Skip to main content

Investment Calculator

Quick answer

FV = P(1+r)^t + PMT·((1+r)^t−1)/r: 10,000 plus 250 monthly at 7% grows to ≈75,900 in 15 years — deposits and compounding combined.

Figures are estimates from this calculator’s standard formula — adjust the inputs in the tool below for your exact number.

How the Investment Calculator Works

Future Value = P(1+r)^t + C x [((1+r)^t - 1) / r]

This tool calculates your investment growth using compound interest, with the option to add periodic contributions. The formula combines the growth of initial capital with the growth of accumulated contributions.

  1. 1

    Step 1

    Enter the initial investment amount (P)

  2. 2

    Step 2

    Specify the periodic contribution (C) and its frequency

  3. 3

    Step 3

    Enter the expected annual return rate (r)

  4. 4

    Step 4

    Set the investment duration in years (t)

  5. 5

    Step 5

    Calculate the future value and total return

Use Cases

Retirement Planning

Estimate retirement fund size based on savings and monthly contributions

Saving for a Goal

Calculate how much to save monthly to reach a specific financial goal

Comparing Investment Strategies

Compare different investment returns to choose the most suitable

Education Funding

Plan for children's future college education expenses

Tips

  • 1

    Start investing early even with small amounts

  • 2

    Use realistic return rates (5-8% for diversified investments)

  • 3

    Don't forget to account for inflation in your projections

  • 4

    Automate contributions to ensure consistency

  • 5

    Review and adjust your investment plan annually

Common Mistakes

  • Overestimating Returns

  • Ignoring Inflation

  • Overlooking Fees

  • Lack of Diversification

FAQs

What is a realistic return rate for investments?

Historically, the stock market returns 7-10% annually over the long term. Bonds return 3-5%, and savings accounts 1-3%. Use 6-7% as a conservative rate for planning.

What is the difference between nominal and real returns?

Nominal return is the stated percentage without inflation adjustment. Real return = Nominal return - Inflation rate. Example: 8% return - 3% inflation = 5% real return.

How much should I save monthly for retirement?

General rule: save 15-20% of your income for retirement. Use the calculator to determine the exact amount based on your current age and target retirement age.

Is it better to invest a lump sum or in installments?

Statistically, investing a lump sum immediately yields higher returns. However, investing in installments (dollar-cost averaging) reduces timing risk and suits most investors.

How do I calculate the amount needed to reach a specific goal?

Use the formula: Monthly contribution = Goal x [r / ((1+r)^n - 1)], where r is the monthly rate and n is the number of months. Or use the calculator by entering the goal and experimenting.

Related tools

Pick another tool to continue your calculation.

🏠

Home Loan Payment Calculator

Home loan payment = P × r(1+r)^n/((1+r)^n−1). See the monthly installment, total interest and payoff cost for any house price, rate and term.

💳

Loan Calculator - Calculate Monthly Payments and Interest

Loan EMI = P·r(1+r)^n/((1+r)^n−1): 200,000 at 7% for 5 years costs ≈3,960/month and ≈37,600 total interest. Compare terms and rates side by side.

⚖️

Loan Comparison – Pick the Cheaper Loan

Compare two loans side by side to choose the best option.

🤝

Personal Loan Calculator

Personal loan payment = P·r(1+r)^n/((1+r)^n−1). A 40,000 loan at 11% for 5 years costs ≈870/month and ≈12,200 total interest.

📊

Loan Amortization Calculator - Create Payment Schedule

Month by month: interest = balance × r, principal = payment − interest — 250,000 at 7%/30y opens 1,458/205. See the full payoff schedule.

✅

Loan Eligibility Calculator

Calculate the maximum loan amount you qualify for.