It's an interesting idea.The average house in the UK is worth 32.75 million Argentine pesos (at official rate 131 GBP - 1 ARS).
So would that make an annual wealth tax payment (assuming it was your only asset) a simple case of calculating 2.25% of 32.75 million?
i.e. 736k pesos annual bill? Wow.
I am not in Argentina at the moment, I hope to never come back apart from on holiday. However, life is not simple, and for family reasons I could be coming back in the next year. This wealth tax is a real dilemma. I do sympathise with honest taxpayers like Irelander and Alby, who want to do the right thing and do not want the AFIP to one day darken their door with a horrendous bill or worse. But, I would be a non-payer. Why? Because I do not think its enforceable and I think the benefits of non payment far, far, far outweigh the risk of one day getting a bill. Who wants to be paying 10K USD a year in taxes (lets face it most on here are going to have assets north of what I used in my example) that hardly anyone else is bothering to pay? Especially, if it is not really aimed at expats. Apart from Irelander, I can't see any comments on here from anyone who sounds like they are actually paying (yeah I know, what people say on a forum and do in real life are two quite different things....).
I think, at least for me, it is a balance between honesty / compliance with the law / and not worrying about getting caught in the future because one ignored their responsibility to comply. Having said that, it's a tough thing to voluntarily show The Argentine Government all your cards with respect to your assets in your native country. (Quite a different thing if you are Argentine born and hiding what you have acquired outside of the country over the years.)
And I am not exactly sure what is right, just or fair with respect to people who have a presence in two or more countries. Double taxation hurts, particularly if you are just an emerge person in the non Argentine country. (Although from Argentina's point of view, you would be RICH!)
So, I would say if it can possibly be avoided, in whatever manner, it might be morally wrong, but financially just. To dip your hand into someone's foreign pocket, in the name of taxation, WITHOUT REPRESENTATION (I am guessing???) or even with representation??? - Seems like putting too much of a burden on the ExPat. And it's things like this, that discourage people from coming here and propping up the economy with their exterior bank notes of one kind or another (USD EUROS etc.).
If you can avoid it legally. ie staying / visiting the country for just under the maximum yearly time of 6 total months per year - DO IT!
I never encourage cheating or breaking laws, but my best guess is that the network of countries sharing asset information needs to built out a bit more before that net can catch a person. It will eventually come, just not yet!