Coast FIRE Calculator
Calculate how much you need saved today so compound interest alone carries you to Financial Independence — no additional contributions required.
Last updated: · Built by the IndepAI Team
Coast FIRE Calculator
Calculate how much you need saved today to coast to Financial Independence without additional contributions
Savings rate: 40.0%
What is Coast FIRE?
Coast FIRE is the point where your existing savings, left untouched to grow through compound interest, will reach your full Financial Independence number by your target retirement age. Once you hit your Coast FIRE number, you no longer need to aggressively save — you just need to earn enough to cover your current living expenses while your investments do the heavy lifting.
This makes Coast FIRE especially appealing to people who want flexibility earlier in life. Instead of grinding for decades to reach full FIRE, you front-load your savings and then shift to lower-stress work, freelancing, or passion projects — knowing your retirement is already funded by compound growth.
How the Coast FIRE Calculator Works
The Formula: Coast FIRE Number = FI Target ÷ (1 + Real Return)^Years to Retirement. This calculates the present value of your FI target — how much you need today for compound growth to reach your goal by retirement age.
Real Return: Your real return is your expected nominal investment return minus inflation. If you expect 7% nominal returns and 3% inflation, your real return is approximately 4%. This ensures your Coast FIRE number accounts for the eroding effect of inflation.
Target Retirement Age: The age at which you want your investments to reach your full FI number. A later target age means a lower Coast FIRE number today, since your money has more years to compound. Every additional year of compounding significantly reduces what you need saved right now.
Coast FIRE Tips for Digital Nomads
- 1. Front-load savings in your 20s-30s: The earlier you hit your Coast FIRE number, the more years compound interest works for you. Aggressive saving early lets you switch to lower-stress remote work once you coast.
- 2. Use geo-arbitrage to minimize expenses while coasting: Once you hit Coast FIRE, you only need to cover current living costs. Living in Chiang Mai, Lisbon, or Medellín means you need far less income than in London or New York.
- 3. Consider Barista FIRE as a complement: Part-time remote work covers expenses while your investments grow untouched. Pair Coast FIRE savings with part-time freelancing for a comfortable coasting phase.
- 4. Track your Coast FIRE progress annually: Market returns may let you coast earlier than expected. Recalculate yearly — a strong bull market could move your Coast FIRE date forward by several years.
Related Reading
What is Coast FIRE? The Strategy That Lets You Stop Saving
A comprehensive guide to Coast FIRE: how it works, the math behind it, and strategies for digital nomads.
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Frequently Asked Questions
What is Coast FIRE?
Coast FIRE is the point where your current savings, left to grow through compound interest, will reach your full FI number by a target retirement age — no additional savings required. Once you hit Coast FIRE, you only need to earn enough to cover current living expenses.
How is the Coast FIRE number calculated?
Coast FIRE Number = FI Target / (1 + real return rate)^years to retirement. It's the present value of your FI target, discounted by your expected real investment return over the years remaining until your target retirement age.
What's the difference between Coast FIRE and regular FIRE?
Regular FIRE requires enough invested to cover all expenses from investments today. Coast FIRE means you've saved enough that compound growth alone will get you to FI by retirement — you only need to cover current expenses with work income, not save anything additional.
Can I still work after reaching Coast FIRE?
Yes. Coast FIRE means work is optional for savings purposes — you can work a lower-stress job, freelance, or pursue passion projects. You just need to cover current living expenses while your investments compound to your full FI number.
How does Coast FIRE work for digital nomads?
Digital nomads can leverage geo-arbitrage to reduce current expenses, making it easier to cover living costs after reaching Coast FIRE while their investments compound. Living in lower-cost countries means you need less income from work while coasting.