How to Use This Retirement Savings Calculator
Enter your current age, your planned retirement age, and your starting savings balance. Then add your monthly contribution, your annual salary, and any employer match details. Adjust the expected annual return and inflation rate using the sliders or input fields. Click "Calculate" to see your projected balance at retirement.
The results show your total balance, contributions you make, employer match contributions, and the investment growth — both in today's dollars and inflation-adjusted.
Why This Matters
Most people dramatically underestimate what they need for retirement. A 30-year-old earning $60,000 who saves just $500/month at a 7% return could have over $1.3 million by age 65 — but waiting until 40 cuts that to roughly $610,000. That's nearly a $700,000 difference from a single decade of delay.
Understanding your trajectory now lets you make real decisions: increase contributions by $100/month, take advantage of your employer match (it's free money — a 50% match on 6% of salary is an immediate 3% return), or retire a few years later. Someone contributing $1,000/month instead of $500 doesn't just double their savings — compound interest amplifies the difference so they end up with significantly more than double.
The inflation-adjusted figure is equally important. $1 million in 35 years buys roughly the same as $415,000 today at 2.5% inflation. Knowing both numbers helps you set realistic spending expectations and decide if you need to save more aggressively.
How It's Calculated
This calculator uses the compound interest formula with periodic contributions:
FV = P × (1 + r/n)^(n×t) + PMT × [((1 + r/n)^(n×t) − 1) / (r/n)]
Where P = current savings, r = annual interest rate, n = compounding periods per year, t = years until retirement, and PMT = contribution per period (your contribution + employer match per period). The inflation-adjusted value divides the final balance by (1 + inflation_rate)^years.
Tips & Common Mistakes
- Always capture the full employer match. If your employer matches 50% up to 6% of salary, contribute at least 6% — anything less is leaving free money on the table.
- 7% is a reasonable long-run real return for a diversified equity portfolio, but use 5–6% for a more conservative projection if you're nearing retirement or holding bonds.
- Don't forget inflation. Focus on the inflation-adjusted figure when planning your actual spending needs in retirement.
- Small increases matter enormously. Adding just $50/month at 30 compounding to 65 at 7% adds over $95,000 to your balance.
- Start now, not "when I earn more." Time in the market beats amount in the market at virtually every realistic savings rate.
Frequently Asked Questions
What's a realistic rate of return to use?
Historically, a diversified U.S. stock market index has returned roughly 10% nominally before inflation. After inflation, the real return is closer to 7%. For a balanced portfolio with bonds, 5–6% is a common conservative assumption. Use 7% for a moderate projection and 5% for a cautious one.
How does the employer match calculation work?
The employer match is calculated as: (Match %) × min(Your Annual Contribution, Match Cap % × Annual Salary). For example, a 50% match capped at 6% of a $60,000 salary means your employer contributes up to $1,800/year (50% × $3,600 cap). This amount is added monthly to your contribution.
What does "inflation-adjusted" mean in the results?
Inflation-adjusted (or "real") value shows what your projected balance is worth in today's purchasing power. If you'll have $1.2 million in 30 years but inflation runs at 2.5%, that $1.2 million buys about the same as $571,000 today. This is critical for realistic retirement planning.
Should I include Social Security in this calculator?
This calculator focuses on personal savings and employer contributions only. Social Security can provide a meaningful supplement — the average benefit in 2024 is around $1,900/month — but it should be considered a bonus, not your primary plan. Use the SSA's estimator at ssa.gov for personalized projections.