AK HB280

Amends Alaska's Multistate Tax Compact (AS 43.19.010) to shift from "business income" to "apportionable income" terminology and adopts market-based sourcing rules for sales of services and intangible property, assigning sales to the state where the taxpayer's market is located rather than where income-producing activity occurs

Establishes specific income apportionment rules for broadcasters (television networks, cable networks, platform distribution companies), sourcing advertising and licensing fee income to the state where the broadcast customer is domiciled

Requires the Department of Revenue to adopt regulations for financial institutions following the Multistate Tax Commission's Formula for Apportionment and Allocation of Net Income of Financial Institutions (adopted November 17, 1994, amended July 29, 2015)

Creates apportionment rules for telecommunications service providers using a costs-of-performance method, where sales are sourced to the state where the greater portion of income-producing activity is performed

Takes effect January 1, 2027, applying to tax returns for tax years beginning on or after that date