When we input a new supplier expense or paid invoice it appears to be carrying forward last quarters expenses when it comes to paying vat. ruining our vat return

Hello marcus1212,

Transactions from the prior quarter will only affect your current VAT return if you make some changes. You'll be able to see the adjustment through the Exception Amount column when preparing the return.

Here's how you can view the return:

1. On the left navigation bar, click Taxes.
2. Go to the VAT tab, then search for the VAT return.
3. Hit the Prepare return option.

Please refer to the sample screenshot I'm attaching below:

For future reference into VAT, such as the exceptions amounts, I'm attaching the article I recommend on this:

VAT exceptions and reports.

If what happens to you doesn't relate to the exception amounts, I recommend reaching out to our QuickBooks Support. They'll be able to check your account and assist you further with the issue going on with your taxes.

Here's how you can reach them:

1. Log into your QuickBooks account, and click the Help option in the upper-right corner.
2. Select the Contact us hyperlink.
3. Enter necessary info, then hit Let's talk.

I'll keep an eye out on your response with regards to the VAT calculation in QBO. Wishing you all the best.