Wyo. Stat. § 16-4-106: Property tax levy.

The amount of estimated revenue from property tax required by the budget shall constitute the basis for determination of the property tax to be levied for the corresponding tax years subject to legal limitations. The amount of tax shrinkage allowed shall not exceed the actual percentage of uncollected taxes to the total taxes levied for the preceding fiscal year or preceding two (2) fiscal years pursuant to W.S. 16-4-104(h). This section also applies to entities described in W.S. 16-4-125(c).