Probably too late for 2018 filing, but for the future:We started using Account Ability from IDMS Inc in 2005, because we had 4 systems that we needed to pull data from (due to conversion), in addition to some manual entries. We are still using it this year; we still have multiple sources, but due to expansion instead of conversion. IDMS sells forms, or you can print on plain paper. Data can be imported, multiple filing entities are supported, the same software can be used for 1099 and W-2 (though we have used only 1099-MISC and 1099-INT). They also have an option to purchase an add-on for ACA reporting. Last year we filed almost 8,000 1099 forms across multiple companies in multiple states.