TO BE GOING TO. FUTURE PLANS.

One way of talking about the future is using TO BE GOING TO, it is not a verbal tense. Sometimes it can be seen as: "VOY A " in Spanish. Eg. I'm going to read: Voy a leer. 

FORM OF TO BE GOING TO : 

TO BE GOING TO (VOY A...) FORMA Y TRUCOS

As the picture shows, the verb to be is used as an auxiliary verb, and it concords with the subject.