MO SB403

Changes the cap on Infrastructure System Replacement Surcharge (ISRS) revenues from 10% of base revenue to 1.25% of Missouri gross jurisdictional revenues annually, excluding pass-through taxes like gross receipts and sales taxes

Extends the time period between required general rate proceedings from 3 years to 5 years for gas corporations collecting ISRS charges

Allows gas corporations to defer unrecovered costs exceeding the 1.25% annual cap, with monthly carrying costs equal to the corporation's net of tax cost of capital, for recovery in subsequent years or future rate proceedings

Permits gas corporations to collect applicable gross receipts tax, sales tax, and similar pass-through taxes in addition to the ISRS rate adjustment, without counting against the 1.25% cap

Preserves the authority of the Public Service Commission, public counsel, local government officials, and groups of 25+ consumers to file complaints under section 386.390 alleging unreasonable or unlawful rates