Savings Goal Calculator
Two questions, one tool: how long until you reach your goal at a given monthly contribution, or how much per month you need to hit it by a date — both with compound growth. Instant, no sign-up, formula shown.
Quick answer
Saving $500 a month toward a $50,000 goal, starting from $5,000 at a 6% return, gets you there in 6 years exactly. Raise it to $600 a month and it becomes 5 years 2 months; drop to $300 and it stretches to 8 years 10 months. Change the inputs above and this answer updates with your own numbers.
Your balance growing to the goal
Contributions build the base; compounding curves it upward over time.
What a different monthly amount does to the timeline
Paying more each month reaches the goal faster — see the exact difference.
| Monthly contribution | Time to goal | Months |
|---|
Two questions, one calculator
Savings goals come in two shapes, and this tool answers both:
- "I can save this much — when will I get there?" You know the monthly amount and want the date.
- "I need it by then — how much must I save?" You know the deadline and want the monthly figure.
The second is the more useful one for a fixed deadline like a house deposit or a wedding, because it converts a vague intention into a single number you can either afford or cannot.
The monthly amount is the lever
Same $50,000 goal, same $5,000 starting balance, same 6% return:
| Monthly saving | Time to reach $50,000 |
|---|---|
| $300 | 8 years 10 months |
| $400 | 7 years 2 months |
| $500 | 6 years 0 months |
| $600 | 5 years 2 months |
| $800 | 4 years 1 month |
| $1,000 | 3 years 4 months |
Between $300 and $1,000 a month the wait falls from nearly nine years to a little over three. Nothing else on this page moves the answer that far.
For a short goal, the return barely matters
This is the section most savings calculators leave out, and it is the one that should change what you do. Same $50,000 goal, same $500 a month, varying only the rate of return:
| Annual return | Time to reach $50,000 |
|---|---|
| 0% — cash under the mattress | 7 years 6 months |
| 3% | 6 years 8 months |
| 6% | 6 years 0 months |
| 9% | 5 years 6 months |
Earning nothing at all costs you two years against earning 9%. Meanwhile, going from $500 to $1,000 a month saves you nearly three. Over a horizon this short, how much you put in matters more than what it earns, because compounding has not had time to take over.
That has a practical consequence worth stating plainly: taking investment risk with money you need in three to five years buys you very little upside, while exposing you to the chance of arriving with less than you started. The shorter the goal, the stronger the case for keeping the money somewhere boring.
Working backwards from a deadline
If the date is fixed, the question inverts. Reaching $50,000 from $5,000 at 6%:
| Deadline | Required monthly saving | Of the $45,000 gap, you contribute |
|---|---|---|
| 2 years | $1,744 | $41,866 |
| 3 years | $1,119 | $40,284 |
| 5 years | $620 | $37,199 |
| 7 years | $407 | $34,220 |
| 10 years | $250 | $29,951 |
The last column is the same point from a different angle. On a two-year deadline you personally provide $41,866 of the $45,000 gap and growth provides barely $3,000. On a ten-year deadline you provide $29,951 and growth provides $15,000 — a third of the work.
How the answer is calculated
- FV — your goal
- PV — what you have already saved
- PMT — the monthly contribution
- r — the monthly return, the annual rate divided by 12
- n — the number of months
To find the time, the equation is rearranged and solved for n using logarithms. To find the required monthly amount, it is solved for PMT instead. The calculator does whichever one you ask for, and rounds the time up to a whole month — you cannot reach a goal in a fraction of a payment.
See the method with your own numbers
These update live from the calculator inputs above.
Example: $50,000 from a $5,000 start
- Saving $500 a month at 6% reaches $50,000 in 6 years exactly.
- Needing it in 5 years instead requires $620 a month.
- Needing it in 2 years requires $1,744 a month — nearly three and a half times as much, for a deadline three years earlier.
That non-linearity is worth noticing before committing to a date. Halving the timeline much more than doubles the monthly requirement, because there is far less time for growth to contribute and the entire gap has to come out of your income instead.
Frequently asked questions
How long will it take to save $50,000?
From a $5,000 start at 6%, saving $500 a month takes 6 years exactly. At $300 a month it takes 8 years 10 months and at $1,000 a month 3 years 4 months. Enter your own goal, starting balance and monthly amount above for a precise answer.
How much do I need to save each month to reach my goal?
Switch the calculator to solve for the monthly amount and give it your deadline. Reaching $50,000 from $5,000 at 6% needs $620 a month over five years, $1,119 over three years, or $1,744 over two. Shortening the deadline raises the requirement much faster than proportionally.
What return should I assume for a savings goal?
Match it to the horizon rather than to optimism. For a goal within a few years the return has surprisingly little effect — earning 0% instead of 9% costs about two years on the default example — so a cash or high-yield savings assumption is usually the honest one. Longer goals justify a higher assumed return because compounding has time to matter.
Should I invest money I need in three years?
The arithmetic argues against it. Over a short horizon the extra return is worth relatively little, while the possibility of a decline is very real, and a shortfall on a fixed deadline cannot be waited out. That asymmetry is the whole reason short-term goals are usually kept in cash or equivalents.
Does the calculator account for inflation?
Not automatically. If your goal is a fixed dollar amount, such as a specific deposit figure, nominal is correct. If the goal is really "enough to buy something", that something may cost more by the time you arrive, so either raise the target or enter a real return — your expected return minus inflation — to keep everything in today's money.
What if the goal turns out to be unreachable?
The calculator will tell you rather than show an impossible date. There are only four levers: save more each month, extend the deadline, lower the target, or start from a larger balance. Seeing which of the four is actually available is usually more useful than the original number.
Method & sources
- Calculation: Standard future-value-of-an-annuity formula (shown above), monthly compounding, cross-checked against a month-by-month simulation.
- Return guidance is illustrative; historical long-run equity returns are widely cited near 6–7% real. Not a forecast.
- Reviewed: · Assumptions reviewed quarterly.
Educational estimate, not financial advice. Investment returns vary and can be negative.
Run your own numbers
Set your goal, what you have saved so far and either the monthly amount or the deadline — and see the other one.
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