By Kevin Luu, Co-Founder and Chief Learning Officer. Reviewed on 2026-09-30.
Creating a family LLC for investments takes four steps: decide what the LLC is for, form it with your state and sign an operating agreement, get an EIN and move the investment account into the LLC’s name, then run it like a real entity every year. In California that costs at least the $800 annual LLC tax plus a state and federal return; in Washington the state cost is lower. The LLC does not lower your income tax. What it can do is let parents keep control of investments while ownership shifts gradually to the kids, which matters most for gifting and estate planning.
This guide is written for W-2 households earning $750,000 to $3 million in California or Washington, typically with a taxable brokerage account built from RSU sales and bonuses, and children under 12. The figures are for 2026 unless labelled otherwise.
What a family investment LLC actually changes, and what it does not
A family LLC with two or more members is taxed as a partnership by default. The LLC files a federal Form 1065 and sends each member a Schedule K-1; the income still lands on the members’ own returns. So a family LLC is a container for ownership and control, not an income tax shelter.
Three things do change:
- Control stays with the managers. Parents can be the managers and give children non-voting units. The kids own a growing share of the value but cannot sell, withdraw or direct investments.
- Gifts become units, not accounts. Instead of handing a child a brokerage account, you gift membership units. A gift of units can qualify for the federal annual exclusion of $19,000 per recipient for 2026, or $38,000 when a married couple splits gifts (Rev. Proc. 2025-32). Splitting gifts requires filing Form 709. If the units are community property, which is common for married couples in California and Washington, each spouse is already treated as giving half, so the same $38,000 per child needs no gift-splitting election, though each spouse must file Form 709 if their half of the gifts requires a return. Only gifts of a present interest qualify: if the child has no immediate right to use the units or their income, the gift can be treated as a future interest that gets no annual exclusion (Form 709 instructions). The operating agreement has to be drafted with this in mind.
- Money does not pass to the child at 18 or 21. A UTMA account in California transfers at 18 by default, and can be delayed only to 21 for a lifetime gift (Cal. Probate Code §3920.5). In Washington, gifted UTMA assets transfer at 21, or up to 25 if the transferor says so when naming the custodian (RCW 11.114.200). LLC units have no such date; the operating agreement sets the rules.
Does a family LLC make sense at your net worth?
For most families in our reader group, the honest answer depends on the state and on the size of the taxable portfolio.
- Federal estate tax is rarely the driver now. The basic exclusion is $15,000,000 per person for 2026, made permanent by the One Big Beautiful Bill Act and indexed from 2027 (IRS). A married couple with $6 million of net worth is well below it.
- Washington estate tax often is the driver. Washington’s exclusion is $3,000,000 for deaths from July 1 to December 31, 2026 ($3,076,000 for deaths in the first half of 2026), per the Department of Revenue tables. A Seattle family with a house, retirement accounts and vested Amazon or Microsoft stock can pass that level in their forties. Moving growth out of the parents’ estate each year has real value there.
- California has no state estate tax, so for a California family the case rests on control, teaching and gifting, plus a possible federal benefit if the estate may one day exceed $15 million per person. That has to be weighed against $800 a year and two extra returns.
If the family does not plan to start gifting to the children for many years, and the taxable portfolio is modest, the annual cost and paperwork of a family LLC can outweigh what it adds. A 529 or a UTMA may do the job.
Step 1: Write down what the LLC is for
Before any filing, write one page that answers three questions. Is the goal moving growth out of our estate, keeping the kids from controlling money too early, pooling money with grandparents or siblings, or teaching the children how we invest? Which assets go in? Who decides when we disagree?
This page becomes the core of the operating agreement and, later, of what you pass on. As Kevin Luu puts it: “Your kids don’t need to inherit your portfolio. They need to inherit your decision-making process.”
Step 2: Form the LLC and sign an operating agreement
In California you file Articles of Organization with the Secretary of State; in Washington you file a Certificate of Formation. Most families form in their home state. Forming in another state (Wyoming, Nevada or Montana are common suggestions online) does not avoid California’s tax: every LLC doing business or registered in California owes the annual tax (FTB), and an LLC managed from a California home will usually have to register there anyway.
The operating agreement matters more than the filing. It should cover:
- Manager-managed structure, with parents (or their revocable living trust) as managers.
- Voting and non-voting units, and who may receive units (usually lineal descendants and trusts for them).
- Transfer restrictions: no sale or pledge of units without manager consent, and buy-back rights if a unit ends up with a divorcing spouse or creditor.
- Distribution policy, and what happens when a manager dies or becomes incapacitated.
Our guide to the elements of a family LLC operating agreement goes clause by clause. Have an estate planning attorney draft it, because the agreement must work with your trust and wills.
Step 3: Get an EIN, open the account and fund it
A multi-member LLC needs its own EIN from the IRS. Open a brokerage account titled in the LLC’s name, then transfer assets in. Keep the LLC’s money fully separate from personal money; mixing them is the most common reason an LLC’s protections fail.
Funding usually happens in kind: you move shares rather than selling them. Contributing appreciated shares to a partnership is generally tax-free under IRC §721, but §721(b) makes it taxable when the partnership is treated as an investment company and the contribution diversifies the contributors. That can happen when, say, parents contribute concentrated Apple shares and grandparents contribute a different stock. Talk to your CPA before combining different families’ securities.
Keep the house and retirement accounts out. IRAs and 401(k)s cannot be owned by an LLC, and moving a primary residence into an LLC can complicate the home sale exclusion and California property tax reassessment rules.
Step 4: Run it like a real company every year
The IRS looks at how a family LLC operates, not just the papers. Estate tax cases have pulled LLC assets back into a parent’s estate when the parent treated the account as personal money. The annual routine:
- Federal return: Form 1065, due March 15 for a calendar-year partnership, with K-1s due to members by the same date unless extended (Form 1065 instructions).
- California: $800 annual tax paid by the 15th day of the 4th month of the tax year, Form 568, and an additional LLC fee if total California income reaches $250,000 ($900 at $250,000 to $499,999, rising to $11,790 at $5 million or more), per the FTB.
- Washington: an annual report with the Secretary of State. Ask your CPA whether the LLC needs to register for business and occupation tax.
- Gifts: gifts of units are usually valued by a qualified appraiser. Units that carry no vote and cannot be sold freely are often valued below their share of the account, and the IRS reviews those discounts closely. The statute of limitations on a gift starts running only if the gift is adequately disclosed on Form 709 (Form 709 instructions), so many attorneys file Form 709 with the appraisal even when a gift is inside the annual exclusion.
- Minutes: one short record of each investment decision and distribution.
Worked example: a Seattle family and a Palo Alto family
Assumptions (illustrative): both couples earn $1.4 million in W-2 income, have two children aged 6 and 9, and move $1,500,000 of taxable index funds into a family LLC. The portfolio earns about $36,000 a year of dividends and realized gains. Each year the parents gift units worth $38,000 to each child ($19,000 from each parent, either as community property or by electing gift splitting on Form 709), for a total of $76,000 a year, and the gifts are assumed to qualify as present interests.
| Item | Seattle family | Palo Alto family |
|---|---|---|
| State annual LLC tax | None (annual report fee only) | $800 |
| California LLC fee | Not applicable | None (total income under $250,000) |
| Value gifted out after 10 years, before growth | $760,000 | $760,000 |
| State estate tax relevance | High: estate likely above the $3,000,000 WA exclusion | None at state level |
| Main reason to do it | Shrinking the taxable WA estate while keeping control | Control and teaching; federal estate benefit only if the estate may exceed $15M per person |
The kiddie tax limits any income shift. If after about six years of gifts each child owns about 15% of the LLC ($228,000 of units on roughly $1.5 million, before growth), each is allocated about $5,400 of the $36,000. For 2026 the first $1,350 of a child’s unearned income is tax-free, the next $1,350 is taxed at the child’s rate, and anything over $2,700 is taxed at the parents’ rate (Rev. Proc. 2025-32, Form 8615 instructions). So about $2,700 per child is taxed at the parents’ rate anyway. The income tax saving is small; the estate and control benefits are the point.
For the Palo Alto family, the realized gains inside the LLC are also taxed by California as ordinary income, since California has no lower rate for capital gains (FTB). Putting assets in an LLC does not change that.
Common mistakes
- Forming out of state to avoid the $800 California tax. It usually does not work and adds a second registration.
- Using a template operating agreement that conflicts with the family trust.
- Paying personal bills from the LLC account, or taking distributions only to the parents.
- Claiming a large valuation discount without an appraisal.
- Giving children voting units while they are young.
- Drafting transfer and distribution limits so tight that gifts of units fail the present-interest test and do not qualify for the annual exclusion.
What to document for your children
A family LLC is one of the few structures a child can grow into. At 10, they can see a one-page statement of what the family owns and why. At 16, they can sit in on the annual meeting and read the minutes. The written purpose from Step 1, the decision record in the minutes, and a short note each year on why you invested the way you did are what make the units useful to them later. Conversations fade. Documentation compounds. We cover how to set up that record in Age Five Wealth Education and in our guide to building a family wealth legacy.
Questions families ask
Can a family office be an LLC?
Yes. Many single-family offices are organized as LLCs, often with one LLC holding investments and a separate management entity employing staff. For a W-2 household, a “family office” is more often a set of services than a company; the family investment LLC described here is usually the only entity needed. See our family governance page for how the pieces fit.
Can I start an LLC for my child?
A minor generally cannot sign contracts, so a child does not form or manage an LLC directly. The usual structure is a family LLC managed by the parents, with units gifted to the child outright, to a UTMA custodian, or to a trust for the child. The operating agreement then controls what the child can do with those units, even after age 18.
Is a family LLC better than a trust?
They do different jobs and are often used together. A revocable living trust avoids probate and names who manages assets if you die. A family LLC holds investments and lets ownership shift gradually. A common setup is the parents’ trust as manager and irrevocable trusts for the children holding non-voting units. Our estate planning team coordinates this with your attorney.
Next step
Write the one-page purpose statement from Step 1 and bring it, with your latest brokerage statement and trust documents, to your estate attorney and CPA. If you want help deciding whether the LLC is worth the annual cost for your family, the Tax & Wealth Assessment covers it alongside your tax planning.
This is general education, not individual advice. The right structure depends on your family’s full financial and legal picture.
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.
Connect on LinkedIn → · About KevinThis is part of how we approach Family Governance for high-income W-2 families at Bright Advisers.
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