Why is it not allowing me to enter my self employed business expenses?

[Vanessa A]

Which version of TurboTax are you using?  Online or Desktop?

In general, you are asked for the expenses after entering the income. 
 

To get there you will select the following:

1. Business income and expenses
2. I'll choose what I work on
3. Start or update next to Business income and Expenses
4. Edit next to your business profile
5. Start next to Business Expenses