How do i change where a customers invoice is put say i put it in construction costs and it should be in construction income ???

Hi there, 

I know how important to make sure your invoices are hitting the right income account. QuickBooks Online makes it simple for you to assign a default account for certain products or services so that you can control which income account it hits. 

If you'd like your invoice to be put in a specific "construction-related" income account, you'll have to assign this particular account as the default for your products or services. 

To do this, follow these steps: 

1. Click Sales on the left navigation menu. 

2. Select Products and Services. 

3. Select Edit next to your product/service from the list.

4. Select an Income account. 

5. Click Save. 

This will ensure that all income for this particular product will be put in this account. 

I hope this helps to answer your question. If you're in need of any additional assistance, or if I've missed the mark in interpreting your question, please reach out to our tech support team. 

Have a great day.