I use QBO and i have made a payment to HMRC for self assessment tax. How do i categorise this correctly? Or do i just exclude it?

Hello Mon-Gella, 

Welcome to the Community page, 

This is more of an accountancy question, and we are not trained accountants just technical support, so you will need to speak to a trained and qualified accountant on what best to do with this payment and they will be able to advise and guide you with it.