The 4% rule was built for a 30-year retirement. Yours may last 50.
Retiring at 45 or 55 changes the math. Here is what the 4% rule really says, why it gets risky over long retirements, and how dynamic spending gets more income out of the same savings while making them last. Built for people whose money, taxes and family span more than one country.
You did the hard part. You saved, you quit. So why can't you sleep?
Reaching financial independence feels like the finish line. For most early retirees it's where the anxiety starts: no more salary, decades ahead, and one number standing between you and going back to work. Your monthly paycheck.
"I quit at 32. Every red day on the market I open my spreadsheet again. Is 4% really safe for sixty years?"
"Two kids, college in eight years, a car that won't last. My calculator gives me one monthly number and ignores all of it."
"I can finally stop. But until 59½, Medicare and Social Security, which account do I even draw from first?"
The questions we kept asking ourselves, and still hear from every early retiree we meet.
The expenses your calculator forgot
Most retirement calculators assume life costs the same every month, forever. Real life doesn't. College tuition, a new car every eight years, a roof, a wedding, helping a parent, a move abroad: none of it shows up in "4% a year", yet together it can swallow more than a third of a portfolio.
Spend your paycheck without planning for them and you find out the hard way, in the year the bill arrives, usually right after a crash.
- College for two children (public, in-state)$248,000
- Four car replacements$60,000
- A wedding$35,000
- A new roof$30,000
- Moving to another country$25,000
Your retirement paycheck, planned for a life across borders
Bordo is personal finance software for early retirees. It turns your savings into a monthly paycheck you can trust: how much to spend this month, where to take it from, what's coming up, and whether it lasts, in dollars and euros, wherever you live.
It's built for the whole journey: while you're still saving, the year you stop working, and every month after.
Your monthly paycheck
Dynamic spending sets this month's amount from your real portfolio, with the next pay date, in dollars and euros.
Your future paycheck
Still saving? See what your savings could pay you at 50 or 55, tested on 2,000 market paths, and what saving more or retiring later changes.
Big expenses, planned
College, cars, a roof, a move abroad: each is paid in the month it falls due, on top of your paycheck, so none of them surprises you.
Social Security and pensions
Estimates what the US and France will pay you, including what stopping work early does to your benefit.
Taxes across borders
US federal tax, French income tax and health contribution, the UAE, treaties and withholding, set by your citizenship and where you live.
All your accounts
Import from Schwab, Fidelity, Vanguard, IBKR and 20+ brokers: holdings, tax lots, dividends, and which shares to sell for your paycheck.
Stress-tested
Every plan is tested on 150 years of market history and on the latest Vanguard, J.P. Morgan and Schwab forecasts, checked daily.
Private by design
Your files are read in your browser and never uploaded. No ads, no trackers, nothing to sell you.
- Answer a few questionsAbout 5 minutes. Rough numbers are fine.
- Add your accountsImport your broker files, or keep rough totals for now.
- Get your paycheckThen come back each month: Bordo keeps it on track.
The 4% rule, in one minute
In 1994 financial planner William Bengen tested every 30-year retirement in US market history. He found that if you withdraw 4% of your portfolio in the first year, then take the same amount plus inflation every year after, no matter what markets do, the money lasted 30 years even for people who retired just before the worst crashes.
With $1,000,000 you would spend $40,000 the first year, about $41,200 the next if prices rose 3%, and so on. Your income is perfectly steady. Your portfolio is not: it absorbs every crash.
The rule is a stress test, not a law. Morningstar now puts the safe starting rate for a 30-year retirement at 3.9% (90% success, 30–50% in stocks), and it moves with market valuations and interest rates.
Why early retirement is different
The 4% rule answers one question: how much can you spend for 30 years without ever adjusting? Early retirees face a longer road, with obstacles the original study did not consider.
A much longer horizon
Each extra decade adds more bad markets to survive. Research on 50- and 60-year retirements points to safe fixed rates closer to 3.25–3.5%.
Sequence-of-returns risk
A crash early on, while you are selling to live, does lasting damage: the shares you sell cheap never recover for you. A fixed withdrawal keeps selling through the whole downturn.
Money you can't touch yet
401(k) and IRA withdrawals before 59½ usually cost a 10% penalty. You need taxable savings, Roth contributions, the age-55 rule, 72(t) payments or a Roth conversion ladder to bridge the gap.
Health care and Social Security come late
Medicare starts at 65 and Social Security at 62 to 70, so early retirees pay for health insurance and live on savings alone for longer.
The good news: early retirees usually have room to adjust. Spending a little less after a bad year is far cheaper than starting with a tiny withdrawal rate forever. That is exactly what a dynamic rule does.
Dynamic spending
Dynamic spending, a rule that came out of retirement research, is a middle path between "same income no matter what" and "a fixed percentage of whatever is left" (which keeps your money forever but makes your income swing wildly). Each year your income follows the portfolio, within guardrails set by last year's spending.
- Start with a percentage of your portfolioFor example 4% of $1,000,000 = $40,000 a year.
- Each year, recalculate the targetThe same percentage of what the portfolio is worth now.
- Cap the raiseSpending can rise at most 5% above last year's (plus inflation), even after a great year.
- Limit the cutSpending falls at most 2.5% below last year's (plus inflation), even after a crash.
Inflation left out to keep the example simple. In a crash you cut a little and keep most of your lifestyle; in a boom you bank most of the gain for the next bad year.
It maximizes your income, not your leftovers
The 4% rule is sized for the worst decade in history, so in most retirements it pays the same small check while the portfolio piles up money you never spend. Dynamic spending passes good years on to you, a little at a time, and still cuts back before the money runs out. Replaying every retirement since 1871, both starting at 4% of $1,000,000:
| Retirement lasts | 4% rule typical income | Dynamic spending typical income | Ran out of money | Typically left unspent |
|---|---|---|---|---|
| 30 years | $40,100 a year | $48,900 a year (+22%) | 4% rule 4 of 125 · dynamic 0 | $1.33M vs $1.19M |
| 40 years | $40,100 a year | $46,700 a year (+17%) | 4% rule 10 of 115 · dynamic 0 | $1.46M vs $1.01M |
Median yearly income over the whole retirement and median money left at the end, in today's dollars, across every January start with full history. 60% US stocks, 40% 10-year Treasuries, no fees or taxes. The dynamic rule's income also dips in bad decades: see the replay below.
Why it lasts longer
Spending less after crashes means selling fewer shares at low prices: exactly the sequence risk that breaks the 4% rule.
Why it pays more
Because it adapts, it can start higher and rise with the markets. Research by Vanguard and Morningstar finds flexible rules support more spending than a fixed 4% for the same risk.
What it asks of you
Your income moves, and after a long bad stretch it can drift well below where it started. Cover essentials with steady income or a cash reserve.
Replay history: fixed 4% vs dynamic
Pick a year to retire in and a length of retirement. Both retirees start with $1,000,000 in 60% US stocks and 40% 10-year Treasuries, and take 4% the first year. Everything is in constant dollars of the year you retire, so a flat line means the same purchasing power.
Portfolio value
Yearly spending
Monthly S&P 500 total returns (Robert Shiller's data), 10-year Treasury returns and US inflation, 1871 to today. No fees or taxes; rebalanced monthly. Past markets don't predict future ones.
Which one is better for you?
Neither rule is free. The 4% rule buys a steady paycheck with the risk of running out; the dynamic rule buys staying power with an income that moves. For most early retirees, with long horizons and some room to adjust, the dynamic rule is the better trade.
| 4% rule | Dynamic spending | |
|---|---|---|
| Lifetime income | Capped at day one's amount, plus inflation | Typically 17–22% more, from the same savings |
| Your income | The same every year, plus inflation | Follows the markets, within +5% / −2.5% a year |
| Risk of running out | Low over 30 years, rising sharply over 40–60 | Much lower: spending shrinks before the portfolio does |
| After a crash | Keeps selling the same amount at low prices | Cuts a little, sells less |
| After a boom | Often leaves a large unspent fortune | Lets you share in the gains, gradually |
| Best for | Short retirements, fixed bills, no room to adjust | Long retirements, flexible budgets, early retirees |
Built for a life across borders
More and more of us earn in one country, save in another, marry across borders and retire somewhere new. Reaching financial independence often is the moment people move: to live better on the same savings, closer to family, or simply somewhere they love. That is geographic arbitrage, and today's tools ignore it.
We have lived it. We reached financial independence and moved between the US and Europe: two tax systems, two currencies, accounts that don't like to cross borders, and families on both sides of the ocean. We built the tools we wished we'd had.
That is why we started the CrossBorder Wealth and FIRE Network. We are building the most complete wealth, finance and estate planning platform for the international community: one place to plan your money when your passport, your accounts, your taxes and your heirs are not all in the same country, and a community of people who have done it before you.
Taxes where you live and where you're from
US citizens are taxed by the US wherever they live; everyone else by their country of residence. The planner applies both, with the treaties in between: US federal tax, French income tax, social levies and the PUMa contribution, the UAE's zero income tax, and the right US withholding for non-citizens.
Two currencies, one plan
Your accounts may be in dollars while your rent is in euros. Every paycheck shows in both, at the central-bank rate, updated daily.
Geographic arbitrage, planned
Move the same savings to a country where life costs less and your safe paycheck buys more. Change your country of residence and see your taxes, health contributions and life expectancy change with it.
Estate planning across borders
Coming next: what your heirs would owe in each country, US estate tax for non-US citizens (whose exemption on US assets is only $60,000), French inheritance rules, and how to hold accounts so your family isn't caught between two systems.
Where our community lives and retires
Taxes, pensions and residency for each country, one at a time. Tell us where you're headed and we'll know where to go next.
- 🇺🇸United States
- 🇫🇷France
- 🇦🇪UAE
- 🇵🇹Portugal
- 🇬🇧United Kingdom
- 🇩🇪Germany
- 🇮🇹Italy
- 🇬🇷Greece
- 🇪🇸Spain
- 🇲🇽Mexico
- 🇨🇷Costa Rica
- 🇵🇦Panama
- 🇮🇳India
- 🇵🇰Pakistan
- 🇨🇳China
Also on the way: estate and inheritance planning across borders, and comparing where to retire side by side (taxes, cost of living, currency risk).
Join the Bordo Community
Explore the options that can support you on your international journey: trusted help with taxes in two countries, residency and visas, moving money, health insurance abroad and estate planning, country guides, and soon a forum to meet people who have already made the move.
- Free to join, one email a week at most
- Tell us where you're headed: it decides which countries we add next
- First access to the forum when it opens
This week across borders
Bordo gathers the news that matters when you retire early in another country: the FIRE community (ESI Money, Financial Samurai, Mad Fientist, Go Curry Cracker and more), expat tax and residency and golden visas. Pick your country and see what changes for you.
Run the dynamic rule on your own portfolio
Answer a few questions (rough totals are fine) and Bordo turns dynamic spending into a monthly paycheck from your savings, tested against history and today's forecasts.
Start the 5-minute setup →- Import your broker files (Schwab, Fidelity, IBKR, Vanguard and more)
- Your monthly withdrawal, with the ceiling, floor and a maximum
- "How much can I spend?" tested on 150 years of markets and on Vanguard, J.P. Morgan and Schwab forecasts
- Penalty-free access before 59½, required distributions and taxes for US, France and UAE residents
- Dollars and euros side by side, for a life across borders
Your data stays private. Files you import are read inside your browser and never uploaded. No ads, no trackers, no account to sell you anything. This is an educational tool, not financial advice.