Sole Proprietor or LLC: What Actually Changes
Why a single-member LLC changes nothing on your tax return, what it does change, and when forming one is worth the cost and paperwork.
Reviewed by the Fairlight Accounting cross-border tax team — U.S. & Canadian Tax Desks
A single-member LLC is taxed exactly like a sole proprietorship by default: the owner files Schedule C, pays self-employment tax on the profit, and the LLC files no income tax return of its own. What changes is legal, not tax: the LLC separates business liabilities from personal assets, which matters once the business has contracts, employees, or premises.
On this page
What stays the same?
| Item | Sole proprietorship | Single-member LLC (default) |
|---|---|---|
| Income tax return | Schedule C on Form 1040 | Schedule C on Form 1040 |
| Self-employment tax | Yes, on net profit | Yes, on net profit |
| Qualified business income deduction | Available | Available |
| Retirement plans and health insurance deduction | Same | Same |
| Estimated taxes | Quarterly | Quarterly |
The IRS calls the LLC a "disregarded entity." Nothing about rates, deductions, or forms changes until you elect S corporation or C corporation treatment.
What changes?
- Liability. Business debts and lawsuits are generally limited to the LLC's assets, provided you keep the LLC separate — its own bank account, contracts in its name, no commingling.
- Formation and upkeep. Articles of organization (a $125 state fee in Florida, including the registered agent designation), an annual report (due by May 1 each year in Florida — $138.75, plus a $400 late fee after May 1), a registered agent, and a written operating agreement, which is not filed with the state but is worth having even for one member.
- Employer identification number. Required if the LLC has employees, owes certain federal excise taxes, or elects corporate status; otherwise optional, though banks usually want one.
- Name and contracts. Customers, landlords, and lenders deal with the LLC, which builds the record that the entity is real.
When is an LLC worth it?
When the business signs leases or contracts, hires employees or contractors, serves the public in person, carries inventory or vehicles, or earns enough that a claim could threaten personal savings or a home. A hobby-scale side business with minimal risk can wait, though the cost is small relative to the protection.
When should the LLC elect S corporation status?
Once profit comfortably exceeds a reasonable salary for your role and the payroll tax saving outweighs the cost of running payroll and a separate return. The LLC makes that step easy: file Form 2553, with no new entity required.
Frequently asked questions
Does an LLC lower my taxes?
Not by itself. Any saving comes from a later S corporation election, not from the LLC.
Do I need a separate bank account?
Yes. Mixing funds is one of the main reasons courts disregard an LLC's liability shield.
Does Florida tax LLCs?
Florida has no personal income tax, and a single-member LLC taxed as a sole proprietorship pays no Florida income tax. Annual report and local business tax obligations still apply.
Can my spouse and I own the LLC together?
Yes, but a two-member LLC is a partnership for tax, filing Form 1065, unless you live in a community property state and elect otherwise. Florida is not a community property state.
Official sources
The IRS explains: “For income tax purposes, an LLC with only one member is treated as an entity disregarded as separate from its owner, unless it files Form 8832 and affirmatively elects to be treated as a corporation. However, for purposes of employment tax and certain excise taxes, an LLC with only one member is still considered a separate entity.” — Internal Revenue Service, Single member limited liability companies, https://www.irs.gov/businesses/small-businesses-self-employed/single-member-limited-liability-companies
The Florida Division of Corporations explains: “An annual report must be filed each year for your business entity to maintain an "active status" with the Department of State.” — Florida Department of State, Division of Corporations, File Annual Report, https://dos.fl.gov/sunbiz/manage-business/efile/annual-report/
Next step
Fairlight Accounting handles U.S. domestic, cross-border (U.S.–Canada), and international tax returns, plus bookkeeping, payroll, and CFO advisory. Our U.S. Tax Desk sets up new LLCs with the bank, payroll, and election decisions made at the same time. See pricing or book a free fit call.
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U.S. and Canadian filings prepared together by our U.S. and Canadian Tax Desks.
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