I'm trying to submit my first CIS return via Quickbooks and it keeps rejecting. I've checked all details input and can't find anything wrong.

I want to ensure you're able to submit your CIS return directly from QuickBooks, jfrenchrenovatio.

HRMC might reject your CIS return due to any of the following:

• You have used the wrong login credentials. To verify it is correct, sign in to the HMRC website.
• Ensure you're using the right 10-digit Unique Taxpayer Reference (UTR) number.
• Double-check that you're using the correct PAYE Reference number.
• Check that your supplier have the correct PAYE Reference number. 
• Remove any special characters and additional spaces in the subcontractor/contractor name field. Only use letters A-Z and numbers 0-9.
   

If issue persists, Let's start by submitting your CIS in a private window. It's the greatest location to figure out why you can't send CIS. To open one, use the following keyboard shortcuts:

•  Google Chrome: Ctrl + Shift + N
•  Mozilla Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + P
• Safari: Command + Shift + N

Also, you'll want to clear the cache and make sure you're using a supported and up-to-date browser. This can fix any browser-related issues.

You can refer to this article to see important information about your CIS returns: Filing CIS in QuickBooks Online.
 

Please keep us posted on how it goes. It's our priority to ensure you're able to file your CIS return. Keep safe always!