Sinking Funds: Save for Big Expenses Before They Hit

A sinking fund is money saved gradually for a known future expense. It turns a stressful bill into a monthly line item.

Sinking Fund vs. Emergency Fund

An emergency fund is for surprises. A sinking fund is for expenses you can predict: car maintenance, annual insurance, gifts, travel, school costs, or device replacements.

The Formula

Divide the target amount by the number of months until you need the money. A $600 annual bill due in 12 months needs $50 per month. A $1,200 trip in 10 months needs $120 per month.

Keep It Separate

Sinking funds work better when they are tracked separately from everyday spending. You do not necessarily need six bank accounts, but you do need six clear balances.

Start with Three Funds

If you are new to the method, choose only three: one annual bill, one repair category, and one joy category. Too many funds can make the system feel heavy before it becomes useful.