may direct the Congressional Budget Office to include, in any estimate of a bill or joint resolution prepared under section 402 of the Congressional Budget Act of 1974, an estimate of any change in debt service costs resulting from carrying out such bill or resolution. Any estimate of debt service costs provided under this section shall be advisory and shall not be used for purposes of enforcement of such Act, the rules of the House of Representatives, or this concurrent resolution. This section shall not apply to authorizations of programs funded by discretionary spending or to appropriation bills or joint resolutions, but shall apply to changes in the authorization level of appropriated entitlements. 306. Fair-value credit estimates (a) Fair-value estimates Upon the request of chair of the Committee on the Budget of the House of Representatives, any estimate prepared by the Director of the Congressional Budget Office for a measure that establishes or modifies any program providing loans or loan guarantees shall, as a supplement to such estimate and to the extent practicable, provide a fair-value estimate of such loan or loan guarantee program. (b) Baseline estimates The Congressional Budget Office shall include estimates of loan and loan guarantee programs, on a fair-value and credit reform basis, as practicable, in its The Budget and Economic Outlook. (c) Enforcement in the House of Representatives If the Director of the Congressional Budget Office provides an estimate pursuant to subsection (a), the chair of the Committee on the Budget of the House of Representatives may use such estimate to determine compliance with the Congressional Budget Act of 1974 and other budget enforcement requirements. 307. Adjustments for improved control of budgetary resources (a) Adjustments of discretionary and direct spending levels In the House of Representatives, if a committee (other than the Committee on Appropriations) reports a bill or joint resolution, or an amendment thereto is offered or conference report thereon is