This bill amends Internal Revenue Code section 121(b) to raise the dollar exclusion for gain on the sale of a principal residence. It replaces each $250,000 reference with $500,000 and each $500,000 reference with $1,000,000, and adds a new statutory provision to index those amounts for inflation starting with taxable years after 2025.
The change preserves existing Section 121 tests (ownership, use, and the once-every-two-years frequency) but increases the tax shelter available to homeowners with large gains — especially married filers and sellers in high-cost, high-appreciation areas. The shift has immediate implications for sellers, tax preparers, and IRS implementation and raises distributional and revenue trade-offs for policymakers to weigh.
At a Glance
What It Does
Amends IRC §121(b) by replacing the current $250,000/$500,000 exclusion amounts with $500,000/$1,000,000 and inserts an annual inflation-adjustment rule that applies for taxable years beginning after 2025. The indexing uses the §1(f)(3) cost-of-living formula with a substituted base year of 2024 and rounds increases to the next lowest $100.
Who It Affects
Homeowners selling principal residences (particularly those with large accrued gains and married couples filing jointly), tax preparers and software vendors who must update calculations, and the IRS for administration. Markets in high-cost metros and areas with large past price appreciation will see the clearest tax impact.
Why It Matters
It materially enlarges the exclusion available under §121 and locks in future increases to preserve buying power. That reduces federal tax on many home sales, alters incentives around selling, and shifts revenue and distributional outcomes without changing the statute's ownership/use limitations.
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What This Bill Actually Does
The bill rewrites the dollar figures in section 121(b) of the Internal Revenue Code so single filers can exclude up to $500,000 of gain on the sale of a principal residence, and joint filers up to $1,000,000. It does not change the familiar qualification rules — the ownership and use tests, the once-every-two-years restriction, or the other mechanics that determine whether a seller may claim any exclusion at all.
In short: more exclusion dollars, same gatekeeping rules.
Beyond bumping the dollar caps, the statute adds a new paragraph that makes those caps subject to annual cost-of-living increases. The text borrows the adjustment method used elsewhere in the Code (the §1(f)(3) COLA procedure) but substitutes the year 2024 as the base; each year the exclusion amounts will be adjusted by the applicable COLA factor and rounded down to the nearest $100.
That indexing starts for taxable years beginning after 2025, so the first automatic increase would apply in years after that start point.Practically, taxpayers with gains that previously exceeded the old caps will see more of their gain sheltered from tax, particularly in high-price metros or from long-held properties that appreciated substantially. The bill instructs no change to the computation of taxable gain beyond the larger exclusion — depreciation recapture for properties previously used as rentals, the taxation of gain above the exclusion amount, and the ownership/use tests remain governed by existing §121 and related provisions.
Also important for practitioners: the law applies to 'sales and exchanges after the date of enactment,' which focuses the rule on closing dates and creates transition questions for contracts already under way at enactment.For implementers, the change is straightforward in principle but nontrivial in practice. The IRS will need to update guidance, forms, and software to accommodate a higher, indexed exclusion and to publish the inflation-adjusted numbers annually.
Tax preparers and tax software firms must similarly adapt withholding worksheets, gain worksheets, and interview logic that currently assume the old caps.
The Five Things You Need to Know
The bill replaces each statutory $250,000 figure with $500,000 and each $500,000 figure with $1,000,000 in IRC §121(b), effectively doubling the exclusion available to individual and joint filers.
It inserts a new §121(b)(5) that indexes the $500,000 and $1,000,000 amounts for inflation for taxable years beginning after 2025 using the §1(f)(3) COLA method with '2024' substituted for '2016'.
The indexing language requires any annual increase that is not a multiple of $100 to be rounded down to the next lowest $100.
The amendments apply to 'sales and exchanges after the date of enactment,' tying coverage to the timing of closings rather than contract dates.
The bill leaves other §121 mechanics intact — ownership and use tests, the two‑year frequency rule, and rules governing nonqualified use and depreciation recapture remain unchanged.
Section-by-Section Breakdown
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Short title — 'More Homes on the Market Act'
Provides the Act's short title. This is a simple housekeeping provision, but it signals the legislative intent and policy framing that proponents will use in explanations and committee materials.
Numeric replacements in IRC §121(b)
Substitutes higher dollar amounts throughout paragraph (b) of section 121: each place the text read '$250,000' becomes '$500,000' and each place it read '500,000' becomes '1,000,000.' Practically, that doubles the statutory exclusion available to single and joint filers. The provision is narrowly focused on the numeric caps and does not amend surrounding qualification or definitional language.
Heading and paragraph updates to reflect $1,000,000
Alters the heading in paragraph (2)(A) to reflect the new $1,000,000 figure. This is a textual clean-up to keep the statute coherent after the numeric changes; it affects how the law is read and referenced in guidance and in software templates that parse statutory headings for user prompts.
Annual inflation adjustment rule added to §121(b)
Adds a new paragraph specifying that for taxable years beginning after 2025, the statutory $500,000 and $1,000,000 amounts will be increased by the cost-of-living adjustment calculated under section 1(f)(3), but with '2024' substituted for '2016' in that formula. The language requires rounding any non‑$100 multiple down to the next lower $100. The clause therefore creates a predictable, statutory indexing procedure the IRS will apply each year and requires the agency to publish the adjusted amounts.
Effective date — sales and exchanges after enactment
States that the amendments apply to sales and exchanges occurring after the date of enactment. This ties the change to the timing of a sale's closing (or similar taxable exchange) and leaves open transitional questions for transactions with pre-enactment contracts but post-enactment closings; practitioners will need to watch Treasury guidance for specifics on handling those edge cases.
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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
- Homeowners in high-appreciation markets: Sellers with gains that previously exceeded the $250,000 or $500,000 caps will now shelter more gain, reducing or eliminating tax on large price gains common in coastal and rapidly growing metro areas.
- Married couples filing jointly: The joint-filers exclusion increases to $1,000,000, so many married sellers who previously faced tax on part of their gain will receive the largest relative benefit.
- Long-term owners with substantial appreciation: Owners who held homes for decades and accrued large untaxed appreciation gain the most from higher nominal caps and future inflation adjustments.
- Real estate professionals and local markets: By lowering the after-tax cost of moving (for sellers with large gains), the bill could modestly increase listings in some markets, benefiting brokers and potentially improving market liquidity.
Who Bears the Cost
- Federal Treasury (reduced receipts): Larger exclusions lower taxable gains reported to the Treasury, producing a fiscal cost relative to current law; the bill contains no offsetting revenue provisions.
- IRS (implementation and guidance burden): The agency must update forms, instructions, and outreach to implement the higher, indexed caps and answer transition questions from taxpayers and preparers.
- Tax professionals and software vendors: Returns, worksheets, interview scripts, and software logic that assume fixed §121 caps will require code changes and testing to reflect indexing and higher thresholds.
- Lower- and moderate-income prospective sellers who don't exceed prior caps: Because the benefit accrues disproportionately to sellers with larger gains, households that already qualified for full exclusion under current law gain less — shifting relative benefit toward wealthier homeowners.
Key Issues
The Core Tension
The central dilemma: increase the tax shelter for home sellers to preserve purchasing power and possibly encourage listings, versus the fiscal cost and unequal distribution of benefits. The bill delivers broad, permanent relief in dollar terms and automatic inflation protection, but it mainly accrues to owners with large gains rather than to first-time or low-income buyers — forcing a trade-off between administrable, broad-based tax relief and targeted housing policy.
The bill solves a clear problem — the erosion of the real value of fixed-dollar exclusions — by raising the caps and adding indexing, but it raises several implementation and policy questions. First, the distributional effect is stark: the larger exclusion primarily helps sellers who realize substantial nominal gains, which tends to be higher-income households in high-cost areas.
It is not targeted relief for first-time or lower-income homeowners. Second, the interaction with existing §121 constraints matters.
Because the bill leaves ownership, use, and the two‑year frequency rule untouched, taxpayers who would try to use multiple home sales or convert nonqualified use into repeated exclusions remain governed by the current anti-abuse mechanics; however, the larger caps make those abuse opportunities more consequential if they occur.
On administration, the indexing clause's mechanics are precise but not frictionless. The statute borrows the §1(f)(3) COLA formula but substitutes a base year; implementing that substitution requires IRS and software vendors to treat §121 as a newly-indexed provision and to publish adjusted numbers annually.
The effective-date language ('sales and exchanges after the date of enactment') should simplify application, but it leaves open practical questions about deals executed pre-enactment and closed post-enactment (contract dates, escrow instructions, and allocation provisions). Finally, because the bill does not change other tax rules that interact with home sales — for example, treatment of prior rental use and depreciation recapture — practitioners must continue to layer those rules when computing taxable gain above any exclusion.
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