I'm not quite sure what has happened.
Based on the second alternative, this should be posted to Box 5 of your W-2.
It will not affect your tax return; however, you want to be sure that it was paid. Please confirm this with your employer.
In this instance, you can file your 2022 tax return.
If I've misunderstood your question, and this does not completely answer it, please contact us again and provide some additional details.
My employer calculated extra medicare and med surtax I had to pay as part of a bonus. It was outside of normal payroll so I wrote my employer a check and they then paid the tax on my behalf. My W2 doesn’t reflect this extra tax I paid, so can I enter somewhere on my return I paid this or do I have to get/wait for a corrected W2?
There is no other way to enter the Medicare tax other than the w-2 or calculated in self-employment.
I'm sorry! I'm giving you more questions than answers, but I don't understand the circumstance.