Should I form an LLC as a solo consultant?

For most solo consultants earning $30,000+ net profit annually with established client relationships, a single-member LLC makes sense for liability protection. However, forming an LLC alone does not reduce your self-employment tax by a single dollar — that requires a separate S-corp election. State costs also matter significantly: California charges a mandatory $800/year franchise tax on LLCs regardless of income.

At what income level does the S-corp election make sense?

Most CPAs recommend the S-corp election when net profit consistently exceeds $60,000–$80,000 per year. At $100,000 net profit, the election typically produces net savings of $3,000–$5,000 after accounting for payroll service costs ($600–$1,000/year) and incremental CPA fees ($500–$1,500/year). Below $60,000, the compliance overhead may consume much of the tax savings — verify with your CPA.

What is the 2026 Social Security wage base?

The 2026 Social Security wage base is $184,500. Self-employment tax at 12.4% applies to net earnings up to this amount. The 2.9% Medicare portion applies to all net earnings, with an additional 0.9% surtax above $200,000 for single filers.

Finance & Legal Layer · Brief 59

Business Entity OS for Solo Consultants:
LLC vs S-Corp vs Sole Proprietor — The 2026 Decision Framework.

The entity decision is really three separate decisions stacked on top of each other: the liability decision, the tax optimization decision, and the timing decision. Most consultants conflate all three. This framework — with the SE tax math, state cost realities (including California's $800 franchise tax), and a five-gate decision tree — gives you a clear path to the right structure for your stage. Not legal or tax advice. Updated May 2026.

Updated: May 2026 · Pricing verified

Not legal or tax advice

This article is an educational framework to help you understand business entity options and formulate informed questions for a qualified CPA and/or business attorney. Tax law changes frequently and state laws vary significantly. Nothing here establishes an attorney-client or accountant-client relationship. Consult a licensed CPA and/or attorney before making any entity formation or tax election decision.

The three stacked decisions

Most consultants treat "should I form an LLC?" as one question. It's three.

The entity decision is really three separate decisions stacked on top of each other — and conflating all three is how consultants end up with either over-engineered structures they don't need or under-protected situations they regret:

The liability decision

Do you need the structural separation of an LLC, and does it actually protect you in the way you think it does?

The tax optimization decision

At what revenue level does the S-corp election create net savings after accounting for payroll administration costs?

The timing decision

When, specifically, should each of these decisions be made?

This article gives you the framework for all three. For the ongoing tax operation once you've chosen your structure, see the Tax & Accounting OS. For the contracts that provide the first line of liability protection, see the Contract & eSign OS.

The four options

Entity types explained plainly.

Sole Proprietor — The Default

If you do paid consulting without forming a legal entity, you are automatically a sole proprietor. No state registration required. All net business income flows directly to Schedule C on your personal return. You pay federal income tax at your marginal rate on all net profit, plus self-employment (SE) tax on 92.35% of net profit at 15.3% — 12.4% Social Security and 2.9% Medicare. In 2026, the Social Security portion applies to the first $184,500 of net earnings.

The SE tax is the defining cost. At $80,000 net profit: ~$11,304. At $100,000: ~$14,130. At $150,000: ~$20,921. You can deduct 50% of SE tax on your income return, but the full 15.3% is still levied on every dollar of profit.

Liability: Your personal assets — savings, home, car — are not shielded from business liabilities. A client can sue you and reach your personal assets directly.

Right for: Solos just starting, testing with first 1–2 clients, earning under $30–40K net profit, or operating where liability exposure is genuinely low. Also appropriate when state LLC costs are high relative to income.

Single-Member LLC — The Most Common Choice

A legal entity formed under state law that creates separation between you and your business. "Single-member" means you are the sole owner. By default, the IRS treats a single-member LLC as a "disregarded entity" — meaning it's ignored for federal tax purposes. The LLC's income is still reported on Schedule C, exactly like a sole proprietor.

The most common misconception

Forming an LLC alone does not reduce your SE tax by a single dollar. Many new solo consultants form an LLC expecting a tax benefit and receive none — until they make a separate tax election (see the S-corp section below).

Liability protection: An LLC creates a legal wall between the business and your personal assets — provided you maintain proper separation (business bank account, no commingling of personal and business funds). This protection can be "pierced" if you treat the LLC as a personal piggy bank. Also key: LLC liability protection is more robust against commercial debts than against your own professional conduct. Your personal liability for your own professional actions generally travels with you regardless of entity. Professional liability insurance is the complement.

State situation	Cost note
Most states	Formation $50–$200 one-time; annual reports $50–$150/yr; registered agent $100–$300/yr
California	$800/yr minimum franchise tax — applies even with zero revenue. Year 1 exemption available for LLCs formed in 2026.
New York (downstate)	Publication requirement adds $1,200–$2,000+ in some counties

Right for: Most solo consultants with established client relationships, earning $30K+ net profit, operating in states with reasonable LLC costs, or where client relationships and contracts create meaningful potential for commercial disputes.

LLC Taxed as S-Corp — The Tax Optimization Layer

Not a new entity type — you still have an LLC under state law. This is a federal tax election (Form 2553) that changes how the IRS treats your LLC's income. Under the S-corp election, you are required to pay yourself a "reasonable salary" as a W-2 employee of your own LLC. That salary is subject to payroll taxes at the full 15.3% rate. Remaining net profit above your salary is taken as a distribution — and distributions are NOT subject to SE/payroll tax. This split is the mechanism that generates tax savings.

The math at $100,000 net profit (consult your CPA for your specific numbers)

Without S-corp election: Full $100,000 subject to SE tax → ~$14,130 SE tax owed.

With S-corp election ($60,000 reasonable salary): $60,000 in payroll taxes (~$8,478) + $40,000 in distributions (no SE tax) = ~$8,478 total. Gross savings: ~$5,652.

Less compliance overhead (payroll service ~$600–$1,000/yr + incremental CPA fees ~$500–$1,500/yr): net savings typically $3,000–$5,000/year at $100K net profit.

Net profit	Approximate net savings (after overhead)
$60,000	May break even or be marginal — verify with your CPA
$80,000	$1,500–$3,500 (varies by state and CPA fees)
$100,000	$3,000–$5,000 — typically clear and meaningful
$150,000	$7,000–$10,000 — overhead is proportionally small

The "reasonable salary" requirement: The IRS requires you pay yourself a salary comparable to what another employer would pay for similar services. Paying yourself $1 in salary and $200,000 in distributions is a known audit trigger. Most CPAs recommend 40–60% of net profit as a starting point; document the analysis. The election deadline is generally March 15 of the applicable tax year for existing entities.

California note: California charges 1.5% of S-corp net income above the $800 minimum for LLCs with an S-corp election. Factor this into your net savings calculation with your CPA. Right for: Solo consultants with consistent net profit of $80,000+ who want to reduce SE tax and are comfortable paying for a payroll service and a slightly higher CPA bill.

C-Corporation — Almost Never Right for Solo Consultants

A C-corp pays corporate income tax at 21% federal on its profits. Profits distributed as dividends are taxed again at the shareholder's rate — this is "double taxation." For a solo consultant who needs to draw business income to live on, the C-corp creates unnecessary complexity and a second layer of taxation without benefit.

The only consultants for whom a C-corp might be appropriate: those building toward a technology product, venture-backed entity, or planned QSBS (Qualified Small Business Stock) play alongside their consulting work. This is a specialized situation requiring dedicated legal and tax counsel well beyond this article. For everyone else: dismiss the C-corp and focus on the three options above.

The liability question

What an LLC actually protects you from — and what it doesn't.

Liability protection from an LLC is real but limited in scope for most solo consultants. It protects against commercial creditors — vendors, landlords, business loans. It does not reliably shield you from claims arising from your own professional conduct — negligent advice, project failure, missed deliverables — because courts look through the entity at the individual who performed the work.

A well-drafted consulting agreement with liability caps, clear deliverable definitions, and limitation of liability clauses provides more practical protection in most consulting engagement disputes than the LLC alone. See the Contract & eSign OS for the contract infrastructure that is your first real liability tool. Professional liability (E&O) insurance is the direct answer to professional conduct risk — not an entity structure.

Form the LLC for the right reasons — not because you believe it makes you bulletproof. The LLC does protect against unrelated business liabilities. Those scenarios are real. But a solo consultant who skips contracts and E&O insurance while prioritizing LLC formation has their protection stack in the wrong order.

Decision framework

Five sequential gates to your entity recommendation.

Gate 1 — What is your annual net profit?

Under $30,000 → Stay sole proprietor. Focus on building revenue before optimizing entity structure. Revisit when net profit approaches $40–50K.

$30,000–$60,000 → A single-member LLC likely makes sense for liability protection. S-corp election is premature.

$60,000–$80,000 → You are in the analysis zone. A CPA conversation is warranted.

$80,000+ → LLC + S-corp election conversation with your CPA is a high-priority item.

Gate 2 — What state are you operating in?

California: Model the $800/year franchise tax explicitly. At $40K net profit, this changes the LLC cost-benefit calculation materially. A sole proprietor in California pays $0 in franchise tax; a California LLC owner pays $800 minimum.

New York (downstate): Factor in publication costs if forming a new LLC — $1,200–$2,000+ in some counties.

Most other states: Formation cost $50–$200 one-time; annual fees $50–$150; registered agent $100–$300/yr. Verify your state's specific requirements with a CPA or attorney.

Gate 3 — Have you already formed an LLC?

Yes, plain LLC, no S-corp election: Your entity structure is right. The question is whether to add the S-corp election. Run the tax savings analysis with a CPA before your state's election deadline.

No entity (sole proprietor): Decide whether to form an LLC first, then decide whether to layer on the S-corp election. Do not start with the S-corp conversation — the LLC is the prerequisite.

Gate 4 — Is your net profit stable and predictable?

Stable (within 20–30% year over year): The S-corp election is operationally straightforward. Payroll deposits can be systematized. Recommended if profit threshold clears the break-even.

Highly variable (year-to-year swings of 40%+): Discuss payroll cash flow management with your CPA before electing S-corp status. A plain LLC may be the better intermediate step.

Gate 5 — What is your timeline in the business?

Pre-revenue / first year: Stay sole proprietor. Form an LLC when you have your first real client engagement with meaningful deliverables, financial stakes, or client data.

$30K–$60K net profit, 2+ years in: Your LLC is the right home base. Put the S-corp election on next year's agenda with your CPA if profit is growing.

$80K+ net profit, consistent for 1+ years: Bring the S-corp election to your CPA immediately if you haven't already.

Archetype configurations

Which structure fits your practice stage.

The Market Tester — under $30K net profit

Structure: Sole proprietor. No formation required. The overhead of an LLC — even the minimal cost — is not justified by income at this stage. Liability exposure is low when engagements are small. When the first real contract with significant scope and fees arrives, form an LLC then.

The only compliance obligation of consequence: quarterly estimated tax payments. Start there. See the Tax & Accounting OS.

The Established Solo — $40K–$80K net profit

Structure: Single-member LLC. The LLC provides meaningful liability separation for established client relationships. Formation cost is a one-time expense. Ongoing costs are modest and justified by the income level.

Action item: If net profit has reached $65K+ for two consecutive years, bring the S-corp election question to your CPA before Q1 of the following year. The break-even may or may not favor it depending on your state and accounting costs.

The Six-Figure Consultant — $100K–$200K net profit

Structure: LLC taxed as S-Corp. At $100K net profit, an S-corp election with a $60,000–$65,000 reasonable salary produces SE tax savings of ~$5,000–$6,000/year gross. Net of payroll service (~$600–$1,000/yr for Gusto or similar) and incremental accounting fees (~$500–$1,500/yr), the net benefit is typically $3,000–$5,000/year. Meaningful and recurring.

Action item: If not already on the S-corp election, bring this to your CPA now. Calculate the savings explicitly. Confirm state-specific treatment. California consultants: factor in the additional 1.5% state tax on S-corp net income above the $800 minimum.

The High-Revenue Specialist — $200K+ net profit

Structure: LLC taxed as S-Corp — plus a proactive CPA relationship. At high income levels, the SE tax savings are very large and the compliance overhead is proportionally small. At $200K+ net profit, the conversation also expands: Solo 401(k) contribution limits, QBI deduction optimization, pension contributions, and whether any portion of the business has C-corp characteristics (retained IP, planned sale).

Note on subcontractors: If the practice is expanding toward employees or regular subcontractors, entity structure gets more complex before it gets simpler. Bring this to a CPA before hiring. See the Subcontracting OS.

Total cost of ownership

What each structure actually costs per year.

Item	Sole Prop	LLC (plain)	LLC + S-Corp
Formation (one-time)	$0	$50–$500	$50–$500 (same entity)
Annual report / state fees	$0	$50–$350/yr	$50–$350/yr + state S-corp fees
Registered agent	$0	$100–$300/yr	$100–$300/yr
Payroll service (Gusto etc.)	$0	$0	$600–$1,000/yr
Incremental CPA fees	$0	~$200–$400/yr	$500–$1,500/yr (Form 1120-S)
CA franchise tax	$0	$800/yr minimum	$800/yr minimum + 1.5% net income

Formation costs and annual fees vary significantly by state. Verify with your state's Secretary of State office and your CPA before making any decisions.

What to do next

Three actions based on where you landed.

If you are still a sole proprietor and earning $30K+

Research your state's LLC formation fee and annual costs. If the math is reasonable, form the LLC. Open a dedicated business bank account immediately — this is the single most important step for maintaining the liability protection the LLC provides. Then contact a CPA to review your specific situation before the next tax year.

If you have an LLC and are approaching $80K+ net profit

Schedule a conversation with a CPA specifically to model the S-corp election savings for your numbers. Bring: last year's Schedule C, your current CPA fees, and the SE tax line from your return. Ask them to calculate net savings at your expected income level. The S-corp election deadline for the current year is generally March 15.

If you are already on the S-corp election

Verify your reasonable salary is documented. RCReports or similar tools exist specifically for this analysis — your CPA may already use one. Review payroll deposit compliance quarterly. At $200K+ net profit, a proactive CPA relationship (not just annual filing) starts to pay for itself in optimization that a reactive relationship misses.