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Introduced February 27, 2025 by Adam Smith · Last progress February 27, 2025
Creates a new federal excise tax on certain owners of single-family homes who keep “excess” properties instead of selling them, and denies common tax breaks to owners who are liable for that excise tax. Specifically, it adds a new chapter to the tax code imposing the excise tax and prevents affected owners from claiming mortgage interest deductions and depreciation deductions for those single-family residences for taxable years when they owe the new excise tax. The changes take effect for taxable years beginning after enactment.
The bill seeks to curb speculative holding of single‑family homes and raise revenue by imposing an excise tax and denying certain deductions, but it increases tax burdens and compliance complexity for some homeowners and risks higher housing costs or reduced rental investment.
Homeowners and local housing markets: the bill creates a financial incentive for owners of excess single‑family homes to sell or relet properties (by imposing an excise tax on holdings), which could increase housing supply and reduce vacancies in communities.
Homeowners who are not subject to the new chapter 50B rules retain existing mortgage interest and depreciation tax benefits, preserving current incentives for typical owner‑occupied homeowners.
Federal budgets/taxpayers: denying certain deductions to owners liable under chapter 50B is likely to increase federal tax revenue, which could reduce deficit pressure or fund other programs.
Owners of second or investment single‑family homes (and potentially renters/buyers): the new excise tax creates an uncertain new tax liability and could prompt owners to raise rents or sales prices to offset the cost, increasing housing costs for consumers.
Owners found liable under chapter 50B (e.g., some landlords/investors): losing the mortgage interest deduction and depreciation for single‑family residences increases taxable income and can substantially raise tax bills for affected owners.
Taxpayers and the IRS: the bill adds complexity and administrative burden—affected taxpayers must determine chapter 50B liability and apply new exceptions, and the IRS must develop enforcement and compliance rules—which raises compliance costs and may increase disputes or errors.