About SoleProprietorshipVsLLC.com
An independent, math-first reference for the sole proprietorship vs LLC decision. Primary sources, vendor-bias warning, transparent methodology. Not legal or tax advice.
Why this site exists
Search the literal head term and the top ten results are LLC formation services (LegalZoom, ZenBusiness, Northwest Registered Agent), large CPA-blog brands (NerdWallet, US Chamber, Wolters Kluwer, Investopedia), or state-bar referral sites. The formation services earn a $20 to $75 commission every time a reader files an LLC through their checkout. The CPA blogs sell tax-prep packages downstream. There is no large, independent comparison surface that says clearly: for a side hustle under $30,000 a year with no employees and no liability-heavy work, an LLC usually costs more than it protects.
The site exists to fill that gap. Every page is built around primary sources: IRS Publication 334 (Tax Guide for Small Business), IRS Publication 3402 (LLC tax classification), Form 1040 Schedule C, Schedule SE, Form 2553 with Rev Proc 2013-30 late-relief, Form 1065 and Form 8832 for multi-member and check-the-box elections. Statutory anchors come from Cornell Legal Information Institute: IRC 7701(a)(3) (check-the-box), IRC 1402 (SE tax), IRC 199A (QBI deduction), IRC 1361 (S-Corp eligibility). State-level data comes from the Secretary of State filing pages in each state (California, New York, Delaware, Texas, Florida named, with the cost-comparison hub aggregating all 50 + DC). SBA.gov sits underneath as the federal-level small-business-policy anchor.
Where the literature disagrees (single-member LLC veil-piercing case law varies by state, California gross receipts thresholds change periodically, the OBBBA QBI permanence applies federally but state conformity is mixed), the site shows both ends of the range and names the source, rather than presenting a confident single number.
Who builds this
Built by Oliver Wakefield-Smith at Digital Signet, an independent research and consulting practice. The site is part of a small portfolio of independent reference sites covering small-business and tax decisions where formation-vendor / CPA-blog conflicts make the literature unreliable.
LLCvsSCorp.com
Tax-classification election: LLC default vs S-Corp election, reasonable salary, break-even math.
CCorpVsSCorp.com
C-Corp vs S-Corp for VC-backed and high-growth ventures. QSBS Section 1202, retained earnings, AET.
SoleProprietorVsLLC.com
Directional twin covering the same decision under the singular-noun spelling.
EffectiveTaxRateCalculator.com
Federal + state effective tax rate calculator for self-employed taxpayers.
BusinessInsuranceCost.com
Small-business general liability and professional liability insurance pricing context.
GustoPricing.com
S-Corp payroll provider pricing reference (Gusto vs Rippling vs ADP).
Editorial position
This is a reference site, not a CPA firm, tax-attorney practice, or LLC formation reseller. We earn nothing from recommending sole proprietorship and nothing from recommending the state you live in. On the one affiliate-disclosed page (/formation-services), we list five providers compared on 5-year total cost, with the disclosure in a banner at the top of the page rather than buried in a footer.
Where the answer for a typical reader is "stay sole proprietor," we say so. Where it is "form an LLC but do not bother with S-Corp until $75k+ net profit," we say so. Where it is "you should be a C-corp because you are raising venture capital," we hand off to the sister site that covers that decision properly. The job of the site is to give a defensible recommendation, not to push a transaction.
What this site covers
Home
The headline sole prop vs LLC decision, SE tax calculator, comparison table, and quick orientation.
Tax Differences
Schedule C pass-through math, SE tax (15.3% capped at SS wage base), QBI 199A, S-Corp election preview.
S-Corp Election
Form 2553 mechanics, break-even by income tier, Rev Proc 2013-30 late-relief, reasonable salary requirement.
Liability Protection
Six piercing-the-veil triggers, single-member LLC vulnerabilities, when insurance is the better lever.
Operating Agreement
Why single-member LLCs need one, the 5 states that require one by statute, 10 core sections, free templates.
LLC Cost by State
All 50 states + DC LLC filing and annual fees, the Delaware/Wyoming/Nevada out-of-state myth math.
When to Switch
Seven concrete trigger points for converting sole prop to LLC, 10-step conversion procedure.
Decision Framework
Ten business-profile decisions with reasoning: Etsy seller, freelance consultant, SaaS founder, and more.
EIN and Banking
Free IRS EIN process, business bank account with EIN only, best no-fee banks for sole props and LLCs.
Formation Services
Five formation services compared with 5-year total-cost math. Affiliate-disclosed comparison page.
2-Minute Decision Quiz
Six-question quiz with a personalised recommendation. No email gate. Decision logic shown.
Florida State Guide
Florida-specific filing fee, annual report, Sunbiz.org procedure, state veil-protection statute.
California State Guide
California $800 minimum franchise tax, gross receipts fee schedule, year-1 waiver, state PIT.
Texas State Guide
Texas $300 filing, no annual report, franchise tax above $2.47M gross receipts threshold.
Delaware State Guide
Delaware $90 + $300 franchise, Court of Chancery, Series LLC, when it actually pays off.
Wyoming State Guide
Wyoming $100 + $60 annual, member-privacy provisions, strong statutory veil protection.
Methodology
Full primary-source table, calculation framework, refresh cadence, limitations, corrections process.
Editorial principles
Primary sources only
Every claim is anchored to a named primary source: IRS publications and forms (Pub 334, Pub 583, Pub 3402, Form 1040 Schedule C, Schedule SE, Form 2553, Form 1065, Form 8832), Internal Revenue Code sections via Cornell LII (IRC 7701(a)(3), 1402, 199A, 1361), Rev Proc 2013-30, SBA.gov entity guide, each state Secretary of State filing page. Secondary references (Nolo, Wolters Kluwer BizFilings, Bloomberg Tax) appear as cross-references, not authority.
No paid placements on comparison pages
The cost-comparison hub and the 50-state pages are unmonetised. We earn nothing from recommending sole proprietorship, the state you live in, or the cheapest state SoS filing path. The affiliate-monetised page is /formation-services, where the disclosure sits in a top-of-page banner before the recommendations.
Vendor-bias warning shown
Most public articles on this topic are written by LLC formation services (LegalZoom, ZenBusiness, Northwest Registered Agent, Bizee, Tailor Brands). They earn per filing, creating a structural bias toward 'you should form an LLC.' We name this on the home page and flag it on /formation-services. The honest position for many small operations under $30k a year is sole proprietorship with appropriate insurance.
Single-source freshness
All freshness stamps on the site read from one LAST_VERIFIED constant in lib/schema. When fees, statutes, or IRS publications change, the constant moves forward and every page reflects it by construction. No drift between site sections.
Conservative tax math
S-Corp election break-even includes the full compliance overhead (payroll provider, S-Corp tax return on Form 1120-S, reasonable salary defensibility cost). Schedule C examples include the half-of-SE-tax above-the-line deduction. State-specific math accounts for foreign-LLC double registration when out-of-state formation is considered.
Honest about uncertainty
State filing fees change. IRS publications get revised. Tax Court opinions land. Where statute or case-law is in motion (single-member LLC veil piercing in particular states, Series LLC recognition cross-border, post-OBBBA QBI changes), we say so rather than presenting a confident number.
Methodology in brief
Refresh cadence is monthly. The first business week of every month we reread the IRS publications named in the source list (Pub 334, Pub 3402, Pub 583), check the IRC sections on Cornell LII for amendment, scan each state Secretary of State filing page for fee changes, and update the LAST_VERIFIED constant. Out-of-cycle refresh triggers include a new IRS publication revision, a state filing-fee change between cycles, a Tax Court opinion that meaningfully shifts single-member LLC veil-piercing case law, an Internal Revenue Code amendment, and any change to the Social Security wage base (which moves SE tax math).
Calculations use the canonical formulas: SE tax = 15.3% capped at the 2026 SS wage base of $168,600, with the half-of-SE-tax above-the-line deduction applied; QBI 199A 20% deduction with the 2026 phase-out thresholds ($191,950 single / $383,900 MFJ); S-Corp break-even includes payroll-provider cost, Form 1120-S preparation fee, and reasonable-salary defensibility cost (BLS OEWS by industry where data is available). State-specific 5-year math accounts for foreign-LLC double registration when out-of-state formation is considered. Full details and the primary-source table are on /methodology.
Disclosures + corrections
- We are not a CPA firm, tax-attorney practice, or LLC formation reseller. We do not give tax or legal advice. The information on this site is for general guidance and not a substitute for a qualified CPA or business attorney admitted in your state.
- We earn affiliate commissions on /formation-services if you sign up for a service through our links. We disclose this prominently on that page. No other page on the site monetises through affiliate or paid-placement relationships.
- We are not affiliated with the IRS, SBA, any state Secretary of State office, the California Franchise Tax Board, or any LLC formation service. Brand names appear in editorial context (e.g., LegalZoom, Northwest, Mercury, Relay) without implying endorsement.
- Calculator outputs are estimates. SE tax 15.3% capped at the 2026 Social Security wage base ($168,600), QBI 199A phase-out thresholds, state-specific franchise schedules: all sourced and updated, but your real tax bill depends on facts a generic calculator cannot capture.
Corrections
If you find a number that does not match the cited primary source or a state filing fee that has moved, email [email protected] with the page URL, the specific claim, and the primary source we should have cited. We aim to respond within 5 business days.
This site is not a substitute for a licensed CPA or business attorney admitted in your state. For specific tax or legal advice on your situation, consult a qualified professional.