A couple of quick questions about VAT MOSS calculation

LupoSol

Hi guys and gals,

I'm filing my VAT MOSS return for Q1 2021, being a British company fully registered with ROS and now dealing with my first post-Brexit VAT MOSS return.

I have a quick question for you, please.

I can see that the ROS portal calculates the VAT Amount automatically each time you enter the Member State, Txable Amount and VAT Rate.

When I used to do it with HMRC UK the "VAT Amount" field was editable, so I could correct the difference of a small cents and align the tax return with the calculations that Quickbooks online does for me. Now, with ROS, I cannot do this any longer.

In your opinion, would this be a problem (in this quarter the difference is only three cents) or shall I just proceed to declare what ROS calculates for me?

Also, ALL of my sales are in GBP, but I need to declare everything in EURO instead.

Is there an official exchange recognised by Revenue that I should use to make the conversion?

Many thanks for your kind support.