How does this simulator work?

This calculator uses established mathematical models to project long-term outcomes from your current inputs. Enter your values, and the simulator shows realistic projections over time based on compound growth, behavioral consistency, and average historical returns where relevant.

Is this calculator accurate?

The projections are based on mathematical models and reasonable assumptions. Real-world results will vary depending on factors outside this tool's scope, such as market conditions, life changes, and personal circumstances. Use the results as directional guidance, not exact predictions.

Can I use it for financial planning?

Yes — this is an excellent starting point for financial planning. It helps you understand the long-term impact of saving, investing, and spending decisions. For personalized financial advice, consult a qualified financial advisor.

Yes, completely free with no sign-up required. All ZAQORI simulators run entirely in your browser — your data stays on your device and is never sent to our servers.

🌴 Retirement Projection Simulator

Will your savings last through retirement? See your projected nest egg, monthly income, and whether you're on track for the retirement you envision.

Retirement Projection

Nest Egg at Retirement

Monthly Income (4% rule)

In Today's Dollars

Years to Retirement

📅 Life Milestones

What is the Retirement Projection Simulator?

The Retirement Projection Simulator models your financial future from now until well into retirement. It answers the most important personal finance question most people have: "Am I on track?" The answer comes with a concrete number, a chart of your projected balance, and a breakdown of what your monthly income will look like.

Unlike a simple nest-egg calculator, this tool models both the accumulation phase and the decumulation phase. It factors in employer matches, inflation, a safe withdrawal rate, and how long your money needs to last. The output is a complete picture of your retirement journey.

The 4% Rule and Why It Matters

The 4% rule, based on the Trinity Study, says you can withdraw 4% of your starting balance in year one of retirement, then adjust that dollar amount for inflation each year, with a high probability of not running out of money over a 30-year retirement. It's the basis for our default safe withdrawal rate, and gives you a realistic monthly income estimate.

Annual Income = Nest Egg × Safe Withdrawal Rate

How to Use This Simulator

Enter your current age and the age you plan to retire.
Add your current retirement savings and monthly contribution.
Include any employer match and your expected annual return on investments.
Set inflation and safe withdrawal rate assumptions (defaults are reasonable).
Click "Project My Retirement" to see your nest egg, monthly income, and timeline.

Benefits of Visualizing Your Retirement

Retirement is a long-term goal that can feel abstract. Seeing $1.4M projected at age 65 changes the conversation from "I should probably save more" to "I need $400 more per month to hit my target." The simulator makes the math real and gives you specific levers to pull.

Run multiple scenarios: What if I work 2 more years? What if I increase my 401(k) by 2%? What if I retire at 60 instead of 65? The differences are concrete, not vague.

⚠️ Educational Estimate Only

This tool provides educational estimates only. It is not financial, investment, tax, or legal advice. Real outcomes depend on market conditions, fees, inflation, taxes, personal behavior, and life circumstances.

Results are based on simplified compound growth assumptions. Actual investment returns are not guaranteed and may be higher or lower. See our Methodology and Disclaimer for full details.

How this is calculated

Inputs used

You provide the starting amount, monthly contribution, expected return rate, and time period. Each input affects the result directly — try changing one to see how the projection moves.

Formula (simplified)

Future value is estimated using the standard compound growth formula with a recurring monthly contribution:

FV = P × (1 + r)^n + PMT × [((1 + r)^n − 1) / r]

Where P = starting amount, PMT = monthly contribution, r = monthly return rate, n = number of months.

Assumptions

Contributions are made every month and grow at the same rate.
Returns are constant — real markets go up and down.
No fees, taxes, or inflation are deducted by default.
Compounding is monthly, not daily.

Limitations

Real portfolios face sequence-of-returns risk, fees, taxes, and behavioral changes (pausing contributions, withdrawing, etc.). Treat the result as a directional baseline, not a forecast.

Frequently Asked Questions

How much do I need to retire?

A common rule is 25× your annual expenses (the inverse of the 4% rule). If you spend $50,000 a year, you need about $1.25M. The simulator gives you a precise number based on your inputs.

What return should I assume?

For a diversified stock portfolio, 7% nominal (5% real) is a reasonable long-term assumption. Be conservative — under-promising beats over-promising. Adjust based on your asset mix.

Does this include Social Security?

Not directly. Add the expected monthly benefit to your projected retirement income to see the total. Estimate yours at ssa.gov.

What if I retire early?

Early retirement means fewer contribution years and more withdrawal years. The simulator handles this — extend the "years in retirement" field and consider a 3% withdrawal rate (more conservative).

Are taxes included?

This is pre-tax. Roth accounts are tax-free in retirement. Traditional 401(k)/IRA withdrawals are taxed as ordinary income. Effective tax rate of 15–22% in retirement is a reasonable assumption.

Related Simulators

Future Wealth Simulator — total net worth picture.
Investment Growth Simulator — model individual investments.
Savings Growth Simulator — for guaranteed-rate savings.
Life Progress Timeline — see your whole life arc.