If you think that's bad, try being self-employed with an S-Corp as a means to handle the legality of the business. Now the state "requires" that all businesses efile their monthly and annual paperwork and deposits using their system (WAMS) no matter how big or small you are. It would be fine if it were like the SSA's Business Services Online site, or even the IRS's EFTPS site. The WI site is full of dead-ends that dump you out becuase you cannot use the back-key function and there is no way to return to the last page you were on. It is extremely cumbersome to work with. Also, WI "allows" a business to transfer its SSA's W-2 file for state filing, saved in PDF, into their system as a way of avoiding submitting it by paper. Would work fine IF the darn system actually accepted the Social Security's file like it said it would. It rejected mine becuase my file "exceeded the allowable number of errors". How can that be when it was a file genererated by the Social Security Admin using their tight format? If its supposed to take the SSA file, it should be patterned after the SSA format. Evidently, WI has its own ideas of what the SSA should accept. Talk about the tail wagging the dog.
I guess the real question is why is Wisconsin's efile system for both businesses and individuals so inflexible. Its as if you have to be a programmer to understand what it wants. I don't have that kind of time or patience. Its forcing small businesses to spend money on professional tax preparers just to submit their regular data. WI should send their programmers to see the IRS and SSA IT people so they can learn how to program.