Retirement Calculator

Estimate what your retirement savings could grow to. Enter your age, planned retirement age, current savings and monthly contributions to see the projected total, how much you put in, and how much came from growth.

How it works: Your savings grow every month: the balance earns the annual return (spread monthly) and your monthly contribution is added. This is an illustration using a steady return — real investments go up and down, and the result is before tax and inflation.

How the Retirement Calculator Works

This calculator helps you see whether your retirement savings are on track. Starting from what you have saved today, it projects what you could have by the time you retire, adding your regular contributions and the investment returns on the growing balance. It is useful for checking whether a monthly contribution is enough, how much difference starting earlier makes, and how far a nest egg might stretch.

The calculation uses annual compounding. Each year, your starting balance is increased by the expected return, then your annual contributions are added. Repeating that across the years until retirement gives the projected fund value. It also calculates the total amount you will have contributed and the growth from investment returns, so you can see how much of the final figure is your money and how much is growth.

The estimate assumes a constant annual return and regular contributions, with no inflation adjustment, taxes, or fees. Investment returns vary in reality, so this is a planning projection rather than a guarantee — it shows what happens if the assumed return holds every year, which is useful for comparisons even though real markets fluctuate.

How to Use This Calculator

Enter the age you are now and the age you plan to retire.
Enter your current savings balance.
Enter your monthly contribution amount.
Enter the annual return you expect from your investments.
Press Calculate to see the projected fund value, total contributions, and investment growth.

Example

Start at age 30 with $20,000 saved, contribute $300 a month, and earn 6% a year. Retire at 65 and your projected fund is $565,471.55. You will have contributed $146,000 in total, so $419,471.55 of the final value is investment growth — nearly three times what you put in.

Start 10 years later, at 40, with the same contribution and return, and the fund reaches only $279,021.18. The 10-year delay costs you more than $286,000 — a powerful illustration of why starting early matters more than contributing more later.

What Affects the Result

Starting age — the earlier you start, the longer compounding works, which is the single biggest factor.
Monthly contribution — regular contributions add up; even small increases compound over decades.
Expected return — a higher return raises the final value, but also assumes more investment risk.
Current savings — money already saved has the longest time to grow.
Practical tip — if your employer matches contributions, take the full match before anything else: it is an instant 100% return on that money.

The example above shows the cost of delay, but there is another comparison worth running: increasing your contribution versus chasing a higher return. Take the same saver who starts at 30 with $20,000 and contributes $300 a month at 6%. Raising the contribution to $400 a month lifts the age-65 fund to $720,364.55 — about $155,000 more. Chasing an 8% return instead, while keeping the contribution at $300, lifts the fund to $795,405.44 — more than the contribution increase. But that 8% comes with materially higher risk and is not guaranteed, while the extra $100 a month is entirely within your control. A realistic plan leans on both: a contribution you can sustain through job changes and lean years, and a return assumption that does not require heroic market performance.

It is also worth remembering that this calculator works in nominal dollars — the numbers are not adjusted for inflation. A fund of $565,471.55 at age 65 will not buy what $565,471.55 buys today. At 2.5% inflation over 35 years, prices roughly double, so that fund has the purchasing power of about $237,000 in today’s money. That does not make the projection wrong, but it changes how you judge it: compare your projected fund against the cost of living you expect in retirement, not today’s prices. If the inflation-adjusted figure looks thin, the levers are the same ones in the list above — start earlier, contribute more, or retire later — and this calculator shows you exactly how much each one moves the outcome.

Retirement Calculator FAQs

How much do I need to retire?

It depends on your spending, other income, and how long you live after retiring. A common rule of thumb is to aim for a fund that lets you withdraw around 4% a year, but your own spending plan matters more than any rule.

What return should I assume?

It depends on how your money is invested. A diversified portfolio has historically returned around 6–7% a year on average over long periods, but past performance is not a guarantee. Being conservative with your assumption gives a safer plan.

Does this calculator include employer contributions?

Not separately. If your employer contributes, add their contribution to your monthly contribution amount to include it in the projection.

What about inflation?

The projection is in nominal terms — it does not adjust for inflation. The final figure will buy less than the same amount would today, so keep that in mind when judging whether the total is enough.

What if I retire earlier or later?

Changing the retirement age has a big effect. Retiring later gives more years of contributions and growth; retiring earlier cuts both. Try different ages to see the trade-off for your plan.