Sinking fund.
In plain English
A sinking fund flips the timing on predictable expenses. Instead of a $1,200 insurance premium ambushing December, you move $100 a month into a labeled pot all year and the bill lands on a full account. It works for anything with a date and a price: car registration, holidays, travel, annual subscriptions, a roof you know is seven years from failing. The math is the cost divided by the months you have.
01Why it matters
Most "emergencies" are actually irregular-but-certain expenses with bad timing. Sinking funds remove them from the emergency category, which protects the real emergency fund and ends the borrow-from-yourself cycle.
02The math, step by step
Known annual lumps: $1,200 insurance, $600 holidays, $480 car registration and maintenance is $2,280. One automatic transfer of $190/month into a separate savings bucket, and every one of those bills is boring.
Illustrative example. The amounts here are hypothetical, chosen to show how the math works, not real quoted rates or figures.
03What this is NOT
The emergency fund is for the unknown (job loss, the transmission). Sinking funds are for the known. Mixing them means the car registration quietly eats the job-loss cushion.
Plain-English answers from our glossary. Receipts included. Never advice.
Educational tool. Answers come only from ClearMoneySchool's published glossary and are not advice. Why we never give advice