This is the current rules, which will likely change come December (I'm not an accountant nor a lawyer):
- Tax residency in Argentina is determined by physical residency, i.e if you're in Argentina living here, you're a tax resident when you move back as a permanent resident (or after 12 months of precarious residency as a non-DNI holder)
- You can bill up to $22,848.40 USD a year as a monotributista at the current exchange rate/limit for Category H; if you exceed this amount, you must become an Autónomo, and collect VAT (21%)
- In either scenario, you can keep up to $12,000 USD in dollars, but they must be deposited in to your Argentine dollar denominated savings account within 5 days of billing your company and issuing the "E" invoice
- Anything over $12K USD will be pesified at the official BCRA exchange rate
This is how you do things by the book. Do people do this? Absolutely not, most remote workers work en negro, and launder some of their money, i.e. just what they spend that AFIP can track such as invoices/debit card/credit card purchases. It's illegal, but like the dollar blue, everyone knows it happens, but the UIF can make life hell for you if you don't and get caught. As to how you do this, you'll need to figure that out on your own, but there's lots of guides on line for remote working from Argentina en negro.