Contribution Calculator: Reach Your Savings Goal

Set a savings goal, your starting balance, timeline, and expected return — we’ll estimate the steady contribution needed to get there.

Also try the FIRE calculator — estimate when your portfolio could cover spending

Your inputs

Contribution timing
Contribute at theof each

Results

You will need to contribute $5,934.40 at the end of each month to reach the target of $1,000,000.

End balance
$1,000,000
Starting amount
$20,000.00
Total contributions
$712,128
Total interest
$267,872
  • Starting amount2% · $20,000.00
  • Total contributions71% · $712,128
  • Interest27% · $267,872

Numbers are illustrative only. Real life includes volatility, fees, taxes, and changing returns — this is not financial advice or a guarantee.

How this calculator works

We solve for a constant payment each month or each year so that your starting balance, plus those payments, grows at your chosen return and compounding frequency to meet your target.

The donut shows how much of the final goal comes from your original lump sum, how much you had to add along the way, and how much is attributed to compounding.

Use it to set a realistic savings rhythm — then build the bigger picture (budget, risk, and investing) in the course.

Turn the plan into a system

Learn budgeting, investing, and how to interpret tools like this in structured lessons with practice you can reuse.

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How we estimate the required contribution

We solve for a constant payment so your starting balance can grow toward your target over the chosen timeline at the selected return and compounding frequency.

The chart shows an approximate split of the final amount into starting capital, contributions, and compounding.

Limits of this model

The calculation does not include taxes, fees, changing returns, or income changes. Use it as a planning guide for savings pace — not a promise.

Frequently asked questions

What does the contribution calculator estimate?

It estimates a steady monthly or annual contribution that, together with your starting balance and assumed return, may help you approach your target.

How is it different from the investment calculator?

The investment calculator projects growth from a given contribution. This tool solves for the contribution needed for a given goal and timeline.

Does the result guarantee I will hit my goal?

No. It is a simplified model with a constant return. Real markets, taxes, and fees can change the outcome significantly.

What if the required contribution looks too high?

Try adjusting the timeline, target, starting balance, or expected return. The calculator is for exploring trade-offs, not prescribing one answer.