Ultra-High-Net-Worth Tax Planning: 2026 Strategies for $30M+ Families

Not tax or legal advice. All figures verified for 2026. Consult a qualified tax advisor before acting on any strategy described here.

At $30M+ of investable assets, federal tax is no longer a single-rate problem. It is a stack: ordinary income tax, net investment income tax, alternative minimum tax, and Medicare surcharges all layer on top of each other, and the order of operations matters. A family that doesn't coordinate across the stack doesn't just pay more tax — they miss planning windows that close permanently.

This guide walks through the components of the UHNW tax stack in 2026, the specific strategies that move the needle at this wealth level, and the coordination failures that cause expensive mistakes.

The UHNW tax stack in 2026

Most HNW planning focuses on the 37% top ordinary income rate. At the UHNW level, the more important number is the effective marginal rate across all layers. For a married-filing-jointly household with $30M+ in investable assets, that typically looks like this:

The practical implication: a UHNW investor recognizing $1M of long-term capital gains while already in the top bracket pays not 20% but 23.8% (LTCG + NIIT). If that same dollar of gain is ordinary income (short-term, hedge fund allocation, or partnership ordinary income), the rate is 40.8% (37% + 3.8% NIIT). Character of income matters enormously.

Capital gains: the 23.8% combined rate

Every portfolio decision a UHNW investor makes is implicitly a tax decision. The gap between 23.8% (long-term capital gains) and 40.8% (ordinary income) is 17 percentage points — on a $10M gain, that's $1.7M in additional federal tax for wrong income character.

Timing and harvesting at scale. Direct indexing — owning individual securities inside an S&P 500 or factor portfolio rather than a fund — is the primary tool for generating tax losses without changing economic exposure. At $30M+ of taxable assets, systematic tax-loss harvesting through a separately managed account (SMA) can generate 1–2% of annual tax alpha. Over a 20-year horizon at this scale, that compounds materially. See our direct indexing guide for the mechanics.

Concentrated position management. A founder post-exit with $40M of low-basis stock faces a different problem: how to diversify without triggering 23.8% on the entire gain. Exchange funds, prepaid variable forwards, charitable remainder trusts, and qualified small business stock exclusion (QSBS) under § 1202 all address this — with very different tax, control, and liquidity tradeoffs. See our concentrated stock guide for a full comparison.

§ 1014 step-up and hold-to-death planning. For assets that will be inherited, the step-up in basis at death eliminates accrued capital gains entirely. At $30M+ estates, deciding which assets to sell during life (and pay gains on) versus hold to death (and step up) is a meaningful planning decision — particularly for highly appreciated real estate or family business interests that heirs can operate without selling.

AMT at $30M+: OBBBA's changes

The Alternative Minimum Tax was originally designed to catch high-income taxpayers who sheltered too much income. At the UHNW level, AMT exposure is real — particularly for investors with large incentive stock option exercises, significant private activity bond interest, or accelerated depreciation from real estate or alternative investments.

The One Big Beautiful Bill Act (OBBBA, July 2025) reset the AMT phaseout threshold to $1,000,000 of AMTI for married-filing-jointly filers, with a 50% phaseout rate.⁴ This means:

• 2026 AMT exemption: $140,200 (MFJ)
• Phaseout begins at $1,000,000 of AMTI
• Exemption completely phased out at approximately $1,280,400 of AMTI
• Above that point: straight 26%/28% AMT on all AMTI

For most UHNW investors, AMT is an ISO exercise problem or a depreciation-preference problem — not a routine annual occurrence. The planning question is whether to spread ISO exercises across years (staying below the phaseout start) or bunch them in a single year after modeling full AMT exposure. This requires a coordinated model with your CPA before any exercise, not after.

IRMAA: the stealth Medicare tax on UHNW households

Medicare Part B and Part D premiums are income-tested. Above $218,000 of MAGI (2026, married filing jointly), you pay surcharges — called IRMAA (Income-Related Monthly Adjustment Amount) — on top of the standard premium of $202.90/month per person.⁵

The surcharges increase in tiers, with a maximum total Part B premium of $689.90/month per person at the highest income tier. For a married couple, that's up to $16,557/year in Medicare premiums above the base — not a trivial number, but the planning dimension is what's often missed:

The IRMAA appeal process (Life-Changing Event) allows you to use a more recent year's income if you experienced a qualifying event (retirement, death of spouse, loss of income-producing property). But prevention — timing large income events with awareness of the lookback — is simpler than remediation.

State income tax arbitrage

Nine states have no income tax: Alaska, Florida, Nevada, New Hampshire (on earned income only), South Dakota, Tennessee, Texas, Washington (no general income tax, but capital gains tax applies above $262,000 starting 2022), and Wyoming. For a UHNW investor with $2M/year in portfolio income and a flexible residence situation, a domicile change from California (13.3% top rate) or New York (10.9%) to Florida or Nevada saves $200,000–$260,000 per year in state income tax — compounding indefinitely.

Domicile changes at the UHNW level require more than updating a driver's license. States with high income tax (California in particular) aggressively audit high-income taxpayers who claim to have moved. Maintaining adequate ties to the new state — days present, driver's license, voter registration, bank accounts, primary residence, social and professional connections — and documenting them is essential. A CPA experienced with UHNW domicile transitions, combined with a real estate attorney in the new state, typically manages the process.

California's 13.3% rate applies to all income types — ordinary income, long-term capital gains, and qualified dividends are all taxed at ordinary rates. A UHNW California resident pays not 23.8% on long-term gains but 37.1% (federal 23.8% + CA 13.3%). On a $10M gain, the difference vs. a Florida resident is $1.33M — in a single year.

Charitable bunching and DAF timing

The 2026 standard deduction for married-filing-jointly is $32,200.¹ At the UHNW level, itemized deductions — primarily state and local tax (capped at $10,000), mortgage interest, and charitable contributions — almost always exceed the standard deduction. The planning question is not whether to itemize but how to maximize itemized deductions in years with unusually high income.

A Donor Advised Fund (DAF) allows you to make a large deductible contribution in a single year — reducing taxable income in the high-income year — while distributing grants to operating charities over multiple subsequent years. A UHNW investor who contributes $2M of appreciated stock to a DAF in the year of a major liquidity event accomplishes three things simultaneously:

1. Deducts $2M of fair-market value (not cost basis) against the year's elevated ordinary income
2. Eliminates the capital gain on the appreciated stock entirely — neither donor nor DAF pays tax on the gain
3. Creates a charitable endowment that can fund grants indefinitely, without urgency around timing

The AGI limitation for cash DAF contributions is 60%; for appreciated long-term property, 30%. A $30M+ investor running a concentrated exit may hit the 30% limit and need to spread contributions across years or use a CRT for larger positions. See our philanthropic vehicles guide for full mechanics.

QBI deduction for pass-through income

The § 199A qualified business income (QBI) deduction — 20% of QBI from pass-through entities — was made permanent by OBBBA, removing the prior 2025 sunset risk.⁶ For UHNW investors with ownership in operating businesses, real estate partnerships, or non-SSTB pass-throughs, this deduction remains valuable.

The 2026 phaseout thresholds for specified service trades or businesses (SSTBs — including financial services, consulting, law, and medicine) are $406,000–$556,000 of taxable income for MFJ. Above $556,000, owners of SSTBs receive no QBI deduction. For non-SSTB businesses (manufacturing, real estate, most technology product companies), the deduction phases into W-2 wage and qualified property tests rather than disappearing — which is why structuring operating businesses as non-SSTB where the business model supports it is worth examining with a CPA.

The QOZ window: 2026–2027 transition

OBBBA permanently extended the Qualified Opportunity Zone program with a new rolling-deferral structure starting January 1, 2027.⁷ This creates a specific planning window in 2026:

• Existing QOZ investors: gains deferred under the original program must be recognized by December 31, 2026 (the prior program's close). These recognized gains are includible in 2026 ordinary income and may be candidates for reinvestment.
• New QOZ investments (2027+): Under the OBBBA structure, investors can defer gains into a Qualified Opportunity Fund (QOF) on a rolling 5-year basis — the deferral period starts at investment, not a fixed calendar date. A 10% basis step-up applies after 5 years.
• Reinvestment opportunity: A UHNW investor with a large capital event in 2026 who invests in a QOF can defer and partially reduce the gain — and under the new permanent program, this window no longer has an expiration date.

QOZ investments are illiquid, require the QOF to deploy into designated census tracts, and carry substantial business risk. They are a tax deferral tool, not a return-enhancement tool. Evaluate the underlying investment first; use the QOZ benefit as a secondary filter.

Trust income compression trap

Irrevocable trusts reach the top 37% federal income tax bracket at just $16,000 of taxable income.⁸ For comparison, a married-filing-jointly individual doesn't hit 37% until $768,700. This compression means that income-generating assets parked inside a trust — interest, dividends, short-term gains — face the highest federal rate almost immediately.

Strategies to manage trust income taxation:

• Grantor trust elections: Intentionally Defective Grantor Trusts (IDGTs) are taxed to the grantor, not the trust — effectively allowing the grantor to pay trust income taxes personally, which itself is a tax-free gift to the trust beneficiaries. The income avoids trust-level compression entirely.
• Distribute income to beneficiaries: Trust distributions carry out distributable net income (DNI) to the beneficiary, shifting taxation to the beneficiary's rate — often lower than the trust's compressed rate, especially for beneficiaries in lower brackets.
• Asset selection inside trusts: Growth-oriented assets (low-dividend stocks, non-dividend-paying PE interests) accumulate without annual income recognition inside a trust, avoiding compression until distributions or sales.

The coordination failure here is placing income-generating assets — REITs, bonds, high-yield private credit — inside irrevocable trusts without modeling the tax drag. See our UHNW estate planning guide for how trust structure interacts with tax efficiency.

Why coordination is the hardest part

Every item in this guide requires inputs from multiple advisors: the investment advisor manages portfolio income character; the CPA models the annual tax stack; the estate attorney owns trust design; the insurance advisor manages PPLI or premium-financed life inside the estate plan. Each can optimize within their lane — and still leave significant money on the table if they don't cross-communicate.

Common coordination failures at the UHNW level:

• Investment advisor harvests capital losses in December; CPA needed those losses in Q1 to offset a gain already recognized — now they carry forward instead of offsetting.
• Estate attorney moves appreciated stock into a trust; no one modeled the trust-level income compression on the dividend stream that results.
• CPA recommends a large Roth conversion in Year 1 post-retirement; no one flagged the 2-year IRMAA lookback — premiums spike two years later.
• Family exits a business in Q4; no DAF contribution was made pre-close despite appreciated company stock being a deductible contribution opportunity.

Fee-only advisors with UHNW experience serve as the coordination point — not because they're better at any individual lane than a specialist, but because they hold the full picture and can see across the stack before any single decision is made. This is a different skill set from portfolio management, and the value compounds with complexity.

Sources

1. IRS — 2026 inflation adjustments including OBBBA: top ordinary rate 37% applies above $768,700 MFJ; standard deduction $32,200 MFJ. Values verified April 2026.
2. Tax Foundation — 2026 federal tax brackets: 20% long-term capital gains rate applies above $613,700 MFJ. Per IRS 2026 inflation adjustments.
3. IRS Topic 559 — Net Investment Income Tax: 3.8% on lesser of net investment income or MAGI above $250,000 (MFJ). Threshold is NOT indexed for inflation (fixed since 2013 under § 1411).
4. IRS — 2026 AMT: exemption $140,200 MFJ; phaseout begins at $1,000,000 AMTI (MFJ) at 50% rate per OBBBA. AMT rates 26%/28%; 28% rate applies above $244,500 of AMTI.
5. Kiplinger — 2026 IRMAA thresholds and Medicare Part B premiums: standard premium $202.90/month; IRMAA applies above $218,000 MAGI (MFJ); maximum Part B premium $689.90/month. Based on 2024 income (2-year lookback).
6. Tax Foundation — OBBBA permanently extended § 199A QBI deduction. 2026 SSTB phaseout: $406,000–$556,000 MFJ (indexed). Non-SSTB businesses above threshold subject to W-2/property tests.
7. Greenberg Traurig — OBBBA permanently extended QOZ program with rolling 5-year deferral effective January 1, 2027. Original program closes December 31, 2026; existing deferrals must be recognized. 10% basis step-up after 5-year hold.
8. Tax Foundation — 2026 trust and estate income tax brackets: 37% rate applies at $16,000 of taxable income. Individual 37% bracket begins at $768,700+ MFJ — a 48× compression ratio for trust income.

Tax law and regulatory guidance change frequently. All figures reflect 2026 rules as of April 2026. OBBBA implementing regulations were still being issued; consult IRS guidance and a qualified CPA for final rules on affected provisions before acting.