Commission or bonus on Upsell/Cross-sell, if at all?

I'm curious how other companies compensate their CS teams for cross-sell/upsell opportunities, if at all? We're trying to figure out the timeline after a Sales to CS handoff when CS would get credit for the cross-sell/upsell. Should they be commissioned on that amount or part of bonus metrics? At present, CS is responsible for renewals.

I'm looking for any input.