Savings Comparison Calculator
All calculations run in your browser. No data is uploaded.
Yearly balance curve
| Year | Annual deposit | End-of-year balance |
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All calculations happen locally in your browser · CalcGuide
Data Disclosure & Disclaimer
Rate assumption
The annual rate used in this calculator is an example value for demonstration only. Actual returns depend on the official rate of your selected bank or product.
Calculation logic
Standard compound interest formula — lump-sum future value = principal × (1 + rate/n)^(years × n); monthly contributions accumulate as annuity compounding. The formula is public and verifiable.
Data source
Last updated
2026-09-20 (Author/Editor: CalcGuide Editorial)
Disclaimer
This tool is for educational and estimation purposes only. It does not constitute investment, savings or financial advice. Markets carry risk; actual returns are affected by interest-rate changes, taxes and product terms. Consult a licensed financial advisor before making any financial decision.
Frequently Asked Questions
Why does this calculator use monthly compounding?
Most bank savings products compound monthly. Monthly vs annual compounding typically differs by <1%, but the gap grows over time. To simulate annual compounding: divide the annual rate by 12 as a monthly rate, then use this calculator.
Can I use it for mutual funds or stocks?
No. This calculator handles fixed-rate savings/deposit compounding only. It does not model price volatility and is not suitable for net-value products or equity investments.
How is interest tax calculated?
Interest tax is not included. Net returns must be reduced by the applicable tax rate in your jurisdiction.
What is the essence of compound interest?
Compound interest is interest on interest — every period's interest is added to the principal and becomes the base for the next period's interest. This is the key difference from simple interest (where interest does not itself earn interest).
How do I read the formula F=P(1+r/n)^(nt)?
F = future value, P = principal, r = annual rate (as decimal), n = compounding periods per year (this calculator uses n=12), t = years. This formula assumes interest is credited monthly and immediately added to the principal.