Sinking funds
My budget worked perfectly for three months. Then the yearly bills arrived, all at once, and blew it apart.
In Level 1 you met irregular expenses: costs that don’t come every month, like renewals, repairs, travel and festive spending. They’re the most common reason budgets fail. The fix is a sinking fund.
A sinking fund is money you set aside a little at a time for a cost you know is coming. When the bill arrives, the money is already there.
How it works
- List your big, non-monthly costs for the next year, and what each will cost.
- Divide each one by the number of months until it’s due. That’s what you save each month.
- Keep the money separate, so it doesn’t get spent on something else.
Say your phone insurance renews in 10 months and costs $200£150€150₦60,000$200. Set aside $20£15€15₦6,000$20 a month, and when the renewal arrives, it’s already paid for.
Sinking fund or emergency fund?
They’re not the same thing:
- A sinking fund is for costs you know are coming: the yearly renewal, the festive season, a holiday.
- An emergency fund is for things you can’t predict: losing your job, a medical bill, a sudden repair. You’ll build one in Level 3.
Once I started sinking funds, December stopped being a crisis. It was just another month I’d already paid for.


