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Sinking funds explained

A sinking fund is a small pot of savings for a cost you know is coming: car insurance, holidays, gifts, a new phone.

How it works

Take the cost, divide by the months until it is due, and save that each month.

Cost When Save each month
$600 car insurance 12 months $50
$480 holiday gifts 8 months $60
$900 new laptop 18 months $50

Common sinking funds

  • Car repairs and servicing
  • Annual subscriptions and memberships
  • Gifts and holidays
  • Medical and dental costs
  • Home repairs
  • Replacing a phone or laptop

How to keep them

Use a savings account with separate pots or nicknamed accounts, or a simple spreadsheet. Automate the transfers on payday.

Sinking fund vs emergency fund

An emergency fund is for things you cannot predict. A sinking fund is for things you can.

Frequently asked questions

What is a sinking fund?

Money you save a little at a time for a known future expense, so it does not come as a surprise.

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