How to use this savings goal calculator
- Savings goal — the amount you want to have, such as a down payment, an emergency fund, a car or a wedding.
- Current savings — money already set aside for this goal. It keeps earning interest while you add to it.
- Time to reach the goal — in years or months. Shorter deadlines need bigger deposits.
- Annual return — the interest rate your savings earn, compounded monthly. Enter 0 if the money will sit in a checking account.
The result is the deposit to make at the end of every month. You also see what that means per biweekly paycheck and per week, plus a year-by-year view of your progress.
The formula behind the monthly amount
First, the calculator works out what your current savings will grow to on their own: S × (1 + i)n, where i is the monthly rate (annual rate ÷ 12) and n the number of months. Whatever is still missing must come from regular deposits. The deposit that grows to that gap is:
PMT = (G − S × (1 + i)n) × i ÷ ((1 + i)n − 1)
This is the "sinking fund" formula used for planned savings. When the rate is zero there is no growth, and the formula reduces to (G − S) ÷ n.
Worked example
You want $50,000 in 5 years for a home down payment. You already have $5,000 in a high-yield savings account earning 4%.
- Monthly rate: 0.04 ÷ 12 ≈ 0.3333%; months: 60.
- Your $5,000 grows to about $6,104.98 on its own.
- The remaining gap is $43,895.02, which takes a monthly deposit of $662.08.
- Without any interest you would need ($50,000 − $5,000) ÷ 60 = $750.00 a month, so interest saves you about $87.92 per month.
How time and interest change the monthly deposit
Monthly saving needed to reach $20,000 from zero:
| Time | 0% return | 4% return | 7% return |
|---|---|---|---|
| 2 years | $833.33 | $801.83 | $778.78 |
| 5 years | $333.33 | $301.66 | $279.36 |
| 10 years | $166.67 | $135.82 | $115.55 |
Over two years, interest trims the deposit by only a few percent — the deposits do almost all the work. Over ten years, a 7% return cuts it by about 30%. For short deadlines, the realistic way to save less each month is to start sooner or lower the target.
Where to keep the money
The right place depends on when you need it. Money for goals within a few years is usually kept somewhere stable — a high-yield savings account, a money market account or a certificate of deposit — because a stock market drop right before your deadline could leave you short. Longer-range goals can tolerate more risk in exchange for a higher expected return, but there is no guaranteed rate for investments. This calculator gives an estimate, not investment advice.
Tips for hitting your goal
- Automate it. Schedule a transfer for the day after payday so the money moves before you can spend it.
- Use a separate account. Naming an account after the goal ("House fund") makes it less tempting to dip into.
- Put windfalls to work. Tax refunds, bonuses and gifts can shorten your timeline considerably — recalculate after each one.
- Revisit the plan. When your income, rate or deadline changes, rerun the numbers and adjust the transfer.
- Find room in your budget. Our budget calculator shows how the 50/30/20 rule sets aside money for savings.
Frequently asked questions
What if my current savings are already enough?
If your savings will grow past the goal on their own by the deadline, the calculator shows a monthly amount of $0 and tells you what the balance should reach.
Should I include interest in my plan?
Include it if the money sits in an account that pays a predictable rate. For invested money, use a conservative rate — or plan at 0% and treat any growth as a buffer.
How do I save for several goals at once?
Run the calculator once per goal and add the monthly amounts. If the total does not fit your budget, rank the goals — an emergency fund usually comes first — and extend the deadlines of the others.
How do I turn the monthly amount into a per-paycheck amount?
Multiply the monthly amount by 12 and divide by the number of paychecks per year: 26 if you are paid every two weeks, 24 if twice a month. The calculator shows the biweekly figure for you.
Does inflation affect my goal?
For goals more than a few years away, yes. If something costs $30,000 today and prices rise 3% a year, it will cost about 30,000 × 1.035 ≈ $34,800 in five years. Enter the inflated amount as your goal.
Last updated: October 8, 2026