Sinking Funds: A Calm Way to Prepare for Life’s Costs
A simple method to spread the cost of birthdays, car bills, school expenses and more — without stress.
What Is a Sinking Fund?
A sinking fund is a small pot of money you set aside regularly for an expense you know is coming. It’s not an emergency fund. It’s not long-term savings. It’s a calm, organised way to prepare for predictable costs like car MOTs, birthdays, school uniforms and Christmas.
Why Sinking Funds Work for Families
Family life is full of predictable chaos — school trips, uniforms, birthdays, car repairs, holidays. Sinking funds remove the panic because you:
spread the cost over the year
avoid dipping into savings
stop relying on credit
feel more in control
stop the guilt of “I should have planned for this”
How to Set Up a Sinking Fund
Three simple steps:
1. List the expenses
List the expenses you know are coming.
Examples: car MOT, car insurance, birthdays, Christmas, school uniforms, school trips, home repairs, holidays, pet costs.
2. Work out yearly cost
Work out the yearly cost.
Example:
• Car insurance: £480 per year
• Christmas: £600 per year
• Birthdays: £200 per year
3. Divide by 12
Divide by 12 to get your monthly amount.
Example:
• Car insurance: £40 per month
• Christmas: £50 per month
• Birthdays: £16.66 per month
Where Should You Keep Your Sinking Funds?
Use whatever system you’ll actually stick to:
• Bank accounts with “pots” or “spaces” (Monzo, Starling, Chase)
• A spreadsheet
• A notebook
• Cash envelopes
There’s no perfect method, just the one that works for you.
How Many Sinking Funds Do You Need?
Start with 3–5 categories. You don’t need 20. Choose the ones that cause the most stress or biggest financial spikes.
Suggested starter list: • Car costs • Christmas • Birthdays • School expenses • Home repairs
What If You Can’t Afford to Fund Them All Yet?
Start tiny. Even £5–£10 per month is better than nothing. The goal isn’t perfection, it’s progress. You can increase the amounts later when life allows.