How much should I save each month to reach my goal?

Divide your goal horizon into months, then solve the future-value annuity formula for the contribution. The required monthly contribution M = (G - P(1+i)^n) * i / ((1+i)^n - 1), where G is the goal, P is current savings, i is the monthly rate, and n is the number of months.

How is APY used in a savings calculator?

APY (Annual Percentage Yield) is the effective yearly return including compounding. To get a monthly rate, convert with i = (1 + APY)^(1/12) - 1, then compound the balance month over month.

What is the 50/30/20 rule?

A budgeting guideline that allocates 50% of after-tax income to needs, 30% to wants, and 20% to savings and debt repayment.

Calculators / Savings Goal Calculator

Savings Goal Calculator

Set a savings target and find out exactly how much to set aside each week, paycheck, or month — or how long a fixed contribution will take to get you there. Interest compounds monthly at your chosen APY.

Your goal

Mode

Savings goal

Current savings

Annual interest rate (APY) 4.50%

Contribution frequency

Plan summary

Progress toward goal

Starting at $5,000 10.0% of $50,000

Required monthly contribution

$1,222.06

How your balance grows

Total balance Contributions

The gap between the gold contributions line and the green balance area is the interest you earn along the way.

Growth schedule

Period	Balance	Contributions	Interest

How a savings goal is calculated

Reaching a savings goal is a mix of three forces: the money you already have, the money you add on a schedule, and the interest that money earns. This calculator treats interest as compound interest — meaning each month's interest is earned on your entire balance, including all the interest you've already banked. That compounding is what turns steady, modest deposits into a surprisingly large sum over time.

We convert your annual percentage yield (APY) into a monthly rate, then grow the balance month by month. The tool runs in two modes: Required Contribution works backward from your goal and deadline to tell you how much to save, while Time to Goal works forward from a contribution you can afford to tell you when you'll arrive.

The formula behind the numbers

The future value of a savings balance with regular contributions combines a lump-sum term and an annuity term:

Balance = P(1 + i)ⁿ + M × [ (1 + i)ⁿ − 1 ] / i

Here P is your current savings, M is your monthly contribution, i is the monthly interest rate derived from APY as i = (1 + APY)^1/12 − 1, and n is the number of months. In Required Contribution mode we rearrange this to solve for M; in Time to Goal mode we solve for n. When the rate is zero, the formula simplifies to plain division: M = (Goal − P) / n.

Start with an emergency fund

Before chasing big goals, financial planners almost universally recommend a starter emergency fund. The typical target is 3 to 6 months of essential expenses — enough to cover housing, food, utilities, and insurance if your income stops. A smaller $1,000–$2,000 "starter" fund is a great first milestone that absorbs surprise car repairs or medical bills without forcing you into debt. Keep this money in a separate, easily accessible high-yield savings account so it's there when you need it but isn't tempting to spend.

The 50/30/20 budgeting rule

Popularized by Senator Elizabeth Warren, the 50/30/20 rule is a simple way to split your after-tax income:

50% — Needs: rent or mortgage, groceries, utilities, insurance, minimum debt payments, and transportation.
30% — Wants: dining out, entertainment, travel, hobbies, and other discretionary spending.
20% — Savings & debt payoff: retirement contributions, emergency-fund deposits, extra debt payments, and other financial goals.

If you direct that 20% toward the goal you're modeling here, the Time to Goal mode will show you exactly how soon you'll get there. You can also flip to Required Contribution to check whether your target fits comfortably within that 20% bucket.

Proven savings strategies

Automate it. Set up an automatic transfer on payday. Money you never see in checking is money you don't accidentally spend — the single highest-impact habit for consistent saving.
Pay yourself first. Treat your savings contribution like a non-negotiable bill that's due the moment you're paid, before any discretionary spending.
Use a high-yield account. Online savings accounts often pay several times the rate of traditional banks. At 4.5% APY, a $40,000 balance earns roughly $1,800 a year for free.
Save raises and windfalls. Funnel bonuses, tax refunds, and pay raises straight into savings. Your lifestyle doesn't miss money it never adjusted to.
Increase contributions over time. Bump your deposit up by 1% whenever you can. Small increases are barely noticeable but dramatically shorten your timeline thanks to compounding.
Break the goal into milestones. A $50,000 goal feels distant; $5,000 chunks feel achievable. Celebrate each milestone to stay motivated.

Tips for using this calculator

Switch the contribution frequency to weekly or bi-weekly to match your real pay schedule — you'll see the equivalent deposit for each.
Drag the APY slider to compare a regular savings account against a high-yield account and watch interest earned jump.
In Time to Goal mode, raise your contribution slightly to see how many months you can shave off — the chart shows the difference clearly.
Toggle the mode to stress-test: find the contribution, then check whether a comfortable deposit still gets you there in a reasonable time.
All inputs are saved automatically in your browser — nothing is sent anywhere, and your values are waiting when you return.

Disclaimer

This calculator provides estimates for educational and planning purposes only. Actual APYs, compounding methods, and account terms vary by institution, and taxes may apply to interest earned. Always confirm rates and details with your bank or financial advisor before making decisions.