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Savings Plan Calculator

Total a scheduled savings plan with daily, weekly, bi-weekly, or monthly deposits that stay flat or increase by a fixed amount.

Published

Final balance
Total saved
$1,378.00
First deposit
$1.00
Last deposit
$52.00
Average deposit
$26.50
Plan length
52 deposits (1 years)

52 deposits starting at $1.00 and rising by $1.00 save $1,378.00.

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Results update as you type.

Build an increasing-deposit schedule

Use this schedule for a saving challenge with daily, weekly, biweekly, or monthly deposits. Choose the number of deposits, then either enter a first deposit plus a fixed increase, or enter a target balance and let the schedule derive the first deposit. No interest is included.

Arithmetic sequence

This is product-defined arithmetic. The number of deposits is rounded to a whole number n. In deposit mode, the last deposit is first + (n - 1) × increase; total saved is n × (first + last) / 2. In target mode, the first deposit is selected so that this arithmetic sequence totals the target, but it is floored at zero. Plan length is n / deposits per year.

For 52 weekly deposits beginning at $1 and increasing by $1 each time, the last deposit is $52, the average is $26.50, and total saved is $1,378 over one year. In target mode, 12 monthly deposits targeting $1,200 with a $10 increase begin at $45, end at $155, and average $100. Compare the first and last deposits—not just the average—to decide whether the ramp is workable.

Target-mode caution

If the chosen increase alone would overshoot a low target, flooring the first deposit at zero does not reduce later deposits; the final total can exceed the target. Review the displayed total and last deposit before adopting the schedule.

Frequency and mode must be recognized, deposits must number at least one, and monetary inputs cannot be negative. Blank entries, invalid numbers, and unknown options are rejected. Fractions in the deposit count are rounded. The model omits interest, fees, missed deposits, calendar dates, and irregular changes.

This is a planning aid, not investment advice. Use the savings goal calculator when the task is a monthly contribution with interest rather than a fixed arithmetic increase.

Frequently asked questions

Does the savings plan calculator include interest?
No. This calculator totals the deposit schedule only. That makes it appropriate for cash envelopes, short challenges, jars, or automatic transfers where the saving behavior matters more than interest. For a plan that compounds interest, use the savings calculator instead.
How does target mode work?
In target mode, the calculator works backward from your desired final balance and planned per-deposit increase. It estimates the first deposit needed so the arithmetic sequence adds up to the target. If the increase alone would exceed the target, it floors the first deposit at $0.
Why is the last deposit important?
A rising savings challenge can become unrealistic near the end. The last deposit shows the largest payment required by the schedule. If that amount would strain your cash flow, lower the increase, reduce the target, or add more periods before starting.
How is this different from a sinking fund?
A savings plan is a behavioral deposit schedule and does not include interest. A sinking fund calculator solves for an equal contribution needed to accumulate a planned future amount while earning interest at a selected compounding frequency over a stated number of years.

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Savings Plan Calculator updated at