KalkWise
RetirementPopular

Retirement Calculator

Project your retirement savings and estimate your future monthly income.

Updated June 2026 · Editorial standards

Your details

$
$
%
%
At retirement
$2,376,362
Monthly income· 4% withdrawal
$7,921
You contribute
$470,000
Investment returns
$1,906,362

Contributing $1,000/month for 35 years grows to $2,376,362 by age 65 — your investments generate $1,906,362, or 80% of the final balance.At a 4% withdrawal rate that provides $7,921/month in retirement income.

Portfolio growth to retirement

Contributions vs returns

Growth performance

BehindAhead
Ahead5.1× your contributions

How much of your final balance comes from investment returns vs. your own deposits. Higher is better.

Year-by-year projection

AgeContributionsReturnsBalance
Age 31$12,000$4,007$66,007
Age 32$12,000$5,164$83,171
Age 33$12,000$6,405$101,576
Age 34$12,000$7,736$121,312
Age 35$12,000$9,162$142,474
Age 36$12,000$10,692$165,166
Age 37$12,000$12,332$189,499
Age 38$12,000$14,091$215,590
Age 39$12,000$15,978$243,568
Age 40$12,000$18,000$273,568
By the KalkWise Editorial Team Reviewed for accuracy Updated June 2026

What is the retirement calculator?

In short

A retirement calculator projects your nest egg by compounding your current savings plus contributions until retirement, then estimates sustainable income using a withdrawal rate. The 4% rule suggests you can withdraw 4% of your balance in the first year, so you need roughly 25× your annual expenses saved.

This retirement calculator projects how much you'll have saved by retirement and estimates the monthly income it can provide, based on your contributions, expected return, and a chosen withdrawal rate.

How to use this calculator

  1. 1Enter your current age and target retirement age.
  2. 2Add your current savings and monthly contribution.
  3. 3Set your expected annual return.
  4. 4Choose a withdrawal rate (4% is a common default).
  5. 5Review your projected balance and monthly retirement income.

The formula

FV=P(1+rn)nt+PMT×[(1+rn)nt−1rn]
First we compound your savings and contributions up to retirement to get the balance (FV). Your first-year income is then simply that balance multiplied by your withdrawal rate.
FV
— Projected balance at retirement
P
— Current savings
PMT
— Monthly contribution
r
— Expected annual return (decimal)
n
— Compounds per year
t
— Years until retirement

Annual income = FV × withdrawal rate. The 4% rule is a guideline based on historical US market data, not a guarantee.

Worked example

The scenario

Age 30, retire at 65, $50,000 saved, $1,000/month, 7% return, 4% withdrawal.

gives

The result

You retire with about $1.94M, providing roughly $6,460/month in first-year retirement income.

Common use cases

  • Checking if you're on track to retire
  • Testing how contribution changes affect your future
  • Estimating retirement income from a target nest egg
  • Planning early retirement (FIRE)

Limitations & assumptions

  • Does not include Social Security, pensions, or other income.
  • Assumes a constant return; sequence-of-returns risk is not modeled.
  • Ignores taxes and is not adjusted for inflation.

Frequently asked questions

The 25× rule: save 25 times your annual expenses. If you spend $50,000/year, your target is $1.25M — which at 4% withdrawal generates $50,000/year. Saving 15% of income throughout your career gets most people to this target by their mid-60s.

Disclaimer: KalkWise calculators are provided for general informational and educational purposes only and do not constitute financial, investment, tax, or legal advice. Results are estimates based on the figures you enter and the assumptions described above. Actual outcomes will vary. Consult a qualified professional before making financial decisions.