🏦 Savings Growth Simulator
Watch your savings account balance grow month by month. Perfect for high-yield savings, CDs, money market accounts, and any fixed-rate savings vehicle.
Savings Trajectory
What is the Savings Growth Simulator?
The Savings Growth Simulator projects the future value of money held in a savings account, certificate of deposit, or any other fixed-rate, low-risk vehicle. Unlike investment accounts, savings accounts have predictable, guaranteed returns — making them ideal for emergency funds, short-term goals, and capital preservation.
This tool helps you answer practical questions: How fast will my emergency fund grow? How much will I have in 3 years if I save $200 a month? Should I choose a 12-month CD or a high-yield savings account?
How Compound Interest Works in Savings
The formula for compound interest in savings is:
Where P is the initial deposit, r is the annual rate (APY), n is the compounding frequency per year, t is years, and PMT is the regular contribution. More frequent compounding (daily vs annually) produces slightly more interest, though for typical rates the difference is small.
How to Use This Simulator
- Enter your current savings balance and the amount you plan to deposit each month.
- Set the APY offered by your bank (high-yield savings currently offer 4–5%).
- Choose your compounding frequency. Most savings accounts compound daily or monthly.
- Set your time horizon and click "Project My Savings" to see the full growth curve.
Benefits of Visualizing Savings Growth
Savings accounts feel "boring" because their returns are modest — until you project them out 5, 10, or 20 years. A chart showing $50,000 from consistent $200 monthly deposits is a much more powerful motivator than a balance statement showing $300 of monthly interest.
The simulator also helps you compare vehicles. A 5% APY high-yield account vs. a 4% money market may not seem different month-to-month, but over 10 years the difference is thousands of dollars. Run the comparison.
Frequently Asked Questions
What is APY vs APR?
APY (Annual Percentage Yield) includes the effect of compounding. APR (Annual Percentage Rate) does not. For savings, APY is the relevant number because it shows what you actually earn.
How often do savings accounts compound?
Most high-yield online savings accounts compound daily and pay interest monthly. Traditional brick-and-mortar banks often compound monthly. The difference is small for typical balances.
Is my savings safe?
In the US, FDIC-insured bank accounts are protected up to $250,000 per depositor per bank. Credit unions have similar NCUSIF coverage. Money outside insured deposits is not protected.
Should I ladder my CDs?
CD laddering is a strategy where you stagger CDs of different maturities. It provides regular access to funds while capturing higher long-term rates. Use this simulator to model each rung.
What about inflation?
This is a nominal projection. With 2.5% inflation, a 4.5% APY yields only ~2% real return. For long-term goals, consider supplementing savings with investments that have higher real returns.
Related Simulators
- Future Wealth Simulator — total picture including investments.
- Investment Growth Simulator — for market-based returns.
- Retirement Projection Simulator — long-term planning.
- Habit Builder Simulator — build the saving habit.