RETIREMENT SAVINGS CALCULATOR

Planning for retirement requires answering three key questions: How much do I need? How much should I save each month? How long will my money last? This calculator answers all three. The widely-used 4% rule suggests your retirement nest egg should equal 25× your annual expenses — because a 4% annual...

RETIREMENT PLANNER

Total saved across all accounts

How much you save each month

7% is common for diversified portfolio

What you plan to spend per year

POST-RETIREMENT RETURN

Used to calculate how long your money lasts. 4–5% is typical for a conservative retirement portfolio.

PROJECTED BALANCE ✓ ON TRACK

$1,625,796

Target: $1,500,000 · Surplus $125,796

LIVE DIAGRAM

✓ On track — projected surplus $125,796

PROJECTED

$1,625,796

TARGET (4% RULE)

$1,500,000

MONTHLY NEEDED

$896.89

MONEY LASTS

∞ years

PROGRESS TO GOAL100.0%
$1,625,796Goal: $1,500,000

SAVINGS GROWTH (vs target)

yr1
yr16
yr30
Savings
Target

DRAWDOWN

$60,000/yr withdrawals from $1,625,796

✓ Money lasts indefinitely at this rate

Live diagram · updates as you type

Created with❤️byeaglecalculator.com

YEAR-BY-YEAR PROJECTION

HOW TO USE

  1. 1

    Enter your current age and target retirement age, your current retirement savings balance, and your expected annual investment return (7% is a common long-term estimate for a diversified portfolio).

  2. 2

    Enter your expected annual retirement expenses — what you plan to spend each year in retirement. The calculator uses the 4% rule to show your nest egg target (expenses × 25).

  3. 3

    Enter how much you are currently saving per month. The calculator compares your projected balance against your nest egg target and tells you if you are on track or how much more you need to save.

  4. 4

    The drawdown section shows how long your savings will last given your withdrawal rate and portfolio return in retirement. Enter a post-retirement return (often lower, 4–5%, reflecting a more conservative portfolio).

WORKED EXAMPLE

James is 35, has $50,000 saved, and plans to retire at 65. He expects $60,000/year in retirement expenses. Nest egg target (4% rule): $60,000 × 25 = $1,500,000. He is currently saving $1,000/month at 7% annual return. Projected balance at 65: $1,096,343 — he is $403,657 short of his target. To reach $1,500,000 in 30 years at 7%, he needs to save $1,479/month total. He currently saves $1,000, so he needs an additional $479/month. At 5% post-retirement return, $1,500,000 with $60,000/year withdrawals would last approximately 52 years.

REFERENCE FORMULAS

RETIREMENT PLANNING FORMULAS
METRICFORMULANOTES
Nest Egg TargetAnnual Expenses × 254% rule — 30+ year retirement
Projected BalancePV×(1+r)^n + PMT×[((1+r)^n−1)/r]Compound growth + contributions
Monthly NeededPMT = FV × r / ((1+r)^n − 1)Reverse future value annuity
Withdrawal RateAnnual Withdrawal / Nest Egg × 1004% is standard safe withdrawal
Money DurationMonth-by-month: B = B×(1+r) − withdrawalUntil balance reaches zero

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4% rule: nest egg = annual expenses × 25 · Monthly needed = FV × r / ((1+r)^n − 1) · Last updated: April 25, 2026 · Formula verified by EagleCalculator team · For informational purposes only — consult a financial advisor · Eagle-eyed accuracy for every calculation.