Find the bills that break a monthly budget
Go through the last 12 months of bank and card statements and list anything that is predictable but not monthly: insurance billed every six months or yearly, vehicle registration, property or other tax bills paid directly, annual subscriptions, school fees, holiday gifts and recurring maintenance. Record the amount and the next due date for each.
The CFPB Your Money, Your Goals toolkit includes a bill calendar for laying out when bills are due and a savings plan tool for setting aside money toward a goal. [1] A sinking fund is those two ideas combined: the calendar tells you when, the plan tells you how much each month.
Worked example: starting late, then settling
The bills and dates are invented. Car insurance of $1,140 is due in 6 months and every 6 months after that. Registration of $180 is due in 9 months. Holiday gifts of $600 are needed in 3 months. An annual subscription of $99 renews in 11 months.
The catch-up amount divides each bill by the months left: $1,140 / 6 = $190, $180 / 9 = $20, $600 / 3 = $200 and $99 / 11 = $9. That totals $419 a month at first. The steady amount once every bill is on schedule divides the yearly cost by 12: $2,280 / 12 = $190 for insurance, $180 / 12 = $15, $600 / 12 = $50 and $99 / 12 = $8.25, a total of $263.25. Most of the early extra is the gift fund, which drops once that bill is paid.
| Invented bill | Next due | Catch-up per month | Steady per month |
|---|---|---|---|
| Car insurance, $1,140 twice a year | In 6 months | $190 | $190 |
| Registration, $180 a year | In 9 months | $20 | $15 |
| Holiday gifts, $600 a year | In 3 months | $200 | $50 |
| Annual subscription, $99 | In 11 months | $9 | $8.25 |
| Total | $419 | $263.25 |
If the catch-up amount does not fit
- Ask whether a bill can be paid in installments; some insurers and agencies offer this, sometimes with a fee you should compare.
- Shrink a flexible line such as gifts before you touch an emergency fund.
- Cancel subscriptions you would not renew if the bill arrived today.
- Accept a smaller shortfall on one bill and cover it from that month's spending budget, rather than from credit.
- Move a due date if the provider allows it, so large bills do not cluster in the same month.
Irregular bills that are easy to leave off the list
Review the list once a quarter. Update any amount that changed at renewal and recalculate the catch-up figure for that line; the steady figure only changes when the yearly cost does.
If a fund ends the year with money left, roll it into next year's line for the same bill rather than spending it; the next catch-up amount then shrinks. If a fund comes up short, note by how much so next year's estimate starts from the real number rather than the old one.
- Insurance billed every six or twelve months: auto, renters, homeowners, life.
- Vehicle registration, inspections, and driver's license or passport renewals.
- Annual memberships, software and streaming plans billed yearly.
- Medical items that recur, such as eyeglasses or a known annual deductible.
- School supplies, activity fees, birthdays and holidays.
- Home and car maintenance you can expect even if the exact date varies.
Where to keep the money and how to track it
Keep the funds somewhere you can reach on the due date without a penalty, separate from everyday checking so they are not spent by accident. A savings account at an insured bank fits most cases; see the APY and fee guide before paying a fee for interest. For tracking, a spreadsheet with one column per fund works. Budgeting apps such as Lunch Money, PocketSmith and YNAB are on the shortlist for readers who already want an app for other reasons; confirm current prices on each vendor's page before subscribing.
If your annual bills already land without stress, keep your current method: the worksheet is only useful when an irregular bill keeps catching you short. This guide is US consumer education, not personalized advice.
Questions before you decide
Is a sinking fund the same as an emergency fund?
No. A sinking fund is for bills you can predict, such as an insurance premium or a registration renewal. An emergency fund is for costs you cannot predict, such as a sudden repair or loss of income. Keeping them separate stops planned bills from draining the emergency cushion.
Do I need a separate bank account for each fund?
No. One savings account with a spreadsheet or app tracking each fund's balance works. Some people use separate accounts for visibility; check that any account you add has no fee that outweighs the benefit.
Do I need a paid budgeting app for this?
No. A spreadsheet handles the arithmetic. A paid app is only worth it if you already want its other features, as the budget app or spreadsheet guide explains.
Follow the sources
- CFPB: Your Money, Your Goals tools (bill calendar, savings plan) Checked Oct 13, 2026
Provider terms can change. Recheck the linked source before applying or subscribing.