Actually the amount of HIP that are deductible is limited to the smaller of the Medicare wages or the HIP, so if your HIP were higher than your Medicare wages, then only the smaller amount will get transferred over. The IRS guidance doesn't point out this nuance and even implies the HIP are fully deductible if your HIP are included as part of your box 1 wages, but the worksheet only will pass through the smaller of your HIP or line 5 (Medicare) wages.
