OBBBA Tax Changes for High Earners: Complete 2026 Guide

The One Big Beautiful Bill Act (OBBBA) is the most consequential federal tax legislation since 2017. Most provisions took effect January 1, 2026, and high earners in particular need to understand both the benefits and the new phasedowns that can increase effective tax rates in specific income bands.

This guide breaks down every major OBBBA change that affects high-income filers, with worked examples at typical income levels ($300K, $500K, $1M household).

Key Facts: OBBBA tax changes affecting high earners in 2026

• SALT deduction cap raised from $10,000 to $40,400 for 2026, but phases back down to $10,000 for MAGI between approximately $505K and $606K (same threshold for single and MFJ), creating a hidden ~30% effective marginal rate in that band
• New overtime deduction up to $12,500 ($25,000 MFJ), phased out between $150K-$275K (single) / $300K-$550K (MFJ)
• New car loan interest deduction up to $10,000 for US-assembled new vehicles, phased out between $100K-$150K (single) / $200K-$250K (MFJ)
• Federal estate tax exemption raised to $15 million per individual ($30 million per couple)
• Most 2017 TCJA individual provisions made permanent, including the 37% top bracket and doubled standard deduction

The New SALT Cap (and the High-Earner Phasedown Trap)

The single biggest OBBBA change affecting high-income filers in high-tax states.

What Changed

For 2025, the cap is $40,000 ($20,000 for married filing separately). For 2026, it rises approximately 1% to $40,400. The cap and the MAGI threshold increase 1% each year through 2029, then revert to $10,000 after 2029.

The MAGI phasedown applies the same way to both single and married filing jointly filers (the statute does not halve the threshold for single filers, which is how SALT worked pre-OBBBA):

• Phasedown threshold (2026): approximately $505,000 MAGI (1% above 2025’s $500,000 base)
• Phasedown floor: approximately $606,000 MAGI (where the cap hits the $10,000 minimum)
• Phasedown rate: 30 cents per dollar of MAGI above the threshold
• Married filing separately: cap is half the standard cap ($20,200 for 2026), phasedown threshold is half ($252,500 for 2026)

The cap applies to the sum of state and local income taxes (or sales taxes) plus property taxes. For a New York or California filer paying $30,000 in state income tax and $20,000 in property tax, the full $40,400 cap is immediately useful.

How the Phasedown Works

For every dollar of MAGI above $505,000 (MFJ), the SALT cap drops by $0.30. Example:

MAGI	SALT Cap	Effective Deduction Lost
$505,000	$40,400	$0
$555,000	$25,400	$15,000
$605,000	$10,400	$30,000
$606,333+	$10,000	$30,400

The “lost deduction” is what makes this a hidden marginal rate increase. At a 35% federal marginal rate, losing $30,000 of deduction costs an extra $10,500 in federal tax. Spread over the roughly $101,000 of income in the phasedown band, that’s an effective marginal rate of 10.4% above your normal bracket, or roughly 45-47% total federal marginal rate in that band.

Strategic Response for High Earners

Three tactical adjustments for filers whose MAGI falls near the phasedown range:

1. Defer income out of the phasedown band if possible. Push bonuses to January, delay Roth conversions, or time capital gains realizations to stay below $505,000 MAGI (MFJ).
2. Stack deductions in low-phasedown years. If you expect MAGI below $505K one year and above $606K the next, bunch charitable contributions, state tax prepayments, and other itemized deductions into the low year.
3. Consider Pass-Through Entity (PTET) elections. Many states allow pass-through businesses to pay state tax at the entity level, bypassing the SALT cap entirely. For S-corp owners, consultants, and sole proprietors, PTET can effectively restore the full state tax deduction. OBBBA did not eliminate this workaround.

The Overtime Deduction

OBBBA eliminates federal income tax on overtime pay up to $12,500 for single filers ($25,000 MFJ).

How It Works

Overtime (time-and-a-half or double-time premium pay) is tracked separately on your W-2 in a new box. The excess over regular pay becomes a deduction above the line.

Phasedown for High Earners

The overtime deduction phases out $100 per $1,000 of MAGI above $150,000 (single) or $300,000 (MFJ). It fully phases out at:

• $275,000 MAGI (single): deduction = $0
• $550,000 MAGI (MFJ): deduction = $0

For most high earners above $300K household income, the overtime deduction is minimal or zero. It’s more impactful for dual-income households where one spouse earns significant overtime and household income hovers near $300K.

Example

Household income of $250,000 (MFJ) with $15,000 in overtime pay:

• MAGI above phasedown start: $250,000 - $300,000 = $0 below threshold
• Full $15,000 overtime deduction available (since under the $25,000 cap and under the phasedown start)
• Tax savings at 24% marginal rate: $3,600

Household income of $400,000 (MFJ) with $15,000 in overtime pay:

• MAGI above phasedown start: $400,000 - $300,000 = $100,000
• Phasedown: $100 per $1,000 = $10,000 reduction
• Adjusted cap: $25,000 - $10,000 = $15,000
• Full $15,000 overtime deduction still available (at the reduced cap)
• Tax savings at 32% marginal rate: $4,800

Household income of $600,000 (MFJ): deduction fully phased out. No benefit.

The Car Loan Interest Deduction

Up to $10,000 per year of interest on loans for qualifying new vehicles. Effective tax years 2025-2028.

Qualifying Requirements

• Vehicle must be new (not used)
• Assembled in the United States (verify via VIN decode)
• Loan originated in 2025 or later (refinances and leases don’t count)
• Used for personal purposes (business vehicle loans use different rules)

Phasedown

• Starts phasing out: $100,000 MAGI (single) / $200,000 MAGI (MFJ)
• Phasedown rate: $200 per $1,000 of excess MAGI
• Fully phased out: $150,000 MAGI (single) / $250,000 MAGI (MFJ)

For most high-earner households, this deduction is fully phased out. It’s primarily relevant for single filers earning under $150,000 and dual-income households under $250,000 combined.

Worked Example

Single filer, MAGI $120,000, financing a $55,000 US-assembled EV at 6.5% interest:

• First-year interest: approximately $3,575
• Phasedown: $120,000 - $100,000 = $20,000 above threshold
• Reduction: $20,000 / $1,000 × $200 = $4,000
• Adjusted cap: $10,000 - $4,000 = $6,000
• Deductible interest: $3,575 (under the reduced $6,000 cap)
• Tax savings at 24% marginal rate: $858

This deduction incentivizes US-assembled new vehicle purchases by middle-income earners. High earners typically won’t benefit. Pair with the federal EV credit (where applicable) for compounding tax benefits.

Permanent Extension of TCJA Individual Provisions

OBBBA made most 2017 Tax Cuts and Jobs Act individual provisions permanent. For high earners, the most significant:

37% Top Bracket (Made Permanent)

The 37% top marginal rate continues. Without OBBBA, this would have reverted to 39.6% in 2026. The bracket thresholds also continue to move with inflation; for 2026:

• Single filers: 37% starts at $640,600
• Married filing jointly: 37% starts at $768,700

Doubled Standard Deduction (Made Permanent)

• Single: $16,100 for 2026
• Married filing jointly: $32,200 for 2026

For high earners who itemize due to mortgage interest and SALT, the standard deduction usually isn’t relevant. For those who don’t itemize, this is a meaningful baseline.

Mortgage Interest Cap (Made Permanent)

Deductible mortgage interest continues to be capped at interest on $750,000 of principal ($375,000 if married filing separately). Loans taken out before December 15, 2017 remain grandfathered at the prior $1 million cap.

Pass-Through Deduction (Section 199A, Made Permanent)

The 20% Qualified Business Income (QBI) deduction continues for pass-through businesses. Income limits and specified service trade/business limitations still apply. For consultants, small business owners, and 1099 earners, this remains a significant lever.

The Federal Estate Tax Exemption Expansion

OBBBA raised the federal estate and gift tax exemption from $13.99 million per individual (2025) to $15 million per individual ($30 million per married couple) starting January 1, 2026. Indexed for inflation going forward.

What This Means for High-Earner Estate Planning

For households with net worth approaching or exceeding $15M/$30M, the expanded exemption creates significant opportunities:

1. Larger gifts without using exemption. The annual gift exclusion ($19,000 per recipient in 2026) continues unchanged.
2. More aggressive trust planning. Grantor Retained Annuity Trusts (GRATs), Spousal Lifetime Access Trusts (SLATs), and Dynasty Trusts can be funded with larger amounts before triggering estate tax.
3. Accelerated gifting strategies. Using the current exemption before potential future political changes is still wise; OBBBA provides a larger runway for this.

The 40% Rate Above the Exemption

Above $15M per individual, the estate tax is 40%. A $20M estate (single filer) would owe $2M in federal estate tax ($20M - $15M = $5M taxable x 40%). State estate taxes may apply on top, particularly in Washington, Oregon, New York, Massachusetts, and a handful of others with state-level exemptions below the federal level.

Other Notable OBBBA Changes for High Earners

Tip Income Deduction

OBBBA eliminates federal tax on tip income up to certain caps. This is primarily relevant for service industry workers but can matter for high earners with restaurant-owning spouses or tipping gig work. Phasedowns similar to the overtime deduction apply.

Enhanced Child Tax Credit

The refundable child tax credit was modestly expanded under OBBBA, though the full credit still phases out at $400,000 MAGI (MFJ). Most high earners above this threshold see no benefit; those just below may see slightly higher credit amounts.

Bonus Depreciation (Business)

100% bonus depreciation continues for qualifying business property. For high earners with rental real estate, short-term rental tax strategies, or pass-through businesses, this remains a major lever. See our Short-Term Rental Tax Strategy guide for specifics.

Strategic Tax Planning Under OBBBA

For Dual-Income High-Earner Couples Near $500-$600K MAGI

The SALT phasedown creates real optimization opportunities:

1. Manage total MAGI actively. Traditional 401(k) contributions (up to $24,500 each spouse), HSA contributions, and pre-tax deductions keep you below the $505K threshold.
2. Time major income events. Delay a large Roth conversion or stock sale to a year when MAGI will be below $505K.
3. Bunch charitable contributions. In a low-MAGI year, stack deductions; in a high-MAGI year (inside the phasedown), take the standard deduction.

For High-Net-Worth Households ($5M+ Net Worth)

1. Use the expanded estate exemption. Gift appreciated assets into trusts while the $15M/$30M window is open.
2. Coordinate with state estate taxes. If you live in a state with a lower state exemption, federal planning alone isn’t enough.
3. Consider dynasty trust structures. South Dakota, Nevada, and Delaware continue to be favorable jurisdictions for multi-generational planning.

For Self-Employed and 1099 Earners

1. Maximize Section 199A (QBI). The 20% deduction is now permanent. Structure your entity type (S-corp vs sole prop) to maximize it.
2. Use PTET elections for SALT. Pass-through entity tax elections in most states allow you to pay state tax at the entity level, bypassing the SALT cap on your personal return.
3. Consider the custom Solo 401(k). For high-earning self-employed, a custom Solo 401(k) with mega backdoor Roth features can move $40K+ per year into Roth.

Bottom Line

OBBBA benefits high earners in three main ways: expanded SALT deduction (within the phasedown band), permanent TCJA extensions, and a much larger estate tax exemption. It also creates one major new complexity: the SALT phasedown between $505K-$606K MAGI (MFJ) that generates a hidden marginal rate increase.

Action items for 2026 tax planning:

1. Model your MAGI to know where you fall on the SALT phasedown.
2. Maximize tax-advantaged contributions (401(k), HSA, mega backdoor Roth, backdoor Roth IRA) to stay below the $505K threshold where possible.
3. Evaluate estate planning if net worth is approaching $10M+; the expanded exemption creates new gifting opportunities.
4. Run through the full set of phaseouts using our 2026 Phaseouts Guide before making major income timing decisions.

OBBBA is the tax code you’ll be living with for years. Getting 2026 planning right matters more than usual.

Sources

• Public Law 119-1, the One Big Beautiful Bill Act of 2025 (OBBBA): Official text via Congress.gov
• IRS: One Big Beautiful Bill Act summary and guidance
• IRS Revenue Procedure 2025-32: 2026 inflation adjustments (includes standard deduction, tax bracket thresholds)
• Tax Foundation: OBBBA analysis and tax calculator
• Kitces Nerd’s Eye View: Breaking Down the One Big Beautiful Bill Act (OBBBA)
• Grant Thornton: New tax law presents major individual planning opportunities