Registration requirements and fees
Are there any registration requirements, or any fees/taxes payable?

Argentina
Note that in February 2018, the government of Argentina dissolved the National Lottery (LNSE). As a result, at least for now, Argentina no longer requires sweepstakes and contests to be registered. Prior to the dissolution, only promotions/contests in which the winners were totally or partially determined by chance – involving prizes greater than 6,666 Pesos (approx. US$148) – needed to be registered with LNSE and had to meet all the applicable requirements.
With regard to skill-based contests, they do not require registration. However, the Official Rules must conform to local law. When a prize is awarded to a winner selected by chance a 31% special tax is levied. If the prize is cash, the entity awarding it must withhold and pay for the tax. If the prizes are goods the beneficiary must provide the entity awarding the prize the amount of money requested to pay for the special tax. Specific provincial taxes may apply in different jurisdictions.