Retirement Calculator

Project your nest egg and the monthly income it could provide in retirement.

30 yr
65 yr
$
$/mo
6.0%
Nest egg at age 65
$874,826
About $2,916/month in retirement income, using the 4% rule.
Monthly income (4% rule)
$2,916
You contribute
$230,000
Investment growth
$644,826
Years to grow
35 yr
Assumes a constant annual return compounded monthly until retirement. A planning estimate, not financial advice.
Savings growth to retirement
$1M$500k$0Start18yr35yr

Over 35 years, $500/month on top of $20,000 in current savings grows to $874,826 at 6.0% annual growth.

How the projection works

The calculator starts with your current savings and adds your monthly contribution every month between now and your retirement age, applying your expected annual return along the way (divided into a monthly rate and compounded each month). What's left at the end is your projected nest egg: the total you and your investment growth built together.

Reading the 4% rule

The monthly income figure comes from the 4% safe-withdrawal rule: a long-standing rule of thumb that says withdrawing 4% of a retirement portfolio per year, adjusted for inflation, has historically had a good chance of lasting 30 years without running out. Here it's spread evenly across twelve months, so nest egg times 4% divided by 12 gives a rough monthly income number. It's a starting point for a conversation, not a guarantee, since it depends on the sequence of market returns you actually experience early in retirement.

What this doesn't account for

This model assumes a constant annual return every year, which real markets never deliver. It also ignores inflation, taxes, Social Security, pensions, and any changes to your contribution rate over time. Treat the nest egg and income numbers as a planning estimate that shows the shape of compounding, not a forecast of what your account will actually hold on the day you retire.