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Retirement Calculator: Plan Your Financial Future

Written by Calcida Team
Reviewed for accuracy and clarity
Last updated: April 2026

Visualize your future and take control of your retirement planning. This tool projects how your initial savings and consistent monthly contributions will grow over time through compound interest.

Experiment with different retirement ages and return assumptions to see what it takes to hit your financial goals. The best time to start planning was yesterday; the second best time is today.

Visit our Retirement Calculators hub for more wealth-building tools.

Estimated Balance at Retirement

$2,376,362
In 35 years at age 65

Retirement Fund Projection

Plan your retirement income

Estimate how much you need to save for a comfortable retirement.

How This Calculator Works

This calculator projects your future nest egg by applying the power of compound interest to your current savings and future monthly contributions.

The Growth Engine:

  1. Initial Balance: Your starting point today.
  2. Monthly Contributions: The consistent amount you add each month.
  3. Compound Interest: Your money earns returns, and then those returns earn their own returns, creating exponential growth over decades.
  4. Time Horizon: The number of years until you plan to retire is the most critical factor in the final result.

Formula

FV = P(1 + r)^t + PMT × [ ((1 + r)^t − 1) / r ]
Where:
  • FV = future value
  • P = starting balance
  • r = periodic return rate
  • t = number of periods
  • PMT = periodic contribution

Example Calculation

See how a $500 monthly contribution grows over a 35-year career:

  • Current Age: 30
  • Retirement Age: 65
  • Starting Balance: $10,000
  • Monthly Contribution: $500
  • Assumed Annual Return: 7%
  • Projected Balance: ~$882,000

*Of this total, approximately $662,000 comes from compound interest alone!

The Power of Starting Early

Compound interest is often called the 'eighth wonder of the world.' If you start saving $500 a month at age 25, you could retire with significantly more than if you start at age 35, even if you save more per month later. Time is your greatest asset in retirement planning.

Maximize Your Savings

Retirement planning has many moving parts. Use these related tools to dive deeper into specific accounts and strategies:

Frequently Asked Questions

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