The 4% Rule
The 4% rule says you can safely withdraw 4% of your portfolio in the first year of retirement, then adjust for inflation each year. Based on historical data, this approach has a ~95% success rate over 30-year periods. To find your target, multiply your desired annual income by 25.
Savings Benchmarks by Age
| Age | Target | Example ($60K income) |
|---|---|---|
| 30 | 1x salary | $60,000 |
| 40 | 3x salary | $180,000 |
| 50 | 6x salary | $360,000 |
| 60 | 8x salary | $480,000 |
| 67 | 10x salary | $600,000 |
Tax-Advantaged Accounts
- 401(k)/403(b): $23,500 limit (2025). Many employers match 3-6%.
- Traditional IRA: $7,000 limit. Tax-deductible contributions.
- Roth IRA: $7,000 limit. Tax-free growth and withdrawals.
- HSA: $4,300 single / $8,550 family. Triple tax advantage.
Key Strategies
- Always capture the full employer 401(k) match — it's free money.
- Increase savings rate by 1% each year or with every raise.
- Keep investment fees under 0.20% (index funds).
- Don't time the market — consistent investing beats timing.
When to Use This Calculator
- Annual review: Check once a year if your projected savings still hit your retirement income target.
- After a raise: See how increasing monthly contributions by $100-200 moves your retirement date.
- Planning a career change: Model how a salary decrease affects your long-term trajectory.
Real-World Examples
Example 1 — On track: Age 35, $80,000 saved, $600/month contribution at 7% return, retire at 65. Projected: $1.47M. Needed for $60K/year income: $1.5M. Gap: $30K — increase monthly savings by $28/month to close.
Example 2 — Late start: Age 45, $50,000 saved, $1,200/month at 7%, retire at 67. Projected: $836K. Needed for $70K/year: $1.75M. Monthly needed to close gap: $2,450/month total. Consider working 2 extra years or reducing income target.
Limitations & Assumptions
- Uses nominal return — does not subtract inflation separately (use real return ~4-5% for inflation-adjusted results).
- Assumes constant monthly contributions throughout. Gaps in employment are not modeled.
- The 4% rule is based on 30-year retirements; adjust upward if retiring early (e.g., use 3.5% rule for 40+ year retirements).
- Does not include Social Security income — add your projected benefit as a separate offset to the income target.
Data Sources
Savings benchmarks from Fidelity Investments retirement savings guidelines. 4% rule from Bengen (1994) and the Trinity Study. Account contribution limits per IRS Publication 590-A (2025). Return estimates reflect historical S&P 500 returns (Vanguard, 1926-present).
Related Guides
- Financial Planning Basics — the fundamentals of retirement planning, emergency funds, and investing
- Understanding Compound Interest — why starting early matters more than investing more
Related Data
Compare pension fund data and retirement readiness by state at SSA retirement planner. Explore cost of living data to plan where to retire at BEA Regional Price Parities.
Disclaimer: This calculator provides estimates for educational purposes only. Consult a financial advisor for personalized retirement planning advice.
Retirement Savings Reality Check
The Federal Reserve's 2022 Survey of Consumer Finances put the median retirement-account balance at $86,900 for households with any retirement savings, but 54% of working-age families had zero retirement savings at all. Among families that did save, the 65-74 age band had a median balance of just $200,000 — far below the $1.46 million Northwestern Mutual's 2024 study found Americans believe they need to retire comfortably.
Vanguard's How America Saves 2024 analyzed 4.9 million 401(k) participants: the average account balance was $134,128, the median was $35,286, and participants contributed an average 7.3% of pay plus 4.6% from employer match. Participants under automatic escalation features contributed 1.8 percentage points more on average than those who had to opt in manually — a structural lever that compounds into six figures over a career.
Social Security replaces an average 40% of pre-retirement income and the 2024 average retired-worker benefit was $1,907/month ($22,884/year). With the median retiree household spending $50,000-$60,000/year per BLS Consumer Expenditure data, retirees need roughly $27,000-$37,000 annually from savings — which at a 4% safe-withdrawal rate requires $675,000-$925,000 in assets at retirement age.
Sources: Federal Reserve SCF 2022, Vanguard How America Saves 2024, SSA, BLS CES
Methodology & Assumptions
This calculator implements standard formulas drawn from primary-source authorities. Values are point-in-time estimates; consult a licensed professional for high-stakes decisions. See the per-input definitions and source citations below.
How this works
Computations are deterministic and run client-side — no inputs leave your
browser. Formulas are derived from
standard published formulas for the calculator's domain (mortgage,
taxes, energy, conversions, etc.). When the underlying agency publishes
updated rates or thresholds we refresh defaults and update the page's
lastmod timestamp.
| Input | Default | Source / authority |
|---|---|---|
| All inputs | Domain-typical defaults | Editorial methodology, CalcMesh 2026 |