Wealth Calculator – Calculate Your Wealth Growth & Future Value

See what your savings and investments could be worth years from now — in just a few seconds, free.

Here’s the thing about wealth — it’s not about what you have today. It’s about what you keep building, year after year. This Wealth Calculator shows you that future number. Type in what you have saved, what you add each month, the return you’re expecting, and how long you plan to stay invested. You’ll instantly see your projected wealth, what it’s worth after inflation, how much came from your own pocket versus how much the market added on top, and the multiple your money grew by. It’s the difference between guessing and actually knowing where you’re headed.

What you already have invested today. Enter 0 if you are starting from scratch.

The amount you add to your investments each month.

A commonly used planning range is 6–8% for a diversified long-term portfolio, though actual returns vary by market, time period, and asset mix.

How long you plan to stay invested. Longer horizons let compounding do the heavy lifting.

Used to show what your future wealth is worth in today’s money.

How often returns are compounded. Monthly is the common default. Non-monthly selections aggregate the monthly contribution into the equivalent per-period amount (e.g. $6,000 per year under yearly compounding).

Models rising income over time. 3% is a realistic long-term default if you use it.

Changes the display symbol only. No currency conversion is applied.

Projected Future Wealth
—
Inflation-Adjusted Value
—
Total Contributions
—
Total Growth Earned
—
Your Wealth Grows To
—
Adjust the inputs to project your wealth
Contributions vs Growth
—
—
Contributions Investment Growth
Detail Value

🔥 Popular Calculators

One thing to keep in mind: the calculator assumes the same return and inflation rate every single year. Real markets don’t work that way — you’ll have great years and terrible ones. So treat the output as a rough guide, not a promise. It also doesn’t factor in taxes, fund fees, or the order in which good and bad years happen.

💱 Everything you enter should be in the same currency. The tool doesn’t convert between currencies — it just applies the return percentage to whatever numbers you give it.

What Is a Wealth Calculator?

A Wealth Calculator is basically a what-if machine. It takes four things you know — how much you’ve saved, how much you add each month, the return you’re hoping for, and how many years you’ll leave it alone — and tells you what you’d end up with. Instead of guessing, you get an actual number on a screen.

People call this tool different things. A wealth growth calculator, a future wealth calculator, a wealth accumulation calculator — same idea, different names. Some versions skip inflation. Some let you increase your contributions as your salary grows. This one does both, because pretending inflation doesn’t exist is how people end up disappointed.

Wealth Calculator vs Net Worth Calculator

Here’s a mistake a lot of people make: mixing these two up. A net wealth calculator tells you where you stand right now — everything you own minus everything you owe. That’s your scoreboard today.

A wealth calculator does something completely different. It takes that scoreboard and asks, “Okay, if nothing changes, where does this end up in 20 or 30 years?” One is a photo. The other is a movie.

You actually need both. Without the net worth number, your projections are built on guesses. Without the projection, your net worth is just a number sitting there with no direction. Run them together and you get a clearer picture of your money.

How to Use This Wealth Calculator

Step 1 — Current Savings / Initial Investment

Open your accounts and add them up. Brokerage, retirement, that high-yield savings you set aside years ago — it all counts. Leave out your house unless you genuinely plan to sell and invest the proceeds someday.

Step 2 — Monthly Contribution

Be honest here. If you can realistically save $400 a month, put $400. Don’t put the $800 you managed for three months and then quit. Consistent beats ambitious every single time when it comes to long-term investing.

Step 3 — Expected Annual Return

Higher return assumptions can produce dramatically larger projections, but they also introduce more uncertainty. A long-term projection should be tested across several assumptions rather than relying on one optimistic rate. For planning purposes, some investors use a range of assumed annual returns rather than a single fixed rate — the appropriate number depends on the assets held, the market, the time horizon, fees, taxes, and risk level. A portfolio with a larger allocation to lower-risk assets may warrant a different return assumption than a stock-heavy portfolio.

Step 4 — Investment Duration

Try it three times — 10 years, 20 years, 30 years. Watch what happens to the numbers. That single test will teach you more about compounding than any book ever will.

Step 5 — Inflation, Compounding, and Step-Up

The inflation field tells you what your future pile is actually worth in today’s money — which is usually a humbling reality check. Compounding frequency changes how often returns get applied. And the step-up field lets you model what happens when you start earning more and contributing more along with it. 3% can be used as an illustrative starting assumption when modelling rising contributions.

The Mathematics of Wealth Growth

For a lump sum with constant periodic contributions, a common future-value formula is:

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

Where P is what you started with, PMT is what you add each period, r is the rate per period, and n is how many periods there are.

This formula assumes the contribution stays the same and the rate stays the same every period. If your contributions increase each year (the step-up scenario), the standard formula doesn’t apply directly — the calculation has to be done period by period, because each year’s contribution is different. That’s what the calculator above does under the hood.

The calculator also assumes contributions are added at the end of each compounding period, meaning the existing balance grows first and the new contribution is added afterward.

When you change the compounding frequency, the monthly contribution is converted into the equivalent amount for that period. So a $500 monthly contribution becomes $6,000 under yearly compounding, $1,500 under quarterly, and $500 under monthly. This keeps the maths internally consistent, but it does approximate the timing of deposits rather than model each one month by month.

The magic isn’t in the formula — it’s in the exponent. Here’s a real example. Put $10,000 into an account earning 8% and never touch it again. Ten years later you’ve got about $21,600. Twenty years: about $46,600. Thirty years: about $100,600. Look at that jump. The first decade added roughly $11,600. The third decade added roughly $54,000. Same money, same rate — five times the growth — just because it sat there longer.

This is why wealth accumulation calculators obsess over time horizon. Starting earlier can give your contributions more time to benefit from compounding. Want to see this in isolation? Run our Compound Interest Calculator — no monthly contributions, just pure compounding doing its thing.

Choosing a Realistic Rate of Return

This input has a large impact on the final result — a small change here can shift the outcome by a large margin. Get it wrong and every number downstream is off too. A common approach is to test several scenarios rather than commit to a single number:

  • 2–4%: Savings accounts, short-term bonds, ultra-safe stuff
  • 4–6%: Balanced portfolios with a real bond allocation
  • 6–8%: Diversified stock-heavy portfolios over decades
  • 8–10%: Optimistic; achievable in some periods, but not reliable as a planning base
  • 10%+: Rarely sustainable for multi-decade planning; typically reflects an optimistic or short-term assumption

Then subtract fees. If your funds charge 0.75% per year, your 8% just became 7.25%. Sounds tiny, right? Over 30 years that difference alone can knock 15% or more off your final balance. Taxes take another bite. Retirement withdrawals get taxed as income. Brokerage gains get taxed at capital gains rates. What you can actually spend is always less than what you see.

Worked Examples

These examples use the calculator’s default monthly compounding and assume contributions are added at the end of each month. Numbers are rounded.

Example 1: The Steady Saver (20 years)

Start with $10,000, add $500 a month, expect 7%, stay invested 20 years, monthly compounding.

  • Total contributions: $130,000
  • Projected future wealth: roughly $301,000
  • Total growth earned: roughly $171,000
  • Money grew by: about 2.31x on total contributions

Notice what happened? After 20 years, the growth is bigger than what you put in. That’s the crossover point — where compounding starts doing more work than you do.

Example 2: Starting Later (10 years)

Same setup, but only 10 years instead of 20.

  • Total contributions: $70,000
  • Projected future wealth: roughly $107,000
  • Total growth earned: roughly $37,000

Halve the time, and the final balance drops by roughly 65%. That’s the cost of waiting — and it’s why starting early usually matters more than optimising later.

Example 3: Aggressive Contributions (30 years)

Start with $10,000, add $1,500 a month, expect 8%, stay invested 30 years, monthly compounding.

  • Total contributions: $550,000
  • Projected future wealth: roughly $2,345,000
  • Total growth earned: roughly $1,795,000

Triple the contribution, add a full decade, bump the return slightly, and you’re looking at seven figures. The growth alone is more than three times what you put in.

Using an Investment Wealth Calculator for Big Decisions

Retirement planning

Type in your current retirement savings, what you add each month, the return you expect, and how many years are left. If the number falls short, you’ve got three options — save more, earn more, or work longer. The calculator shows you how much each one matters. Our Retirement Calculator takes this a step further into drawdown and longevity planning.

Education funding

Work backwards. If you need $120,000 in 18 years, the calculator tells you what monthly amount gets you there. If you’re in Canada, the RESP Calculator adds government grants on top of your own contributions.

Mortgage vs investing

Paying down a 6% mortgage can provide an interest-cost saving, while investing the same money has an uncertain future return and may involve taxes, fees, and market risk. Which is better isn’t always obvious — run the numbers. Use the EMI Calculator for your loan schedule and compare it against a projection from the tool above.

Early retirement (FIRE)

The question is simple: how big does the portfolio need to be before you can walk away? Some retirement-planning approaches use a starting portfolio target around 25–30 times annual expenses, but the appropriate withdrawal rate depends on factors such as time horizon, asset allocation, taxes, fees, and market conditions. Our SWP Calculator shows what happens when you start pulling money out.

Things to Keep in Mind

Fees eat returns quietly. A 1% annual expense ratio on a $500,000 portfolio costs you around $5,000 a year. Over three decades, that can add up to six figures gone.

Taxes change the picture. Tax-advantaged accounts like 401(k)s, IRAs, ISAs, or TFSAs shield some of this. The calculator shows pre-tax numbers.

Inflation is the silent tax. A million dollars in 30 years doesn’t buy what a million buys today. That’s why the inflation field exists — use it.

Bad years hurt more than good years help. The order of returns matters, especially when you’re withdrawing. Two portfolios with identical averages can end up in very different places depending on which years were bad.

Past performance means nothing about the future. Every projection here is an estimate based on assumptions — useful, but still an estimate.

If this wealth calculator helped, here are some others worth bookmarking.

If you want to read up on how compounding actually works and what risks to watch out for, the SEC’s Investor.gov compound interest resources are genuinely useful and completely free. For real inflation numbers you can check yourself, the U.S. Bureau of Labor Statistics inflation calculator is the source many others cite.

Frequently Asked Questions

A Wealth Calculator is a tool that takes your current savings, monthly contributions, expected return, and time horizon — then shows you what your money could grow into. It’s a way to see how compound growth works with your specific numbers instead of someone else’s.
As accurate as the assumptions you feed it. The math is exact, but real markets don’t return 7% smoothly every year. You’ll get 22% one year and lose 18% the next. So use the calculator for planning — not forecasting. Run it conservatively, moderately, and optimistically. If your plan only works in the optimistic scenario, it’s not a plan.
A net wealth calculator tells you what you’re worth right now — assets minus liabilities. A wealth calculator projects forward and shows what your current trajectory leads to. You need the first to know where you’re starting. You need the second to know where you’re going.
Look at both. The nominal figure is what the balance says in the future. The inflation-adjusted figure is what that balance would actually buy in today’s money. For long-term planning, the second one is what matters. At a steady 2.5% inflation rate, purchasing power would roughly halve over about 29 years.
Higher long-term return assumptions can materially increase the projected result, but they also increase uncertainty. Rather than relying on one rate, consider testing several scenarios and reviewing whether the assumption fits the assets being modelled. A portfolio with more lower-risk assets may warrant a different assumption than a stock-heavy portfolio, and fees and taxes should be subtracted from whatever rate you choose.
Yes. That’s what FIRE planning is — figuring out when your portfolio hits a number that lets you stop working. Some retirement-planning approaches use approximately 25–30 times annual expenses as a starting point, but the appropriate target depends on your withdrawal period, portfolio, taxes, fees, and other circumstances. The calculator shows you how close you are and how fast you’ll get there if you save more.
No — it shows pre-tax, pre-fee numbers. To get realistic results, subtract your fund’s expense ratio from the return you enter, and account for the fact that you’ll owe tax on withdrawals and capital gains. If you want precise after-tax numbers, you’d need a more detailed model.
No. Nothing can. What it does is assume smooth returns, which is exactly what markets don’t deliver. If you want a more realistic picture of risk, look for tools that run Monte Carlo simulations — those show you a range of possible outcomes instead of one straight line.

⚠️ Disclaimer: This Wealth Calculator is a planning tool, not financial advice. Every number it produces is based on the assumptions you entered, and real markets will behave differently. Investment returns aren’t guaranteed and you can lose money. Past performance tells you nothing about what comes next. Before making any big financial decision, talk to a qualified advisor who knows your situation.