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Coast FIRE Scenario Calculator

Estimate how much you need saved today to reach your retirement goal without adding another dollar, assuming steady investment returns.

Quick answer: Coast FIRE is the point where current investments can grow to your retirement target without more contributions. You still need income for current expenses until retirement.

SWReviewed by SwitchWize Research Desk · Last reviewed July 16, 2026
Coast FIRE Number
$347,066
Coast FIRE Number
$347,066
Years to Retirement
30.0 years
Gap to Coast FIRE
$272,066
Percent to Coast FIRE
21.61%
Coast FIRE progress
$347,066total
Current savings$75,000
Gap remaining$272,066
Total$347,066
Percent to Full FIRE
5.00%
Diagnostic

The modeled Coast FIRE balance is $347,066; current savings equal 21.61% of that scenario.

Reaching this number does not guarantee the target. Returns, fees, taxes, inflation, withdrawals, and the target itself can change.

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What to do next

Plan Your FIRE Path

Your action plan
  1. 1

    Set the target and timeline for this plan

    Estimate a current no-additional-contribution balance under a constant real-return assumption.

  2. 2

    Check the assumptions before using the result for a high-stakes decision

    Assumptions change the answer, especially when rates, taxes, or timing matter.

  3. 3

    Save the result to Money Map or use the linked next action

    Turn the result into a prioritized action instead of treating it as a one-off number.

Plan Your FIRE Path

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This is an educational estimate, not tax, legal, investment, or lending advice. Tax rules, rates, and eligibility change and depend on your full situation. Confirm with a qualified professional or the provider before acting.

Calculator action path

Turn this result into a decision

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You could gain ~$347,066/yr. Compare nowMove from calculation to current product options.
Guide
Dependent Care Account or Tax Credit? At $120,000 the Credit Saves $626 More inThe employer dependent care account rose to $7,500 and the care tax credit rose to 50% in 2026. At some incomes the credit still wins. Here are three examples.
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Map this $347,066/yr opportunitySave this opportunity and see how it fits your broader money plan.
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Frequently Asked Questions

Everything you need to know.

What does an example Coast FIRE Scenario Calculator calculation look like?
Using this calculator's own default assumptions, a target retirement number of $1,500,000, current age of 35 and traditional retirement age of 65 produces an estimated coast fire number of $347,066 and years to retirement of 30.0 years. Enter your own numbers above to see how it changes for your situation.
What does 'real return' mean, and why does it matter?
Real return is your investment gains minus inflation (the actual purchasing power your money gains each year). It matters because it shows whether your savings will grow fast enough to reach your goal without you adding more money. A higher real return means your current balance compounds more aggressively over time.
If I have a gap to Coast FIRE, what are my options?
A gap means your current savings won't fully grow to your target by retirement without further contributions. You can close it by saving more now, working longer to extend the compounding period, lowering your retirement target, or assuming a higher return. Each choice trades off current spending, working years, or lifestyle expectations differently.
Is the Coast FIRE Scenario Calculator free to use?
Yes. SwitchWize calculators are free, and you do not need an account to run scenarios or view the result.
Does using the Coast FIRE Scenario Calculator affect my credit score?
No. Using a calculator does not trigger a credit check. A credit impact can occur only if you apply directly with a lender, card issuer, or provider.
Are the results personalized financial advice?
No. Calculator outputs are educational estimates based on the inputs you enter. Review assumptions and confirm terms directly with providers before making a financial decision.
What should I do after seeing the result?
Use the recommendation module on this page to plan your fire path, or run Money Map to compare this investing & retirement decision with your other opportunities.
How does SwitchWize choose related offers?
Related offers are matched by the calculator surface (general) and ranked using SwitchWize data such as rate, fees, trust signals, product fit, and switching friction. Paid relationships do not change organic ranking order.
How fresh are the rates and offers shown?
Rate and offer data is reviewed on a recurring cadence and every offer module shows review context or links to the methodology and disclosure pages.
Where can I see the ranking methodology?
The SwitchWize methodology page explains how rate freshness, editorial review, affiliate disclosure, and category ranking factors work.
Can Money Map use this result?
Yes. Money Map is the broader diagnostic path: it compares savings, mortgage, cards, and debt so you can see whether this calculator result is your highest-impact next move.

Why This Matters

Coast FIRE lets you see whether your current savings can grow to your target on their own, revealing the gap between where you stand and true financial independence. Understanding this number helps you decide whether to keep contributing, extend your working years, or adjust your retirement lifestyle. The math depends on how long your money has to compound before you need it.

How to Use It

  1. 1Enter your target retirement number (the total balance you want when you stop working).
  2. 2Enter your current age to establish your starting point.
  3. 3Enter your planned retirement age to set your investment timeline.
  4. 4Enter your expected real return rate (annual gains after inflation) that your investments will earn.
  5. 5Enter your current retirement savings balance.
  6. 6Review your results: the years until retirement, the balance you'd reach with no new contributions, how far short you'd fall, and what percentage of your full goal you've already locked in.
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Plan Your FIRE Path