I'm sharing information about adding invoices with different trading names using Custom Form styles, @Viraj Abeywickrama.
Before anything else, itdoes not offer the ability to create templates with different company names. However, if you have the Import Style feature within your Custom Form Style,you can add invoices with different trading names.
Here's how:
Go to the Gear icon, andselect Custom Form Style.
Click the New Style drop-down arrow and choose Import style.
Choose the template type and click Next.
Underthe First time importing an Invoice style, click the Learn how to set up your DOCX file Download import guide link.
Open the downloaded template and modify the information if needed.
Save the template where you can easily find it, then go back to your QuickBooks account.
Click the Browse button to upload the template.
Select Next, and map the fields. Make sure the columns on the template match in QuickBooks.
Click Next to preview and confirm your style.
Hit Save.
Also, if you have QuickBooks Online Plus or Advanced, you can use the location tracking feature as a workaround. This way, you can easily change company names on your sales transactions.
In the QuickBooks Online section, click Upgrade your plan.
Review the available plans and then select Choose Plan.
Follow the on-screen steps to upgrade your plan.
Make sure that you tick the This location has a different company name when communicating with customers box and input the company name. This will ensure that the company name is reflected on your printed or sent invoices.