How to retire early: Key considerations

How to plan for early retirement

An early retirement plan often starts with an estimate of the savings needed to support planned spending. That estimate is often based on a withdrawal rate assumption, which is the percentage of savings that might be withdrawn each year to manage the risk of running out of funds.

For illustration only, one rule of thumb is:

Target savings = annual expenses ÷ withdrawal rate

If your planned spending is EUR 40,000 a year and you expect to withdraw 4%, the calculation is:

EUR 40,000 ÷ 0.04 = EUR 1,000,000

At a more cautious 3% rate, the maths becomes:

EUR 40,000 ÷ 0.03 = EUR 1,333,333

The 3% and 4% withdrawal-rate examples are commonly linked to historical withdrawal-rate research, including the Trinity Study by Philip L. Cooley, Carl M. Hubbard, and Daniel T. Walz. The study used historical assumptions and should not be treated as a guarantee, especially for early retirements that may last longer than 30 years.

That’s why some early retirement plans use a rule of thumb of roughly 25 to 33 times annual expenses, but this is only an estimate and depends on asset mix, fees, taxes, inflation, spending flexibility and how long the money must last.

These numbers aren’t guarantees, but they help illustrate the scale of savings involved and show how changes in spending, saving or returns can affect the timeline. It’s also worth remembering that early retirees face longevity and sequence-of-returns risk: if markets fall early in retirement, drawing from your portfolio while it’s down can permanently reduce what you have later, and your money may need to last for several decades.

Saving and investing for early retirement

An early-retirement plan usually separates short-term security from long-term growth. Cash savings can cover emergency costs, planned spending, and near-term needs, while investments are generally used for longer-term needs.

Cash may provide access and stability, but its purchasing power can be reduced by inflation. Investments such as diversified funds or retirement accounts may offer growth potential, but they can fall in value, and returns are uncertain. Fees, taxes and product rules can also affect how much is available later.

The balance between cash and investments depends on your income, spending, time horizon, access to pensions or retirement accounts, risk tolerance, and the length of the planned retirement. Clear separation between near-term cash needs and long-term invested assets can make the plan easier to assess, but it cannot remove investment or longevity risk.

Planning for early retirement around 40

Retiring at 40 is one of the most demanding early-retirement scenarios because savings may need to support spending over several decades. Those aiming for it often start saving early and treat financial independence as a long-term project, guided by an estimate of annual spending.

A high savings rate is usually central to this type of plan. Their portfolios may lean towards growth-focused assets, such as global equities or index funds, which aim to deliver long-term growth, but returns are not guaranteed, past performance is not a reliable indicator of future results, and volatility can be significant.

Spending choices also matter because lower fixed costs and reduced debt can reduce the income a portfolio may need to support later.

Retiring this early does not always mean stopping work entirely. It means reaching a point where paid work becomes optional. Some people turn to creative projects, part-time consulting, or simply taking extended breaks between ventures. The aim is to reduce reliance on paid work, although costs, markets and personal circumstances can still change.

Planning for early retirement around 50

For many people, early retirement around 50 may feel more realistic than retiring at 40. Earnings may be higher, debts may be lower, and annual spending patterns may be clearer, though these vary widely by household.

Planning at this stage often involves testing whether the target savings figure can support expected spending, tax, inflation, healthcare costs and market volatility. For illustration only, someone expecting to spend EUR 50,000 annually would need roughly EUR 1.43 million at a 3.5% withdrawal rate or EUR 1.52 million at a 3.3% withdrawal rate, before taxes, fees, inflation, healthcare costs, and market performance.

Reducing liabilities may strengthen the plan because lower debt payments can reduce future expenses and the amount of income savings needed each year. A bridge fund made up of accessible savings or investments may help cover the years before pensions or age-restricted accounts become available.

Planning at this stage also means allowing for healthcare costs and inflation, which can both increase the amount needed each year. These assumptions should be reviewed regularly, because costs may rise faster than expected and investment returns may not keep pace.

Reaching financial independence around 50 may create more flexibility, but future costs, market performance and personal circumstances can still create financial pressure.

Conclusion: Planning ahead for early retirement

Early retirement can create more flexibility over how time is spent, but it also brings a longer planning period and more uncertainty. The numbers matter because spending, returns, inflation, tax, healthcare costs and life expectancy can all affect whether a plan remains sustainable.

A useful early retirement plan is usually built around estimated annual spending, a withdrawal-rate assumption, accessible savings, long-term investments and contingency planning. These assumptions should be reviewed as markets, costs and personal circumstances change.

Overall, financial independence may create more choices, but it does not remove financial pressure. Investment outcomes are uncertain, and costs and life plans can change over time.