Income Taxes

6 Months Ended

Mar. 31, 2026

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

Income Tax Provision

Our income tax expense or benefit is not always directly correlated to the amount of pre-tax income or loss for the associated period due to a variety of factors, including, but not limited to, the impact of tax credits and permanent differences. Historically, the Company's income tax provision for quarterly interim periods was based on an estimated annual effective income tax rate, adjusted for the effect of discrete items arising in that quarter. For the three and six months ended March 31, 2026, the Company utilized the discrete effective tax rate method, as allowed by ASC Subtopic 740- 270, Income Taxes—Interim Reporting, to calculate its interim income tax provision. The discrete method is applied when the use of the estimated annual effective tax rate is impractical because it is not possible to reliably estimate the annual effective tax rate. The discrete method treats the year-to-date period as if it were the annual period and determines the income tax expense or benefit on that basis. The Company believes that use of the discrete method is more appropriate than the estimated annual effective tax rate method because the significant impact of expected energy efficiency tax credits for the current fiscal year prevents the Company from reliably estimating its annual effective tax rate.

We recognized income tax benefit of $17.6 million and $16.1 million for the three and six months ended March 31, 2026, compared to income tax expense of $1.4 million and $1.4 million for the three and six months ended March 31, 2025. Income tax benefit for the six months ended March 31, 2026 was primarily driven by income tax benefit on loss from operations, energy efficiency tax credits generated from closings during the current fiscal year, and a discrete tax benefit from tax credits related to prior year activities, partially offset by permanent differences, and stock-based compensation activity in the period. Income tax expense for the six months ended March 31, 2025 was primarily driven by income tax expense on earnings from operations and permanent differences, partially offset by energy efficiency tax credits generated from expected closings during the current fiscal year, and stock-based compensation activity in the period.

Deferred Tax Assets and Liabilities

The Company continues to evaluate its deferred tax assets each period to determine if a valuation allowance is required based on whether it is more likely than not that some portion of these deferred tax assets will not be realized. As of March 31, 2026, management concluded that it is more likely than not that all of our federal and certain state deferred tax assets will be realized. As part of our analysis, we considered both positive and negative factors that impact profitability and whether those factors would lead to a change in the estimate of our deferred tax assets that may be realized in the future. At this time, our conclusions on the valuation allowance and Internal Revenue Code Section 382 and Section 383 limitations related to our deferred tax assets remain consistent with the determinations we made during the period ended September 30, 2025, and such conclusions are based on similar company specific and industry factors to those discussed in Note 12 to the consolidated financial statements within our 2025 Annual Report.