Hoy por ti, mañana por mí

[ROBINDESBOIS]

English?

[spacemaker]

Today for you, tomorrow for me.

[Rusty]

Look here (http://www.tomisimo.org/idioms/es/hoy-por-ti-manana-por-mi-949.html).

[Jorjor]

Today was for you, tomorrow's for me.

[JPablo]

Rusty's English idiom should work.
I also found, Tit for tat, albeit this is in its negative "injury" idea, as an alteration of earlier tip for tap, from tip (blow) + for + tap: an equivalent given in return (as for an injury) : retaliation in kind. Like "ojo por ojo, y diente por diente" (La ley del Talión ?)
Also more positive (like your original question) What goes around, comes around.

[LibraryLady]

Rusty's English idiom should work.
I also found, Tit for that, albeit this is in its negative "injury" idea, as an alteration of earlier tip for tap, from tip (blow) + for + tap: an equivalent given in return (as for an injury) : retaliation in kind. Like "ojo por ojo, y diente por diente" (La ley del Talión ?)
Also more positive (like your original question) What goes around, comes around.

JPablo, I agree with you explanation of the phrase but I've always heard it as "tit for tat" not "tit for that."

[JPablo]

JPablo, I agree with you explanation of the phrase but I've always heard it as "tit for tat" not "tit for that."

You are absolutely right... :footinmouth: my lapsus. I fixed/edited my previous entry. Yes, it is "tit for tat".

[CrOtALiTo]

Today for you, tomorrow for me.

It's the literal translation, I guess that it easy.:)