Whether, stocks, currencies, real estate, commodities, etc., if you see it on a graph you will notice a lot of peaks and valleys in the trend.The peaks and valleys are human nature at work.  

Here in Canada, the Currency Act describes legal tender:8. (1) Subject to this section, a tender of payment of money is a legal tender if it is made(a) in coins that are current under section 7; and(b) in notes issued by the Bank of Canada pursuant to the Bank of Canada Act intended for circulation in Canada.Marginal note:Limitation(2) A payment in coins referred to in subsection (1) is a legal tender for no more than the following amounts for the following denominations of coins:(a) forty dollars if the denomination is two dollars or greater but does not exceed ten dollars;(b) twenty-five dollars if the denomination is one dollar;(c) ten dollars if the denomination is ten cents or greater but less than one dollar;(d) five dollars if the denomination is five cents; and(e) twenty-five cents if the denomination is one cent.It would also appear that under the current interpretation of the Act, the method of payment (e.g. cash, debit or credit card) used in a transaction is a private agreement between the buyer and the seller.

You are basically saying the lawful currency of the United States is NOT acceptable to pay the debt your tenant owes.

Any talk of the US dollar loosing its status as world currency of last resort is just absurd.  

However, Comptroller of Currency, FDIC, FTC and other regulatory agencies have rulings amending lending activities by consumer and commercial lenders to Reg Z.So far, the individual HML is still out of the woods, they aren't under most of the banking regulators' cross hairs, technically. 

For ex. if you want a property that generates rental of 1500 or 2000$ rentals monthly, then its better to have atleast a million dollar in your pocket. 

However, absent any economic shock, we can sustain the economic fundamentals because all economic actors are operating on borrowed money.In a simple way, you can think of it like a ponzi scheme, but that is the nature of a debt-centric economy with fiat currency.

I can't change the currency, so it's in $ but meant to be Pesos.

You should also check local laws to ensure you are permitted to accept such a prepayment (here we are not) and whether you need to track and pay interest on the prepayment portion.All those wet-blanket warnings aside, we have had the situation arise with international students whose parents wanted to pre-pay the rent for the year so they only had to convert currency once.  

They are known as Limit systems.A bank will limit their exposure to many different types of risk - currency risk, counterparty risk, interest rate risk etc by automatically disallowing any trade that would put the bank over the limit in any one of these categories There are netting strategy that offset long vs short positions which would boost the number of transactions they can do.The type of risk being talked about here is counterparty risk which is designed to limit the banks exposure if an entity they are dealing with goes under.