I have just received a letter from HMRC about going over the VAT limit. I have checked and on a rolling basis it looks to be true. This happend back in 2016. This could be a hefty bill? I run most of my sales online and around 25% of them are to outside the EU. This would take me under the limit. I'm very confused about the information here. HMRC states "to check if you have gone over the threshold add together total value of UK sales that are not VAT exempt. It goes on to say Exclude goods or services you supply outside the UK. I'm going mad about this. The potential bill might end my business. Any clarity would help.