How to Budget for Irregular Expenses

Woman with a calculator and computer creating a budget for irregular expenses
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If you stick to your budget each month, but still seem to run out of money before the month is over, irregular expenses could be to blame. Irregular expenses are those bills that you only pay once a quarter, once a year or on an as-needed basis. Because you seldom think about them it makes them easy to forget about until they’re due (and you have to scramble to come up with the cash to pay them).

Fortunately, taking the surprise out of irregular expenses is fairly simple. You just have to identify your irregular expenses, total their cost and divide that total by 12 to turn them into a single monthly bill that you can include in your budget.

Ready to give your budget the update that it needs? Let’s take a closer look at how to incorporate those irregular expenses into your monthly budget.

Identify Your Irregular Expenses

Irregular expenses include any bill that is infrequent, but easy to predict. That means insurance bills that you pay annually or twice-annually. It also means things like vet bills, magazine subscriptions, haircuts and vehicle registrations.

Take some time to think about all of your expenses over the course of a year, and make a list of every irregular expense that you can think of.

Figure out How Much It’ll Cost

Now that you have your list assign a cost to each item. In some cases (as with insurance), this will be as simple as looking up the premium. In other cases (as with home maintenance and gift spending), you’ll have to estimate a cost or set a budget for yourself.

Not sure what cost to assign to something? Look over last year’s bank records to determine how much you spent. Then, consider adding 10% to that total as a buffer.

Total It

Now, grab a calculator; add up the cost of all of your irregular expenses (be sure to double check your math), and divide that number by 12. The resulting figure is how much you’ll need to set aside each month to cover all of your irregular bills for a year. Include that expense as a line item in your monthly budget, and treat it just like any other bill that you have to pay. You might even set a due date to remind yourself to pay it.

Where to Put the Money

To ensure that the money is there when you need it, set up a separate savings account for your irregular expenses. Then, move the money over to that account each month. If you think you’ll be tempted to dip into the account for other things, consider opening an account at another bank, so it’ll be harder to get at. Online banks work well for this, as do local banks with limited banking hours and inconvenient branch locations.​

Pay Your Bills

As your irregular bills come due, simply pay them from your new account, and enjoy having one less source of stress in your life.

Final Considerations

  • It’ll take a few months to build up the balance in your irregular expenses account, so if you have any big bills coming up soon, be sure to set aside extra money to cover them
  • Bills change over time, so review your irregular expenses once a year, and make any necessary changes to your totals