Contribution per date = (target − current allocated savings) ÷ remaining contribution dates. Use real deposits and real dates when you update the plan.
Write down three inputs
Target: the amount needed for this specific goal. Current savings: money already allocated to it, excluding money promised to another goal. Remaining contribution dates: the paydays or other dates on which you can contribute before the money is needed.
A deadline expressed as “in three months” is not the same as three paydays for everyone. Count the actual dates. If a bill is due before the last payday of the month, that payday cannot help pay it on time.
Calculate the remaining gap
| Target | Already allocated | Dates remaining | Contribution per date |
|---|---|---|---|
| $1,200 | $300 | 9 | $100 |
| $800 | $200 | 12 | $50 |
| $2,000 | $500 | 10 | $150 |
For the first example, $1,200 minus $300 leaves $900, divided across nine dates. If you already have the full target, the additional amount required is zero. If there are no contribution dates left and a gap remains, the original deadline cannot be met through that schedule.
These examples show arithmetic rather than recommended savings amounts. The plan still needs to fit essential expenses and other commitments.
Round carefully when the answer has cents
Suppose the gap is $1,000 with six contribution dates remaining. The division gives approximately $166.6667. Six deposits of $166.66 would total $999.96, leaving four cents. One workable schedule is five deposits of $166.67 followed by $166.65.
For a larger real-world buffer, you might choose a slightly higher target to account for an uncertain expense, but name that buffer separately in your plan. Avoid hiding assumptions in rounded numbers you will no longer understand later.
Recalculate after the unexpected
Return to the $1,200 goal with $300 already saved and nine dates left. After two planned $100 deposits, the allocated balance is $500 and seven dates remain. If the next contribution is missed, the balance stays $500 and six dates remain. The new gap is $700, or about $116.67 per remaining date.
An extra $100 contribution would reduce that gap instead. Recalculate from the current actual balance; do not add the original plan’s future deposits to money already saved.
When a higher required amount is not affordable, your available choices include a later deadline, a smaller target or a revised spending plan. A contribution formula shows the tradeoff; it does not choose it for you.
Keep a record you can check at a glance
In Savings Goal Tracker, give the goal a concrete name, record the target and add contributions when they happen. Review its balance against the place where the money is actually held. The app records progress; it does not execute bank transfers.
If you prefer a challenge with increasing contributions and no fixed purchase date, try the 52-week calculator. If you have several targets, read the guide to separate funds before assigning the same account balance across them.
A useful plan stays understandable after a busy month: what the goal is for, how much is truly saved, and what remains before the next review.
Common questions
Should I count expected bonuses as current savings?
No. Keep expected money in the plan and add it to the saved balance only when you receive and allocate it.
What if I miss a deposit?
Subtract the actual current balance from the target and divide by the remaining contribution dates. Then decide whether the new amount or the deadline needs adjustment.
References and further reading
Published by Moocsoft, the independent studio behind Savings Goal Tracker. Examples and worksheets are illustrative. App features can vary by platform and version; see the store listing for current availability and in-app purchases.