Savings Goal Calculator
Set a target and what you’ve already saved. See the monthly deposit you need to reach it by a date, or how long it takes at a deposit you choose. Add interest for a fuller picture.
Calculate
Monthly savings needed
The formula
Without interest, monthly deposit = (goal − already saved) ÷ months. With an annual rate, interest compounds monthly and deposits are treated as end-of-month: solve for the payment (or months) in the future-value annuity equation.
Worked example
- Goal $10,000; already saved $2,000; 12 months; 0% interest
- Still to save = $8,000
- Monthly = $8,000 ÷ 12 ≈ $666.67
Result: ≈ $666.67 per month · goal in 1 yr
How the savings plan is calculated
Choose whether you know the deadline (monthly amount) or the deposit (time to goal). Interest is optional and compounds monthly.
Flat saving (0% interest)
Monthly deposit = (goal − already saved) ÷ months. If you are already at or past the goal, the required deposit is zero. Time-to-goal mode counts how many equal monthly deposits close the gap.
With interest
We use a monthly rate r = annual ÷ 12 ÷ 100. Balance grows as FV = P(1+r)^n + PMT×((1+r)^n − 1)/r with end-of-month deposits. Solving for PMT or iterating months gives the plan shown in the chart and milestones.
What we do not model
No taxes, fees, employer matches, variable rates, or irregular extra deposits. Inflate distant purchase goals separately if prices will rise.
Interesting facts
Pay yourself first
Automating a transfer on payday is one of the most reliable habits — you budget with what remains.
High-interest debt first
If revolving credit costs far more than your savings yield, paying it down often beats parking cash.
Emergency fund baseline
Many planners suggest 3–6 months of essential expenses in liquid savings before aggressive investing.
Interest helps long horizons
Over multi-year goals, even a modest APY can lower the deposit you need — toggle Add interest to see the effect.
Sinking funds
Separate pots for car repairs, gifts, and insurance premiums keep surprise costs from raiding the main goal.
Frequently asked questions
Subtract what you already have from the target, then divide by the months until you need the money — or let this calculator do it, with optional interest.
For short goals, 0% is a conservative plan. For multi-year goals in an interest-bearing account, open Add interest and enter an approximate APY.
Required monthly savings shows as zero — you have already covered the target under this model.
Enter the monthly deposit you can make. We count how many months it takes to reach the target from your current balance (with optional interest).
A common rule of thumb is 3–6 months of essential expenses. Set that dollar amount as your goal, then work backward to months and monthly deposits.
References
- Saving and budgeting tools Consumer guidance on savings accounts and building balances.
- MyMoney.gov — Save and invest Federal financial-education portal covering saving habits.
- Emergency savings Practical framing for emergency-fund goals.