For a home office how do i mark lowes and home depot receipts so they proper percentage of deduction can be applied? used to set a rule to apply a percentage but

Hi @needsmorecoffee,

I'll take care of your query about tagging your expenses in QuickBooks Self-Employed (QBSE). 

These should be marked as business expenses so the proper deductions will be applied.

Unless it's a combination of business and personal expense, then follow these steps:

1. Choose Split from the Type column.
2. You can decide to split this transaction by Amount or Percentage.

See this article for additional details of the split feature, including screenshots for your reference: Split and Exclude Transactions. 

As for assigning categories, take a look at this article: Categories in QuickBooks Self-Employed. This is a complete list of categories you can use in QBSE.

You also mentioned rules, so I suggest checking this article: Create rules to speed up reviews in QuickBooks Self-Employed. Here you can find steps on how to create rules in a browser, as well as within a mobile device. 

Feel free to post a comment below, in case you have other questions in mind. I'll get back to you.