Forms & documents to file

Revenue Bureau tax forms are year and business entity type specific. For example, a sole proprietor filing for 2011 whould select the SP-2011 form.

All businesses must register online or by mail or fax

Business Entity Type	Revenue Bureau Tax Form (for each year)	Supporting Tax Pages Needed (for each year) IRS forms unless noted
Sole Proprietorship or Single-Member LLC	SP-20XX	Form 1040, page 1 Schedule C (if filed) Schedule D (if filed) Schedule E (if filed) Form 4797 (if filed) Form 6252 (if filed)
Corporation	C-20XX	Form 1120, pages 1-5 Form 1125-E (if filed) Oregon Form 20 Oregon Schedule AP (if filed)
S-Corporation	SC-20XX	Form 1120-S, pages 1-4 Form 4797 (if filed) Form 8825 (if filed) Schedule K-1's
Partnership or Multiple-Member LLC	P-20XX	Form 1065, pages 1-5 Form 4797 (if filed) Form 8825 (if filed) Schedule K-1's
Estates or Trusts	E-20XX	Form 1041 Schedule K-1's

The City of Portland, Oregon