Compound Savings Calculator
See exactly how your money grows over time. Set your deposit, monthly contributions, and interest rate — then watch the power of compounding work for you.
How to use the calculator
Three steps to your personalised savings projection
Set your starting point
Enter your initial deposit — the lump sum you plan to invest or save right now. Even a small start unlocks the power of compounding.
Add monthly contributions
Regular deposits make a dramatic difference over time. Enter how much you can add each month — even a small amount compounds significantly.
Adjust rate & timeframe
Set your expected annual interest rate and drag the slider to explore different time horizons. See milestones like when your money doubles.
💡 The Rule of 72
To estimate how long it takes to double your money, divide 72 by your annual interest rate. At 8% per year, your money doubles roughly every 9 years. Compound interest means your balance earns interest on previously earned interest — the longer you stay invested, the more dramatic the growth.
Track your real savings automatically
Yomio connects projections to real life — scan receipts, track spending by category, and let AI show exactly where your money is going so you can save more.
- 📷 OCR receipt scanning in seconds
- 🤖 AI Copilot for spending insights
- 📊 Real-time expense analytics
- 💰 Savings goal tracking
AI Copilot: Add $50/month more and reach your goal 2 years earlier.
About this compound savings calculator
This free compound savings calculator shows you how your money grows over time thanks to compound interest. Enter an initial deposit, choose a monthly contribution amount, set an annual interest rate, and pick a compounding frequency — then drag the time slider to explore different scenarios. The year-by-year breakdown table and stacked area chart give you an instant visual of exactly how much comes from your own deposits versus how much is pure interest. No account required, no data stored, completely private.
Ready to put your savings plan into action? Use the Yomio expense tracking app to automatically log every purchase, see where your money actually goes, and build the spending habits that make your compound savings plan a reality.