Section 4.203 - Taxpayer identification information(a) If the contractor has furnished a Taxpayer Identification Number (TIN) when completing the solicitation provision at 52.204-3, Taxpayer Identification, or paragraph (l) of the solicitation provision at 52.212-3, Offeror Representations and Certifications- Commercial Products and Commercial Services, the contracting officer shall, unless otherwise provided in agency procedures, attach a copy of the completed solicitation provision as the last page of the copy of the contract sent to the payment office.(b) If the TIN or type of organization is derived from a source other than the provision at 52.204-3 or 52.212-3(l), the contracting officer shall annotate the last page of the contract or order forwarded to the payment office to state the contractor's TIN and type of organization, unless this information is otherwise provided to the payment office in accordance with agency procedures.(c) If the contractor provides its TIN or type of organization to the contracting officer after award, the contracting officer shall forward the information to the payment office within 7 days of its receipt.(d)Federal Supply Schedule contracts. Each contracting officer that places an order under a Federal Supply Schedule contract (see Subpart 8.4) shall provide the TIN and type of organization information to the payment office in accordance with paragraph (b) of this section.(e)Basic ordering agreements and indefinite-delivery contracts (other than Federal Supply Schedule contracts).(1) Each contracting officer that issues a basic ordering agreement or indefinite-delivery contract (other than a Federal Supply Schedule contract) shall provide to contracting officers placing orders under the agreement or contract (if the contractor is not required to provide this information to the System for Award Management)- (i) A copy of the agreement or contract with a copy of the completed solicitation provision at 52.204-3 or 52.212-3(l) as the last page of the agreement or contract; or(ii) The contractor's TIN and type of organization information.(2) Each contracting officer that places an order under a basic ordering agreement or indefinite-delivery contract (other than a Federal Supply Schedule contract) shall provide the TIN and type of organization information to the payment office in accordance with paragraph (a) or (b) of this section.63 FR 58588, Oct. 30, 1998, as amended at 68 FR 56672 , Oct. 1, 2003; 73 FR 33638 , June 12, 2008; 78 FR 37677 , June 21, 2013; 86 FR 61020 , Nov. 4, 2021