Sinking fund

Money set aside in small regular amounts for a known future expense, so the cost does not hit all at once.

What it means

A sinking fund spreads a predictable large expense over the months leading up to it. Common examples include annual insurance premiums, holiday gifts, car registration, a vacation, a new laptop or eventual car replacement. You divide the expected cost by the months remaining and save that amount each month.

It differs from an emergency fund, which is for unknown surprises. Many people keep several sinking funds, either as separate savings accounts or as labeled categories within one account. The term also has a corporate meaning, where a bond issuer sets aside money to retire debt over time.

Example

Suppose your car insurance renews for $1,200 in 12 months. Saving $100 a month into a sinking fund covers the full premium when it is due.

How it’s used

Paying annual or semiannual bills without disrupting a monthly budget
Saving for planned purchases like a car, furniture or travel
Covering predictable home and car maintenance

Strengths and weaknesses

Strengths

Turns large bills into manageable monthly amounts
Avoids putting planned expenses on a credit card
Protects the emergency fund for true emergencies

Weaknesses

Requires estimating costs and timing in advance
Ties up cash that could be used for other goals
Multiple funds can be harder to track

Educational information only, not financial, tax or legal advice. Rules, limits and rates change; check the IRS, your lender or plan, or a qualified professional before acting.