Deductions Eliminated by TCJA: What You Lost

The 2017 Tax Cuts and Jobs Act did not just trim a few line items — it permanently rewired Schedule A for high earners. A household paying $6,000 a year in investment advisory fees lost the ability to deduct a single dollar of it. A $4,050-per-person personal exemption vanished for a family of four, erasing $16,200 in income offsets in one stroke. And the provisions most people assumed would expire after 2025 instead became permanent law in July 2025 under the One Big Beautiful Bill Act (OBBBA).

This is a ledger of what disappeared, what it was worth, and — critically — what the 2025 legislation locked in for good. The figures below are confirmed against IRS guidance and the enacted text of both statutes, not the speculative “TCJA sunset” planning content that dominated coverage through 2024 and is now largely obsolete.

The headline numbers

Five eliminations carry the most weight for a household above $150,000 in income. Each was a real, claimable deduction before 2018. Each is now either permanently gone or permanently capped.

Miscellaneous itemized deductions: the quietest large loss

Before 2018, a category of expenses lumped together as miscellaneous itemized deductions was deductible to the extent the total exceeded 2% of adjusted gross income. The TCJA suspended the entire category for tax years 2018 through 2025. The expectation across most tax planning content was simple: hold on, and these return in 2026.

They do not return. The OBBBA made the elimination permanent, with a narrow carve-out for eligible educators’ unreimbursed expenses. Nolo, citing IRC §67(g) as amended, confirms these deductions will not reappear in 2026 (2025). For a high earner, the lost items are not trivial: investment advisory and asset management fees, tax preparation fees, unreimbursed employee business expenses, and certain legal fees tied to producing income.

Run the arithmetic on a representative case. A household with $400,000 AGI paying a 1% advisory fee on a $1.2 million taxable portfolio incurs $12,000 in management fees. Under pre-2018 rules, the deductible portion was everything above 2% of AGI — $12,000 minus $8,000, or $4,000. At a 35% marginal rate, that was $1,400 in annual tax savings. Now it is zero. The investor still pays the fee; the federal subsidy is gone for good. For households weighing fee-based versus commission structures, the business deductions for self-employed professionals route is one of the few remaining ways to preserve deductibility — fees tied to a trade or business escape the §67(g) elimination.

Personal exemptions: $16,200 erased for a family of four

In 2017, a taxpayer could claim a personal exemption of $4,050 for themselves, a spouse, and each dependent. Iowa State’s Center for Agricultural Law and Taxation confirms the TCJA suspended the exemption from 2018 through 2025 and the OBBBA permanently repealed it (August 2025).

The nearly doubled standard deduction was the trade. For 2025, the standard deduction sits at $15,750 for single filers and $31,500 for joint filers, and the OBBBA made that increase permanent. On paper, a couple swapped $8,100 in personal exemptions for a far larger standard deduction. The math favors small households.

It does not favor large ones. A married couple with three children lost five exemptions — $20,250 in 2017 dollars — and received only the standard deduction increase in return. For families above $150,000 who previously itemized anyway, the exemption loss was pure subtraction with no offsetting standard deduction benefit, because they were already itemizing past the standard amount. This is the mechanic that most “TCJA was a tax cut” coverage glosses over: the headline rate cuts were real, but the base broadened underneath them through exemption repeal. Households deciding whether to itemize should model both paths using a current standard vs. itemized deduction comparison rather than assuming the larger standard deduction always wins.

The SALT cap: the change that actually hurts at $150k+

No TCJA provision generated more high-earner pain than the SALT cap — the $10,000 ceiling on the combined deduction for state and local income, sales, and property taxes. Before 2018, this deduction was unlimited. A New Jersey or California household paying $35,000 in combined state income and property tax deducted all of it. After the TCJA, $10,000 was the wall.

Here the 2025 legislation changed the picture meaningfully — and temporarily. Thomson Reuters, citing IRC §164(b)(7) as amended, reports the OBBBA raised the cap to $40,000 for the 2025 tax year, with the limit increasing 1% annually through 2029 before reverting to $10,000 in 2030 (February 2026). The relief is real but front-loaded with a phaseout.

The phaseout is the catch for exactly the readers this analysis targets. Venable LLP reports the increased cap is reduced by 30% of the amount by which MAGI exceeds $500,000, with the deduction never falling below $10,000 (August 2025). A household at $560,000 MAGI sees the $40,000 cap cut by 30% of $60,000 — $18,000 — leaving $22,000 deductible. Still more than double the old cap, but the benefit erodes fast through the $500,000–$600,000 band, where each added dollar of income costs both tax and lost deduction. The households hit hardest by the original cap are mapped in detail in the SALT cap impact on high earners breakdown.

Mortgage and home equity interest: a permanent haircut

Two changes hit homeowners. The TCJA dropped the mortgage interest deduction ceiling from $1 million of acquisition debt to $750,000 for loans originating after December 15, 2017. It also suspended the deduction for home equity interest unless the borrowed funds were used to buy, build, or substantially improve the residence securing the loan.

Both were scheduled to sunset. Neither will. The Tax Policy Center confirms the OBBBA made the $750,000 limit and the home equity restriction permanent (2025). The pre-TCJA structure — deductible interest on $1 million of acquisition debt plus $100,000 of unrestricted home equity debt — is not coming back.

The cost scales with loan size and rate. On a $1 million mortgage at 6.5%, roughly $250,000 of principal now sits above the deductible line. The interest attributable to that excess — on the order of $16,000 in a loan’s early years — generates no federal deduction. At a 35% marginal rate, that is about $5,600 in annual tax value forfeited versus pre-2018 rules. The full mechanics of what survives are worked through in the mortgage interest deduction’s real dollar value analysis. One bright spot the OBBBA added: mortgage insurance premiums become deductible as qualified residence interest starting in 2026.

Moving expenses and casualty losses: the smaller permanent losses

Two deductions rounded out the eliminations, each modest individually but permanent now.

Moving expenses tied to a job relocation were once an above-the-line deduction — claimable without itemizing. The TCJA suspended it; Moore Colson confirms the OBBBA permanently eliminated it except for active-duty military and certain intelligence personnel (July 2025). A household relocating for a $50,000 cross-country move now absorbs the full cost, and any employer reimbursement is taxable wages rather than an excludable benefit.

Personal casualty and theft losses narrowed too. Before 2018, losses from fires, common thefts, and accidents were deductible above a $100-per-event floor and a 10% AGI threshold. The TCJA restricted deductible losses to those from federally declared disasters. Barnes Dennig reports the OBBBA made that restriction permanent and, starting in 2026, expanded eligibility to certain state-declared disasters (August 2025). A house fire with no disaster declaration produces no deduction — permanently.

Finluxy Deduction Value Index: what the survivors are worth

The eliminations matter most in context of what deductions still deliver. The Finluxy Deduction Value Index measures total tax savings from all claimed deductions as a percentage of gross household income — the real, after-the-fact yield of the deduction system for a given household.

The pattern is the point. The Index climbs with income — but only because higher earners carry larger mortgages, larger state tax bills, and higher marginal rates. The $180,000 household barely clears the standard deduction, so its itemizing yield is a rounding error. The $480,000 household in a high-tax state, now able to use the expanded $40,000 SALT cap, reaches 3.1% — squarely inside the 2–4% benchmark range typical for affluent itemizers. The expanded SALT cap is what pushes that third household over the threshold; under the old $10,000 cap, the same household’s itemized total would drop by $30,000, collapsing the advantage.

What the data shows that most coverage missed

Through 2024, the dominant narrative in tax planning content was the “TCJA sunset” — the assumption that 2026 would restore pre-2018 rules: the $1 million mortgage cap, deductible misc. itemized expenses, personal exemptions, and an uncapped or $10,000 SALT deduction depending on the source. Entire planning strategies were built on waiting it out.

That premise is now wrong on nearly every count. The OBBBA did not let the TCJA expire — it made most of the eliminations permanent and layered a temporary SALT expansion on top. The reversal is specific and verifiable: misc. itemized deductions, the personal exemption, the moving expense deduction, the home equity interest restriction, and the $750,000 mortgage cap are all permanent law as of July 2025. Only the SALT cap moved in the taxpayer’s favor, and only through 2029. Any deduction strategy still anchored to a 2026 sunset is planning against a law that no longer exists.

Methodology

Figures here draw first from primary sources: IRS guidance on TCJA provisions (Publications 936 and 529 lineage), the Internal Revenue Code sections amended by both statutes (§67(g), §151, §163(h), §164(b)(7)), and the enacted text of the OBBBA. Where primary text required interpretation, I corroborated with institutional secondary sources — Tax Policy Center for distributional and structural framing, and law-firm and accounting-firm analyses (Iowa State CALT, Thomson Reuters, Venable, Barnes Dennig, Moore Colson) that cite the statutory provisions directly.

Pre-2018 baselines (the $4,050 personal exemption, the $1 million mortgage cap, the 2% AGI floor) are stated as historical reference points for comparison, not current law. Every status label — “permanently eliminated,” “permanently capped” — reflects post-OBBBA law confirmed across at least two independent sources. The Deduction Value Index scenarios are illustrative calculations applying stated 2025 standard deduction and marginal rate figures; they are not drawn from a survey and are labeled as representative profiles. I excluded tax-software “average deduction” marketing figures and unsourced media deduction lists per the cluster’s sourcing rules.

What this means at $150k+

For a household above $150,000, the practical takeaway is that the deduction landscape is now settled, not pending. Strategies built on waiting for a 2026 reversion should be retired. The one genuine window is the SALT cap: if you live in a high-tax state and your combined state income and property taxes run well above $10,000, the $40,000 cap through 2029 is a real and time-limited benefit — most valuable for households below the $500,000 phaseout threshold, where the full expanded cap applies without reduction. Bunching deductible expenses into these years, accelerating property tax payments where allowed, and reassessing whether itemizing now beats the standard deduction are the live decisions. For those between $500,000 and $600,000 MAGI, the interaction between the SALT phaseout and marginal rates makes income timing unusually consequential, and the analysis there is specific enough that a session with a tax professional who can model your exact MAGI against the phaseout band will pay for itself before the cap reverts in 2030.