This Act may be cited as the “Wildfire Disaster Funding Act ”.

(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; and

“(bb) specified to pay for the costs of wildfire suppression operations.

“(II) WILDFIRE SUPPRESSION OPERATIONS.—The term ‘wildfire suppression operations’ means the emergency and unpredictable aspects of wildland firefighting including—

“(aa) support, response, and emergency stabilization activities;

“(bb) other emergency management activities; and

“(cc) the funds necessary to repay any transfers needed for the costs of wildfire suppression operations.

“(ii) ADDITIONAL NEW BUDGET AUTHORITY.—If a bill or joint resolution making appropriations for a fiscal year is enacted that specifies an amount for wildfire suppression operations in the Wildland Fire Management accounts at the Department of Agriculture or the Department of the Interior, the adjustments for that fiscal year shall be the amount of additional new budget authority provided in that Act for wildfire suppression operations for that fiscal year, but shall not exceed—

“(I) for fiscal year 2017, $1,410,000,000 in additional new budget authority;

“(II) for fiscal year 2018, $1,460,000,000 in additional new budget authority;

“(III) for fiscal year 2019, $1,560,000,000 in additional new budget authority;

“(IV) for fiscal year 2020, $1,780,000,000 in additional new budget authority;

“(V) for fiscal year 2021, $2,030,000,000 in additional new budget authority;

“(VI) for fiscal year 2022, $2,320,000,000 in additional new budget authority;

“(VII) for fiscal year 2023, $2,650,000,000 in additional new budget authority;

“(VIII) for fiscal year 2024, $2,690,000,000 in additional new budget authority;

“(IX) for fiscal year 2025, $2,690,000,000 in additional new budget authority; and

“(X) for fiscal year 2026, $2,690,000,000 in additional new budget authority.

“(iii) AVERAGE COST AND OUTYEAR CALCULATIONS.—The 10-year average of the costs for wildfire suppression operations and the outyear forecasts of the costs for wildfire suppression operations shall be—

“(I) calculated annually; and

“(II) reported in the budget of the President submitted under section 1105(a) of title 31, United States Code, for each fiscal year.”.

(c) Reporting requirements.—If the Secretary of the Interior or the Secretary of Agriculture determines that supplemental appropriations are necessary for a fiscal year for wildfire suppression operations (as defined in subparagraph (E)(i) of section 251(b)(2) of the Balanced Budget and Emergency Deficit Control Act of 1985 (2 U.S.C. 901(b)(2))), the Secretary of the Interior or the Secretary of Agriculture, as applicable, shall—

(1) promptly submit to Congress a request for the supplemental appropriations; and

(2) not later than 30 days after the date on which the supplemental appropriations are made available, submit to Congress a plan describing the manner in which the Secretary of the Interior or the Secretary of Agriculture, as applicable, intends to obligate the supplemental appropriations.