Last Updated: April 2026
High income earners face a tax environment that is fundamentally different from the standard W-2 worker. Above $200,000 single or $250,000 married, a parallel set of surtaxes, phase-outs, and limitations activates: the 3.8% Net Investment Income Tax (NIIT), the 0.9% Additional Medicare Tax, AMT exposure on certain deductions, and the complete phase-out of traditional IRA deductibility and direct Roth IRA contributions. The $10,000 SALT deduction cap — introduced by the Tax Cuts and Jobs Act in 2017 and still in place for 2026 — disproportionately hurts high earners in high-tax states like California, New York, New Jersey, and Illinois, where state income tax alone can exceed $30,000 at $300K income.
This guide covers the key tax reduction strategies available to high income earners in 2026: NIIT planning, AMT exposure, the backdoor and mega backdoor Roth contributions that bypass income limits, the QBI deduction for business owners, Pass-Through Entity Tax elections that work around the SALT cap, and the economics of state arbitrage. All dollar figures use 2024 IRS parameters (the latest finalized figures at time of writing), with 2026 inflation adjustments noted where available.
The 3.8% Net Investment Income Tax was introduced in 2013 to help fund the Affordable Care Act and applies to the lesser of: (1) your net investment income; or (2) the amount by which your Modified AGI exceeds $200,000 (single) or $250,000 (married filing jointly). Unlike income tax brackets, these thresholds are not inflation-adjusted, meaning an increasing share of upper-middle earners gets captured each year.
Net investment income includes: interest, dividends, capital gains (including from the sale of a home above the $250K/$500K exclusion), rental and royalty income, passive activity income, and income from trading in financial instruments or commodities. It does NOT include wages, self-employment income, active business income, Social Security benefits, distributions from qualified retirement plans, or tax-exempt interest.
Key strategies to reduce NIIT exposure include: (1) Municipal bonds — tax-exempt interest from muni bonds is excluded from NIIT. At a 3.8% NIIT plus 20% long-term capital gains rate, a muni bond yielding 4% tax-free is equivalent to a taxable yield of ~7% for high earners in states without additional tax; (2) Qualified Opportunity Zone investments — gains reinvested in QOZs are deferred and potential gains on the QOZ investment itself may be excluded from NIIT after 10 years; (3) Real estate professional status — qualifying as a real estate professional (750 hours in real property trades, more than any other trade or business) converts rental income from passive to active, removing it from the NIIT calculation; (4) Retirement account contributions — maximizing pre-tax 401(k), SEP-IRA, or defined benefit plan contributions reduces MAGI toward the NIIT threshold.
Separate from NIIT, an additional 0.9% Medicare Tax applies to wages and self-employment income above $200,000 (single) / $250,000 (married). Unlike NIIT, this applies to earned income rather than investment income. For married couples, note that the threshold is $250,000 of combined wages — two spouses each earning $150,000 may owe the 0.9% on $50,000 of income if withheld incorrectly. Request additional withholding on Form W-4 to avoid an underpayment penalty if both spouses work.
The $10,000 SALT deduction cap introduced by the Tax Cuts and Jobs Act of 2017 hits high earners in California ($13.3% top rate), New York (10.9% top rate), New Jersey (10.75%), and other high-tax states particularly hard. A California resident earning $500,000 might owe $40,000+ in state income tax but can deduct only $10,000 federally — effectively losing a $30,000+ deduction worth $11,000+ in federal tax savings at the 37% rate.
As of 2024, more than 35 states have enacted Pass-Through Entity Tax (PTET) regimes, also called entity-level taxes or workarounds. The mechanism: instead of owners deducting their share of state tax on their individual returns (where the $10K cap applies), the partnership or S-corporation pays state income tax at the entity level. Entity-level state taxes are deductible as ordinary business expenses on the federal return, entirely bypassing the $10,000 SALT cap. The individual owners receive a credit on their state return for the state tax the entity paid on their behalf.
States with active PTET workarounds as of 2024 include: California (AB 150; elective PTE tax at 9.3% base rate); New York (rate matches owner’s tax rate; effective for partnerships and S-corps); New Jersey (10.9% on income above $1M); Illinois (4.95%); Massachusetts (5%). The federal treatment is clear following IRS Notice 2020-75, which confirmed that the deduction is allowed at the entity level. PTET elections typically must be made annually before the tax year ends or on the original return — retroactive elections are permitted in some states but not all.
PTET elections benefit partners and S-corp shareholders in high-tax states with pass-through income above the $10,000 SALT cap threshold. Example: a New York S-corp shareholder with $600,000 in pass-through income who pays $55,000 in New York state tax. Previously: only $10,000 federally deductible. With PTET election: entire $55,000 deducted at entity level, saving approximately $16,650 in federal tax (at 37% rate) that was previously unavailable. PTET elections are generally not beneficial for C-corporations (which have their own entity-level taxation) or for pass-through owners in states without a PTET regime.
High income earners are phased out of direct Roth IRA contributions, but two alternative strategies — the backdoor Roth and the mega backdoor Roth — allow substantial Roth contributions at any income level. Roth accounts offer permanent tax-free growth and distributions, no required minimum distributions during the owner’s lifetime, and tax-free inheritance for beneficiaries (subject to the 10-year rule for non-spouse heirs).
The backdoor Roth IRA is a two-step process: (1) Make a non-deductible contribution to a traditional IRA (up to $7,000 in 2024; $8,000 if age 50+). No income limit applies to non-deductible traditional IRA contributions. (2) Convert the traditional IRA to a Roth IRA. If the traditional IRA contains only the non-deductible contribution with minimal earnings (ideally converted immediately), the conversion is essentially tax-free.
The pro-rata rule requires you to treat ALL traditional, SEP, and SIMPLE IRA balances as the denominator when calculating the taxable portion of a Roth conversion. If you have $93,000 in a pre-tax rollover IRA and $7,000 in a new non-deductible traditional IRA, and you convert only the $7,000 non-deductible contribution, only 7% (7,000 / 100,000) of the conversion is tax-free. The remaining 93% is taxable. Solution: roll all pre-tax IRA balances into your current employer’s 401(k) plan before making backdoor Roth contributions. Many 401(k) plans accept rollovers from traditional IRAs. After the rollover, the pro-rata calculation excludes 401(k) balances and the full $7,000 conversion is tax-free.
The mega backdoor Roth leverages the gap between the $23,000 employee pre-tax 401(k) limit and the $69,000 total 401(k) limit (2024). This gap — approximately $43,500 after typical employer matching — can be filled with after-tax (non-Roth) contributions if your plan allows them. These after-tax contributions can then be converted to Roth via in-plan Roth conversion (no plan distribution required) or in-service withdrawal and external Roth conversion. Requirements: your 401(k) plan must explicitly permit after-tax contributions AND in-plan Roth conversions or in-service distributions. Many large employer plans do; many small business plans do not. If you own your business, you can establish a Solo 401(k) or amend your plan document to allow these provisions.
The Section 199A deduction allows eligible pass-through business owners (sole proprietors, partnerships, S-corps, LLCs) to deduct 20% of qualified business income (QBI) from federal taxable income. At $300K+ income, the deduction becomes more complex. Above the taxable income threshold of $383,900 (MFJ) / $191,950 (single), the deduction is limited to the greater of: (1) 50% of W-2 wages paid by the business; or (2) 25% of W-2 wages plus 2.5% of unadjusted basis of qualified depreciable property. For service businesses in SSTBs (law, health, consulting, financial services, athletics, performing arts, brokerage services), the deduction phases out entirely between $383,900–$483,900 (MFJ) / $191,950–$241,950 (single) in 2024. Non-SSTB business owners can retain the full deduction at any income level subject to the W-2 wage limitation. Strategy: increase W-2 wages paid by the business (which also increases payroll tax cost) to maximize the deduction; consider adding qualified property through Section 179 or bonus depreciation to boost the 2.5% property-based limit.
State income tax represents one of the largest controllable tax variables for high income earners. Unlike federal taxes, state income taxes are largely discretionary — you choose where you live. For a California resident earning $500,000, the difference in state income tax between California (13.3% top rate) and Texas (0%) is approximately $45,000–$55,000 per year. That is a permanent, after-tax annual raise equivalent to working one to two months for free to pay state taxes.
Nine states currently impose no state income tax on wages and salaries: Alaska, Florida, Nevada, New Hampshire (tax on interest and dividends only, being phased out), South Dakota, Tennessee, Texas, Washington (no income tax on wages; 7% on long-term capital gains above $250K), and Wyoming. Among these, Florida and Texas are the most popular destinations for high-income migrants from California and New York given their size, infrastructure, and job markets.
Moving for tax purposes requires genuinely establishing legal domicile in the new state — not merely obtaining a new driver’s license. Key steps to establish domicile: (1) Sell or discontinue renting out your primary residence in the old state, or convert it to a true secondary/investment property; (2) Establish a new permanent home — purchase or sign a long-term lease in the new state; (3) Update voter registration, driver’s license, vehicle registration, and professional licenses to the new state; (4) Move financial accounts and estate planning documents (will, trust) to reflect the new state; (5) Spend the majority of your time in the new state. Many high-tax states — particularly California and New York — aggressively audit domicile changes. California’s Franchise Tax Board (FTB) uses a “closest connections” test and may claim continuing California tax residency if significant California ties remain (business interests, family, property). Maintain contemporaneous records of days spent in each state.
If you hold appreciated investments, stock options (ISOs or NSOs), or are planning a business sale, the state of residency at the time of the taxable event determines state capital gains tax. California taxes long-term capital gains as ordinary income at up to 13.3%. Moving to Florida before a liquidity event — an IPO, acquisition, or major stock sale — eliminates California tax on those gains entirely. This requires establishing genuine domicile in Florida before the sale, not simply spending a few months there. Work with a tax attorney in both states before any major liquidity event; California will scrutinize the timing and challenge domicile changes that appear motivated purely by the approaching transaction.
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Get Expert Tax Help →The 3.8% Net Investment Income Tax (NIIT) applies when your Modified AGI exceeds $200,000 (single filers) or $250,000 (married filing jointly). It applies to the lesser of your net investment income or the amount by which your MAGI exceeds the threshold. Investment income covered includes: interest, dividends, capital gains (including real estate sale profits above the primary home exclusion), rental income (unless you qualify as a real estate professional), royalties, and passive activity income. Wages, active business income, and qualified retirement plan distributions are NOT subject to NIIT.
Yes. As of 2026, the backdoor Roth IRA conversion remains legal and widely used. Despite periodic congressional proposals to eliminate it (notably in the 2021 Build Back Better legislation that did not pass), the strategy has not been restricted. The key requirement is the pro-rata rule: if you have other pre-tax IRA balances (traditional, SEP, SIMPLE), a portion of each conversion will be taxable proportional to the pre-tax amount. Solution: roll pre-tax IRA balances into a 401(k) before making backdoor Roth contributions to make the conversion tax-free.
Yes, sole S-corp shareholders can elect PTET in states that permit it, and most state PTET regimes allow elections regardless of the number of shareholders. The S-corp pays state tax at the entity level, deducts it as a federal business expense (bypassing the $10K SALT cap), and you receive a state tax credit on your personal return. The net effect is that you pay the same state tax amount but gain a full federal deduction for it. PTET elections are most valuable in states with high income tax rates — California, New York, New Jersey — and for S-corp shareholders with pass-through income well above $10,000 in state tax.
At $400,000 in earned income, California state income tax is approximately $39,000–$43,000 (at the 9.3%–12.3% marginal rates). Florida has no state income tax. Annual savings: approximately $39,000–$43,000 per year. Over 10 years (with no income growth), that is $390,000–$430,000 in cumulative state tax savings. At $600,000 income (where California’s 13.3% rate on income above $1M and the 1% Mental Health Services Tax above $1M both apply), savings grow further. Factor in: California’s 13.3% top rate on capital gains and the potential state tax on a business sale or stock options can make relocation even more valuable near liquidity events. Always weigh against cost-of-living differences and establish genuine domicile before any major taxable event.