Coast FIRE Calculator

Enter current age, savings, expected return, retirement age, target nest egg, and annual contribution. Tool finds exact age you can stop contributing while existing savings compound to retirement target. Example: two hundred thousand at age thirty five with seven percent return may reach one million by sixty five without further deposits if target is one million or below. Coast age thirty nine with two hundred thousand saved and seven percent return may hit one million by sixty five without further contributions if target one million or less. Coast milestone means retirement funding on autopilot while you still earn for current living costs until traditional retirement age you selected. Coast age milestone is psychological and financial inflection point where retirement funding switches to passive compounding while you continue earning for current lifestyle expenses until selected retirement age. Coast milestone means retirement account funded while you continue earning for current living expenses until chosen traditional retirement age arrives.

Review Coast FIRE age, required monthly contribution until coast point, and year by year projection marking when contributions stop. After coast age you still work for living expenses but redirect prior savings rate to debt payoff, lifestyle, or taxable investing. Required monthly contribution before coast age shows sprint intensity during accumulation phase. Required monthly contribution before coast age quantifies sprint phase savings intensity during accumulation years. Compare required monthly contribution before coast age against current actual savings rate to see whether you are ahead or behind coast sprint schedule this year. Required monthly contribution before coast age shows sprint phase savings intensity during accumulation years before coast milestone reached. Compare required monthly pre coast contribution against actual savings rate this year to judge ahead or behind coast sprint schedule progress. Monthly savers may coast slightly later than annual contribution model shows because intra year contribution timing affects compound path materially near coast age boundary. Coast number equals present value of future retirement nest egg discounted at expected return minus current portfolio value showing how much more accumulation needed before stopping contributions. Part time income covering current expenses while portfolio compounds untouched accelerates coast date versus full employment with partial savings rate into same portfolio balance trajectory comparison scenario.

Track progress when coast milestone is reached. Compare required monthly pre coast contribution against actual savings rate this year to judge ahead or behind coast sprint schedule progress. Monthly savers may coast slightly later than annual contribution model shows because intra year contribution timing affects compound path materially near coast age boundary. Coast number equals present value of future retirement nest egg discounted at expected return minus current portfolio value showing how much more accumulation needed before stopping contributions. Part time income covering current expenses while portfolio compounds untouched accelerates coast date versus full employment with partial savings rate into same portfolio balance trajectory comparison scenario.

Use Coast FIRE Calculator whenever inputs change: after market moves, new contributions, or revised personal assumptions. Bookmark the page for quick reruns without installing software.

Enter current age, savings, expected return, retirement age, target nest egg, and annual contribution. Enter the sample inputs described in How it works to reproduce the scenario step by step.

Adjust one input at a time to see sensitivity. Coast FIRE Calculator updates instantly so you can stress test optimistic and conservative assumptions before acting.

Reach for Coast FIRE Calculator when find the exact age where you can stop saving and let compounding handle the rest.. It suits quick what if analysis before trades, allocation changes, or plan updates.

Pair with related tools when the decision spans taxes, liquidity, or multi year projections beyond what one formula captures.

Copying outputs without checking input units or stale market prices is a frequent error with Coast FIRE Calculator. Confirm tickers, percentages, and dates before acting.

Running a single baseline scenario ignores tail risks. Stress test with conservative inputs and compare against related tools listed below when the decision is material.

Compounds annually. Contributions stop at Coast FIRE age. Annual compounding ignores intra year contribution timing so monthly savers may coast slightly later. Annual compounding. Monthly savers may coast slightly later than model. Annual compounding. Monthly contribution timing may delay coast age slightly versus model. Monthly savers may reach coast age slightly later than annual contribution model shows due to intra year timing. Coast milestone reached when portfolio growth alone without new contributions projects to cover traditional FIRE number at target retirement age using compound interest formula with conservative return assumption below historical equity average for safety margin in planning spreadsheet model tab labeled coast check. Coast FIRE Calculator does not replace personalized advice. Fees, slippage, account specific rules, and behavioral constraints may change real world outcomes.

Compare full FIRE timeline with Time to FIRE Calculator and part time bridge with Barista FIRE Calculator on portfolios. Use those calculators when coast fire calculator alone does not capture the full decision.

Internal links on portfolios.tools help you chain calculators: run Coast FIRE Calculator first, then validate edge cases with a specialized tool from the related section below.