Download sales tax rate tables for any state for free. Tax rate tables delivered via email monthly to keep you up to date on changing rates. We will email you each month when sales tax rates change. Complete the form to receive sales tax rate tables by ZIP code Iowa Sales/Use/Excise Tax Exemption Certificate, page 3 31-014c (12/06/18) Qualifying computer software, specified digital products, and igital services:d The product purchased may only be those listed in Iowa Code section 423.3(104), must be purchased by
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