Finance
Compound Interest
Initial deposit + monthly contributions + interest rate + time. See exactly what compounding does to your money.
FAQ
What's a realistic rate? +
Long-term US stock market average: 7-10% (after inflation: 5-7%). High-yield savings: 4-5%. Government bonds: 3-5%. Don't model anything above 10% as "expected."
The 'rule of 72'? +
Divide 72 by your annual return % = years to double. At 7%, money doubles every ~10 years. At 10%, every ~7 years.