Sinking Funds

Sinking Funds

The transmission fails in March and the garage wants €1,800. On an installment loan at 14% over two years, that repair costs €2,074 — the €1,800 plus €274 in interest. Saving €90 a month for twenty months costs €1,800 and nothing else. The repair is not the emergency. The absence of a fund for it is.

Most emergencies were on the calendar

A sinking fund is a separate savings balance for one specific, predictable expense. Christmas arrives every December. The car needs tyres and an inspection eventually. Insurance premiums, the licence fee, the dentist, the boiler, the laptop: all of them were knowable a year in advance. Almost nothing that people call a financial emergency actually qualifies.

The ones that do qualify are the others. A job loss, a serious illness, a death in the family, a burst pipe at midnight. Those are what the emergency fund is for, and mixing them with predictable costs is why so many emergency funds never stay full.

What happens without one

Two versions of the same €1,800 repair, one with a fund and one without:

The interest is the visible cost. The invisible one is the timing: a fund lets you pay the garage on Friday and keep the rest of the month intact, while a loan pushes everything else back for two years.

What a sinking fund is not

It is not a holiday account you raid for a weekend, and it is not your emergency fund with a different label. Three rules separate the two.

• One purpose per account. A pot called "car and gifts and maybe laptop" gets spent on whatever comes first.
• The balance is allowed to fall to zero. Spending it on the thing you saved for is the plan working, not a failure.
• It stays accessible. Cash or an instant-access savings account. Money you need in March does not belong in the stock market, where March might be a bad month.

Setting one up with real numbers

The method is four steps and fits on an index card: list every irregular expense from the last twelve months, add up each category, divide by twelve, and move that amount on payday. Here is what €350 a month covers across the four largest categories of a household with net income of €3,600.

Twelve payments of €350 come to €4,200, which is exactly the annual total. The list is worth checking against the €1,200 Christmas budget too: one twelfth of that is €100 a month, and paying it monthly feels like nothing next to finding €1,200 in December.