Can you multiple tag and split an invoice or an expense

You can only assign one tag on an invoice or expense, jackie.

I recommend using classes since you need to group income and expenses for things like job costing. You can also use classes to track specific line items.

Let me guide you through the steps on how to set it up.

1. Go to Settings ⚙, then select Account and Settings.
2. Select Advanced, then select the Categories section to edit.
3. Check Track classes.
4. Check Warn me when a transaction isn't assigned a class. This is optional, but it's good to turn on, so when you look at reports, you know everything got classified.
5. Under Assign classes, choose One to each row in transaction.
6. Click Save, then Done.

Once your settings are in order, you can create a class list. 

After you set up your classes, you can start to organise your customer and supplier transactions by class. Then, run reports to check sales, expenses, or profitability by business segment.

Check out these links as your guide through the process:

• Learn how to assign classes to transactions in QuickBooks Online
• Learn how to run reports by class in QuickBooks Online.

Also, I'm adding these articles as well in case you need more details about tags.

• Find out how tags and groups can give you better insights from QuickBooks Online
• Tag transactions in QuickBooks Online.

Stay in touch with me if there's anything else you need about using multiple tags on your transactions. I'm always around to provide the information that you need.