The Shelter Act adds two new tax credits to encourage resilience investments. A nonrefundable personal credit under Sec. 25G allows 25% of qualified disaster mitigation expenditures, subject to annual and cumulative limits for a qualified dwelling unit.
A parallel business credit under Sec. 45BB provides 25% of the same kind of expenditures, with a separate cap and a business-specific phaseout based on average gross receipts. The bill also sets standards for which expenditures qualify, how costs are treated (including labor and inspection costs), and how credits interact with other tax provisions.
It becomes effective for taxable years beginning after December 31, 2025.
Together, the credits aim to shift incentives toward protective upgrades in disaster-prone areas, while keeping spending targeted, limited, and auditable. The design anticipates phased reductions for higher-income households and larger businesses, as well as a prohibition on double benefits for the same expenditures.
At a Glance
What It Does
Creates a 25% personal tax credit (Sec. 25G) for qualified disaster mitigation expenditures, with annual caps per taxpayer and an across-the-board dwelling-unit cap; creates a 25% business tax credit (Sec. 45BB) with a separate cap and a business-specific phaseout. Defines eligible expenditures and imposes documentation and carryforward rules.
Who It Affects
Individuals incurring mitigation costs on qualified dwelling units in the U.S. or territories; businesses with a U.S. place of business incurring qualifying expenditures; tax professionals and mitigation contractors.
Why It Matters
Sets a federal resilience incentive, encouraging pre-disaster investments in roofs, walls, flood protection, and other protections, while limiting cost to taxpayers through caps and phased reductions.
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What This Bill Actually Does
The bill creates two new tax credits to encourage disaster-mitigation investments. The personal credit (Sec. 25G) is nonrefundable and equals 25% of qualified expenditures made by an individual during the tax year, with a per-person cap of $3,750 and a joint return cap of $7,500.
There is also a lifetime cap of $15,000 per qualified dwelling unit, reduced by prior credits if applicable. The credit phases out as adjusted gross income increases above a base level, with the reduction scaled by the taxpayer’s income, and the amounts are adjusted for inflation after 2026.
Labor costs, inspection costs, and certain other related costs are eligible when properly allocated to the onsite preparation or installation of qualifying property.
The security and mitigation standards are expansive: qualifying expenditures cover roofing, water barriers, wind- and ignition-resistant features, flood protections, storm shelters, generators, smart drainage, flood openings, and many other resilience measures, provided they meet consensus-based codes and, where relevant, floodplain regulations. A separate business credit (Sec. 45BB) mirrors the personal credit but applies to a taxpayer’s place of business and uses a different cap—up to $5,000 per year, subject to a phaseout tied to average gross receipts over the prior three years.
The two credits are designed to avoid double benefits for the same expenditure, and both credits require thorough documentation to the Secretary.The bill also adds a conforming amendment to the tax code to integrate the new credits with existing provisions and sets an effective date of 2026 for the new rules, with the amendments applying to taxable years beginning after December 31, 2025. In practice, this means taxpayers and businesses can plan mitigation upgrades with an anticipated tax-advantaged return, while the Treasury weighs the fiscal impact and compliance costs.
The Five Things You Need to Know
The bill creates a 25% personal disaster mitigation credit (Sec. 25G) with a $3,750 per-person and $7,500 joint-filed annual cap.
There is a cumulative $15,000 per-qualified dwelling unit cap across all years, reducing the credit if prior credits exceed this limit.
Income phaseout reduces the credit as AGI rises above $100,000, with inflation-adjusted updates after 2026.
A parallel 25% business credit (Sec. 45BB) applies to qualified mitigation expenditures with a $5,000 annual cap and a separate phaseout based on average gross receipts.
No double benefit rule ensures expenditures aren’t credited under both Sec. 25G and Sec. 45BB.
Section-by-Section Breakdown
Every bill we cover gets an analysis of its key sections.
Nonrefundable personal credit for disaster mitigation expenditures (Sec. 25G)
This section introduces the personal credit, determining the baseline credit as 25% of qualified disaster mitigation expenditures for the tax year. It imposes a $3,750 cap for individuals and a $7,500 cap for joint filers, as well as a per-dwelling-unit lifetime cap of $15,000. It establishes an income-based phaseout that reduces the credit proportionally to AGI, incorporates inflation adjustments after 2026, and requires that labor costs and inspection costs be treated as part of the qualified expenditures. It also provides carryforwards for unused credits (up to five years) and sets documentation safeguards for the Secretary.
Limitation and phaseout mechanics
Within the same section, the statute articulates how the phaseout is calculated and how inflation adjustments apply in future years, ensuring that higher-income taxpayers receive smaller credits and that annual and cumulative caps are maintained. The section also clarifies rounding rules to the nearest $50 and sets joint-filing rules that double the dollar amounts for the purpose of reductions.
Disaster mitigation credit for businesses (Sec. 45BB)
This section creates a business credit identical in rate (25%) to the personal credit, but with a separate cap of $5,000 per year and a business-oriented phaseout. It ties the cap reduction to average gross receipts over the prior three years (beyond a $5,000,000 baseline) and includes inflation adjustments after 2026. It defines qualified disaster mitigation expenditures as those applicable to a place of business and mirrors definitions of expenditures from the personal credit, with special provisions for place of business in high-risk areas.
Conforming amendments to the Internal Revenue Code
The bill adds Sec. 25G (disaster mitigation expenditures) and Sec. 45BB (disaster mitigation credit) to the Code, and amends Sec. 38(b) to incorporate the new business credit into the overall credit framework of the tax code. It also updates the Table of Sections to reflect these new credits.
Effective date and application
Amendments apply to taxable years beginning after December 31, 2025. The new credits would be usable for tax years starting in 2026 onward, with inflation adjustments applying in later years. The provisions carry an implementation timeline that requires documentation and compliance under the new rules.
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Explore Finance in Codify Search →Who Benefits and Who Bears the Cost
Every bill creates winners and losers. Here's who stands to gain and who bears the cost.
Who Benefits
- Qualified homeowners with disaster-prone dwellings—who will receive a 25% credit for mitigation expenditures and face caps that reflect household budgets and incentives.
- Businesses with a U.S. place of business located in disaster-prone or recently declared disaster areas—who can claim a 25% credit up to $5,000 for qualifying mitigation expenditures.
- Contractors, architects, engineers, and mitigation retrofit suppliers—who will be beneficiaries of demand for qualified work and materials.
- State and local agencies implementing hazard mitigation standards—who gain visibility into federally supported mitigation investments.
- Tax professionals and financial planners—who will advise clients on optimizing the new credits and ensuring eligibility.
Who Bears the Cost
- Taxpayers claiming credits bear the upfront cost of mitigation investments, even as credits reduce tax liability.
- The federal government foregoes revenue corresponding to the credits, especially for households and businesses with larger, compliant expenditures.
- Construction and design firms bear costs for compliance, documentation, and potential training to meet the eligible standards.
- State and local governments may incur administrative costs in applying state and local hazard standards to determine eligibility.
- Insurers and resilience programs could see long-term shifts in claims and risk pools, depending on uptake of recommended mitigations.
Key Issues
The Core Tension
The central tension is balancing strong incentives for disaster mitigation with the risk of over- or under-incentivizing investments through caps, phaseouts, and broad eligibility, while ensuring uniform standards and manageable administrative costs.
The framework relies on a broad list of eligible expenditures, many of which depend on consensus-based codes and federal floodplain management standards. This breadth creates opportunities for interpretation and potential eligibility disputes across jurisdictions with varying codes.
The requirement that expenditures not be funded by government entities helps prevent double-dipping but may complicate partnerships with public programs or cost-sharing arrangements. Moreover, the phaseouts, while designed to target high-need contexts, could dampen incentives for mid-income households if the cap and AGI reductions interact unfavorably with local housing costs.
Administrative burdens—documentation, cost allocation between labor and materials, and verification of compliance with “latest published editions” of standards—will be central to achieving the intended results.
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