Living off your investments: how much money do you really need?

Start with the question you still have open

What I mean by living off your investments

I use the term for a person who pays their ongoing expenses mainly from existing wealth and from other income that is not tied to an active full-time job. It is not an official job title, and it is not a promise never to work again. The economic question is what matters: are your available capital and your other income enough to fund your life over the planned period?

The answer therefore does not start with a round million. It starts with your expenses. If you need $2,000 a month, your financial independence number is different from that of someone who needs $4,000. Health insurance, tax, later pensions, rental income and larger irregular expenses also belong in the calculation.

How much money do you need so that you no longer have to work?

For a first orientation, you can divide your annual funding need by an assumed initial withdrawal rate:

Target capital = annual need divided by withdrawal rate.

With $3,000 a month, the annual need is $36,000. Divided by 4%, that gives $900,000. At 3.5% it is around $1,028,600, at 3% exactly $1,200,000.

The monthly need here is the amount your assets have to provide before personal deductions. If it is to cover $3,000 of freely available money, tax and insurance contributions may come on top. The table assumes a constant need. It does not yet take into account a later pension or your personal tax or insurance situation. That is exactly why it is the start of the planning and not its result. You can calculate your own first number in the financial independence calculator.

Living off your investments abroad

Where you live changes your monthly need. A different rent can shift your financial independence number considerably. If you emigrate, residency, health insurance, moving costs and your individual tax and contributions calculation also enter the plan.

The first country articles show itemized sample budgets for this, each with a small capital calculator. The budgets are disclosed planning assumptions, not guaranteed living costs:

• Living in Thailand: housing, visa, insurance and expenses in baht.
• Living in Spain: regional rent data, EU residency and healthcare cover before and after retirement.
• Living in Cyprus: housing costs, health budget and the limits of non-dom status.

The joint overview Retiring abroad on your investments compares these three countries using the same planning questions. What remains decisive is the concrete calculation for your household.

Working through specific levels of wealth

A round sum alone does not answer the retirement question. The following calculations show, for each level of capital, the initial monthly amount, typical life situations and the limits of the model:

The pages are not a series in which only the numbers are swapped. $100,000 is treated as a supplement and a short bridge. $300,000 combines part-time income with a later pension. $750,000 deals with the joint need of a couple. With one and two million, capital preservation and a very long planning horizon come into play.

From the amount you have to a long-term portfolio

If you are still building your capital, the question starts earlier. Liquidity, time horizon, risk budget and execution decide which part can be invested for the long term at all:

• Investing $20,000: separate the reserve from the long-term entry.
• Investing $30,000: compare a lump sum with fixed tranches.
• Investing $50,000: structure a core portfolio, satellites and rebalancing.
• Investing $100,000: connect a risk budget in dollars with your total wealth.
• Investing $200,000: separate several goals, each with its own time horizon.
• Investing $500,000: bring together accumulation, capital preservation and later withdrawal.

Using up your wealth by a certain age

You do not necessarily have to preserve all your capital permanently. In the Die with Zero calculator you set a planning age and calculate which monthly budget is possible until then. The remaining portfolio stays invested while you withdraw. An accumulation phase, a later pension, inflation and the remaining capital you want can all be set. The planning age is not a forecast of the end of your life. So also check a longer period and your own reserve.

Step 1: Record your real monthly need

Take twelve full months of your bank account and credit card transactions. Then split the expenses into four groups:

1. Ongoing fixed costs such as housing, insurance, transport and contracts.
2. Variable living costs such as food, travel and leisure.
3. Annual or rare expenses such as repairs, dental work, appliances and vehicles.
4. Charges that do not disappear when your employment ends, in particular health insurance, long-term care and possible taxes.

Annual expenses go into the monthly need divided by twelve. A car that costs $32,000 every eight years works out at $333 a month. If you leave out items like these, you build a precise calculation on an incomplete number.

Also calculate with the life you actually want to lead. A drastically reduced test figure can show how far your capital would go in an emergency. It only works as a long-term plan if you really accept that standard of living.

Step 2: Separate the time before and after your pension

Say, as an example, you stop working at 50 and receive a pension from 67. Then you have two different funding phases. In the first 17 years, your assets have to carry the full uncovered monthly need. From 67, the net pension reduces this gap.

Use the latest projection from your state or company pension provider as a starting point, not as a guaranteed net result. Taxes and contributions may later still be deducted from a gross pension.

Example: you need $3,000 a month and expect a net pension of $1,400 from 67. Before that, the gap to be funded is $3,000, afterwards $1,600. A single calculation with $3,000 for your whole life would be too high. A calculation with only $1,600 from today would be dangerously low. The financial independence calculator shows these two phases separately.

What the pension bridge means in dollars

Take an exit at 55, a pension starting at 67 and a full monthly need of $3,000. Twelve years are 144 months. Without return and inflation, $432,000 flows out before the pension starts. With a later net pension of $1,800, a monthly gap of $1,200 remains after that.

The $432,000 is only the payouts of the first phase. It does not yet answer which starting capital will carry both phases. For that, you have to take into account how the remaining capital develops and which reserve is still needed after your pension starts. The financial independence calculator shows the periods separately. For a combined path, switch to the Die with Zero calculator and also check longer durations there.

Step 3: Treat the withdrawal rate as a scenario

The 4% rule goes back to historical studies. William Bengen published his study “Determining Withdrawal Rates Using Historical Data” in 1994. The later Trinity study tested different withdrawal rates with historical US stock and bond data.

The number is not a law of nature. The Trinity authors calculated without tax and transaction costs. The results relate to historical time windows, specific portfolio mixes and a limited duration. If you start living off your investments very early, you may be planning for 40 or 50 years instead of 30.

So calculate at least three variants. With 4% you get a rough starting figure. With 3.5% and 3% you see how much additional reserve a more cautious assumption requires. Then check your actual monthly withdrawal in the retirement withdrawal calculator. The background and the research behind it are in the guide to the 4% rule.

Step 4: Plan for the taxes where you live

All figures on this page are before taxes. How gains, dividends and withdrawals are taxed depends on the country you live in. Start from the net amount you need and add the taxes on top, not the other way round. Check the rules where you live, or ask a tax advisor.

Step 5: Do not set health insurance at zero

After your employment ends, the income on which contributions are calculated and who pays which share can change. A flat figure from the internet is not enough for this.

Health insurance and other contributions can reduce your net income. Include them in your monthly costs. So before you finally stop working, get written confirmation of your specific insurance status and of how your premiums or contributions are calculated. The full cost belongs in your monthly need.

Step 6: Plan for weak market years

A constant average return is a calculation aid. A real portfolio develops unevenly. Losses at the start of the withdrawal phase are particularly problematic, because you have to sell more units to fund your expenses. These units can no longer take part in a later recovery.

The retirement withdrawal calculator shows an even model return and discloses this limitation. Also check which expenses you could cut in weak years and which reserve should be available outside volatile investments. The size of this reserve is a personal risk decision and not a universal number.

Step 7: Check your plan before you finally stop working

A robust plan for living off your investments answers seven questions with concrete numbers:

1. How high were your total expenses over the last twelve months?
2. Which expenses change once you stop working for a living?
3. What do health insurance and long-term care cost in your actual status?
4. Which reliable income starts at what point?
5. How much capital is available to you today, net of debt?
6. What do withdrawals and remaining capital look like under several return and inflation assumptions?
7. Which expenses can you temporarily cut if the market gets off to a bad start?

Run the numbers first in the financial independence calculator and then in the retirement withdrawal calculator. Then add the taxes that apply where you live. Only the combination of need, income staggered over time, withdrawal and tax gives you a usable working plan.

Sources and date of review

The withdrawal history is based on the original work of William Bengen and of Cooley, Hubbard and Walz. All figures are before taxes. Tax, pension and health insurance rules depend on the country you live in and are not covered in detail here. The calculation examples are my own model calculations with disclosed assumptions.