Hello, Nelly.
I'm here to help you decide on what VAT codes to use on your product and carriage.
The 0.0% ECG Code is reflected on boxes 6 and 8 for sales and boxes 2, 4, 7, and 9 or purchases. While the 0.0% Z code is shown on boxes 1 and 6 for sales and boxes 4 and 7 for purchases.
If you haven't come across this article, I recommend reading it for more information about the VAT codes: Common VAT Codes. This can help you decide on which code is correct for your products. Also, HMRC has guidelines regarding the codes, too. Check their VAT articles list for more details.
In addition, we did publish an article regarding the Brexit event. Brexit FAQ. Check it out if you want to get the details on the changes in QuickBooks Online after Brexit.
Ready to record your sales transactions or need to take care of other stuff in QuickBooks Online? Check out the program's topic list for articles and guides about the processes.
I've got you covered if you have concerns regarding your products or transactions. If you have questions regarding QuickBooks Online as a whole, add them to your reply. Always here to help.