It has always been necessary to declare and pay tax on any and all income generated by rental of Mexican properties.
No news there!
What is new is that the Mexican tax Authorities are taking an aggressive stance in tax collection and are requiring all technological platforms such as VRBO, AirBnB, etc. to to withhold and pay tax from income generated.
This new law is slated to take effect on June 1st 2020.
Due to the slowdown from COVID-19, regulations and procedure have not been published and this may delay things a bit.
It is coming, however, so be prepared… watch this space for updates!