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Early retirement made simple: five rules to set your target age, find your number with the 4% rule, invest on autopilot, and keep your plan on track.
The bills are paid. You're putting something into a 401(k). But when someone asks when you could stop working, the honest answer is "no idea, 67 I guess?" That gap between doing fine and knowing your finish line is what keeps early retirement feeling like something only other people get to plan.
Retiring early doesn't start with a bigger salary. It starts with a number: how much you need invested to cover the life you want, and how far you are from it today. Once you can see both, every raise, bonus, and investing decision has a clear job. These five rules walk you from a vague idea to a plan you can check once a year.
Why most people never pick a retirement date
Most people save "whatever is left over" and hope it adds up. The problem is that a vague goal never tells you whether you're on track. You can be saving every month and still not know if you'll be ready at 50, 60, or 70.
It also helps to compare yourself to the right number. When you read about "average" retirement savings, a small number of very large accounts pull the average up. The median, the middle household, is usually much lower and closer to where most people actually are. The Federal Reserve's Survey of Consumer Finances reports both, which is why the gap between the two is worth knowing before you judge your own balance.
None of this means early retirement is out of reach. It means the plan has to start with your own number, not a headline. If you're still deciding whether planning this far ahead is worth it, why it pays to plan for retirement makes the case.
Rule 1: Define what early retirement means for you
You can't hit a target you can't see. Before any math, write down three things:
- The age you want to stop working full time. Early retirement doesn't have to mean 35. For a lot of people it means 55 instead of 67, or the freedom to switch to part-time work in their 50s.
- The life you want once you stop. Do you want to travel a lot, pick up an expensive hobby, live simply, or help family? This isn't about luxury vs. frugality. It's about knowing what the money has to pay for.
- Where you want to live. Housing, taxes, and everyday costs vary a lot by location, and they change how much you need.
Write rough yearly costs next to each item. They'll be guesses, and that's fine. A rough number you can adjust beats a perfect number you never write down. The Rich Life Roadmap is a good place to sketch this out.
Rule 2: Know where you stand today
You can't close a gap until you know how big it is. Start with your net worth: add up what you own (savings, investments, retirement accounts, home equity) and subtract what you owe.
Then pull out the part that counts toward retirement. Your investable assets, the money in retirement accounts and brokerage accounts, is what will actually fund the plan. A car or a home you live in adds to net worth, but you can't sell it to pay the electric bill in retirement.
This is a snapshot, not a grade. The point is to have a real starting line so you can measure progress every year.
Rule 3: Find your early retirement number
This is the step most people skip, and it's the one that makes everything else make sense.
A common starting point is the 4% rule. It comes from research on historical U.S. market returns, and it says that withdrawing about 4% of your portfolio in the first year of retirement, then adjusting that dollar amount for inflation each year, held up over 30-year retirements in the past. Flip it around and you get the multiply-by-25 rule: your target is about 25 times what you expect to spend each year.
As an illustration, if you expect to need $52,000 a year from your investments, $52,000 × 25 = $1.3 million.
A few things to keep in mind:
- The 4% rule was built for about 30 years. If you retire at 45, your money may need to last 40 years or more. Many early retirees plan with a lower withdrawal rate, which means a bigger target.
- Subtract other income. If you expect a pension, rental income, or part-time work, your investments only have to cover the rest.
- Social Security starts later. You can claim as early as 62, with a smaller monthly check. Check your own estimate at ssa.gov instead of guessing.
- Plan for health insurance. Medicare generally starts at 65, so an early retiree needs to plan for the cost of coverage in the years before that.
- Plan for account access. Most retirement accounts have penalties for withdrawals before 59½, with exceptions. The difference between a 401(k) and a Roth IRA explains how each one handles early withdrawals.
The retirement calculator lets you test your target age, savings, and spending to see how far off you are.
Rule 4: Build an investing plan that runs without you
You won't close a big gap by working more hours alone. Money sitting in checking or savings is safe, but it isn't growing enough to get you there. The money that funds early retirement has to be invested.
The plan itself can be simple:
- Choose diversified, low-cost investments. Broad index funds or ETFs let you own a slice of thousands of companies without picking stocks, and low fees leave more of the return for you.
- Automate your contributions. Set a fixed amount to move into your accounts every payday, so investing happens whether or not you're thinking about it.
- Adjust your mix as you get closer. Your asset allocation, the split between stocks, bonds, and cash, should usually get more conservative as your date approaches, so one bad market year near the finish line doesn't wreck the plan.
Time does a lot of the work. The earlier the money goes in, the longer compound interest has to grow it. The compound interest calculator shows what a monthly contribution could grow to at an assumed return, and the investing order of operations shows which accounts to fill first.
Rule 5: Review your plan once a year
A retirement plan isn't set once and left alone. Your income changes, your goals change, and markets move. If you never check, a plan can drift off course without you noticing.
Put a yearly review on your calendar, and do one after any big life change like a new job, a move, marriage, or kids. Each time, check:
- your net worth and investable assets against last year
- your yearly spending estimate, since it sets your target number
- whether your contributions went up with your income
- whether your investment mix still fits your timeline
This is the step where a raise becomes progress instead of just a bigger lifestyle. If your income went up this year and your contributions didn't, that's the first thing to fix.
How to get started this week
- Write down your target age, the life you want, and where you want to live, with rough yearly costs.
- Add up your net worth and your investable assets.
- Multiply your expected yearly spending by 25 to get a rough target.
- Open an investing account if you don't have one, and start with a broad index fund.
- Automate a monthly contribution, even a small one, and set a reminder to raise it after your next raise.
If you want a slower version of early retirement, where you stop saving for retirement at some point and let what you have grow, read how to retire early by investing, which explains Coast FIRE.
The number the video covers next
This five-rule system is the foundation. The video also introduces one more number, your CoFI number, which makes the rest of these money decisions easier. Watch the full video above for that part.
FAQ
What if I'm starting late with early retirement planning?
Starting late means you have fewer years for compounding, so the levers are a higher savings rate, a later target date, or a smaller yearly spending number. Even a few extra years of contributions and growth can close a meaningful part of the gap. Use the retirement calculator to test which lever helps you most.
How much should I invest each month to retire early?
There's no single right percentage. The earlier you want to stop working, the higher the share of your income you'll need to invest. Work backward from your target number and timeline in the retirement calculator, then raise your contribution each time your income goes up.
Is the 4% rule still reliable for early retirement?
It's a useful starting point, not a guarantee. It was based on 30-year retirements, so if you plan to retire early and need your money to last longer, a lower withdrawal rate and a bigger target give you more room. Review it every year instead of setting it once.
What if the market drops right before I retire?
This is why your investment mix should get more conservative as your date gets closer. Keeping some money in cash or bonds means you're not forced to sell stocks in a downturn to pay your bills. The market drops glossary entry explains what usually happens and how people plan for it.
Can I count on Social Security if I retire early?
You can plan for it, but not as your main source. It's designed to replace only part of your working income, and early retirees have years before they can claim. Check your personal estimate at ssa.gov and treat it as one piece of the plan.
What to do next
Same retirement goal, different first step. A Strategist might need to send the next raise straight to investing, while a Saver needs to move cash that has been sitting still for years. Your Money Type shows which step you're most likely to skip.
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Education only. Not investment, tax, or financial advice. The 4% rule and the figures in this article are rules of thumb and illustrations, not predictions or guarantees. Talk with a licensed professional about your situation. Reviewed as of October 2026.
You made it to the end. That's a Strategist doing research with a purpose.
