive compromise. MMAs combine the competitive interest rates of High-Yield Savings Accounts with the convenience of check-writing and debit card access found in checking accounts—all backed by government FDIC or NCUA insurance.
Our free Money Market Account Calculator helps savers evaluate cash growth. By entering your initial deposit, expected annual interest rate (APY), and recurring monthly contributions, you can project your compound interest growth over time.
How Money Market Interest Compounds
Most commercial banks and credit unions compound Money Market Account interest daily and credit it to your account balance monthly.
The Compound Growth Formula:
Future Value = Principal × (1 + r / n)ⁿᵗ + Monthly Contribution Compound Growth
Money Market Account vs. HYSA vs. CD
Choosing the right vehicle for your liquid cash reserve:
| Account Type | Interest Rate Type | Liquidity & Access | Best Used For |
|---|---|---|---|
| Money Market Account (MMA) | Variable APY (Competitive) | High (Checks + Debit Card access) | Emergency funds requiring immediate spending access. |
| High-Yield Savings (HYSA) | Variable APY (Competitive) | Moderate (Online transfers only) | General savings goals (vacations, home down payment). |
| Certificate of Deposit (CD) | Fixed Locked APY | Low (Early withdrawal penalties apply) | Locking in rates when interest rates are expected to fall. |
Step-by-Step Example Calculation
Imagine opening a Money Market Account with a $15,000 initial deposit, contributing $300 per month at a 4.75% APY over 5 years.
| Milestone | Total Out-of-Pocket Deposits | Cumulative Interest Earned | Total MMA Balance |
|---|---|---|---|
| Year 1 | $18,600 | +$795 | $19,395 |
| Year 3 | $25,800 | +$2,845 | $28,645 |
| Year 5 | $33,000 | +$5,720 Interest | $38,720 Total |
Frequently Asked Questions (FAQ)
Are Money Market Accounts FDIC insured?
Yes. Money Market Accounts offered by commercial banks are FDIC-insured up to $250,000 per depositor. MMAs offered by credit unions are similarly insured up to $250,000 by the NCUA.
What is the difference between a Money Market Account and a Money Market Mutual Fund?
A Money Market Account (MMA) is a bank deposit account with FDIC insurance protection. A Money Market Mutual Fund (MMMF) is an investment security offered by brokerage firms (like Vanguard or Fidelity) holding short-term debt instruments; it is not FDIC insured (though historically extremely stable).
Are there withdrawal limits on Money Market Accounts?
Historically, Federal Reserve Regulation D limited convenient withdrawals from savings and MMAs to 6 per month. While Reg D limits were suspended, some banks still enforce monthly withdrawal or check-writing caps.