When money feels tight, it helps to know which costs you can change this month and which you cannot.
Direct answer
Fixed expenses stay the same each month, like rent or a loan payment. Variable expenses change with your choices or usage, like groceries, fuel and entertainment. In a budget, you plan fixed costs first because they are certain, then set limits on variable ones.
Examples
| Fixed | Variable |
|---|---|
| Rent or mortgage | Groceries |
| Loan or car repayment | Fuel or transport |
| Insurance premiums | Electricity, water, gas |
| Phone plan with a set price | Eating out and takeaways |
| Subscriptions | Clothes and shopping |
Some costs sit in between. A phone contract might be fixed, while data overage charges are variable.
Why it matters
- Fixed costs set your floor. They are what you must cover before anything else.
- Variable costs are your lever. If you need to cut quickly, start here.
- Forecasting is easier. You can predict fixed costs exactly and estimate variable ones from past months.
How to use this in a budget
List your fixed expenses and total them. Subtract from take-home pay. Divide what remains among variable spending and savings. If fixed costs take most of your income, the long-term fix is to reduce them, for example by changing housing or renegotiating bills.
Where Teyro fits
Teyro's Budgeting for Beginners course turns this into short lessons you can play in a few minutes a day. It has 50 lessons, and you can start free.
The bottom line
Know your fixed costs exactly, put limits on variable ones and save before you spend.
This is general education, not personal financial advice.
