Budgeting · Updated 2026-10-19

Sinking funds list: 40 examples and how to calculate them

A sinking fund is money you put aside every month for a cost you can already see coming. Car insurance in nine months. A summer holiday in six. December gifts. The boiler service. These bills are not emergencies, they're calendar events, but they wreck a monthly budget if you treat them as surprises.

This guide explains what a sinking fund is (and what it isn't), how to calculate the monthly amount, walks through worked examples with the arithmetic shown, and gives you a starter list of about 40 concrete categories. It also covers how many funds to start with, where to keep the money, and how sinking funds sit next to cash envelopes.

This is general budgeting information, not financial advice. Example figures are for illustration only. If you're dealing with serious debt, a free debt advice service in your country is a better first step.

Sinking fund vs emergency fund vs savings goal

People mix these three up. They all involve setting money aside, but they solve different problems:

• Emergency fund: money for things you cannot predict: a broken boiler you didn't see coming, sudden job loss, an urgent flight home. You hope not to use it. Most advice starts with a small starter amount (often one month of essentials) and builds from there.
• Sinking fund: money for things you can predict, even if the exact date or amount is a bit fuzzy. Annual insurance, holidays, school trips, replacing a phone. You expect to spend it.
• Savings goal: money for something you want, not something that's coming due anyway: a deposit on a flat, an investment account, a big trip that isn't booked yet. Goals are optional; sinking funds are "pay later for something you already know about".

If a cost is on the calendar or highly likely within the next year, it belongs in a sinking fund. If it would be a genuine shock, it belongs in the emergency fund. If it's a want with no deadline, it's a goal.

The formula (and why it works)

The calculation is deliberately boring:

Monthly amount = total cost ÷ number of months until you need the money

That's it. You decide the target, count the months you have, and divide. Round up a little if you want a buffer for price rises, or if you might need the money a month earlier than planned.

A few practical notes:

• Count only the months you will actually transfer money. If you're starting mid-month and payday is tomorrow, that still counts as one contribution month.
• If the bill is annual and you have a full year, divide by 12. If it's due in four months, divide by 4. Don't stretch it to 12 and then scramble.
• If you already have some money saved toward the cost, subtract that from the total first, then divide what's left.

Worked examples (arithmetic checked)

Currency is euros for readability. Use the same maths in dollars, pounds or any other currency.

A small starter set of three funds might look like this (example only):

That €240 is not "extra" saving on top of a broken budget. It is part of the budget. If fixed bills + sinking funds + envelopes add up to more than take-home pay, something has to shrink before the month starts, not when the insurance bill arrives.

How many sinking funds to start with

Start with three to five, not forty. The list below is a menu, not a to-do list. Pick the costs that actually hit you every year, especially the ones that used to raid your grocery money.

A sensible first set for many households:

1. The biggest annual bill you pay (often car or home insurance)
2. One holiday or "travel home" fund
3. December / end-of-year gifts
4. One maintenance fund (car service, or home repairs)
5. One personal/family fund that always catches you out (birthdays, school costs, or dental)

Once those are automatic for a few months, add the next most expensive surprise from last year. If a fund never gets used and you can't remember why you opened it, close it and move the balance somewhere useful.

Sinking funds list: 40 examples by category

Use what fits your life. Cross out the rest. Amounts will differ by country and household. The point is the category, not a recommended euro figure.

Home (6)

• Home or contents insurance (annual premium)
• Boiler / HVAC service
• Appliance repair or replacement fund
• Furniture or mattress replacement
• Garden / outdoor maintenance
• General home repairs and DIY materials

Car and transport (5)

• Car insurance
• MOT / APK (or equivalent annual vehicle check)
• Service, tyres and unexpected repairs
• Road tax or vehicle licence (if paid yearly or quarterly)
• Breakdown cover renewal

Annual bills and memberships (5)

• Life, liability or other annual insurance
• Professional body or union fees
• Club, gym or streaming paid yearly
• Software or cloud storage annual renewals
• Domain, hosting or small business renewals

Kids and family (5)

• Back-to-school clothes and supplies
• School trips and activity weeks
• Kids' sports, music or clubs (termly fees)
• Childcare deposits or holiday camps
• Pet insurance, vet bills and annual jabs

Health (4)

• Dental check-ups, hygienist and planned treatment
• Glasses, contacts or hearing aids
• Health insurance excess / deductible (e.g. Dutch eigen risico)
• Therapy, prescriptions or medical devices not covered monthly

Travel (4)

• Main summer (or winter) holiday
• Weekend trips and city breaks
• Travel home to see family
• Travel insurance renewal

Celebrations and gifts (5)

• December / holiday gifts
• Birthday gifts through the year
• Wedding and baby gifts
• Anniversary or Valentine's
• Hosting costs (food, decorations) for holidays you throw

Tech and gear (4)

• Phone replacement (spread over 24-36 months if you buy outright)
• Laptop or tablet
• Camera, hobby or sports gear
• Game console / major hobby upgrade

Life admin (4)

• Passport, visa or residence-document renewals
• Professional licence or exam fees
• Moving costs (deposit, van, first month overlap)
• Tax bill buffer (if you owe a lump sum once a year)

That's 42 categories: more than enough to choose from. Most people only need a handful at once.

Where to keep the money

Because sinking funds sit for months, cash in a drawer is usually the wrong home for them. Prefer:

• Named savings pots or sub-accounts at your bank. Many European banks let you label pots ("Car insurance", "Holiday"). Transfer the monthly amount on payday.
• One sinking-funds account + a paper tracker. If your bank only offers one extra savings account, keep the total there and track each fund's balance on a sinking-funds overview sheet. The money is pooled; the paper tells you how much belongs to each purpose.
• Cash only for short, small funds you will spend within a month or two (for example a birthday next month). Large annual bills should stay in the bank.

Earn a little interest if your savings account pays it, but don't chase yield with money you need in three months: accessibility matters more than rate for sinking funds.

How sinking funds fit next to cash envelopes

Cash envelopes handle this month's flexible spending: groceries, eating out, personal cash. Sinking funds handle future known costs. On payday the order that usually works is:

1. Pay fixed bills (or confirm the direct debits will clear)
2. Transfer this month's sinking-fund contributions
3. Transfer any long-term savings or debt extras
4. Fill the cash envelopes with what's left for flexible categories

If you skip step 2, the holiday and the insurance bill still arrive. They just smash into step 4 later. For a full walkthrough of envelopes, categories and a worked monthly budget, see our cash envelope system for beginners. If you like a weekly cash routine, our cash stuffing guide explains how to move leftover cash into sinking funds.

Common sinking-fund mistakes

• Opening twenty funds on day one. You'll underfund all of them. Start with three to five.
• Dividing by 12 when you only have four months left. Always divide by the months you actually have.
• Forgetting money you already saved. Subtract the balance first, then divide the remainder.
• Treating a sinking fund like an emergency fund. Raiding the holiday pot for a true emergency is sometimes necessary, but then rebuild it on purpose, and keep a separate emergency buffer so this doesn't become the default.
• No review. Once a quarter, check whether targets still match real prices. Insurance and flights move.
• Vague names. "Misc" and "Stuff" invite spending. "December gifts 2026" does not.

If you like seeing the envelope log on paper first, peek at the free filled-in Cash Envelope Tracker example, then the sinking-fund pages in the bundle use the same calm sage layout.

General information only, not financial advice. Example figures are for illustration. Related reading: filled-in Cash Envelope Tracker (free) · zero-based budgeting · cash envelope system · cash stuffing · pay yourself first · 100 envelope challenge · 52-week money challenge · debt snowball · no-spend challenge · monthly budget review · Cash Budget Bundle on Etsy