There are no links to the official documents for the years 1989 through 1995. The information below can only be used as help for further research, as there is not enough information here to rely on for official guidance. For that you need to obtain a copy of the complete document.

Rev. Rul. 90-70
Credit for producing fuel from a nonconventional fuel source. For the purposes of section 29 of the Code, a well is "drilled" before January 1, 1991, if continual drilling of the well is commenced by spudding the well before January 1, 1991.

Rev. Rul. 90-71
Interest rates; underpayments and overpayments. The rate of interest determined under section 6621 of the Code for the calendar quarter beginning October 1, 1990, will remain at 10 percent for overpayments and 11 percent for underpayments.

ADMINISTRATIVE

Notice 90-54
This notice announces that HUD has released updated income limits to be used for computing the income limits under sections 142(d) and 42 of the Code.

Rev. Proc. 90-46
Magnetic tape filing; Forms 1041 and 1065. This procedure sets forth the specifications for the 1990 magnetic tape filing program for tax year 1989 Form 1041, U.S. Fiduciary Income Tax Return, and Form 1065, U.S. Partnership Return of Income.

Announcement 90-97
Form 1090, Statement of Income, Profit and Loss Accounts, is no longer required to be filed.

Announcement 90-98
Additional filing instructions for Form 706, United States Estate (and Generation-Skipping Transfer) Tax Return, are given and the new revision of the form will be available in September 1990.

Announcement 90-99
Additional Form W-2 reporting instructions for Federal, state and local government agencies are given.