BOISE, Idaho (AP) — The Idaho House Revenue and Taxation Committee voted Monday to bring the state's tax code in line with federal rules, a move that's estimated to cost Idaho roughly $45 million.

Tax officials say the bill, approved 13-3, will cost the state $17.2 million this fiscal year and another $28.7 million in fiscal 2017. Republican Reps. Heather Scott of Blanchard, Ron Nate of Rexburg and Greg Chaney of Caldwell objected because the bill removes a requirement for same-sex couples to file separate state tax returns.

Lawmakers usually prefer to sync the state's tax code with the federal version to make it easier for residents and businesses to do their taxes or avoid having to keep separate accounting books to track the different rules.