AB 2180, the 2026 California omnibus update to Proposition 218 refund provisions, was amended and re-referred to committee on May 22, 2026. The bill updates the mechanism by which property owners who successfully challenge assessments recover overpaid amounts. The May 22 amendment adjusted the refund calculation methodology — specifically how the comparison period is defined, affecting the dollar amount that successful challengers can recover. Districts with pending or anticipated assessment challenges should have counsel review the amendment text before filing or responding to any pending claims.

Watch: Committee vote and floor scheduling before the California legislative calendar closes.

Source: California Legislature, AB 2180 bill history.