New one for me. DC resident renting out 3/4 of home. This is reported on both 1040 and D-4O DC tax return. I've done D-30 unincorp business returns for MD residents but not for DC residents. If taxpayer has to pay D-30 unincorp business tax to DC and also pay on their resident D-40 isn't this a duplication of tax? Yes, revenue is above $12,000 so not exempt.
ProSeries does not handle D-30/D-40 very well. For the D-30 it's just a glorified typewriter (and I think it might still need to be paper filed).
On the D-40 though, you'll enter the amount of double taxed income in the subtraction section on line 11:
"Income reported and taxed this year on a DC franchise or fiduciary return."
Rick
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