I have absolutely nothing to back me on this other than gut instinct that the 20% is the base because that's what the IRS assumes for NYC metro area tippable wa

I have absolutely nothing to back me on this other than gut instinct that the 20% is the base because that's what the IRS assumes for NYC metro area tippable wages. In reality the TLC probably organized a committee of accountants and medallion holders and spent a year discussing what the three options would be.