Kenneth MacArthur

I understand that, but why can't you add support for populating SA109 to the self-assessment facility on the HMRC website? The answer is presumably that you could indeed add such support, but it is not a priority for you to do so (even many years after the self-assessment facility on the HMRC website launched). The question is: why is it not a priority?

Why, in 2024, can non-residents still not submit their tax return like everyone else through the website? What bits of information do non-residents have to provide that are so unique that they can't be captured by a web form?