Retirement Savings Gap Calculator

Enter your details to estimate your target nest egg, projected balance at retirement, and the monthly savings needed to close any gap.

We will try to auto-detect your state if you allow location access. You can always choose manually.
Target nest egg
$0
Projected at retirement
$0
Gap (if any)
Surplus (if any)
Monthly needed to hit goal
$0
Rule‑of‑thumb needed by now
$0

Next 36 months (projection)

PeriodContributionGrowthProjected balance

Assumes contributions at end of month and constant return rate. Actual markets vary.

How to use this calculator

  1. Enter your age, target retirement age, salary, current savings, and monthly contribution.
  2. Set an annual return rate (try 5–7% for long‑term stock/bond mixes).
  3. Enter your desired retirement income and withdrawal rate (4% is a common starting point).
  4. Click Calculate to see your savings gap and the monthly amount needed to hit your goal.

Frequently asked questions

How this calculator estimates your retirement gap

Behind the scenes, the Retirement Gap Calculator is running a few simple but powerful formulas that planners use every day.

These projections are simplified and assume steady contributions and returns. Use them as a planning starting point, not as a guaranteed forecast.

What to do after you see your results

Seeing a retirement gap can feel intimidating, but small levers add up over time. Use your output as a roadmap, not a verdict.

  1. Experiment with different contribution levels to see how much flexibility you have in your budget.
  2. Test scenarios with later or earlier retirement ages to understand the trade‑offs in time versus savings.
  3. Adjust return and withdrawal assumptions to reflect conservative, moderate, and optimistic paths.
  4. Bring printed or saved results to a financial professional or trusted advisor for a second opinion.

The goal is to move from "I have no idea if I'm on track" to "I understand the main variables and what I can control."

Key milestones to revisit your retirement gap

Your gap number is not something you calculate once and forget. It's a snapshot that should be updated as life changes.

Treat these milestones as checkpoints that keep your retirement plan aligned with your real life.

Conversation prompts for partners and family

Retirement planning is easier when everyone affected by the plan understands the numbers and trade-offs.

The goal is not to agree on every detail today, but to start a shared planning language.

Habits that make closing the retirement gap more realistic

Big changes usually start with habits that feel almost too small to matter. When you link the calculator's numbers to day‑to‑day decisions, your gap becomes more manageable.

The calculator shows you the target. Habits like these are how you walk toward it without burning out.

Use the calculator for mini planning sessions

Instead of treating retirement planning as a once-a-year chore, use short, focused sessions with the calculator to make steady progress.

Breaking planning into smaller sessions makes it easier to keep your retirement path aligned with real life.

Compare multiple scenarios side by side

One of the most powerful ways to use this calculator is to compare a few snapshots of your future, not just one.

Writing these scenarios down in a simple table can turn abstract numbers into concrete, comparable choices.

Track your retirement progress over time

Once you have a first retirement gap estimate, the next step is turning it into a simple tracking system you can maintain.

Seeing a series of snapshots over time can be more motivating than staring at one big number in isolation.

Use the calculator together with a partner

Retirement is often a shared project. Running scenarios together can surface assumptions and hopes that might otherwise stay unspoken.

The goal is not a perfect prediction, but a shared understanding of what you are working toward together.

Stress-test your retirement plan with "what if" questions

Once you have a few scenarios you like, it can be helpful to see how they hold up when life bends away from the ideal.

The goal is not to predict every twist, but to feel prepared for a few different versions of the future.

Fit your retirement gap into the rest of your money goals

Retirement planning does not happen in a vacuum. Most people are juggling several priorities at the same time.

Seeing all of your goals on the same planning map can make trade-offs feel more intentional and less like guesswork.

Build a "small wins" timeline for your plan

Big retirement numbers can feel distant. A small wins timeline keeps your focus on the next few steps, not the next few decades.

When you can point to real progress in the recent past, the long-term path feels more believable.

What Is the “Retirement Gap”?

The retirement gap is the difference between what you’re likely to have at retirement and what you’re likely to need. This tool helps you estimate that gap quickly, so you can plan contributions and adjustments with fewer surprises.

What You’ll Need

  • Current age and planned retirement age
  • Current portfolio balance and annual contributions
  • Expected annual spending in retirement
  • Expected investment return and inflation assumptions

What You’ll Get

  • An estimated surplus or shortfall (“gap”)
  • Suggested contribution changes needed to close the gap
  • Scenario comparisons (conservative, baseline, optimistic)

Why It Helps

Small changes early compound over decades. A clear estimate makes decisions—like raising contributions or shifting retirement age—more concrete.

How to Use the Calculator

  1. Enter your current age and target retirement age.
  2. Add current savings and planned yearly contributions (include employer match if applicable).
  3. Choose expected annual return and inflation. If unsure, use the defaults.
  4. Set an annual spending target for retirement. Include housing, healthcare, travel, and taxes.
  5. Review the gap estimate and adjust contribution or retirement age to see the effect.

Tip: Re-run this calculation after big life changes or every 6–12 months.

Methodology (Quick)

We project your portfolio forward from today to retirement using compound growth on contributions and the current balance. At retirement, we compare the projected nest egg with a simplified spending model (annual spending target adjusted for inflation over the retirement horizon).

Assumptions

  • Constant real contribution each year until retirement
  • Average annual return applied to the portfolio
  • Inflation adjusts future spending needs
  • No taxes or fees in the baseline (use a buffer to account for them)

What It’s Not

This is a planning estimate, not investment advice. Real returns vary, and taxes, fees, and unexpected costs matter. Use scenarios to capture uncertainty.

Scenario Bands

Compare a conservative case (lower returns/higher inflation), a baseline case, and an optimistic case. The spread between them shows how sensitive your plan is.

Worked Examples

Early Career

Age 28 → 65, $15k balance, $6k/yr contributions, 6% return, 2.5% inflation, $45k spend. Result: small gap now; +$100/month contribution closes it.

Mid-Career

Age 42 → 67, $220k balance, $12k/yr contributions, 5% return, 2.3% inflation, $70k spend. Result: moderate gap; moving retirement to 68 or adding $300/month closes it.

Late Career

Age 58 → 67, $540k balance, $10k/yr contributions, 4.5% return, 2.5% inflation, $85k spend. Result: sizeable gap; partial spending reduction plus higher contributions narrows it.

Frequently Asked Questions

Do you store my inputs?

No. The calculator runs in your browser. We don’t upload your numbers.

What return and inflation should I use?

If you’re unsure, try 4–6% returns and 2–3% inflation for a baseline. Then compare a conservative and an optimistic case.

How long should I plan for retirement?

Many planners assume 25–35 years. If your family longevity is higher, extend the horizon to be safe.

Where do taxes fit?

Taxes and fees aren’t modeled in the baseline. Add a cushion to your spending target or reduce your expected return to account for them.

Glossary

Accessibility & Privacy

Last expanded October 03, 2025