I have tried submitting my 1099-NEC several times, and keeps getting rejected by IRS saying that information doesn't match what is on file. Any ideas?

I appreciate you for bringing this to our attention.

Your 1099-NEC being rejected by the IRS can either because by your Company's name, Employer Identification Number (EIN), and Social Security Number (SSN) not matching what's on record, or, one or more of your contractors has an incorrect address.

Also, since you mentioned that you've received a new EIN, I'd recommend making sure that it's being reflected within QuickBooks Online too.

However, if you've already compiled and are still being rejected, I'd suggest contacting our Payroll Support so they can look into this further using their tools. 

Here's how: 

1.  Sign in to your QuickBooks Online company.
2. Go to Help (?) and select Contact Us.
3. Enter your concern, then select Let's talk.
4. Choose a way to connect with us:

• Start a chat with a support expert.
• Get a callback from the next available expert.
• Ask the community to get help from businesses like yours.

If you're ready to re-submit the form check out this reference Create and file 1099s with QuickBooks Online.

Additionally, in case you need to print your 1099, feel free to this article as your reference: Print your 1099 and 1096 forms.

If you have any further concerns about your 1099s in QuickBooks Online, please don't hesitate to share them here in the Community. Stay safe!