Incorporation Choices for Service Businesses

Why this matters

The legal structure of a service business affects taxes, liability, hiring, financing, + exit options for the entire life of the company. The wrong choice early on can cost an owner + over a few years in unnecessary tax + administrative overhead. Most contractors form an LLC by default - sometimes that's right + sometimes it's leaving a lot of money on the table. This is the working reference. Not legal advice; consult a CPA + attorney for your specific situation.

The four structures field-service operators see

Sole Proprietorship

• Default if you operate under your own name without filing
• No separate legal entity
• Personal liability for ALL business debts + lawsuits
• Income flows to personal return on Schedule C
• Subject to full self-employment tax (~15.3%)
• Worst for liability + tax efficiency

Rare to recommend for any service business with employees, vehicles, or material liability exposure.

Single-Member LLC (SMLLC)

• Legal entity separate from owner
• Liability protection (creditors generally can't reach personal assets)
• Default tax treatment: same as sole prop (Schedule C, full self-employment tax)
• Simple admin (no separate tax return needed by default)

The default for new contractors. Liability protection + easy admin.

Multi-Member LLC

• Same as SMLLC but with multiple owners
• Operating agreement defines ownership + profit splits
• Files separate partnership tax return (Form 1065) + each owner gets K-1
• Self-employment tax on each owner's distributive share

For partnerships.

S-Corp Election (NOT a separate entity - a TAX ELECTION)

• An LLC OR corporation can elect S-Corp tax treatment with IRS Form 2553
• Owner becomes "shareholder-employee" of the entity
• Owner pays themselves a "reasonable salary" via W-2 payroll
• Additional profit distributions are NOT subject to self-employment tax
• This is the BIG TAX SAVINGS for profitable contractors
• Requires payroll setup + separate 1120-S tax return

C-Corporation

• Separate taxable entity (pays corporate tax)
• Double-taxation: profits taxed at corp level + dividends taxed at personal level
• Rare for small service businesses
• Used when: outside investors, very high reinvested profits, multi-class shares

The S-Corp tax savings math (the most-asked question)

Self-employment tax: 15.3% on net business income up to Social Security wage base, then 2.9% above that.

LLC default treatment: ALL net profit subject to self-employment tax.

S-Corp election: only the "reasonable salary" portion subject to FICA payroll tax (employee + employer side = 15.3% total). Profit distributions above salary = NO self-employment tax.

How the saving is actually computed. Work it as a percentage of profit rather than from a remembered figure, because the numbers move every year.

LLC default (or sole proprietor): the entire net profit is self-employment income. Self-employment tax runs 15.3 percent (both halves of Social Security and Medicare) on profit up to the Social Security wage base, then 2.9 percent Medicare with no ceiling above it, plus the Additional Medicare Tax above the statutory threshold. Federal and state income tax sit on top and are unaffected by the entity choice.

S-Corp election: only the reasonable salary carries FICA. Profit distributed above that salary carries none. Federal and state income tax are the same either way, so the entire difference is the payroll tax on the distributed portion.

The arithmetic: saving is roughly 15.3 percent of (net profit minus reasonable salary), for the portion under the wage base, and about 2.9 percent above it. Against that, subtract the added admin: a payroll service and a separate S-Corp return, both of which are FIXED costs that do not scale with profit.

That fixed-cost shape is the whole decision. The saving grows with the gap between profit and salary; the cost of getting it does not. Below a certain profit the admin eats the saving entirely; above it the election compounds year over year. Run your own numbers with your accountant rather than a rule of thumb, because the wage base, the thresholds and the state treatment all move.

When S-Corp election makes sense

Yes if:

• You can defend a "reasonable salary" (IRS scrutiny: salary must be reasonable for the work performed)
• You're committed to running payroll properly

Probably not if:

• You're a brand-new business uncertain of profit
• You don't want payroll admin complexity

Maybe not yet if:

• Profit is close to the point where the fixed admin cost cancels the payroll-tax saving
• This year's profit is unusually high or unusually low and not representative
• You are mid-way through a year and the election timing would only capture part of it
• Your books are not clean enough to defend a salary figure under scrutiny

Reasonable salary (the IRS scrutiny point)

S-Corp election requires the owner-employee to pay themselves a "reasonable salary" - not zero, not minimum wage. The IRS uses this rule to prevent owners from skipping FICA tax by taking a token salary and running the rest out as distributions.

What's "reasonable"? Comparable wages for similar work at similar businesses. For most service-business owners:

• Average tech wage in their market for someone with their skill level
• Industry comparable for similar-size company
• Documented logic + supporting comp data

Aim for 30 - 50% of net income as salary, balance as distribution. Be conservative (higher salary) if you want low IRS attention; be aggressive (lower salary) only if you have strong documentation.

CPA can help size the salary defensibly.

Liability protection - what it ACTUALLY does

Creditors of the business generally can't reach personal assets. Exceptions ("piercing the veil"): personal guarantee on loans, co-mingled funds, fraud / negligence / criminal acts, owner's direct personal involvement, inadequate capitalization.

Works best with: separate bank account (mandatory), separate credit card (mandatory), no co-mingling, adequate insurance, proper paperwork (annual reports, operating agreement). Meaningful but not absolute - backstop to good insurance, not replacement.

State considerations

CA: annual franchise tax on every LLC and corporation regardless of profit, plus a gross-receipts fee above a threshold. TX: no state income tax; franchise tax applies only above a revenue threshold most small shops sit under. NY: LLCs must satisfy a newspaper publication requirement in the county of formation, which is a real one-time cost and is far higher in some counties than others. FL: low cost, popular for relocation. Operate in multiple states = register as foreign entity in each.

Cost summary

Costs fall into three buckets: one-time setup, fixed annual maintenance, and variable professional fees. Setup is the smallest of the three and the one everybody focuses on.

One-time, at formation

• State filing fee for the articles of organization or incorporation. Varies enormously by state, from nominal to several multiples of the cheapest states.
• Operating agreement or bylaws. Free from a template, or attorney time if the ownership is anything other than one person.
• EIN from the IRS, which costs nothing. Anyone charging for it is reselling a free form.
• Business licenses and trade licenses, which are the same either way and unrelated to entity choice.

Fixed annual, regardless of revenue

• Registered agent, if you do not serve as your own.
• State annual report or franchise fee. Some states charge a flat amount, some scale with revenue or capital, and a few charge nothing. This is the biggest state-to-state swing in ongoing cost.
• Separate business bank account fees.

Variable, driven by structure

• Bookkeeping. Same work either way if you were keeping proper books, which you should be.
• Tax return preparation. A single-member LLC files on the owner's personal return, so the incremental cost is small. An S-Corp requires its own return, which typically runs a meaningful multiple of what a personal return alone costs. A C-Corp is the most expensive to prepare and adds the second layer of tax.
• Payroll. The S-Corp election makes payroll mandatory for the owner-employee. A payroll service is a modest fixed monthly cost, but it is a real recurring obligation with real penalties for missed filings.

The shape of the decision. S-Corp administrative cost is roughly fixed. The tax savings scale with profit. That means there is a profit level below which the election costs more than it saves, and above which it saves steadily more every year. That crossover point is what a CPA should size for a specific operator, using their actual profit, their state's fees, and a defensible salary figure.

Two costs operators forget. The first is their own time on payroll deadlines and corporate formalities, which is not zero. The second is the cost of doing it wrong: missed payroll filings, a salary the IRS later calls unreasonable, or lapsed state filings that administratively dissolve the entity and quietly remove the liability protection they were paying for.

The transition: LLC to S-Corp election

You don't need to dissolve + recreate. File IRS Form 2553 (the S-Corp election). Best timing:

• Filed by March 15 for current tax year
• Filed for late-year start (October - December): file Form 2553 + appropriate retroactive election letters
• CPA handles this paperwork

Most contractors switch from LLC default to S-Corp election in year 2 - 4 once profit is consistent.

Multi-entity (holding company)

At M+ revenue OR specific risk concerns: holding LLC owns operating LLC + real estate LLC. Operating leases from real estate LLC. Appreciation outside liability exposure. Below M, complexity exceeds benefit.

References

• IRS Form 2553 (S-Corp election)
• IRS Publication 535 (Business Expenses)
• IRS Publication 542 (Corporations)
• State Secretary of State filing requirements (varies)
• Manuall internal: Self-Employment Tax + Quarterly Estimated Payments, QuickBooks Setup for Service Business