The bill creates new sales and use tax exemptions by adding sections to chapter 82.08 RCW and chapter 82.12 RCW for the sale and use of qualifying farm equipment by an "eligible farmer," subject to conditions in the bill. It defines "farm equipment" to include tractors, trailers, combines, tillage implements, balers, attachments and accessories used in planting, cultivating, irrigation, harvesting, and marketing of agricultural, horticultural, or livestock products, and it expressly excludes motor vehicles as defined in RCW 46.70.011 and motorcycles. Eligibility is limited by a farm income threshold of $2,000,000 in either gross sales or harvested value (or both) of agricultural products and bee pollination services in the preceding tax year, aggregated with affiliates, and an eligible farmer may claim the exemption only once total per calendar year. The bill imposes procedural requirements: a buyer must provide an exemption certificate in a form and manner prescribed by "the department" or a seller may capture prescribed data elements under the streamlined sales and use tax agreement; sellers must retain a copy of the certificate or captured data elements and buyers must keep records necessary for the department to verify eligibility. The department is required to adjust the farm income threshold using a specified consumer price index method and publish the adjusted threshold by December 31, 2031, with the adjusted threshold applying to purchases on or after January 1, 2032. Sections establishing the tax preferences expire October 1, 2036. The act applies to sales or uses occurring on or after October 1, 2026, takes effect October 1, 2026, and includes a tax preference performance statement (Sec. 4) stating the relief is for evaluation only and does not create a private right of action. Legally, this is a creation of new tax exemptions (new law) with related procedural changes and temporal limits; it adds new statute text to existing tax chapters and references existing RCW definitions (RCW 82.08.855, RCW 82.04.213, RCW 82.04.299, RCW 46.70.011). The extracted text does not name the department responsible, does not include the full referenced definitions, does not list the specific data elements a seller may capture, and does not specify the session law chapter number for the act.

Starting October 1, 2026, farmers whose combined farm income (including affiliates) was $2,000,000 or less in the prior year would be able to avoid paying sales or use tax one time per calendar year on qualifying farm equipment purchases or uses, which likely reduces the upfront after-tax cost of a major piece of equipment like a tractor or combine; equipment meant for public road use and motorcycles are excluded. Sellers of such equipment would need to collect and keep an exemption certificate or authorized data elements and buyers must keep records to prove eligibility, so sellers take on new routine paperwork and potential audit risk while eligible farmers gain a limited annual tax saving. A state department (not named in the text) must create the exemption certificate and, by December 2031, adjust the $2,000,000 threshold for inflation and publish the new threshold to apply starting January 1, 2032; sections granting the exemption expire October 1, 2036. Important details needed to know who exactly qualifies and what specific data sellers may capture are not included here because definitions and the identity of the administering department are referenced by citation but not provided in the extracted facts.