Entity-level returns
Form 1065 for partnerships and multi-member PLLCs. Form 1120 for C-corporations and Form 1120-S for S-corp elections. Form 1040 Schedule C for solo PLLCs taxed as disregarded entities. All federal, NYS, and NYC filings on schedule, with K-1s to partners or 1099s to contractors as applicable.
For NYC-based firms, this includes the Unincorporated Business Tax (UBT) or General Corporation Tax (GCT) as appropriate, plus Commercial Rent Tax where triggered.