Let me get the help you need in connecting your QuickBooks account to HMRC.
If you’d want QuickBooks to interact with HMRC so you can submit your VAT return for MTD, then you’ll need first to allow QuickBooks to connect to HMRC for MTD.
To enable MTD in QuickBooks, here's what you'll need to do:
Click Taxes in the left navigation menu.
Click on Let's go button at the upper right hand.
Once done, to authorise QuickBooks to interact with HMRC, follow these steps:
Click Continue to sign in.
Enter your HMRC credentials to sign in.
Click on Grant authority to continue.
Once the authorisation has been given, you will receive a 'You're connected to HMRC message as below, then click Continue.
When the process has been completed, click on Take a look.
That's it! Once you're able to complete this process, you can now submit VAT return for MTD through QuickBooks.