1. Short title This Act may be cited as the Wildfire Disaster Funding Act . 2. Wildfire disaster funding authority (a) Disaster funding Section 251(b)(2)(D) of the Balanced Budget and Emergency Deficit Control Act of 1985 ( 2 U.S.C. 901(b)(2)(D) ) is amended— (1) in clause (i)— (A) in the matter preceding subclause (I), by striking the total of— and inserting an amount equal to the difference between— ; (B) by redesignating subclauses (I) and (II) as items (aa) and (bb), respectively, and indenting the items appropriately; (C) by inserting before item (aa) (as so redesignated) the following: (I) the sum obtained by adding— ; (D) in item (bb) of subclause (I) (as so redesignated)— (i) by striking subclause (I) and inserting item (aa) ; and (ii) by striking the period at the end and inserting ; and ; and (E) by adding at the end the following: (II) the additional new budget authority provided in an appropriations Act for wildfire suppression operations pursuant to subparagraph (E) for the preceding fiscal year. ; and (2) by adding at the end the following: (v) Beginning in fiscal year 2018 and for each fiscal year thereafter, the calculation of the average funding provided for disaster relief over the previous 10 years shall include, for each fiscal year during that period, the additional new budget authority provided in an appropriations Act for wildfire suppression operations pursuant to subparagraph (E) for the preceding fiscal year. . (b) Wildfire suppression Section 251(b)(2) of the Balanced Budget and Emergency Deficit Control Act of 1985 ( 2 U.S.C. 901(b)(2) ) is amended by adding at the end the following: (E) Wildfire suppression (i) Definitions In this subparagraph: (I) Additional new budget authority The term additional new budget authority means the amount provided for a fiscal year in an appropriations Act that is— (aa) in excess of the 10-year average of the costs for wildfire suppression operations, as calculated for fiscal year 2015