Sub to payments.

[Andrew Smoot]

Hi bigger pockets! I’m learning a lot about subject to purchases but some of the details are lost on me. Can someone explain to me how payments are made on the debt after the transaction takes place. Does the buyer pay the mortgage servicing company directly? Does the buyer pay the seller who then services the debt? In either case, how can the buyer and seller ensure the other will follow through with their payments and what legal grounds does either party have in the case of default? 

Thanks for the help! 

-Andrew S.