What should I do if when I go into the customer tab to input costs it won't let me?

Hey there, cottonlaw2016cal.

Right now adding cost to your customers isn't possible. You can only input a cost when you set up your inventory items, billable expenses, and when services are purchased or provided by vendors.

If you're trying to enter a cost to your items, here's how:

1. On your Product and Services tab, look for the specific item and click on Edit.
2. Scroll down and you'll see the Cost field at the bottom. Input the cost there.
3. Hit Save and close.

You can learn more about tracking and managing your inventories in the following articles below:

• Set up and track your inventory in QuickBooks Online
• Add product and service items to QuickBooks Online

Also, these resources are good references in modifying customer's profiles:

• Edit customer information
• Set up and apply automatic late fees to invoices

If you're referring to something else, please let me know. I'm always here to help and provide additional assistance. Keep safe and have a good one.