Mill rate remaining flat at 18.164 'unprecedented,' New Canaan finance board chairman says Grace Duffield FacebookTwitterEmail New Canaan’s mill rate will stay flat at 18.164 for Fiscal Year 2022, the exact same rate it was for Fiscal Year 2021.Grace Duffield Hearst Connecticut Media / Homeowners may avoid writing larger checks for the tax collector next year after the Board of Finance approved a mill rate of 18.164 for fiscal year 2022, the exact same rate as fiscal year 2021. The budget calls for raising $140.2 million from taxation for fiscal year 2022, an 0.85 percent increase from $138.99 million in 2021. “Everyone works to keep the spending in check,” Todd Lavieri, Board of Finance chairman said after the board voted unanimously to approve the mill rate.