Compound interest is easiest to understand when you can see how savings or investments grow year after year. Starting with $5,000, adding $200 monthly, and assuming a 5% annual rate gives a clear picture of how both deposits and reinvested growth contribute.
Real markets, rates, and fees vary, so the projection is educational rather than guaranteed. It is still a valuable way to compare scenarios, test monthly contributions, and understand why starting earlier can have a large effect over long periods.
Starting with $5,000, adding $200 monthly at 5% APR for ten years illustrates how regular deposits plus compounding grow balances — actual fund returns vary year to year.
Illustrative projection — taxes, fees, and varying rates change outcomes.
Small automatic deposits compound quietly over years. Modeling $150 per month at a conservative rate shows why starting early matters more than waiting for a larger lump sum later in life.
Use the APR your bank quotes on savings products, not historical stock returns, when modeling conservative emergency-fund growth scenarios.