Let me help you with paying your invoice and VAT in QuickBooks Online.
If the invoice shows that the product you bought is taxable, then select Exclusive of Tax. Thus, you should only pay $1000.
Otherwise, select Inclusive of Tax if the supplier sent you an Ex-VAT invoice. This way, the tax amount will be added to your invoice. Thus, you'll pay $1200.
Please see the attached screenshot for your guidance.
I've added these articles for additional information:
Hello Sp Developments, As long as a VAT code and status(inclusive/exclusive it should allow you to save the transaction).Can we ask you to try clearing the cache and cookies on your browser? Do you then get the same message when you sign back in after doing that and create an invoice with a VAT code?
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