FREE COAST FIRE CALCULATOR

Have I reached Coast FIRE?

Add a few numbers. See whether your savings could grow to your retirement target without more contributions—and which assumptions make the difference.

Free. Your result opens in Ask Linc with just your email and a password.

  1. 01Add your numbers
  2. 02Linc runs the math
  3. 03See what changes

01 / YOUR STARTING POINT

Start with your numbers.

Seven inputs. All amounts in today’s dollars.

Whole household, after tax.

Social Security, a pension, or other reliable income that starts on your retirement date.

Growth after inflation.

The share you spend in year one.

KEEP EXPLORING

Change the assumption,
not the spreadsheet.

Try another retirement age, spending level, or return. Recalculate to see how your target changes.

Stress-test retirement against market history

WHAT THE FORMULA ASSUMES

Simple enough to check.

Not modeled: taxes, fees, account types, healthcare, one-off costs, changing spending, income that starts later, or sequence-of-returns risk. This is educational information, not financial advice.

THE NUMBER IS THE EASY PART

Have you reached it—and can you really coast?

Connect your financial life and ask what working less could look like. Linc brings your holdings, spending, and income into the analysis, then helps you test the what-ifs against real market history.

  • Can I stop maxing my 401(k)?
  • Could I take a $30K pay cut?
  • Could one of us stop working?
  • What if returns are worse than this?
  • Can I spend $20K more a year?
Stress-test my Coast FIRE plan

Try free for 30 days. No credit card required.

COAST FIRE, PLAINLY

Common Coast FIRE questions.

What is Coast FIRE?

Coast FIRE is the point where the retirement savings you already have could grow to your retirement target without additional contributions, assuming your timeline and investment returns hold. You still need income to cover life before retirement; the idea is that retirement saving may no longer need to drive every work and spending decision.

How is my Coast FIRE number calculated?

The calculator subtracts retirement income available from the day you retire from your annual spending, divides the remainder by your withdrawal rate to estimate the portfolio needed at retirement, then discounts that target back to today using your real return and years until retirement.

Should I stop contributing when I reach Coast FIRE?

Not necessarily. Reaching the number means one simplified set of assumptions works. Taxes, fees, account access, healthcare, income timing, a poor early market sequence, and changes in your life can all change the decision. Treat the result as a reason to explore your options, not an instruction to stop saving.

What real return should I use?

Real return is investment growth after inflation. A lower assumption produces a higher Coast FIRE number and a more conservative result. The calculator shows nearby return scenarios so you can see how sensitive your answer is instead of relying on one rate unnoticed.

Can I include Social Security or a pension?

Yes, but only enter income expected to be available from the retirement age in this calculation. If Social Security, a pension, or another income source starts later, the simple formula will overstate its help because it does not model the gap years separately.

Is the Coast FIRE calculator free?

Yes. The calculator is free, and your result opens in Ask Linc: enter your email and choose a password. There is no code to enter and no credit card. Ask Linc's planning experience is the next step when you want to replace the simple assumptions with your actual holdings, spending, income, taxes, and scenarios.

CONTINUE WITH THE CONCEPT

More about Coast FIRE.