Ohio: ORC Ann. §§ 5739.02, 5739.03
ORC Ann. § 5739.02. Levy of sales tax; purpose; rate; exemptions; presumption of taxability.
For the purpose of providing revenue with which to meet the needs of the state, for the use of the general revenue fund of the state, for the purpose of securing a thorough and efficient system of common schools throughout the state, for the purpose of affording revenues, in addition to those from general property taxes, permitted under constitutional limitations, and from other sources, for the support of local governmental functions, and for the purpose of reimbursing the state for the expense of administering this chapter, an excise tax is hereby levied on each retail sale made in this state.
(B) The tax does not apply to the following:
(10) Sales not within the taxing power of this state under the Constitution or laws of the United States or the Constitution of this state;
ORC Ann. § 5739.03. Consumer to pay tax; collection and reporting of tax by vendor; exemption certificates.
(B) (1) (a) If any sale is claimed to be exempt under division (E) of section 5739.01 of the Revised Code or under section 5739.02 of the Revised Code, with the exception of divisions (B)(1) to (11) or (28) of section 5739.02 of the Revised Code, the consumer must provide to the vendor, and the vendor must obtain from the consumer, a certificate specifying the reason that the sale is not legally subject to the tax. The certificate shall be in such form, and shall be provided either in a hard copy form or electronic form, as the tax commissioner prescribes.
(b) A vendor that obtains a fully completed exemption certificate from a consumer is relieved of liability for collecting and remitting tax on any sale covered by that certificate. If it is determined the exemption was improperly claimed, the consumer shall be liable for any tax due on that sale under section 5739.02, 5739.021, 5739.023, or 5739.026 or Chapter 5741. of the Revised Code. Relief under this division from liability does not apply to any of the following:
(i) A vendor that fraudulently fails to collect tax;
(ii) A vendor that solicits consumers to participate in the unlawful claim of an exemption;
(iii) A vendor that accepts an exemption certificate from a consumer that claims an exemption based on who purchases or who sells property or a service, when the subject of the transaction sought to be covered by the exemption certificate is actually received by the consumer at a location operated by the vendor in this state, and this state has posted to its web site an exemption certificate form that clearly and affirmatively indicates that the claimed exemption is not available in this state;
(iv) A vendor that accepts an exemption certificate from a consumer who claims a multiple points of use exemption under division (D) of section 5739.033 of the Revised Code, if the item purchased is tangible personal property, other than prewritten computer software.
(2) The vendor shall maintain records, including exemption certificates, of all sales on which a consumer has claimed an exemption, and provide them to the tax commissioner on request.