Fixed vs. variable expenses: what is the difference?
Fixed expenses stay about the same each month, like rent or a car payment. Variable expenses change with what you buy or use, like groceries or gas. Sorting them shows what you can realistically change.
Common examples
| Usually fixed | Usually variable |
|---|---|
| Rent or mortgage | Groceries |
| Car payment | Gas |
| Insurance | Eating out |
| Subscriptions | Clothing |
Some bills fall in between. An electric bill changes through the year, but you can't skip it. Put each one wherever makes the most sense for you, and stay consistent.
Why the split helps
- Fixed costs set your floor. They show the least you need each month before any choices.
- Variable costs are where quick changes happen. You can adjust eating out this week. You can't usually adjust rent this week.
- Fixed costs can still change. Canceling a subscription or shopping for insurance lowers them for months to come.
How to sort yours in 3 steps
- List every regular expense from your last two or three months of statements.
- Mark each one fixed or variable.
- Add up each group, then compare both totals with your monthly income.
Let the app do the math
Add your income and expenses once, and $tacked turns them into a clear monthly picture. Free on iPhone and Android.
Get $tackedQuestions
Is a phone bill fixed or variable?
Usually fixed, if you pay the same amount each month. If it changes a lot, treat it as variable.
Are utilities fixed or variable?
They usually change month to month, so many people call them variable, even though they are necessary.
Related guides
- How to budget with a bi-weekly paycheck
- How to turn weekly, yearly and quarterly bills into a monthly number
- Replacing your budget spreadsheet: what to actually track
- How to see where your money goes each month
This guide is general information, not financial advice. The numbers are examples.