NASA is issuing an interim rule amending the NASA Federal Acquisition Regulation Supplement (NFS) to implement revisions to the voucher submittal and payment process. These revisions are necessary due to section 893 of the National Defense Authorization Act for Fiscal Year 2016 prohibiting the Defense Contract Audit Agency (DCAA) from performing audit work for non-Defense Agencies. As a result of section 893, DCAA has ceased cost voucher audit support to NASA, in turn, jeopardizing payment to contractors for work performed. NASA has revamped its cost voucher submission and payment process to ensure the continued prompt payment to its suppliers. Accordingly, the NFS needs to be immediately revised to implement procedural changes to minimize cost voucher submission and payment delays to NASA suppliers as well the potential accrual of Government interest payments to contractors. NASA does not expect this interim rule to have a significant economic impact on a substantial number of small entities because the guidance will not create additional burden to the contractor but rather the rule is intended to update the current voucher submission process at NASA, which will result in fewer voucher rejections, rework, and payment delays.