I haven't done taxes yet but only because I'm pissed off as I'm going to owe a decent chunk
I always file Single with 0 to make sure I never owe money and usually get money back. My wife fucked up and put down married with like 3 or 4, basically put it down in a way that registered as me not working so she got my tax allowance too.
So when I preliminarily put it in, we owed a couple of thousand at least and I just haven't had the mental strength to run through all the tax allowances to bring it down (I sell on eBay so there's definitely ways I can reduce it)