"Long-term" is a word that's not used very much in Argentina. However...Sorry if this has been answered somewhere (as I have tried to have a look!). I have USD in a US bank account and GBP in an account in the UK. I've been here a few weeks as a tourist but am now planning to stay longer, working remotely for a UK company and getting paid GBP into my UK account.
So far, I've just been transferring money to pick up the pesos at WU. As things stand at the moment, is this also the best option long-term to get the most for my USD or GBP?
Thank you in advance for any help and steering me in the right direction! I appreciate any advice.
Right now, transferring money using WU (<2% commission, like Steve, or commission free with promo code) will get you the most. But that could change at any time. At the moment (today), the difference between the WU transfer rate (commission free) and selling dollars in the street (depending on how much you can get) is only 3.5 - 4.5 pesos per dollar (~2%), but just a couple days ago, the difference was 8 pesos, and a couple weeks ago, the difference got up to 16 pesos (~8%!!!).
If you can, bring lots of US 100 dollar bills, in new, unwrinkled, unfolded, perfect condition, to sell in cuevas if and when "the blue" starts to pay more than WU. Don't bring older bills with Franklin's head smaller. If possible, only bring the newest bills with the blue security thread. This is what the cuevas and everyone else here wants. You may receive significantly less for bills that don't meet these characteristics. You'll also receive significantly less for other denominations and for other currencies (GB pound, Euro, etc.).
If the blue starts to trade significantly higher than the WU rate (or if suddenly there's no way to do a transfer without paying Western Union a significant commission), you'll be glad that you've got cash.