Family Management LLC
How Business Owners Legally Shift Income and Reduce Family Taxes
A separate management entity that pays family members and sponsors its own benefits is one of the highest-leverage tax structures available to a $500K–$10M revenue business owner — if it is built with economic substance and survives an audit.
The Quick Read
Used cleanly, a Family Management LLC saves a $1.5M–$3M revenue S-corp owner roughly $40K–$80K per year by routing reasonable compensation to a spouse and working-age children through a separate management entity that sponsors its own retirement plan and benefits. Used aggressively — children “hired” who do nothing, compensation untethered from services rendered, no economic substance to the management entity — it is one of the cleanest IRS adjustments in the code. Llewellyn Financial itself operates through a Family Management LLC. The structure works. The execution is the entire game.
- How a Family Management LLC Actually Works
- The Strategy, Visualized
- The Three Reasonableness Tests Every Payment Must Pass
- Hiring Children: §3121 Rules and the S-Corp Gotcha
- The Management Fee from the Operating Business
- Sponsoring Benefits and Retirement Plans Through the FMLLC
- The Documentation File
- Worked Example: A Charlotte $1.8M Revenue Engineering Firm
- Frequently Asked Questions
The Family Management LLC sits in a strange place in the small-business tax landscape. It is one of the most powerful structures available to an owner with a working spouse and working-age children — and it is also the structure most aggressively oversold on social media. Half of what TikTok tax promoters say about it is correct. The other half will get an owner adjustment letters, accuracy-related penalties, and a CPA bill three times what the strategy was supposed to save.
The mechanics, done correctly, are clean. You form a separate LLC — usually a single-member LLC owned by you, sometimes a partnership owned jointly with your spouse. The Family Management LLC (FMLLC) hires family members who provide real services to the broader family enterprise: a spouse who handles bookkeeping, marketing, or HR; a sixteen-year-old who manages social media or office administration; a fourteen-year-old who handles data entry or supply organization. The operating business pays the FMLLC a market-rate management fee for centralized services — HR, payroll administration, executive support, bookkeeping. The FMLLC pays family members reasonable W-2 wages and sponsors its own retirement plan, accountable plan, and §125 cafeteria plan.
The savings come from three stacked sources. First, income shifting: a portion of household income moves from the high-earning owner's marginal bracket (often 32–37% federal plus state) into family members' lower brackets, frequently zero for working-age children. Second, FICA mitigation: under §3121(b)(3)(A), a child's wages from a sole proprietorship or a parent-only partnership are exempt from FICA — an exemption the FMLLC structure can preserve when the operating business is an S-corp. Third, plan sponsorship: the FMLLC, as a separate employer, can sponsor its own §401(k), defined-benefit plan, and benefits for the working spouse and adult-aged children with W-2 compensation, layering retirement deferrals on top of what the operating business already provides.
None of this is novel. The structure has been in case law for decades and is regularly used by competently advised business owners. What separates the version that works from the version that collapses is the same thing that separates the working Augusta Rule from the failing one: contemporaneous documentation, reasonable compensation, and economic substance.
How a Family Management LLC Actually Works
The structure is layered. The operating business — the S-corp, C-corp, or LLC that generates revenue — remains the engine. Above it sits the Family Management LLC, a separate legal entity with its own EIN, its own bank account, its own books, and its own employees. Between them sits a written management services agreement that defines what the FMLLC actually does for the operating business and what the operating business pays for those services.
The FMLLC employs family members who provide real services. It receives management fee payments from the operating business. It pays its employees through W-2 payroll. It sponsors its own retirement plan, health benefits, and accountable plan reimbursements. At year end, the operating business deducts the management fee under §162; the FMLLC reports the income, deducts wages and benefits, and passes through the residual to its owners.
What makes the structure work is that the FMLLC is not a paper entity. It has economic substance: a real bank account funded by real management fee payments, real services provided to the operating business, real services provided by the family members it employs, and real documentation behind every transaction. What kills the structure is the inverse: a checkbook entity that exists only to wash payments through and create the appearance of structure where none exists.
The Strategy, Visualized
Three substance gates separate a working FMLLC from a paper one. The operating business must pay the FMLLC a fee that reflects the actual services performed. The FMLLC must pay family members compensation that reflects their actual work. And every payment must be documented contemporaneously. Clear all three and the structure delivers; miss any one and the entire structure collapses on exam, with deductions disallowed and penalties on top.
The Three Reasonableness Tests Every Payment Must Pass
The Tax Court applies a three-layer reasonableness analysis to FMLLC structures. Each layer has its own case law and its own defense file.
The first test is reasonable compensation to family members. The nine-factor framework from Mayson Manufacturing v. Commissioner (178 F.2d 115, 6th Cir. 1949) remains the controlling standard: training and experience, duties and responsibilities, time devoted, comparison to similar businesses, comparison to dividends, prevailing economic conditions, salary history, the corporation's salary policy as to all employees, and the relationship between the salary and stockholdings. For a family employee, the practical question is whether an unrelated third party would be paid the same amount for the same role.
The second test is reasonable management fee from the operating business. The fee must reflect the value of services actually rendered — payroll administration, HR, executive support, bookkeeping — and not be a number that backs into a target. The defensible practice is to benchmark against published PEO and outsourced HR pricing for similar service scope.
The third test is economic substance. The FMLLC must function as a real business entity: separate bank account, separate books, separate payroll system, contemporaneous board minutes or written decisions, and a paper trail showing that work was actually performed. A management entity that exists only on paper, with no real activity beyond moving money, is the fact pattern the IRS already knows how to defeat.
Hiring Children: §3121 Rules and the S-Corp Gotcha
The most under-discussed aspect of the FMLLC structure is the §3121 FICA exclusion for children's wages — and the specific reason most operating S-corps cannot capture it directly. Under §3121(b)(3)(A), wages paid by a sole proprietorship to a child under age 18 are exempt from FICA. Under §3121(b)(3)(B), the same exemption applies to wages paid by a parent-only partnership.
The exemption does not apply to wages paid by an S-corp, C-corp, or any partnership with non-parent partners. This is the gotcha that catches owners who try to put their teenage children directly on the operating business payroll: if the operating entity is an S-corp, the kids' wages are subject to full FICA, eliminating most of the savings the strategy was supposed to deliver.
The FMLLC structure restores the exemption. By forming the FMLLC as a sole proprietorship (single-member LLC owned by one parent) or as a parent-only partnership, the FMLLC qualifies for the §3121(b)(3) exemption when paying children under 18. The operating S-corp pays a management fee to the FMLLC; the FMLLC, as a sole-prop or parent-only partnership, pays the children FICA-free wages. The exemption is preserved.
One additional discipline: children must perform real, age-appropriate work. Eller v. Commissioner, 77 T.C. 934 (1981) is the foundational case — the Tax Court allowed wages paid to two older children (ages 11 and 12) who performed real services in the family's mobile home park business, but disallowed wages paid to the seven-year-old whose claimed services the court found implausible. The line of follow-on cases has reinforced the same pattern: wages tied to genuine, age-appropriate, documented services hold up; wages untethered from real work or reconstructed job descriptions do not. Fourteen-year-olds organizing supplies and managing an Instagram feed: defensible. Six-year-olds on payroll at $40 per hour for "modeling": not.
The Management Fee from the Operating Business
The management fee is the deduction the operating business takes for the services the FMLLC provides. It is also the most contested number under audit, second only to reasonable compensation itself. The defensible practice mirrors the FMV substantiation discipline of the Augusta Rule: benchmark, document, and stay below median.
What an FMLLC typically provides: payroll administration, HR functions, accountable-plan reimbursement processing, executive support, bookkeeping, retirement plan administration coordination. These services have a market rate. PEOs (professional employer organizations) charge between 2% and 6% of payroll for full-suite HR. Outsourced bookkeeping ranges from $500 to $3,000 per month depending on complexity. Add executive admin support at standard hourly rates and the package value becomes calculable.
An owner with $1.5M of revenue and $400K of payroll, charging an FMLLC fee of $200K–$250K for full HR-payroll-bookkeeping-admin services, sits well within market range. The same owner charging $600K for the same services does not.
Sponsoring Benefits and Retirement Plans Through the FMLLC
The retirement plan layer is where many FMLLCs deliver their largest savings. Because the FMLLC is a separate employer, it can sponsor its own §401(k) and defined-benefit plan, with contributions calculated against the W-2 wages it pays the working spouse and adult-aged children.
The mechanics are governed by the controlled group and affiliated service group rules under §414(b), (c), and (m). When the same family owns both the operating business and the FMLLC, the two are typically a controlled group, and retirement plans must be tested together for nondiscrimination. This does not eliminate the strategy — it just means the plans must be designed in concert. A coordinated cash balance plan plus §401(k) at the operating business level, layered with an FMLLC-sponsored §401(k) for the spouse, often produces additional deferral capacity in the $50K–$120K range per year that a single-employer structure cannot match.
The Documentation File
Family Management LLC Audit-Defense File
[ ] Articles of organization, EIN letter, operating agreement
[ ] Separate bank account funded only by management fee payments
[ ] Written management services agreement, signed and dated
[ ] Job descriptions for each family employee with pay-rate rationale
[ ] Time logs or timesheets for family employees, contemporaneous
[ ] Payroll records run through formal payroll system
[ ] W-2s issued; child wages reported under §3121 exemption
[ ] PEO / market benchmark pricing for the management fee
[ ] Retirement plan documents and §414 controlled-group analysis
[ ] Annual board / member minutes documenting fee, comp, and benefits
This is roughly four to six hours of administrative discipline per year, run quarterly, not reconstructed in March. Reconstructed files lose. The Eller taxpayers and the long line of family-employment cases that followed lost on exactly that fact pattern.
Worked Example: A Charlotte $1.8M Revenue Engineering Firm
"David and Sarah," Charlotte S-Corp Engineering Firm
David runs an 18-person mechanical engineering firm in Ballantyne, structured as an S-corp, with $1.8M of revenue and $310K of net income to him personally. Sarah, his wife, runs marketing and bookkeeping for the firm 15 hours a week. Their two children — 16 and 14 — help with social media, basic admin, and supply organization roughly 5 hours a week during the school year and more in summer. Without an FMLLC, Sarah is on the operating S-corp payroll at $40K, the kids do not draw wages, and David captures none of the §3121 exemption.
In 2026, David and Sarah form Stillwell Management LLC as a parent-only partnership. The FMLLC enters a written management services agreement with the operating S-corp covering payroll administration, HR, bookkeeping, accountable-plan processing, and executive support. The S-corp pays the FMLLC a $220K annual management fee, benchmarked against PEO pricing and signed quarterly invoices.
FMLLC management fee from S-corp: $220,000
Sarah W-2 (15 hr/wk, market rate): $52,000
Daughter, age 16 (12 hr/wk during school): $14,500
Son, age 14 (8 hr/wk): $9,000
FMLLC §401(k) for Sarah (50% deferral): $14,000
FMLLC cash balance contribution for Sarah: $76,000
Administrative overhead, accounting: $5,500
The tax effect, modeled at David's 37% federal bracket:
Children's wages shifted from 37% to 0% bracket: $8,695
Children's FICA exempted under §3121(b)(3): $3,597
Sarah additional retirement deferral capacity: $33,300
Sarah W-2 vs. flow-through bracket arbitrage: $4,200
Total federal tax savings: $49,792
Each child's wages also fund a Roth IRA at the contribution limit, compounding tax-free for sixty years. The total compounding value of those Roth contributions, modeled at a 6% real rate, exceeds $1M by retirement — effectively free generational transfer that does not draw against David's estate exemption.
Illustrative composite. Actual outcomes depend on the specific services performed, market benchmarks, controlled-group testing, state tax treatment, and the cooperation of the family members involved. Roth IRA compounding assumes child continues to earn enough to contribute and the Roth grows at long-term real rates; outcomes vary.
Frequently Asked Questions About Family Management LLCs in 2026
My operating business is an S-corp. Can I just put my kids on the S-corp payroll instead?
You can, but you lose the §3121(b)(3) FICA exemption that makes the strategy work. The exemption applies only to wages paid by a sole proprietorship or a parent-only partnership. An S-corp paying a child wages is subject to full FICA. The FMLLC structure exists specifically to preserve the exemption when the operating entity is an S-corp.
How young can my children be to be on payroll?
There is no statutory minimum age in the Code, but state child labor laws apply, and the Tax Court evaluates whether the work performed is age-appropriate and whether the wages reflect the actual services rendered. Practical floor: ages 14 and up for substantive administrative work; younger only with caution and well-documented age-appropriate roles. Wages must reflect what an unrelated third party would pay for the same work, not what the parent wants to deduct.
Does the management fee need to match what a PEO would charge exactly?
No, but it should be benchmarked against the same range. The defensible practice is to gather pricing from at least two PEO or outsourced-HR providers covering the same service scope and set the FMLLC fee within or below that range. The fee should be supportable as the value of services rendered, not as the residual needed to hit a target.
Will this trigger an audit?
Form 1120-S returns with significant management fees to related entities receive elevated scrutiny, and §3121 child-wage exemptions are flagged for review on amended returns. The structure does not avoid audit risk — it survives audit when the documentation is complete. Owners who run the structure cleanly and contemporaneously report the same outcome on exam: full sustainment of the deductions, no penalties.
Can I combine the FMLLC with the Augusta Rule and an Accountable Plan?
Yes — the three strategies stack cleanly and are commonly run together. The Augusta Rule covers tax-free home rental for legitimate business meetings. The Accountable Plan covers tax-free reimbursement of business expenses paid personally. The FMLLC covers income shifting and benefit sponsorship. None overlap; each addresses a distinct tax outcome. A coordinated stack of all three for a $1.5M–$3M revenue S-corp owner typically saves $60K–$120K per year.
Used cleanly, the Family Management LLC is one of the highest-leverage structures available to a $500K–$10M revenue business owner: tens of thousands of annual tax savings, expanded retirement deferral capacity, and a generational wealth-transfer engine that runs on family members' Roth IRAs. Used aggressively, it is one of the cleanest IRS adjustments in the code, with a long line of case law showing what happens when the documentation is thin and the substance is missing.
If you are an owner with a working spouse or working-age children, this is the conversation worth having before you set up the entity, not after.
This article is for educational purposes only and does not constitute individualized tax, legal, or investment advice. Tax law is current as of the 2026 tax year and may change. Consult with a qualified advisor regarding your specific situation. Llewellyn Financial is a fee-only, fiduciary RIA based in Charlotte, NC, and itself operates through a Family Management LLC.
