As posted in their log, TaxSlayer has a fix. That is the good news. The bad news is that it must go through thorough testing so that it doesn’t break something else. This will take a few days.

At this time, one can continue to work on the Federal side of returns. Do not attach a State return until this issue is resolved. Keep a list to update the returns when the system is updated. If the return already has a state attached and it is infinitely calculating, one can click on the Federal in the left bar to enter the Federal return.

Personal note after a career in software development: we want them to do the end to end testing. I am not impressed with their past track record regarding this, but it must be thoroughly tested so that it doesn’t break something worse.