High Net Worth Tax Planning Strategies: A 2026 Playbook for Families With Real Money to Protect

Standard retirement-account advice is fine when your net worth is under $1 million. Above that, the dollars are too small to matter relative to the planning opportunities sitting on the table. The high net worth tax planning strategies that actually move the needle are the ones that touch capital structure, entity choice, and estate transfer — not the ones that shave a few thousand off the W-2.

Start with Section 1202 QSBS. If you’re a founder, an early employee with stock, or an investor in a qualifying C-corporation, planning around the $10 million (or 10x basis) federal tax exclusion can be worth seven or eight figures on a single exit. The qualification rules are technical and the five-year hold is unforgiving, so the planning needs to happen at incorporation, at every funding round, and again as the exit approaches. Done well, an entire founder exit can come out federally tax-free.

Next, look at the estate transfer side. The lifetime exemption sitting at roughly $13.99 million per person in 2025 (made permanent through 2034 by the One Big Beautiful Bill Act), absent legislative action. That’s $14 million of joint transfer capacity for a married couple that disappears overnight. High net worth tax planning strategies built around the 2025 deadline — SLATs, IDGTs, gift-and-freeze structures — capture that window before it closes. For a family worth $30 million, the value of using the exemption now versus losing access to half of it is roughly $2.8 million in saved estate tax at the second death.

Charitable structures matter more than the income tax deduction suggests. A Charitable Lead Annuity Trust funded during a low-7520-rate environment can transfer significant wealth to heirs at near-zero gift tax cost. A Charitable Remainder Trust funded with appreciated stock turns a concentrated low-basis position into a diversified income stream without paying capital gains tax. These aren’t deduction plays — they’re wealth transfer plays where the charity is also a beneficiary.

State residency is the simplest big-dollar move and the one most clients refuse to take seriously until they see the math. A New York City taxpayer earning $3 million a year pays roughly $450,000 annually in combined state and city income tax. Move to Florida correctly — meaning a real domicile change with the documentation to defend it — and that disappears. Over 20 years, that’s $9 million in saved tax, before compounding.

Roth conversions during low-income windows are quiet but powerful. Couples between retirement and Social Security claiming, or in a year when business income dips, can convert hundreds of thousands of dollars at 22% or 24% federal rates that would otherwise be taxed at 32%–37% when RMDs hit at age 73.

Asset location across taxable, traditional, and Roth accounts is the boring one that rarely gets discussed but routinely saves $30,000–$80,000 a year on portfolios above $10 million. Tax-inefficient assets (REITs, taxable bonds, high-turnover funds) go in tax-deferred accounts. Tax-efficient assets (ETFs, individual stocks, munis) go in taxable. Highest-expected-return assets go in Roth. No change to asset allocation, significant change to after-tax return.

What unifies these high net worth tax planning strategies is that they all require multi-year planning horizons, coordination between professionals, and a willingness to make decisions before they’re forced. The clients who get the biggest results are the ones who started talking about the 2025 exemption sunset in 2022. The clients who lose the most are the ones who started thinking about it in October 2025.

This is the single most consequential estate planning event of the decade, and it changes the priority order of high net worth tax planning strategies for any family with more than roughly $7 million per spouse in assets. The 2017 Tax Cuts and Jobs Act roughly doubled the unified credit, bringing the lifetime exemption to $13.99 million per person in 2025. That provision sunsets December 31, 2025. On January 1, 2026, the exemption resets to roughly $7 million per person (the pre-TCJA amount, indexed for inflation), and every dollar transferred above that gets taxed at 40%.

The IRS published final “anti-clawback” regulations in 2019 that confirmed gifts made under the higher exemption won’t be retroactively taxed when the exemption falls. In plain English: gifts made before the sunset lock in the higher exemption. Gifts made after the sunset get the lower amount. There’s no do-over.

For a family worth $15 million, the highest-priority high net worth tax planning strategies right now are the ones that move assets out of the taxable estate before the sunset. The most common structure is the Spousal Lifetime Access Trust (SLAT), where one spouse gifts assets to an irrevocable trust for the benefit of the other spouse and the children. The gift uses lifetime exemption, the assets and future appreciation are out of the gifting spouse’s estate, and the receiving spouse retains indirect access through marital distributions. Couples typically build two SLATs — one funded by each spouse, with carefully non-reciprocal terms — to roughly double the protected amount.

For families with concentrated, fast-appreciating assets (a business, a private equity stake, real estate in a hot market), the Intentionally Defective Grantor Trust (IDGT) is often a better tool than an outright gift. The grantor sells appreciated assets to the IDGT in exchange for a promissory note, freezing the value in the grantor’s estate at the note amount. Future appreciation occurs inside the trust, outside the estate. The grantor pays income tax on trust earnings, which is itself a tax-free gift to the trust (the trust grows faster because the grantor is effectively prepaying its tax bill).

Grantor Retained Annuity Trusts (GRATs) work differently — they don’t use exemption at all when structured as “zeroed-out” GRATs. The grantor transfers assets, retains an annuity stream equal to the original value plus the Section 7520 hurdle rate, and any growth above the hurdle passes to beneficiaries gift-tax-free. In a low-rate environment, GRATs become extremely efficient. Rolling two-year GRATs minimize the mortality risk that the grantor will die during the term and pull assets back into the estate.

The high net worth tax planning strategies built around the 2025 sunset deadline are time-sensitive in a way most planning is not. Quality trust counsel — the kind that drafts custom irrevocable trusts that will survive IRS scrutiny — is already booked solid through Q4 2025 in most major markets. Appraisals for closely-held business interests, real estate, and concentrated equity positions can take 60–90 days. Funding mechanics (transferring stock, retitling real estate, executing promissory notes) take additional time. A family starting in October 2025 will struggle to complete a major gifting strategy by December 31.

What we’re advising clients to do now: get a current balance sheet on paper, identify which assets to gift and which to keep, retain trust counsel and an appraiser, and start the drafting and funding process. The conversation with the spouse, the conversation with the children, the philosophical discussion about how much is enough — those need to happen first, because they take longer than the legal work.

The counterintuitive point: not gifting can be the right answer. A family worth $8 million doesn’t need to use exemption because they won’t have a taxable estate either way. A family worth $200 million has already used exemption and is now in pure 40% transfer-tax planning. The sunset matters most for families between $10 million and $50 million — the band where the difference between current and future exemption levels actually changes the tax outcome.

A business sale is the single biggest tax event most owners ever face, and the high net worth tax planning strategies that apply look nothing like routine annual tax planning. The decisions made 2–5 years before the sale routinely matter more than every decision made during the year of sale combined. By the time the term sheet shows up, most of the planning levers are already locked.

The first question is structural: C-corp or pass-through? For an owner with a stake in a qualifying C-corp held more than five years, Section 1202 QSBS can exclude up to $10 million of gain (or 10x basis) from federal tax. For a pass-through (S-corp, LLC, partnership), there’s no QSBS but there are other tools — the Section 199A deduction during ownership, the ability to allocate purchase price to assets that get capital gains treatment (Section 1231 assets, intangibles, goodwill), and installment sale treatment under Section 453 in certain structures.

If the business is in a QSBS-eligible industry (manufacturing, tech, retail, most operating businesses), and the owner can plan early enough, converting to C-corp status and waiting out the five-year holding period before the sale can transform the tax outcome. Watch the gross asset test: the corporation must have under $50 million in aggregate gross assets immediately after stock issuance to qualify. Once the business crosses that threshold, future stock issuances no longer qualify, but the previously-issued QSBS stock retains its status.

High net worth tax planning strategies for QSBS owners also include stacking — distributing stock to multiple taxpayers (spouses, irrevocable non-grantor trusts for children) before the sale, each of whom gets a separate $10 million exclusion. Done correctly, a $50 million exit can come out fully QSBS-eligible across five $10 million exclusions. Done incorrectly — too close to the sale, with insufficient business purpose for the transfers — the IRS will collapse the structure and tax the entire gain at the original owner level.

For pass-through exits, the strategy is different. Installment sales let the owner spread gain across multiple years, which keeps marginal rates lower and avoids the bunching effect that pushes everything into the top federal bracket plus NIIT. The trade-off is buyer credit risk — installment notes are only worth their tax savings if the buyer actually pays.

Charitable Remainder Trusts (CRTs) work well for owners who don’t need all the proceeds for personal use. Contribute appreciated stock to the CRT before the sale, the CRT sells without paying capital gains tax, and the owner receives an income stream for life or a term of years. The remainder goes to charity. The economics work especially well when the owner has charitable intent anyway and wants to avoid the concentrated tax hit of a lump-sum sale.

Opportunity zone reinvestment under Section 1400Z lets owners defer capital gains by reinvesting into qualifying funds within 180 days of the sale. Hold the QOF for 10 years and any appreciation inside the fund comes out tax-free. The deferral is until 2026 (or earlier QOF exit), but the 10-year tax-free growth is the real prize.

State planning matters enormously for exits. A New York business owner facing a $20 million sale who can establish bona fide Florida residency before closing saves roughly $2.2 million in New York State and City income tax. The residency change has to be real and defensible — New York audits residency changes around major liquidity events with particular aggression. Sale-year residency planning typically needs to start 12–24 months ahead of closing.

The high net worth tax planning strategies that pull the most value out of a business sale are the ones that get the entity structure right years in advance, allocate purchase price intentionally during negotiations, and coordinate with estate planning so that proceeds end up in trust structures that minimize the next round of tax at death. We’ve seen exits where the owner saved $5–8 million by doing this work in advance. We’ve seen others where the owner paid an additional $3–5 million in tax because nobody started planning until the LOI was signed.

The Net Investment Income Tax (NIIT) under Section 1411 and the Additional Medicare Tax under Section 1401 are technically surtaxes, but for HNW households they function as just another layer of permanent tax on top of regular income tax. The NIIT is 3.8% on investment income above $250,000 MFJ. The Additional Medicare Tax is 0.9% on wages and self-employment income above the same threshold. Both have been in place since 2013 and neither has been adjusted for inflation, so more households cross the thresholds every year through bracket creep alone.

The high net worth tax planning strategies that actually reduce these surtaxes work differently than strategies that target regular income tax, because the surtaxes apply to different income categories. NIIT hits passive income — interest, dividends, capital gains, rental income, royalties, passive business income. The Additional Medicare Tax hits active income — wages and self-employment earnings. Strategies that shift income from one category to the other can change which surtax applies, but rarely eliminate both.

Material participation is the cleanest way to attack NIIT on business income. Income from a trade or business in which the taxpayer materially participates is excluded from NIIT under Section 1411. An LLC owner who’s actively involved in the business — passing one of the seven IRS material participation tests under the Section 469 regulations — keeps that income out of the NIIT base. A passive investor in the same LLC pays NIIT on their share. Tracking participation hours, documenting the work, and structuring agreements to support material participation status can shift hundreds of thousands of dollars out of the NIIT zone.

For investment income, the goal is to reduce the gross amount subject to NIIT rather than the rate. Municipal bond interest is excluded from NIIT entirely (it’s not investment income for NIIT purposes — it’s tax-exempt). Replacing $500,000 of taxable bond holdings with comparable munis can drop the NIIT exposure by $19,000 a year, plus the federal tax savings.

Roth conversions, paradoxically, can increase NIIT in the conversion year by pushing AGI higher, even though the converted amount itself isn’t subject to NIIT (it’s ordinary income, not investment income). Time conversions for years when investment income is naturally lower or use them to fill brackets without crossing the NIIT threshold.

Qualified Charitable Distributions from IRAs are particularly useful for NIIT-conscious retirees. The QCD counts toward the RMD but doesn’t increase AGI. Lower AGI means less investment income falls above the NIIT threshold. For someone with $300,000 of RMDs and $200,000 of taxable investment income, redirecting $108,000 of the RMD via QCD to charity can keep modified AGI below the threshold for tens of thousands of dollars of investment income that would otherwise be hit.

For the Additional Medicare Tax on wages, the high net worth tax planning strategies are narrower. Self-employed taxpayers can reduce SE income by choosing an S-corp structure and paying themselves a reasonable salary, with the rest flowing through as K-1 income that’s not subject to SE tax or Additional Medicare Tax. The IRS scrutinizes the “reasonable compensation” question — too low a salary triggers an audit — but a defensible split between W-2 wages and K-1 distributions can save 3.8% (SE Medicare plus Additional Medicare) on the distribution portion.

Income deferral via non-qualified deferred compensation plans (Section 409A) can push wages into later years when the executive may be retired and below the Additional Medicare threshold. The catch: the deferral elections lock in years ahead of the income, and the plan documentation needs to be airtight to avoid the 20% penalty.

What we tell clients about NIIT and Additional Medicare specifically: don’t chase the 3.8% and 0.9% in isolation. The clean high net worth tax planning strategies that reduce these surtaxes are usually the same ones that reduce regular income tax — material participation, charitable structures, tax-aware asset location, S-corp wage planning. The surtaxes are a tax on bad coordination, and good coordination handles them automatically.

For families above roughly $10 million in net worth, charitable giving stops being a deduction game and becomes a wealth transfer game. The income tax deduction is helpful — capped at 30% of AGI for appreciated property under Section 170(b), per IRS Publication 526 — but it’s not the main reason these structures exist. The real value of charitable high net worth tax planning strategies is what they let you do that direct gifts to family can’t.

Donor-advised funds are the entry point. Sponsored by community foundations or national platforms (Fidelity Charitable, Schwab Charitable, Vanguard Charitable), DAFs let you contribute appreciated assets, take the full fair-market-value deduction in the year of contribution, avoid capital gains tax on the appreciation, and then recommend grants out over time. The deduction lands when you need it (typically a high-income year — a bonus, a business sale, an equity vesting event). The charitable distributions can happen at your own pace.

The bunching strategy compounds the value. Instead of giving $50,000 a year for ten years and possibly not itemizing in some years, contribute $500,000 to a DAF in one year, take the full deduction against high income, then recommend $50,000 annual grants over the next decade. The charities still get funded annually. You get a much larger deduction concentrated in your highest-bracket year.

Charitable Remainder Trusts (CRTs) work for clients with concentrated, low-basis positions — a single stock that’s appreciated 10x, a real estate property bought decades ago, a business interest that’s hard to diversify. Contribute the asset to the CRT, get a partial deduction based on the present value of the remainder interest to charity, the CRT sells the asset without paying capital gains tax, and the trust pays an income stream to you (or another beneficiary) for life or a term of years. The remainder goes to charity. The math works because the CRT is itself tax-exempt — it gets to reinvest the full sale proceeds and distribute over time without the upfront tax drag.

Charitable Lead Annuity Trusts (CLATs) flip the order. The charity gets the income stream during the trust term, and the remainder passes to heirs at the end. If the trust’s investments grow faster than the Section 7520 hurdle rate set at funding, the excess growth passes to heirs effectively gift-tax-free. CLATs are the secret weapon of estate planning in low-interest-rate environments — they let wealth pass to the next generation with the charity earning a meaningful contribution along the way.

For older clients, Qualified Charitable Distributions from IRAs are the highest-ROI charitable tool. Once you reach age 70.5, you can direct up to $108,000 (2025 limit) per year directly from a traditional IRA to a qualifying charity. The distribution counts toward your RMD but doesn’t show up in AGI. That lower AGI flows through to lower Medicare premiums (IRMAA brackets), lower NIIT exposure on other investment income, and potentially keeping you below thresholds that trigger other tax provisions.

Private foundations make sense once charitable assets exceed roughly $10 million and the family wants long-term control over the charitable mission. The trade-offs are real — 5% annual distribution requirement, excise tax on net investment income, self-dealing rules that restrict transactions between the foundation and family members. For families committed to multi-generational philanthropy and willing to handle the operational burden, foundations work. For families that mostly want flexibility and simplicity, DAFs are usually better.

The high net worth tax planning strategies that integrate charitable giving most effectively treat philanthropy as part of the overall capital structure, not as a separate exercise. A family with $50 million might run a DAF for current giving, a CRT funded with concentrated stock at a major liquidity event, a CLAT to transfer wealth to the next generation, and QCDs from IRAs in retirement. Each tool covers a specific scenario. The total tax savings compound, the family’s charitable impact is larger than it would be otherwise, and the next generation receives a financial inheritance plus a philanthropic structure they can continue. That last piece — using charitable structures to teach the next generation about wealth — is the part that doesn’t show up on any tax return but often matters more than the deduction.