How Much Do I Need to Invest to Make $1,000 a Month?

Short answer: $1,000 a month is $12,000 a year, so divide $12,000 by the yearly rate your money pays out. At 4% you need about $300,000 invested; at 3%, $400,000; at 5%, $240,000. Building $300,000 from zero with $1,000 a month at a hypothetical 7% a year takes about 14.5 years. Before tax, hypothetical, not guaranteed. Educational content only. Not financial advice.

“How much do I need to invest to make $1,000 a month?” has a one-line formula behind it. The hard part is picking an honest rate, remembering taxes and inflation, and knowing how long it takes to build the pot. Here is all of it.

The formula: $12,000 ÷ your rate

Amount needed = yearly income you want ÷ yearly payout rate. For $1,000 a month, that is $12,000 ÷ rate. The rate can be an interest rate, a dividend yield, or a withdrawal rate you plan to take from a portfolio.

Yearly rate (hypothetical)	Invested amount needed	Income per year
2%	$600,000	$12,000
3%	$400,000	$12,000
4%	$300,000	$12,000
5%	$240,000	$12,000
6%	$200,000	$12,000
8%	$150,000	$12,000

Why 4% is the usual planning number: it comes from the “4% rule,” based on William Bengen’s research (Journal of Financial Planning, October 1994) on historical US stock and bond returns, which found that withdrawals starting at 4% of a portfolio, raised each year for inflation, lasted at least 30 years in every period he studied. It is a rule of thumb, not a promise. We break it down in Coast FIRE and the 4% rule.

Rates on savings accounts, bonds and dividends change all the time, so plug in today’s rate rather than a number from an article. If the money sits in cash, see how high-yield savings accounts work.

Worked example: building the $300,000

Inputs: a $300,000 goal (the 4% number), deposits at the end of each month, a hypothetical 7% average yearly return after inflation, compounded monthly, no taxes or fees. This is the same math the FIRE number calculator uses, so you can rerun it with your own numbers.

You invest per month	Starting from $0	Starting from $50,000
$500	about 21 years 7 months	15 years
$1,000	about 14 years 6 months	about 10 years 10 months
$1,500	about 11 years 1 month	about 8 years 7 months
$2,000	about 9 years 1 month	about 7 years 1 month

Two takeaways: doubling your monthly amount from $500 to $1,000 cuts about 7 years off, and a $50,000 head start saves anywhere from about 2 years (at $2,000 a month) to about 6½ years (at $500 a month). Because the return here is after inflation, the $300,000 and the $1,000 a month are both in today’s dollars.

Assumptions: end-of-month deposits, monthly compounding at a constant 7% real return, no taxes or fees. Real markets go up and down. Examples are hypothetical, not guaranteed.

Three things that change the number

1. Taxes

Interest, dividends and most retirement-account withdrawals can be taxed. To keep $1,000 a month after a hypothetical 15% tax, you need about $1,176 a month before tax, which takes about $352,941 at 4% (or about $470,588 at 3%). Roth accounts can help here; see Roth IRA vs traditional IRA.

2. Inflation

A fixed $1,000 a month buys less every year. At a hypothetical 3% inflation rate, $1,000 in 25 years buys what about $478 buys today, and you would need about $2,094 a month to match today’s $1,000. That is why the worked example above uses a return after inflation.

3. Spending the principal too

If you are willing to draw the pot down, you need less. Withdrawing $1,000 at the end of each month, with the rest earning a hypothetical 5% a year:

• $240,000 lasts indefinitely (5% of $240,000 is exactly $12,000 a year, so the balance never shrinks).
• $200,000 lasts about 35 years 11 months.
• $150,000 lasts about 19 years 8 months.

At 4% instead, $200,000 lasts about 27 years 7 months. Hypothetical, not guaranteed.

How to get started

Start with the monthly amount you can automate, then let time do the work; how to start investing money walks through the order of steps. To watch a monthly amount grow year by year, open the compound interest calculator, and to set your own income goal, use the FIRE number calculator.

Educational content only. Not financial advice. Examples are hypothetical, not guaranteed. Taxes, rates and account rules vary; check current figures for your situation.

Questions people ask