High Net Worth Tax Strategies for W-2 Families in California and Washington

By Kevin Luu, Co-Founder and Chief Learning Officer. Reviewed on 2026-09-30.

The high net worth tax strategies that work for a W-2 family are mostly about three things: moving income into accounts the IRS taxes later or never, controlling when and how you sell appreciated stock, and giving to charity and to your children in the most tax-efficient form. For a household earning $750,000 to $3 million in California or Washington, the biggest wins usually come from full use of workplace plans, closing the RSU withholding gap, donating shares instead of cash, and front-loading 529s. Exotic shelters rarely belong in the conversation.

This guide uses 2026 federal figures, the latest published California and Washington figures, and a worked example for a $1.05 million household in San Jose, then shows how the same plan changes for a family in Bellevue.

Why most “wealthy family” tax advice misses W-2 households

A lot of what gets written about tax planning for affluent families assumes a business owner who can choose how to pay themselves, buy equipment, or set up a cash balance plan. A physician employed by a hospital system, a scientist at a biotech company, or a senior engineer paid in salary and RSUs has far fewer levers. Wages are taxed when earned, payroll taxes come out every pay period, and RSUs are taxed as wages when the shares are delivered.

That narrows the useful list, but it also makes it clearer. If both parents work for large employers, the moves below cover most of what a CPA and a fee-only adviser would actually do in a typical year. For the broader service view, see our tax management page.

The 2026 rates that set your marginal tax cost

Every strategy below is worth more or less depending on your marginal rate, so start there. These are the figures that matter at this income level.

Two points surprise many families. California has no lower rate for capital gains; a long-term gain is taxed like a paycheck (FTB). And the 2026 federal “sunset” did not happen: the 2025 law (P.L. 119-21) made the current seven brackets permanent, so planning around a scheduled jump in rates is out of date. Federal figures are from IRS Rev. Proc. 2025-32.

Eight strategies that work on W-2 income

1. Fill every pre-tax workplace account first

For 2026 each spouse can defer $24,500 into a 401(k) or 403(b), with an $8,000 catch-up at age 50 or older, or $11,250 for those who turn 60 to 63 in 2026 (IRS Notice 2025-67). Physicians at hospital systems often also have a 457(b), which has its own separate deferral limit. At a 37% federal bracket plus a high California bracket, each pre-tax dollar defers close to half its value in income tax. If you are 50 or older and earned more than $150,000 in FICA wages from that employer in 2025, your 2026 catch-up must go in as Roth.

2. Add the mega backdoor Roth if your plan allows it

The total that can go into a 401(k) from all sources is $72,000 for 2026, not counting catch-ups. If your plan accepts after-tax contributions and lets you convert them to Roth, the room left after your $24,500 and your employer’s match can go in after tax and grow tax-free. With a $12,000 match, that is $35,500 of extra room for 2026. Many large tech and biotech plans offer this; many hospital plans do not. Check the plan document, not a forum post. Our retirement and employee benefits page covers how we review plan features.

3. Use the backdoor Roth IRA for both spouses

Direct Roth IRA contributions phase out for joint filers between $242,000 and $252,000 of MAGI for 2026, so households at this level use a nondeductible traditional IRA contribution of up to $7,500 each, then convert. The catch is the pro-rata rule: if either spouse has pre-tax money in any traditional, SEP or SIMPLE IRA on December 31, part of the conversion is taxable (Form 8606 instructions). Rolling old IRA money into a current 401(k) usually fixes this.

4. Take the HSA and dependent care FSA, and know their California limits

With a qualifying high-deductible plan, a family can put $8,750 into an HSA for 2026 (Rev. Proc. 2025-19). Federally it is deductible going in, grows tax-free, and comes out tax-free for medical costs. California does not recognize HSAs, so contributions and the account’s earnings are taxed by California every year (FTB 540 booklet). The federal benefit is still worth having; just expect a California line item. Our guide to high-deductible health plans for families covers whether the plan itself fits.

The dependent care FSA limit rose to $7,500 per household for 2026 (P.L. 119-21, §70404), if your employer’s plan adopts the higher limit. With children under 12 in daycare, after-school care or summer camp, this is usually money you would spend anyway. California generally does not follow the 2025 federal law, so confirm the state treatment of the extra $2,500 with your CPA.

5. Close the RSU withholding gap before April

RSUs are taxed as wages when shares are delivered, and employers often withhold federal tax at the 22% supplemental rate, rising to 37% only on supplemental wages above $1,000,000 in a year (IRS Pub 15). If your real bracket is 35% or 37%, every vest leaves a balance due. An 83(b) election does not help: it applies to restricted stock and early-exercised options, not RSUs (Treas. Reg. §1.83-3(e)). The fix is quarterly estimated payments or extra W-4 withholding on the other spouse’s paycheck, sized to each vest.

6. Sell appreciated stock on purpose, not by accident

Concentrated employer stock is common in this group. Selling it in planned tranches, harvesting losses elsewhere in a taxable account to offset gains, and holding lots for more than a year before selling all lower the bill. Watch the wash sale rule: a loss is disallowed if you buy substantially identical stock within 30 days before or after the sale (IRS Pub 550). In California the state rate on a gain is the same as on wages, so the federal 20% plus 3.8% NIIT is where timing helps most. For how unrealized gains are treated, see do you pay taxes on a brokerage account if you don’t sell.

7. Give shares, not cash, and bunch your giving

Donating long-held appreciated stock to a charity or a donor-advised fund generally gives a deduction at fair market value (subject to AGI limits) and avoids the capital gain entirely (IRS Pub 526). Two 2026 rules change the math for top-bracket families. First, itemized charitable gifts are deductible only above 0.5% of your contribution base, roughly AGI (P.L. 119-21, §70425). Second, itemized deductions are reduced by 2/37 for taxpayers in the 37% bracket, which caps their value at about 35 cents per dollar (P.L. 119-21, §70111). Bunching several years of giving into one year through a donor-advised fund spreads the floor over more dollars.

8. Move growth to your children early

For 2026, each parent can give $19,000 per child without touching the lifetime exemption, and a 529 can be front-loaded with five years of gifts at once: up to $95,000 per child per parent, or $190,000 per child for a couple, with a Form 709 election (Form 709 instructions). California gives no state deduction for 529 contributions, but growth is free of both federal and California tax when used for qualified higher education. California does not follow the federal rule that lets 529 money pay K-12 tuition, so that use is taxable for California. Custodial (UTMA) accounts are simpler but hit the kiddie tax: a child’s unearned income above $2,700 is taxed at the parents’ rate for 2026. Our guide to UTMA withdrawal tax rules covers the trade-offs.

Worked example: a $1.05 million household in San Jose

Assumptions (hypothetical): married filing jointly, two children ages 4 and 8. Spouse A is an engineer at a large tech company earning $260,000 salary plus $340,000 of RSU vests. Spouse B is an employed physician earning $450,000. Total W-2 wages: $1,050,000. Both are under 50. Family HDHP coverage. California taxable income lands in the 11.3% bracket (2025 schedule, $891,542 to $1,485,906).

Federal AGI after the three pre-tax moves is about $984,750, still in the 37% bracket. That has two side effects worth knowing. The SALT deduction is capped at $10,000 for this family, because the 2026 cap of $40,400 phases down to the $10,000 floor once MAGI passes about $606,333. And the 0.5% charitable floor means the first $4,924 or so of itemized giving produces no deduction.

The RSU line is where many families get caught. If the employer withholds 22% federal on $340,000 of vests, that is $74,800 withheld. At this family’s marginal rates (part of the vest falls in the 35% bracket, part in 37%), the federal tax on the vests is roughly $119,000 to $125,800. The gap of about $44,000 to $51,000 is due by April, and underpayment penalties can apply if quarterly payments did not cover it.

The Child Tax Credit plays no part here. It phases out by $50 per $1,000 of MAGI above $400,000 for joint filers, so a two-child family receives nothing above $488,000.

How the same plan changes in Washington

Move the same family to Bellevue with Spouse A at a large Seattle employer. In 2026 there is no state tax on wages, so the two 401(k) deferrals defer about $18,130 of federal tax (37% of $49,000) instead of about $23,700. Most employees working in Washington pay WA Cares at 0.58% of all wages with no cap (WA Cares Fund), about $6,090 on $1,050,000.

Stock sales matter more than they look. Washington taxes long-term capital gains at 7% above an annual standard deduction ($278,000 for 2025), with retirement accounts and real estate exempt (WA DOR). Selling $500,000 of gains in one year would add about $15,540 of Washington tax ($222,000 times 7%). Splitting sales across tax years, or giving shares to charity, can keep gains under the deduction.

Two longer-range items. Washington has enacted a 9.9% income tax on AGI over $1,000,000 starting in 2028 (WA DOR), and this family sits near that line, so pre-tax deferrals may matter more from 2028. The details, including how income is defined, still await DOR guidance. Washington also has its own estate tax with an exclusion of $3,000,000 for deaths from July 1, 2026 (WA DOR), far below the federal $15,000,000 per person. A home, retirement accounts and group life insurance can pass that quickly, which is a reason to review wills and trusts with an attorney. See our estate planning page.

Common mistakes at this income level

• Treating RSU withholding as the tax owed, then facing a five-figure April bill.
• Doing a backdoor Roth conversion while an old rollover IRA still holds pre-tax money.
• Giving cash to charity while holding highly appreciated shares in a taxable account.
• Assuming Washington has no income tax for high earners after 2027, or that a California capital gain gets a lower rate.
• Planning around a 2026 federal rate increase or estate exemption drop that did not happen.
• Putting large sums in a child’s UTMA without modeling the kiddie tax and the age at which the child gets control (18 in California by default; a lifetime gift can delay it to no later than 21, and a will or trust to no later than 25).

What to write down for your kids

None of these moves is complicated on its own. What gets lost is the reasoning: why you gave shares to a donor-advised fund instead of selling them, why the 529 was funded in one year, why you sold employer stock in pieces. A one-page note each year, kept with the tax return, gives your children a record of how you made the call. As Kevin Luu puts it: “Your kids don’t need to inherit your portfolio. They need to inherit your decision-making process.” Our Age Five Wealth Education program turns those notes into a FamilyKnowledge® Library.

Frequently asked questions

How do wealthy people legally reduce their taxes?

Mostly through timing and form, not secret loopholes. They defer income into retirement plans, hold appreciated assets instead of selling, give appreciated shares to charity, and pass assets to heirs, who generally receive a stepped-up cost basis at death (IRS Pub 551). For W-2 families the available tools are narrower than for business owners, which makes plan contributions and stock decisions the main levers.

Is a Roth conversion worth it at our income?

Usually not for large pre-tax balances while you are in the 37% federal bracket and a high California bracket, because you would pay nearly half the converted amount in tax now. The exception is the small, planned conversion: the backdoor Roth IRA and the mega backdoor Roth, where little or no pre-tax money is involved. Larger conversions are typically studied for lower-income years, such as a sabbatical or early retirement.

Does Washington’s capital gains tax apply to my 401(k) or my home?

No. Washington’s capital gains tax exempts retirement accounts and real estate, among other assets. It applies mainly to long-term gains on stocks, bonds and similar investments above the annual standard deduction ($278,000 for 2025). RSU income at vest is wages, not a capital gain, though any later growth you sell can be.

Your next step

Pull your most recent pay stubs and RSU vest schedule, and compare federal withholding to a 35% to 37% rate. That single check usually shows whether this year needs estimated payments. If you would like a second set of eyes on the full picture, our Tax & Wealth Assessment walks through these eight items with your numbers.

This is general education, not individual tax advice. The right move depends on your family’s full picture, so confirm details with your CPA.

Written by

Kevin Luu

Co-Founder and Chief Learning Officer, Bright Advisers

Kevin has advised high-income W-2 tech and biotech families since 2015, and leads the education-first Age Five Family Office from Brea, California.

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