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Sinking Fund Calculator

Plan ahead with a sinking fund calculator

Enter a future expense, target amount, current savings, due date, and monthly contribution. Beelinger will show how much to set aside each month so predictable expenses do not surprise your budget.

Free calculator No signup required Monthly target Built for planned expenses
12 mo
Annual bills
52 wk
Weekly set-asides
$0
No signup

A sinking fund helps you prepare for expected expenses. Use this calculator for car insurance, holiday gifts, vacations, property taxes, school expenses, home repairs, medical bills, moving costs, business expenses, and other planned bills.

Step 1

Calculate your set-aside amount

Add the expected cost, what you already saved, the due date, and what you can contribute each month.

Examples: car insurance, holiday gifts, vacation, annual subscriptions, or home repairs.

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Use the date when the bill or expense is expected.

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Use the amount you can set aside consistently each month.

What is a sinking fund?

A sinking fund is money you set aside for a known future expense. Instead of waiting for a large bill to hit your budget all at once, you break the cost into smaller monthly amounts.

Emergency funds are for unexpected expenses. Sinking funds are for expected expenses you can plan for in advance.

Sinking fund examples

ExpenseWhy plan ahead?
Car insuranceOften paid every 6 or 12 months.
Holiday giftsPredictable every year but easy to underplan.
VacationHelps avoid putting travel on a credit card.
Home repairsCreates cash for maintenance before something breaks.
Annual subscriptionsPrevents yearly renewals from surprising your budget.

What to do after you get your number

  • Create a separate savings bucket for this expense if your bank allows it.
  • Automate the monthly transfer so the money moves before you spend it.
  • Review the target if the due date, price, or priority changes.
  • If the monthly amount is too high, adjust the timeline or reduce the target.

Helpful next tools

Use these related tools to organize your expected expenses, savings goals, emergency fund, and monthly budget.

https://tools.beelinger.com/

Make predictable bills easier to handle

Once you know the monthly set-aside amount, add it to your budget and treat it like a regular bill to your future self.

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Sinking Fund Calculator FAQ

What is a sinking fund?

A sinking fund is money you save for a known future expense. It helps you prepare for planned costs instead of reacting when the bill arrives.

How do I calculate a sinking fund?

Subtract your current savings from the target amount, then divide the remaining amount by the number of months or weeks until the due date.

What expenses should have a sinking fund?

Good sinking fund categories include car insurance, car registration, holiday gifts, vacations, annual subscriptions, property taxes, school expenses, medical bills, home repairs, moving costs, and business expenses.

Is a sinking fund the same as an emergency fund?

No. An emergency fund is for unexpected expenses. A sinking fund is for expected expenses you can plan for before they happen.

Where should I keep sinking fund money?

Keep sinking fund money somewhere safe and easy to access, such as a savings account or a separate savings bucket. The goal is availability, not investment growth.

What if I cannot save enough before the due date?

You can increase your monthly contribution, move the due date if possible, lower the target amount, or split the expense into a smaller first milestone.

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