Compound Interest Guide
Five-Year vs Ten-Year Savings Growth
Understand why doubling the time period can do more than simply double the result.
In this guide
Longer time changes the curve Short goals need realistic expectations Use the annual tableLonger time changes the curve
A ten-year projection is not just two five-year projections placed side by side. Later years may begin with a larger balance, so the same return rate can create larger dollar growth.
This is the compounding effect becoming more visible.
Short goals need realistic expectations
For a five-year goal, contributions often matter more than investment growth. There may not be enough time for compounding to dominate the result.
For longer goals, the interest or return portion may become a larger share of the final balance.
Use the annual table
The year-by-year projection helps users see how growth changes between early and later years.
If the later years add more interest than the early years, that is the compounding curve at work.