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See how your money can grow over time when you keep saving and give it time to compound.
Last reviewed by FinSync LLC
Who this is for
People who want to see how money can grow over time if they leave it invested or keep adding to it.
What to type in
Your starting amount, monthly contribution, expected return, and time horizon.
Start with the assumptions, then use the interpretation below to compare tradeoffs without bouncing between sections.
Nominal, before inflation.
Long-term growth
You personally put in $130,000.00, and compounding adds another $170,850.72 on top.
Total contributions
$130K
Growth earned
$170.9K
The gap between contributions and final balance is the compounding effect doing the work.
A monthly contribution of $500.00 matters just as much as the rate over long periods.
This is a projection, not a promise. Real returns will move around from year to year.
If the end number is lower than you need, the biggest levers are time, monthly contribution, and return assumptions.
Use the yearly breakdown to see when growth starts to matter more than your own deposits.
Yearly breakdown
| Year | Balance | Contributions | Interest |
|---|---|---|---|
| 1 | $16.9K | $16K | $919.19 |
| 2 | $24.3K | $22K | $2,338.58 |
| 3 | $32.3K | $28K | $4,294.31 |
| 4 | $40.8K | $34K | $6,825.16 |
| 5 | $50.0K | $40K | $9,972.70 |
| 6 | $59.8K | $46K | $13.8K |
| 7 | $70.3K | $52K | $18.3K |
| 8 | $81.6K | $58K | $23.6K |
| 9 | $93.7K | $64K | $29.7K |
| 10 | $106.6K | $70K | $36.6K |
| 11 | $120.5K | $76K | $44.5K |
| 12 | $135.5K | $82K | $53.5K |
Showing first 12 of 20 rows
Calculators are useful for scenarios. BetterOff connects supported accounts so you can compare those assumptions with synced balances and transactions.
Connect a supported bank, brokerage, or exchange. Connections are read-only, encrypted, and cannot move money.
Use this if you want to understand how the calculator works, not just plug in numbers.
Step 1
Enter your starting principal and monthly contribution.
Step 2
Set annual return, horizon, and compounding frequency.
Step 3
Review future value plus contribution and growth decomposition.
These cover the assumptions, tradeoffs, and edge cases behind the calculator.
Use the calculator for the math, then use these guides to make the decision with more confidence.
DCA
Compare dollar-cost averaging and lump-sum investing with preset bull/bear/sideways/volatile paths or your own historical monthly prices.
Investment Return
Calculate total return, CAGR, and dollar gain from initial investment, final value, holding period, and dividends received.
Retirement
Project retirement savings, estimate sustainable monthly income at a 4% withdrawal rule, and quantify any gap to your target.
Portfolio Allocation
Get a recommended split across US stocks, international stocks, bonds, and cash based on your time horizon and risk tolerance.
Reviewed by FinSync LLC
Last 10 years of projected balance