Finance calculator
Retirement Savings Calculator, Growth & 4% Target
Project retirement savings from your age, contributions, and return assumption. Compare the result with a 25x annual-income planning target.
How CalcMesh projects retirement savings
According to the IRS, retirement account contribution limits are updated annually via cost-of-living adjustments. This calculator's account-limit context reflects the 2026 vintage cited in our data sources below; full assumptions are documented in our methodology.
We project savings growth to retirement, then compare it with a 25× annual-income planning target. The widely cited 4% rule is a planning heuristic, not a personalized withdrawal recommendation or a guarantee.
We model the contributions and nominal return you enter through your target age. The calculation does not apply a separate inflation adjustment.
The 4% Rule
The 4% rule is commonly used as a starting heuristic: a 4% first-year withdrawal implies a portfolio target of 25 times annual spending. Outcomes depend on the time horizon, spending pattern, taxes, fees, portfolio, and market returns, so use it to compare scenarios rather than as a promise of a safe withdrawal.
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): $24,500 limit (2026). Many employers match 3-6%.
- Traditional IRA: $7,500 limit in 2026; the $1,100 catch-up makes the age-50+ limit $8,600. Deductibility depends on income and plan coverage.
- Roth IRA: $7,500 limit in 2026; the $1,100 catch-up makes the age-50+ limit $8,600. Eligibility depends on income.
- HSA: $4,400 self-only / $8,750 family for 2026. Triple tax advantage.
Key Strategies
- Use the calculator to compare a higher contribution, a later retirement age, or a lower return assumption.
- Check plan rules, fees, and any employer contribution with your plan documents.
- Keep a record of the return, income, and time-horizon assumptions behind a decision.
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: Age 35, $80,000 saved, $600/month contribution at 7% nominal return, retire at 65. Projected savings are about $1.38M. A 25× target for $60,000 annual income is $1.5M, leaving a shortfall of about $119,000; the required monthly contribution for that target is about $697 under the same assumptions.
Example 2: Age 45, $50,000 saved, $1,200/month at 7% nominal return, retire at 67. Projected savings are about $982,000. A 25× target for $70,000 annual income is $1.75M; the required monthly contribution for that target is about $2,430 under the same assumptions.
Limitations & Assumptions
- Uses nominal dollars and does not apply a separate inflation adjustment.
- Assumes constant monthly contributions throughout. Gaps in employment are not modeled.
- The 25× target is a planning heuristic, not a personalized withdrawal recommendation. Different horizons and spending needs can produce different results.
- 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. The 4% rule comes from Bengen (1994) and the Trinity Study. 2026 account contribution limits follow IRS cost-of-living adjustments. 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.
After you project the balance
What to do with the numbers
- If your projection falls short of the 25x-income target, use the "required monthly contribution" framing from the examples above to see the exact dollar increase that closes the gap.
- Check your current savings against the age-benchmark table (1x salary at 30, 3x at 40...) as a quick sanity check, not a hard rule - your own target depends on your actual spending plan.
- Remember this projection uses nominal dollars with no separate inflation adjustment - a $1.5M target today buys less in 20-30 years, so treat the number as a floor, not a comfortable cushion.
- Add your projected Social Security benefit as a separate offset before judging whether you are on track - this calculator does not include it in the target.
Methodology & Assumptions
This compounding tool projects balances on the schedule and return assumption you enter. Contribution timing dominates the path; fees and tax treatment are not invented—see defaults in the table.
How this growth node runs
Balances compound on the stated schedule (usually monthly). Contribution timing and the return assumption dominate the path - fees and taxes are not invented. Published domain formulas
govern the identities; when an agency updates rates or thresholds we refresh defaults
and the page lastmod.
| Input | Default | Source / authority |
|---|---|---|
| Balance, contribution, return | Stated compounding frequency | Compound-interest identity |