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How Much Bitcoin Do You Need to Retire?

This is the million-satoshi question. Let's break down exactly how much Bitcoin you need to achieve financial independence.

Find Your Number

Skip the math — use our calculator to get your personalized target.

Calculate Now →

The Basic Formula

Your Bitcoin FIRE number depends on one key question:

How much will you spend annually in retirement?

Then apply the 4% rule: Annual Expenses × 25 = Total Needed

Example Scenarios

🟢 Lean FIRE: £20,000/year

Total needed: £500,000

~6.5 BTC

(at £75,000/BTC)

🟡 Regular FIRE: £40,000/year

Total FIRE: £40 needed: £1,000,000

~13 BTC

(at £75,000/BTC)

🔴 Fat FIRE: £80,000/year

Total needed: £2,000,000

~27 BTC

(at £75,000/BTC)

Why Bitcoin Changes the Game

With traditional investments, you need to draw down your principal. With Bitcoin:

Appreciation potential — Your stack might grow, not shrink
No required withdrawals — Live off gains only
Partially spendable — Don't need to sell everything at once

Realistic Accumulation Paths

Option 1: Aggressive Accumulation

Buy £1,000/month of Bitcoin

5 years: ~4.5 BTC (£340K at £75K)

10 years: ~16 BTC (£1.2M at £75K)

Option 2: Moderate DCA

Buy £500/month of Bitcoin

5 years: ~2.25 BTC (£170K at £75K)

10 years: ~8 BTC (£600K at £75K)

Option 3: Starter Stack

Buy £100/month of Bitcoin

5 years: ~0.45 BTC (£34K at £75K)

10 years: ~1.6 BTC (£120K at £75K)

Key Variables

Bitcoin price — Obviously affects your target
Your savings rate — More = faster FIRE
Time horizon — Longer = more compounding
Withdrawal rate — 3% = safer, 5% = more aggressive

The Power of Sats

Remember: you don't need to buy whole Bitcoin. You can stack satoshis (sats) — the smallest unit of Bitcoin (0.00000001 BTC).

£10/month = ~2,800 sats/day

Over 10 years at 50% growth = ~0.5 BTC

Use Our Calculator

Our Bitcoin FIRE Calculator handles all these variables and projects your path to retirement.

Calculate Your Target →

Start Stacking Today

Whatever your target, the best time to start was yesterday. The second best time is today.

Open a Bitcoin exchange account
Set up recurring buy (DCA)
Move to self-custody when possible
Track progress with our calculator

Disclaimer: Bitcoin is highly volatile. These projections are hypothetical. Not financial advice.