How do I file my tipouts as a Bartender?

I am a server/bartender at Red Robin, and we are required to claim 100% of the tips we receive from guests as part of our income.

However, we are also required to give a percentage of the tips we receive to our support staff (IE. Busser, Food Expo, bartender), which has not been reflected on my tax forms.

I have records of how much I've paid out and to who, over the 2016 tax period.

I only took home about 88% of the tips I was required to claim.

So my question is: How do I make sure I am not paying taxes on that other 12% of tips I was required to claim as income?