Investment Calculator
Calculate the future value of your investments with regular contributions. See amortization schedule of your investment growth.
Result
Please check your inputs.
How to Use This Tool
Enter your initial investment amount (the sum you start with).
Input your expected annual interest rate (as a percentage, e.g., 7 for 7%).
Choose the investment duration in years and the compounding frequency (monthly, quarterly, or annually).
Set your regular contribution amount and contribution frequency (e.g., monthly or yearly).
Click 'Calculate' to view the future value and the amortization schedule showing growth year by year.
What Is Investment Calculator?
An investment calculator is a financial tool that estimates how much your money can grow over time when you make regular contributions. It uses compound interest to project the future value of your savings or investments, accounting for initial capital, periodic deposits, and assumed rates of return. Understanding this helps you set realistic savings goals and compare different investment strategies. By visualizing the amortization schedule, you see exactly how each contribution builds wealth, making it easier to adjust your plan to reach targets like retirement, a down payment, or an emergency fund.
Formula
The tool uses the future value of a series formula: FV = P * ((1 + r/n)^(n*t) - 1) / (r/n) + PV * (1 + r/n)^(n*t), where FV = future value, PV = initial investment, P = regular contribution amount, r = annual interest rate (decimal), n = number of compounding periods per year, and t = number of years. In plain English: the final amount equals the sum of your compounded initial lump sum plus the compounded total of all your regular contributions.
Tips for Best Results
📈 Start early — even small contributions grow exponentially with time due to compound interest.
🔄 Increase contributions gradually — bump up your monthly amount whenever you get a raise or bonus.
📊 Match your compounding frequency to your contributions — monthly compounding with monthly deposits maximizes growth.
🎯 Use realistic interest rates — base your rate on historical averages (e.g., 6-8% for stocks) rather than optimistic guesses.
Frequently Asked Questions
What is an amortization schedule for investments?
It's a year-by-year or period-by-period breakdown showing your starting balance, contributions made, interest earned, and ending balance. This helps you see exactly how your money grows over time and when your contributions start earning significant returns.
How does compounding frequency affect my results?
More frequent compounding (e.g., monthly vs. annually) earns interest on interest sooner, leading to a slightly higher future value. The difference becomes more significant over longer periods and higher rates.
Can I use this calculator for retirement planning?
Yes! Input your current savings, expected annual return (adjust for inflation if needed), and projected monthly contributions. The calculator shows if you're on track for your retirement goal based on your time horizon.