Decide with your numbers
Sinking Fund Planner
Prepare for insurance, enrollment, registration and other irregular expenses. Plan several goals and see monthly and per-payday savings, progress and funding gaps.
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Plan your irregular expenses
Add up to twelve goals. Only count savings assigned to this goal; the same peso cannot fund two targets.
A sinking fund is a planned expense in small pieces
A predictable bill should have a place in the budget before its due month. A sinking fund sets cash aside for a named cost and date: car registration, insurance, school enrollment, Christmas, travel, subscriptions or repairs you already expect.
An emergency fund covers an urgent disruption you cannot schedule. Keep the two balances separate so the same savings do not appear to protect an emergency and pay tuition at once.
How monthly and per-payday targets work
The funding gap is target minus savings already assigned, floored at zero. The planner counts complete monthly saving periods from today in Manila to the deadline. Divide the gap by those periods for a conservative monthly contribution, then by the number of saving transfers per month. Figures round up to a centavo.
For a ₱12,000 cost eight full months away, with nothing saved, the target is ₱1,500 per month or ₱750 twice a month. If ₱4,000 is already reserved, the gap becomes ₱8,000 and the monthly target falls to ₱1,000. No interest or investment return is assumed.
Combine goals before committing
Registration at ₱1,500 a month, Christmas at ₱2,000, insurance at ₱1,250 and enrollment at ₱3,000 require ₱7,750 together. Compare the total with repeatable surplus, not the amount left in your account on payday. Separate goals can all look affordable while their sum is not.
Prioritize by consequences, essential use and deadline. A required school payment and an optional trip need not receive equal shares. Lower a flexible target, extend its date or pause it if the combined plan would displace essentials or debt minimums.
When the deadline is too close
With less than one complete month available, or a date already passed, the remaining gap is shown as needed now. It is excluded from the monthly total so an overdue bill does not masquerade as a future savings plan. The extra due-now total must still be funded separately.
Transfers are planning averages rather than actual payroll events. Four transfers each month is not the same as a weekly calendar. Check your real payment dates, begin with the next transfer and confirm enough cash accumulates before each deadline. Move the date or revise the target when that cannot work.
Continue with the next useful step
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Read our calculation methodology and official references. Report an error through Contact.