Published May 30, 2026 · Updated September 23, 2026 · 9 min read
Sinking funds can help you prepare for irregular expenses such as car repairs, holiday spending, insurance bills, and home maintenance by setting aside money for them over time. In this guide, we’ll explain how sinking funds work, how they differ from emergency savings, and how to set one up.
Quick Answer
A sinking fund is money you save little by little for a specific planned expense, such as car repairs, holidays, annual bills, or home maintenance. Unlike an emergency fund, which is meant for unexpected expenses, a sinking fund helps you prepare for costs you know are coming.
What Is a Sinking Fund?
A sinking fund is money you set aside gradually for a specific expense you expect in the future. Instead of trying to cover the entire cost when it arrives, you save smaller amounts over time so that some or all of the money is available when you need it.
Think of it like filling a bucket one cup at a time. 🪣 Each contribution adds to the amount you’ve set aside, so when the expense arrives, you may have more of the money available to cover it.
The key difference from general savings is that a sinking fund is set aside for a specific purpose or planned expense. You may also set a target amount or deadline based on how much you expect to need and when you expect to need it.
Sinking Fund vs. Emergency Fund: What’s the Difference?
Sinking funds and emergency funds are both forms of savings, but they are designed for different types of expenses:
| Sinking Fund | Emergency Fund | |
|---|---|---|
| What it’s for | Expected or planned expenses | Unexpected expenses or financial emergencies |
| Examples | Holidays, car maintenance, vacation | Job loss, medical emergency, urgent repair |
| Type of expense | Expected or planned | Unexpected |
In short: a sinking fund is designed for expected or planned expenses, while an emergency fund is intended for unexpected expenses or financial emergencies. The two can serve different purposes within your overall savings plan. If you’re still building your safety net, our guide on how much emergency fund you should actually have walks you through it.
Common Things People Save for With Sinking Funds
Sinking funds can be used for a variety of expected or planned expenses. Here are a few common examples:
| Sinking Fund | Why It Helps |
|---|---|
| Holidays & gifts | Helps spread holiday and gift expenses across several months |
| Car maintenance | Helps you prepare for expected costs such as tires, brakes, and oil changes |
| Annual insurance | Helps you save gradually for an annual insurance premium |
| Vacation | Helps you save gradually for planned travel expenses |
| Home repairs | Helps you prepare for expected home maintenance and repair costs |
| Back-to-school | Helps you prepare for school supplies, clothing, and other back-to-school expenses |
How a Sinking Fund Works: A Simple Example
Let’s say you want to save $600 for holiday gifts and have six months to reach your goal. Instead of trying to set aside the full $600 at once, you can divide the goal by the number of months you have to save.
$600 goal ÷ 6 months = $100 per month
By setting aside $100 per month for six months, you could reach the $600 goal by the end of the savings period. Breaking a larger planned expense into smaller monthly amounts can make it easier to include the goal in your regular budget.
Here’s another example. Sarah expects to replace her car’s tires within the next year and estimates the cost at $800. If she wants to have the money set aside in 10 months, she can divide the estimated cost by her savings timeline:
$800 goal ÷ 10 months = $80 per month
By setting aside $80 per month for 10 months, Sarah could reach her $800 savings goal. Having money set aside for the expected expense may reduce the amount she would otherwise need to cover from her regular monthly budget or other sources.
To estimate how much to save each month for a sinking fund, divide your savings goal by the number of months you have to reach it. Our Savings Goal Calculator can help you estimate the monthly amount and track your savings timeline.
Why Sinking Funds Work So Well
Sinking funds can make expected expenses easier to plan for by breaking a larger future cost into smaller savings amounts over time. Having money set aside for a specific purpose may also reduce the pressure on your regular monthly budget when the expense arrives.
Some expenses may feel unexpected even though they occur periodically or can reasonably be anticipated. Car maintenance, holiday spending, annual premiums, and other recurring costs are common examples. A sinking fund allows you to prepare for these expenses gradually by including smaller savings amounts in your budget over time.
How to Set Up Your Sinking Funds in 4 Steps
- List your expected or planned expenses. Think through the year and consider expenses such as holidays, insurance premiums, car maintenance, birthdays, and travel.
- Set a target amount and timeline for each. Estimate how much you expect to need and when you expect to need the money.
- Divide to find your monthly savings amount. Divide your target amount by the number of months you have to save to estimate how much to set aside each month.
- Consider automating your savings. If it works for your budget, you can set up automatic transfers to help you contribute to your sinking fund consistently.
Once you know how much you plan to contribute to your sinking funds each month, include those amounts in your overall budget. Our Monthly Budget Calculator can help you see how your planned savings fit alongside your other income and expenses. You can also explore the 50/30/20 budget rule as one framework for organizing your spending and savings.
Where Should You Keep Your Sinking Funds?
There are several ways to organize sinking funds. Here are two common options:
- Separate savings accounts. Some banks and credit unions allow you to create multiple savings accounts or labeled savings “buckets” for different goals, such as holidays or car maintenance. This can make it easier to keep track of how much you’ve saved for each purpose.
- One savings account with a tracker. Another option is to use a single savings account and keep track of the amount assigned to each sinking fund in a note, spreadsheet, or budgeting tool.
Keeping sinking funds separate from the money you use for everyday expenses can make it easier to track your progress and avoid accidentally spending money you’ve set aside for a specific purpose.
Common Sinking Fund Mistakes to Avoid
- Starting too late. The more time you have to save for a planned expense, the smaller your required monthly savings amount may be. Starting earlier can make the goal easier to fit into your budget.
- Treating a sinking fund like an emergency fund. Sinking funds are intended for expected or planned expenses, while emergency funds are generally reserved for unexpected expenses or financial emergencies. Keeping track of them separately can help you preserve the purpose of each.
- Forgetting to replenish recurring sinking funds. After using money from a sinking fund for a recurring expense, consider restarting your contributions so you can begin preparing for the next time the expense occurs.
- Trying to fund too many goals at once. If your budget cannot comfortably support several sinking funds at the same time, consider prioritizing the expenses that are most important or coming up soonest, then add other savings goals as your budget allows.
Frequently Asked Questions
Is a sinking fund the same as just saving money?
Not exactly. A sinking fund is money set aside for a specific expected or planned expense. General savings may be more flexible or open-ended, while a sinking fund is designated for a particular purpose.
How many sinking funds should I have?
There is no set number. Consider starting with the expected expenses that are most important or coming up soonest, then add other sinking funds as your budget allows.
Should I have a sinking fund and an emergency fund?
They serve different purposes. Sinking funds are designed for expected or planned expenses, while emergency funds are generally intended for unexpected expenses or financial emergencies. Depending on your circumstances, both can play different roles in your overall savings plan.
Where should I keep a sinking fund?
You can use a separate savings account, a labeled savings “bucket,” or another method that helps you keep track of money set aside for a specific purpose. The right approach depends on how you prefer to organize and manage your savings.
Can I have too many sinking funds?
There is no set limit, but managing several sinking funds at once may become difficult depending on your budget and savings goals. Consider prioritizing the expenses that are most important or coming up soonest, then add other sinking funds as your budget allows.
The Bottom Line
Sinking funds can help you prepare for expected or planned expenses by setting aside smaller amounts over time. Whether you’re saving for holiday spending, an insurance premium, car maintenance, or another future cost, building the fund gradually can make the expense easier to include in your overall budget.
If you’re ready to create a sinking fund, choose an expected or planned expense and estimate how much you want to save and when you expect to need the money. Our free Savings Goal Calculator can help you estimate how much to save each month based on your goal and timeline.
Related Resources
Calculators:
Articles:
- How Much Emergency Fund Should You Actually Have?
- The 50/30/20 Budget Rule Explained
- Emergency Fund vs. Paying Off Debt: Which Should Come First?
Sources & References
The following Consumer Financial Protection Bureau resources were reviewed for information about savings goals, planning for expected expenses, and building emergency savings.
- Consumer Financial Protection Bureau — Savings Plan Tool
- Consumer Financial Protection Bureau — An Essential Guide to Building an Emergency Fund
About Everyday Money Tools
Everyday Money Tools provides simple, free calculators and easy-to-understand guides to help you manage your money with confidence. From budgeting and saving to paying off debt and understanding your paycheck, our tools and articles are designed to make everyday financial decisions clearer and less stressful.
This article provides general educational information about sinking funds, budgeting, and saving and is not individualized financial, tax, legal, or investment advice. Savings needs, account options, and budgeting approaches can vary based on your circumstances. Information was reviewed September 23, 2026, using consumer financial guidance from the Consumer Financial Protection Bureau.
Victoria Hart is the writer behind Everyday Money Tools. She spent 8 years working for the IRS and 3 years preparing people’s taxes, giving her a real look at how money works for everyday families. But her most important lessons came from her own life as a single mom of three. She rebuilt her finances through some genuinely hard seasons, learning how to stretch a tight income, budget carefully, and find her footing again. Today she builds free financial calculators and writes clear, practical money guides to help others do the same.