Find out exactly how much to set aside each month to reach your goal on time
In plain terms: it tells you how much to set aside each month to reach a savings goal by a target date. It accounts for the money you have already saved and the interest that money and each future deposit earns along the way, then hands you a single monthly number to budget around. Everything runs in your browser — nothing you type is uploaded or stored.
Savings goal calculator tells you exactly how much to set aside each month to hit your target by a chosen date, factoring in what you have already saved and the interest you will earn. Instead of guessing whether $200 or $400 a month is enough, you enter your goal amount, your current balance, how long you have, and the rate your savings earn — and the tool returns a single, concrete monthly number you can budget around, along with your total contributions and the interest working in your favor.
Under the hood, the calculator solves a well-established finance formula, but the idea is simple. First, it takes any money you have already saved and grows it forward to your target date, because that balance keeps earning interest while you save. Whatever that grown balance does not cover is the gap you still need to fund with monthly deposits. The calculator then works out the fixed monthly amount that, deposited every month and left to earn interest, exactly fills that gap by your deadline.
The engine behind this is the future value of an ordinary annuity. When your account earns interest, the required monthly deposit is PMT = R × i / ((1 + i)n − 1), where R is the remaining amount needed after your existing savings grow, i is the monthly interest rate (the annual rate divided by 12), and n is the number of months until your goal. When you leave the interest rate at 0%, the formula collapses to plain division: you simply split the remaining amount evenly across the months, so a $12,000 gap over 24 months is $500 a month. In both cases the output is the same practical thing — the amount to move into your goal account every month.
Because each deposit you make earns interest for the rest of the timeline, an account that pays interest reaches the goal with smaller monthly contributions than a plain jar of cash. That is why the calculator asks for a rate: it lets your money do part of the work, and shows you how much of the final total comes from interest rather than out of your own pocket.
Even modest interest reduces the monthly amount you need, and the effect grows with longer timelines. The table below shows the required monthly savings for a $20,000 goal over five years (60 months) starting from zero, at three different interest rates. Notice how a higher rate lowers your out-of-pocket monthly cost because interest covers more of the goal:
| Annual Interest Rate | Required Monthly Savings | Total You Contribute | Interest Earned |
|---|---|---|---|
| 0% | $333.33 | $20,000 | $0 |
| 3% | $309.31 | $18,559 | $1,441 |
| 5% | $294.09 | $17,645 | $2,355 |
At 0% you have to supply every dollar yourself. At 5%, interest contributes more than $2,300 toward the same $20,000 goal, so your monthly deposit drops by nearly $40. Over longer horizons the gap becomes far larger: on a 20-year goal, interest can cover a large share of the total, which is why the earlier you start and the higher the rate you can safely earn, the lighter your monthly burden becomes.
The timeline you choose is the single biggest lever over your required monthly savings. Doubling your timeframe roughly halves the monthly amount, because the same goal is spread across twice as many deposits and each deposit has more time to earn interest. A $10,000 goal in one year demands about $833 a month, but the same goal in three years needs only about $278 a month. If the monthly figure the calculator returns feels out of reach, extending the deadline is usually the most powerful and painless adjustment.
That said, a realistic timeline balances ambition with your actual budget. Set the deadline too soon and the monthly amount becomes unsustainable, leading to missed deposits and frustration. Set it too far out and you may lose motivation or let the goal drift. A good approach is to run the calculator a few times with different deadlines until the monthly number lands comfortably within your budget — ideally leaving room so an unexpected expense does not derail the plan.
Where you park your goal savings affects both the interest you earn and how easily you can stick to the plan. The right home depends mainly on your timeline and how soon you might need the money:
These are general descriptions of common account types rather than recommendations of any specific product. Rates change frequently, so compare current offers and check the terms — including any minimum balance, fees, or withdrawal restrictions — before opening an account.
People use a savings goal plan for all kinds of targets, and the same math applies to each. A few of the most common:
Whatever the goal, the process is the same: name a specific dollar amount, pick a realistic date, enter any money you have already put aside, and let the calculator translate it into a monthly habit. Breaking a large, intimidating number into a steady monthly deposit is what makes big goals feel achievable.
Enter your savings goal amount, the amount you have already saved (leave it at zero if you are starting fresh), how long you have until your target date, and the annual interest rate you expect your savings to earn. If you are unsure about the rate, entering 0% gives you a safe worst-case figure, since any interest you actually earn only helps you reach the goal sooner. Results include your required monthly savings, the total you will contribute out of pocket, the interest earned, your goal amount, and the number of months in your plan.
Because RapidTools is 100% client-side, every calculation runs privately in your browser. None of the figures you enter are sent to a server, stored, or shared — your financial details never leave your device. Keep in mind that the tool assumes a constant interest rate and on-time monthly deposits, and does not account for taxes, fees, or inflation, so treat its output as an educational estimate rather than a guarantee. For decisions about specific accounts or investments, consult a licensed financial professional.
Getting a number is only useful if you know what to do with it. Here is what each line of your result is telling you and the decision it should inform:
When you run the numbers, the calculator also shows a short plain-language summary beneath your results that splits the goal into your contributions versus interest and flags when the required monthly amount looks steep.
Suppose Devon wants to save $30,000 for a home down payment. He already has $5,000 set aside, has 5 years (60 months) to reach the goal, and keeps his savings in an account earning 4% annually.
Reading that result: of the $30,000 goal, about $26,600 comes from Devon (his $5,000 head start plus $21,600 in deposits) and about $3,400 comes from interest. If $360 a month were too much, stretching the timeline to 6 years or moving to a higher-yield account would both push the monthly figure down.
Once you have a monthly figure, use it to build a habit rather than just to satisfy curiosity:
A quick reference for the terms you will meet when planning a savings goal:
In the United States, bank deposits are insured by the FDIC (see the sources below). In Canada, the Canada Deposit Insurance Corporation (CDIC) protects eligible deposits at its member institutions up to $100,000 per insurance category, per member institution. Savings accounts, chequing accounts and GICs are eligible; mutual funds, stocks, bonds and ETFs are not. Deposits held in a TFSA, an RRSP and some other registered plans are each a separate category, so each can be protected up to $100,000 at each member. The protection is free and automatic (CDIC: what is covered).
The required monthly figure uses the future value of an ordinary annuity formula, PMT = R × i ÷ ((1 + i)n − 1), where R is the amount still needed after any existing savings grow to the target date, i is the monthly interest rate (annual rate ÷ 12), and n is the number of months. When the rate is 0%, the payment is simply the remaining amount divided by the number of months. Existing savings are grown forward with compound interest before the gap is calculated. All math runs in your browser and no inputs are stored or transmitted.
Formula and guidance last reviewed October 2026. Savings account yields change frequently and vary by institution — verify current rates before relying on a figure. This tool is for planning and education, not financial advice.
Planning the whole picture? These free, private calculators pair naturally with your savings goal math:
The calculator first grows any money you have already saved to your target date, then figures out how much the remaining gap requires each month. When you enter an interest rate, it uses the future value of an ordinary annuity formula: PMT = R * i / ((1 + i)^n - 1), where R is the remaining amount needed, i is the monthly interest rate, and n is the number of months. When the rate is 0%, it simply divides the remaining amount by the number of months. The result is the fixed monthly deposit that lands you exactly on your goal.
Yes, especially over longer timelines. Because each monthly deposit earns interest until your target date, the account grows faster than the sum of your contributions, so you need to set aside less each month to reach the same goal. For a $20,000 goal in five years, saving at 0% requires about $333 per month, while saving in a 4% account requires roughly $302 per month. The gap widens the longer the timeline and the higher the interest rate.
Money you have already saved is a head start, and the calculator accounts for it in two ways. First, it subtracts that balance from your goal, so you only have to fund the gap. Second, if you enter an interest rate, it grows your existing balance to the target date, so it may cover even more of the goal than its current value suggests. Enter your current savings in the 'Amount already saved' field to see a lower required monthly contribution.
If the required monthly amount is more than your budget allows, you have three levers: extend your timeline, lower your goal, or increase the interest rate you earn by moving savings to a higher-yield account. Extending the deadline has the biggest effect because it spreads the same goal across more months and gives your money more time to grow. Even saving a partial amount consistently gets you meaningfully closer than waiting until you can afford the full contribution.
The total you set aside matters far more than how often you deposit it. This calculator works in monthly contributions because most people budget around monthly income, but you can split the amount however suits your pay schedule — for example, saving one quarter of the monthly figure each week. Automating deposits to line up with your paydays makes the habit easier to keep, which is the factor that most affects whether you actually reach your goal.
For short-term goals held in cash, use a conservative rate you can actually earn today. High-yield savings accounts and money market accounts have recently offered roughly 4% to 5%, certificates of deposit are in a similar range, and a standard checking or savings account may pay well under 1%. If you are unsure, entering 0% gives you a safe, worst-case number, since any interest you do earn only helps you reach the goal sooner.
Automate the transfer so the money moves to your goal account on payday before you can spend it, a habit often called paying yourself first. Keep goal savings in a separate account so the balance is not mingled with everyday spending money. Review your progress every few months and re-run the calculator if your timeline, income, or goal changes, adjusting the monthly amount as needed to stay on pace.
The math is precise for the assumptions you enter: it uses the standard future value of an annuity formula and grows any existing balance to your target date. Real-world results will vary because it assumes a constant interest rate, on-time monthly deposits, and no taxes, fees, or inflation. It is an educational planning tool rather than financial advice or a guarantee of returns. For decisions about specific accounts or investments, consult a licensed financial professional.
Turn it into an automatic habit rather than a monthly decision. Set up a standing transfer that moves the required amount into your goal account the day after payday, before you can spend it — an approach often called paying yourself first. Keep that money in a separate high-yield savings account or a CD matched to your deadline so it earns the yield you assumed and stays earmarked. Then re-run the calculator whenever your income, timeline, or goal changes, and adjust the standing transfer to stay on pace.
For a near-term goal, keep it somewhere safe, insured, and earning interest rather than in a checking account. A high-yield savings account keeps the money liquid and federally insured while paying meaningfully more than a standard account, and has recently offered rates in the general range of 4% to 5%. A certificate of deposit (CD) can lock in a guaranteed rate for a term matched to your deadline, which suits money you are confident you will not touch early. Keeping goal money in a separate account also makes the balance feel earmarked and reduces the temptation to dip into it.
Yes, if they are eligible deposits at a CDIC member institution. The Canada Deposit Insurance Corporation protects them up to $100,000 per insurance category, per member institution, for free and automatically. Savings accounts, chequing accounts and GICs are eligible, while mutual funds, stocks, bonds and ETFs are not. Deposits in a TFSA, an RRSP and some other registered plans are each a separate category. In the United States, deposits are insured by the FDIC instead.
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