Download all North Carolina sales tax rates by zip code. The Cabarrus County, North Carolina sales tax is 7.00% , consisting of 4.75% North Carolina state sales tax and 2.25% Cabarrus County local sales taxes.The local sales tax consists of a 2.25% county sales tax. 1  The Cabarrus County Sales Tax is collected by the merchant on all qualifying sales made within Cabarrus County.