The most common LLC tax question is also the most misunderstood: "what tax rate does an LLC pay?" The honest answer is that a default LLC pays no federal income tax at all, and that is not a loophole. The entity is transparent to the IRS; everything flows through to the humans who own it, where it is taxed at their personal rates plus, for active owners, self-employment tax.
That single design decision drives everything in this guide: which forms get filed, why quarterly estimates exist, why profitable owners eventually elect S-corp status, and why your state may bill your LLC even in a year it loses money.
The Four Tax Classifications of an LLC
The IRS does not have an "LLC" tax category. Every LLC is taxed under one of four regimes, two by default and two by election:
| Classification | How it happens | Return filed | Who pays the tax |
|---|---|---|---|
| Disregarded entity | Default, 1 member | None (Schedule C/E on the owner's 1040) | Owner, at personal rates + SE tax |
| Partnership | Default, 2+ members | Form 1065 + K-1s (informational) | Members, at personal rates + SE tax |
| S corporation | Election, Form 2553 | Form 1120-S + K-1s | Owners; salary via payroll, distributions without SE tax |
| C corporation | Election, Form 8832 | Form 1120 | Entity at 21%; owners again on dividends |
Two details worth pinning down. First, classification changes taxes only: the entity remains an LLC under state law in every case. Second, the default classifications require no paperwork at all; you only file an election to leave them. Full election mechanics and deadlines are in our Form 2553 walkthrough and Form 2553 explainer.
Self-Employment Tax: the Number That Drives Everything
Employees split payroll taxes with their employer. LLC members who work in the business get both halves of that bill: 15.3% self-employment tax on net earnings, composed of 12.4% Social Security up to the annual wage base and 2.9% Medicare with no cap, plus an additional 0.9% Medicare surtax at higher incomes. This lands on top of ordinary income tax.
Three softeners keep the number from being as brutal as it sounds: half of self-employment tax is deductible against income tax, only 92.35% of net earnings are subject to it, and the qualified business income (QBI) deduction lets many pass-through owners deduct up to 20% of qualified profit, subject to income thresholds and phase-outs. Model your own numbers in the self-employment tax calculator.
This tax is also the entire reason the S-corp election exists in small-business planning, covered two sections down.
Quarterly Estimated Taxes
Nothing is withheld from LLC profits, so the IRS collects as you earn through estimated payments. If you expect to owe $1,000 or more for the year, you generally must pay quarterly: April 15, June 15, September 15, and January 15 of the following year. Underpayment triggers a penalty computed like interest, currently pegged to the federal short-term rate plus three points, applied per quarter.
The safe harbor is the practical planning tool: pay at least 100% of last year's total tax (110% if your prior-year AGI exceeded $150,000), spread evenly across the four dates, and no penalty applies regardless of what you actually owe in April. New LLC owners coming from W-2 jobs get caught here constantly; the first profitable year should include a quarterly payment calendar from day one. Our estimated tax guide and payroll calculator cover the mechanics.
The S-Corp Election: When the Math Flips
Once an LLC's profit consistently clears roughly $60,000 to $80,000, the S-corp election usually starts paying for itself. The mechanism: the owner becomes an employee, takes a reasonable salary subject to normal payroll taxes, and receives the remaining profit as distributions that escape the 15.3% self-employment tax entirely.
Worked example. An LLC nets $120,000. As a default LLC, roughly all of it faces self-employment tax: about $16,300 beyond income tax. With an S election and a defensible $70,000 salary, payroll taxes apply to the salary only (about $10,700 combined), and the $50,000 of distributions escape. Gross savings near $5,600, minus payroll service costs, a separate 1120-S return, and possibly higher state fees. Net, the election clears a few thousand dollars a year at this profit level and scales up from there.
The two ways owners burn themselves: setting an unreasonably low salary (the IRS recharacterizes distributions and adds penalties) and electing too early, before profits cover the overhead. Deadline discipline matters too: for an existing LLC the election is generally due by March 15 of the year it should take effect, though late-election relief exists. Full treatment in the complete Form 2553 guide, and the break-even math in the S-corp savings calculator.
State Taxes on LLCs
Federal classification is only half the bill. States tax LLCs in three ways, and they stack:
Entity-level franchise and LLC taxes. California charges every LLC a flat $800 per year regardless of profit, plus a gross-receipts fee starting at $250,000 of revenue. Delaware charges a flat $300 annual tax. Texas requires an annual franchise tax report by May 15, though most small LLCs owe $0 under the no-tax-due threshold. New York imposes an annual filing fee scaled to gross income. The concept is covered in what franchise tax is.
State income tax on the owners. Pass-through profits land on your state return in your resident state, at rates from 0% (Texas, Florida, Wyoming, and the other no-income-tax states) to over 13% (California's top bracket). Several states now offer elective pass-through entity taxes (PTET) that convert the owner's state tax into a deductible entity-level tax, a workaround for the federal SALT deduction cap worth asking a CPA about.
Sales and payroll taxes. Selling taxable goods requires registration and collection wherever you have nexus (see sales tax nexus explained), and the first employee brings withholding, unemployment insurance, and quarterly payroll filings.
Deductions LLC Owners Actually Miss
The tax code is friendlier to LLC owners than most realize. The consistently under-claimed items: the home office deduction (a real deduction with a simplified $5-per-square-foot option, not an audit flag when legitimate), the self-employed health insurance deduction (100% of premiums, above the line), retirement contributions (a solo 401(k) shelters up to $70,000 in 2026 between employee and employer contributions), business mileage at the IRS standard rate, startup and organizational costs (up to $5,000 each deductible in year one, including your formation fees), the QBI deduction, and half of self-employment tax. The full list with thresholds is in small business tax deductions.
The prerequisite for all of it is clean books: a dedicated business account from day one and every expense captured. Deductions missed for lack of records are a pure gift to the IRS.
The LLC Tax Calendar
Extensions move paperwork, not payments: Form 7004 extends the 1065/1120-S filing by six months, and Form 4868 extends the 1040, but tax owed is still due on the original date. State annual reports run on separate calendars entirely; see deadlines by state.
Common LLC Tax Mistakes
Why it happensW-2 instincts: taxes always handled themselves.
ConsequenceA five-figure April bill plus an underpayment penalty accruing like interest.
PreventionSet aside 25-30% of every distribution; pay the safe-harbor amount quarterly.
Why it happensInternet advice sells the election as free money.
ConsequencePayroll service, extra return, and state fees exceed the SE-tax savings at low profit.
PreventionRun the break-even math; elect when profit reliably clears the threshold.
Why it happensEvery salary dollar costs 15.3%, so owners minimize it.
ConsequenceIRS recharacterizes distributions as wages: back payroll taxes plus penalties.
PreventionBenchmark comparable market pay and document the basis.
Why it happens"Pass-through" sounds like the state bills nothing.
ConsequenceCalifornia's $800, Delaware's $300, or a missed Texas franchise report, plus penalties and standing loss.
PreventionCalendar entity deadlines at formation or put the entity on monitoring.
Why it happensBookkeeping feels optional at small scale.
ConsequenceMissed deductions, guessed numbers, and nothing defensible in an audit.
PreventionDedicated bank account plus monthly categorization, even a spreadsheet beats reconstruction.
Why it happensLookalike sites charge for the IRS's free number.
ConsequenceWasted fees; mismatched EINs stall returns and bank accounts.
PreventionUse the IRS directly or a formation package that includes it; see the EIN guide.
Three Tax Years, Three Outcomes
A designer nets $85,000 in her first LLC year and pays nothing until April. The bill: income tax, $12,000 of self-employment tax, and an underpayment penalty on top, because no quarterly estimates were made.
Outcome: Year two she pays the safe-harbor amount quarterly and April becomes a non-event. The estimate calendar is the whole game for new owners.
A part-time LLC elects S-corp status on forum advice at $35,000 profit. Payroll service, a separate 1120-S return, and state registration cost about $2,600 a year; the self-employment tax saved is under $2,000.
Outcome: Net loss until profits grow. The election was revoked, then re-made two years later when the math actually worked.
A California LLC pauses operations for a year and files nothing, assuming no income means no tax. The FTB disagrees: the $800 minimum applies to existence, not activity, and penalties compound it.
Outcome: Idle entities are not free entities. If a venture is done, dissolve it; if it is paused, budget the minimum tax.
One flow-through, four regimes, two calendars
Profits flow to your return and get taxed once, plus self-employment tax until an S election changes the math at scale. Watch the two calendars that owners actually miss: quarterly federal estimates, and your state's entity-level franchise deadlines. Everything else is bookkeeping discipline.
Frequently asked questions
How is an LLC taxed by default?
As a pass-through. A single-member LLC is a disregarded entity: profits go on the owner's Schedule C. A multi-member LLC is taxed as a partnership: it files an informational Form 1065 and issues K-1s. In both cases the LLC itself pays no federal income tax; the owners pay it on their personal returns.
How much is self-employment tax for LLC owners?
15.3% on net self-employment earnings: 12.4% Social Security (up to the annual wage base) plus 2.9% Medicare, with an extra 0.9% Medicare surtax at higher incomes. Half of the tax is deductible. Run your numbers in our self-employment tax calculator.
When does an S-corp election make sense for an LLC?
As a rule of thumb, when net profit consistently clears roughly $60,000 to $80,000. You must pay yourself a reasonable salary through payroll; only the remaining distributions escape the 15.3% self-employment tax. Payroll costs and state rules eat some savings. See our Form 2553 guide.
Do LLCs pay quarterly taxes?
The owners do. Because no employer withholds tax on LLC profits, members generally must pay estimated taxes four times a year (April 15, June 15, September 15, January 15) once they expect to owe $1,000+ for the year. Underpaying triggers an IRS penalty that accrues like interest.
What is franchise tax for an LLC?
A state-level fee for the privilege of existing as an entity, unrelated to franchising. California charges a flat $800 per year, Delaware $300, and Texas requires an annual franchise report even when no tax is owed. See franchise tax explained.
Does an LLC file its own tax return?
It depends on classification. Disregarded single-member LLCs file nothing separate: everything rides on the owner's 1040. Partnership LLCs file Form 1065 (informational only). S-elected LLCs file Form 1120-S, and C-elected LLCs file Form 1120 and pay tax at 21%. State returns vary by state.
Can my LLC deduct health insurance?
Generally yes. Self-employed members can typically deduct 100% of health insurance premiums for themselves and family as an above-the-line deduction, up to business profit, provided no employer-subsidized plan is available. S-elected LLCs run owner premiums through payroll W-2 wages to preserve the deduction.
Get the tax setup right from day one.
EIN filing, S-corp election preparation, and compliance monitoring that tracks every federal and state deadline for your entity. Teach-first guidance, no aggressive upsells.
