A fixed bill is a special type of bill that you might get from a company or service provider. This bill is like a promise that you will pay the same amount of money every month for a certain service or product, no matter what.
So let's say you have a fixed bill for your electricity. This means that every month, you will pay the same amount for your electricity bill, regardless of how much electricity you actually use. This can be really helpful because you can budget your money and always know exactly how much you need to pay.
However, there are also some downsides to fixed bills. If you end up using less of the service or product than you are paying for each month, you might be wasting your money. On the other hand, if you end up using more of the service or product than you had planned for, you might end up with a big surprise bill at the end of the month.
Overall, fixed bills can be a good way to budget your money and plan ahead for your expenses, but it's important to make sure you're getting the most out of the service or product that you're paying for.