Wyo. Stat. § 9-4-207
§ 9-4-207. Disposition of unexpended appropriations.
(a) All unexpended general fund appropriations shall lapse as of the end of the fiscal period excluding appropriations for purposes as specified in subsection (d) of this section.
(b) All unexpended federal funds appropriations and budget authorizations to accept and expend federal funds as provided by W.S. 9-4-206(b) shall be reviewed by the state budget department at the end of the fiscal period. The department may authorize amounts to be carried forward into the next fiscal period which are necessary to complete activities or functions in progress, for activities or functions not then started, and for purposes as specified in subsection (d) of this section. Federal funds not carried forward shall revert to the general fund unless federal requirements provide otherwise or unless otherwise provided by the legislature.
(c) Unexpended appropriations from any funds created by this act not specified in subsection (a) or (b) of this section shall lapse at the end of the fiscal period and be accounted for as unappropriated surplus within the fund or account if applicable, excluding appropriations for purposes as specified in subsection (d) of this section.
(d) Appropriations for the purposes specified in this subsection shall be excluded from reverting pursuant to subsections (a) through (c) of this section. Appropriations which do not revert pursuant to this subsection shall be expended only on the projects for which the funds were appropriated. Funds subject to this subsection are appropriations:
(i) For capital outlays;
(ii) For information technology projects which have been certified by the state chief information officer as having a defined scope, defined process to ensure competitive bidding, and an identified need for continuing the expenditure beyond the applicable fiscal period from unexpended appropriations. The certification shall be provided to the state auditor prior to the end of the applicable fiscal period;
(iii) Which are specifically designated by law as not subject to reversion under this section.
(e) In each even numbered year:
(i) For purposes of reverting unexpended appropriations:
(A) Not later than July 15, the state auditor shall provide to each affected agency a list of existing unexpended appropriations or authorizations from all prior fiscal periods;
(B) Not later than August 15, each agency shall provide to the auditor a list of existing unexpended appropriations or authorizations for all prior fiscal periods and amounts which can be reverted;
(C) Not later than October 1, the auditor shall revert any unexpended appropriation for which there is no legal authority to carry forward the appropriation into the next fiscal period.
(ii) For purposes of reporting unexpended appropriations:
(A) Not later than October 15, the state auditor shall provide to each affected agency a list of existing unexpended appropriations or authorizations from all prior fiscal periods;
(B) Not later than November 15, each agency shall provide to the state auditor the nature of each outstanding obligation, the authority to maintain any unexpended appropriation and a timeline for expenditure of funds to meet any outstanding obligation legally incurred.
(iii) Not later than December 1, the auditor shall:
(A) Repealed by Laws 2016, ch. 8, § 2.
(B) In consultation with the state budget department, report to the governor and joint appropriations committee on all unexpended appropriations or authorizations remaining after September 30. The state chief information officer shall be consulted for purposes of information technology projects within the report. The report shall include:
(I) Identification of the provision of law initially appropriating the funds;
(II) The amount of funds not reverted;
(III) An explanation of why each amount did not revert and for each capital outlay or information technology project for which funds did not revert, a description of the project;
(IV) The anticipated date upon which the funds will revert;
(V) For funds not reverted pursuant to W.S. 9-2-1008, the fund type, purpose and timeline for expenditure of funds to meet any outstanding obligation legally incurred;
(VI) The account or fund to which the funds will revert.
(f) For purposes of subsection (e) of this section funds within an account or fund established by codified statute as not subject to reversion or lapse at the end of a fiscal period shall not be considered as reportable funds.
(g) The state auditor, in consultation with the state budget department, shall accommodate the department of transportation’s October through September fiscal period in implementing the reporting requirements of subsections (e) and (f) of this section regarding the disposition of unexpended appropriations while still identifying any reversions by October 1 of each even numbered year.