Savings Goal Calculator
Turn a savings goal into a monthly plan. Find out exactly how much to save each month to reach your target by your deadline — or how long your current savings plan will take.
Save Each Month
How It Works
The math has three moving parts: your goal, your head start, and the interest your money earns while you save. Your existing savings grow on their own first, then the monthly deposit fills the remaining gap. The formula is monthly deposit = (goal − saved × (1 + r)n) × r ÷ ((1 + r)n − 1), where r is your monthly interest rate (APY ÷ 12) and n is the number of months. If your APY is 0%, it simply divides what is left by the months. In "how long" mode the calculator simulates month by month until the balance reaches the goal.
Time is your biggest lever. Doubling the deadline roughly halves the monthly deposit, because the same gap is spread over twice as many months and interest has twice as long to help. Starting earlier beats saving harder later.
Worked example: you want $10,000 in 12 months, you already have $1,000, and your savings account pays 4% APY. Your $1,000 grows to $1,040.74 on its own. The remaining gap is filled by saving $733.02 a month — $169.16 a week, or $338.31 out of each biweekly paycheck. Over the year you deposit $8,796.19 and interest adds $203.81. With no interest at all, the same goal would need $750 a month.
How to Use This Calculator
This calculator turns a savings goal into a concrete monthly plan, and it works in two directions — either find the monthly deposit you need for a deadline, or find how long your current plan will take.
- Choose what to find out. Pick "How much to save each month" if you have a deadline, or "How long it will take" if you already know what you can afford to set aside.
- Enter your goal and your head start. Set the total you want to end up with, and enter anything you have already saved — your existing savings keep earning interest while you save, so they lower the monthly deposit you need.
- Enter your interest rate. Use the APY of the account where the money will sit, compounded monthly. Use 0% if the money will earn no interest. The default of 4% is only an example — enter your account's actual rate.
- Set your deadline or your deposit. In deposit mode, enter the months until your deadline; in time mode, enter the monthly amount you can afford.
- Read the plan. You get the monthly deposit (or the time to goal), the goal date, weekly and per-paycheck equivalents, total deposits, interest earned, and a year-by-year growth table.
For example, reaching $10,000 in 12 months starting with $1,000 saved at 4% APY takes $733.02 a month — $169.16 a week, or $338.31 from each biweekly paycheck. With no interest at all, the same goal would need $750 a month.
Tips and Practical Advice
The hardest part of saving is rarely the math — it is sticking to the plan month after month. The most effective habit is to automate the deposit: set up a transfer on payday so the money leaves before you can spend it. A plan you have to remember each month is a plan that gets skipped.
- Start earlier rather than saving harder. Time is your biggest lever: doubling the deadline roughly halves the monthly deposit, because the same gap is spread over twice as many months and interest has twice as long to help.
- Give each goal its own account or label. Mixing a holiday fund, a car fund and an emergency fund in one balance makes it easy to raid one goal for another. Separate pots keep each plan honest.
- Use the rate your money actually earns. A high-yield savings account pays more than a regular checking account — but rates change, so re-check your APY if it moves.
- If the monthly figure is too high, move the deadline first. Stretching the goal by a few months usually cuts the deposit more comfortably than squeezing your budget.
- Remember what is not included. Interest on savings may be taxable, and inflation reduces what your goal amount will buy. The calculator shows the deposit needed to reach the exact dollar goal you enter.
Results are estimates only and not financial advice. Deposits are assumed to be made at the end of each month.
Frequently Asked Questions
How much should I save each month to reach my goal?
It depends on your goal, your deadline, what you have already saved, and the interest your savings earn. For example, to reach $10,000 in 12 months starting with $1,000 saved at 4% APY, you need to save $733.02 a month. Enter your own numbers above for the exact figure.
How does interest change the monthly amount?
Interest does some of the work for you, so the monthly deposit is lower than the goal divided by the months. Reaching $10,000 in 12 months from zero takes $833 a month with no interest, but about $818 a month at 4% APY. Over longer deadlines the difference is much bigger.
What rate should I use for my savings?
Use the APY of the account where you will keep the money. A high-yield savings account pays more than a regular checking account, which may pay close to nothing. Use 0% if the money will sit in an account that earns no interest.
What if I already have some savings put aside?
Enter it in the "already saved" field. Your existing savings keep earning interest while you save, so they lower the monthly deposit you need. In the worked example, $1,000 already saved grows to $1,040.74 in a year at 4% APY.
Does the calculator account for taxes or inflation?
No. Interest on savings may be taxable, and inflation reduces what your goal amount will buy by the time you reach it. The calculator shows the deposit needed to reach the exact dollar goal you enter, using the APY you enter.
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