How to use WalletBurst Coast FIRE Calculator ?

1. Enter your current age and target retirement age
2. Add your expected annual spending in retirement
3. Enter your current invested assets (not cash savings)
4. Adjust the sliders for your expected investment return rate (default 7%), inflation rate (default 3%), and safe withdrawal rate (default 4%) – and watch the graph update live

What is the WalletBurst Coast FIRE Calculator?

The WalletBurst Coast FIRE Calculator is a free, interactive tool that helps you calculate your exact Coast FIRE number – the amount you need to have invested today so that compound growth alone will carry you to full financial independence by retirement age, with zero additional contributions required.

Simply enter your current age, the age you plan to retire, your expected annual spending in retirement, your current invested assets, and your investment return rate. The calculator instantly shows you your Coast FI number and draws a real-time graph of your projected net worth over time.

What makes this calculator different?

Unlike basic FIRE calculators, the WalletBurst Coast FIRE Calculator builds inflation directly into every calculation. Rather than asking you to manually adjust for inflation, it subtracts your inflation rate from your investment return rate to produce a true inflation-adjusted result – meaning every number you see is in today’s dollars, making your plan far more realistic and accurate.

What your Coast FIRE number means

Your Coast FIRE number is the financial milestone that unlocks a completely different relationship with work. Once you reach it, you no longer need to save aggressively. You only need to earn enough to cover your living expenses – giving you the freedom to switch to a lower-stress job, go part-time, start a passion project, or simply stop worrying about money every month.

Who is this calculator for?

This tool is built for anyone pursuing financial independence – especially people in their 20s and 30s who want to take advantage of compounding early. The younger you start, the lower your Coast FIRE number, because time does the heavy lifting. Whether you’re just starting your FIRE journey or already deep into saving, this calculator gives you a clear, honest picture of where you stand today.

Why Your Coast FI Number Matters More Than You Think

Most people focus on their full FIRE number – but your Coast FI number is the real game changer. It is the first major milestone that actually changes your daily life. Once you hit it, every morning you wake up knowing your retirement is already funded – compound growth is doing the work for you, silently, in the background.

The WalletBurst Coast FIRE Calculator makes this number visible and real. Instead of staring at a $1,000,000 goal that feels impossible, you see a smaller, achievable number – one that could be just a few years away.

The Power of Starting Early

The earlier you use the WalletBurst Coast FIRE Calculator, the lower your Coast FI number will be. A 25-year-old needs far less invested than a 40-year-old to reach the same retirement goal – because time and compound interest do the heavy lifting.

Even small amounts invested consistently in your 20s can hit your Coast number faster than you expect. Run your numbers today – the results might surprise you.