I am an Irish citizen, my partner is Belgian. We have been living together in Ireland for several years.
For work I need to move to the UK in a few months, where I will be employed for about 3 years. I will need to be a resident for tax purposes. Our original plan involved my partner moving to the UK with me, but when we discovered visa costs, we decided she'd go back to Belgium instead and I would visit for a few days each week (covid restrictions allowing).
We do worry about the frequent travel/tax residency/double taxation, etc. As an Irish citizen, I won't need a UK visa, so I'm hoping weekly travel will not be an issue. I also don't plan to register as a resident in Belgium, since I won't stay continuously for very long.
Anyone have experience with this, post-Brexit? Any tips on what to do/avoid would be much appreciated!