Q. What can we do and where can we get accurate information?
A. You already did the main thing, you contacted your employer.
What you do depends, on your situation, including what state you are in, whether the is box 20 locality is a city, county, school district or something else and whether you are required to file a local income tax return.
Typically, you only file a local income tax return if you live in that locality. If you only work in that city, your employer usually withholds the correct amount of tax and you are done.
Otherwise, you review you pay stub info, particularly the year end statement and try to get a handle on it. You may have to go to a local tax pro.
