Are Denver Taxes Too High? The Fiscal Impacts of Ordinance 304 “Enough Taxes Already” Oct 12, 2021 | 2021 Research, Featured Research, Recent Research, Taxes & FeesOrdinance 304 or the “Enough Taxes Already” ballot initiative proposes to cut the City of Denver’s sales tax from 4.81% to 4.5% and impose a cap at the latter rate.