Money Market Account Calculator
Calculate your money market account growth with regular deposits and compound interest. MMA calculator with yearly balance projection and breakdown chart.
About This Calculator
A Money Market Account (MMA) is an interest-bearing savings account that typically offers higher rates than regular savings accounts while maintaining liquidity. Our calculator projects your MMA balance growth based on your initial deposit, monthly contributions, interest rate, and time horizon.
The calculator uses the compound interest formula with monthly contributions applied at the beginning of each period. Interest compounds monthly based on the annual rate divided by 12. The future value is computed as FV = P(1+r/12)^n + PMT x ((1+r/12)^n - 1)/(r/12) x (1+r/12), where P is the initial deposit, PMT is the monthly deposit, r is the annual rate, and n is total months.
Money market accounts are ideal for emergency funds, short-term savings goals, or as a place to hold cash reserves that earn competitive interest while remaining accessible. Use this calculator to see how regular deposits and compound interest can grow your savings over time.
Regional Notes:
- United States: MMAs are widely offered by banks and credit unions, FDIC/NCUA insured up to $250,000. Rates fluctuate with the federal funds rate and typically range from 3.5% to 5.0%.
- United Kingdom: Similar high-interest savings accounts and cash ISAs are available from UK banks. While "money market account" is less common, easy-access and notice accounts provide competitive rates tied to the Bank of England base rate.
- India: Savings accounts and fixed deposits serve as liquid savings vehicles. The RBI regulates savings rates, while FDs offer guaranteed returns. Money Market Mutual Funds (MMMFs) are a distinct short-term investment product.
Features of Money Market Accounts:
- Higher interest rates than regular savings accounts
- FDIC/NCUA insured up to $250,000
- Limited check-writing and debit card access
- Variable interest rates tied to market conditions
- Higher minimum balance requirements
- Tiered interest rates (higher balances earn higher rates)
Best Uses for Money Market Accounts:
- Emergency fund (3-6 months of expenses)
- Short-term savings goals (1-5 years)
- Holding cash before investing
- Large upcoming expenses (down payment, wedding, etc.)
- Business cash reserves
- Retiree cash holdings
Frequently Asked Questions
What is a Money Market Account (MMA)?
A Money Market Account (MMA) is a type of interest-bearing savings account offered by banks and credit unions. MMAs typically offer higher interest rates than regular savings accounts and may provide limited check-writing and debit card capabilities. They are insured by FDIC (banks) or NCUA (credit unions) up to $250,000.
How is a money market account different from a savings account?
Money market accounts typically offer higher interest rates than regular savings accounts and may include check-writing and debit card privileges. However, they often require higher minimum balances ($1,000-$10,000) and may have more restrictions on withdrawals. Both are FDIC insured.
What are current money market account rates?
As of 2025, money market account rates in the US range from 3.5% to 5.0% depending on the bank and account balance. Online banks and credit unions typically offer higher rates than traditional banks. Rates are variable and change with the federal funds rate.
What is the difference between a money market account and a money market fund?
A money market account is a bank deposit product insured by FDIC/NCUA, while a money market fund is an investment product offered by mutual fund companies that invests in short-term debt securities. Money market funds are not FDIC insured but historically have very low risk. MMAs offer fixed or variable rates, while money market fund yields fluctuate.
How much money do I need to open a money market account?
Minimum deposit requirements vary by institution, typically ranging from $0 to $10,000. Online banks often have lower minimums ($0-$1,000), while traditional banks may require $2,500-$10,000. Some high-yield MMAs require $100,000+ to earn the top advertised rate.
Are money market accounts safe?
Yes, money market accounts at FDIC-insured banks are insured up to $250,000 per depositor, per bank. At credit unions, NCUA insurance provides the same coverage. This makes MMAs one of the safest options for cash savings, alongside traditional savings accounts and CDs.
Can I write checks from a money market account?
Many money market accounts offer limited check-writing privileges (typically 3-6 checks per month). They may also come with a debit card. However, federal Regulation D (now suspended) previously limited certain withdrawals to 6 per month, and some banks still enforce similar limits.
What is the best use for a money market account?
Money market accounts are ideal for short-term savings goals (1-5 years), emergency funds, and as a place to hold cash that earns competitive interest while maintaining liquidity. They're also useful for holding funds before deploying them into longer-term investments.
How are money market account interest rates determined?
Money market account rates are variable and influenced by the federal funds rate set by the Federal Reserve. When the Fed raises or lowers rates, MMA rates typically follow. Banks also consider competition, their need for deposits, and operating costs when setting rates. Online banks often offer higher rates due to lower overhead.
Should I choose a money market account or a CD?
Choose a money market account if you want liquidity and the ability to add funds regularly, even if it means a potentially lower rate. Choose a CD if you have a fixed amount you can lock up for a specific term to earn a guaranteed higher rate. A combination of both can provide a good balance of yield and accessibility.