SECTION 4. EFFECTIVE DATE

.01 General Rule . Except as provided in section 4.02, this revenue procedure applies to taxable years beginning in 2004.

.02 Calendar Year Rule . This revenue procedure applies to transactions or events occurring in calendar year 2004 for purposes of sections 3.07 (low-income housing credit), 3.09 (pipeline construction industry optional expense substantiation rules), 3.15 (private activity bond volume cap), 3.23 (funeral trusts), 3.24 (expatriation to avoid tax), 3.25 (valuation of qualified real property in decedent’s gross estate), 3.26 (annual exclusion for gifts), 3.27 (passenger air transportation excise tax), 3.30 (persons against which a federal tax lien is not valid), 3.31 (property exempt from levy), 3.32 (interest on a certain portion of the estate tax payable in installments), 3.33 (attorney fee awards), and 3.34 (periodic payments received under qualified long-term care insurance contracts or under certain life insurance contracts).