Compound Interest Formula:
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Compound interest is interest calculated on the initial principal and also on the accumulated interest of previous periods. It allows savings to grow at an accelerating rate compared to simple interest.
The calculator uses the compound interest formula:
Where:
Example: $10,000 at 4.6% APY compounded monthly for 5 years would earn $2,531.81 in interest.
Current Rates (2023): Top high-yield savings accounts offer 4.00%-5.00% APY, significantly higher than traditional savings accounts (0.01%-0.10%).
Tips: Enter principal amount, current APY (default is 4.60%), select compounding frequency (monthly is typical for savings accounts), and investment period.
Q1: What's the difference between APY and APR?
A: APY includes compound interest while APR does not. APY gives the true rate of return.
Q2: How often do savings accounts compound?
A: Most high-yield savings accounts compound interest daily and pay monthly.
Q3: Are high-yield savings accounts safe?
A: Yes, when from FDIC-insured banks (up to $250,000 per depositor).
Q4: Why does compounding frequency matter?
A: More frequent compounding results in slightly higher returns.
Q5: How does this compare to CD or money market rates?
A: CDs often offer slightly higher rates but lock up funds. Money markets may offer check-writing privileges.