LLC Pass-Through Taxation: The Complete 2026 Guide
LLC pass-through taxation is the default tax treatment for every LLC in the country — it's why your business itself never files an income tax return, and why every dollar of profit shows up on your personal Form 1040 instead. Here's exactly how it works, what it costs you in self-employment tax, and the 2026 rules that just changed under the One Big Beautiful Bill Act.
LLC pass-through taxation means the LLC itself pays no federal income tax. Profits and losses instead "pass through" directly to the owners, who report them on their personal tax returns. A single-member LLC is taxed as a disregarded entity (Schedule C); a multi-member LLC is taxed as a partnership (Form 1065, with K-1s issued to each member). Owners then pay federal self-employment tax (15.3%) on active business income, plus their individual income tax rate, though many qualify for the 20% Qualified Business Income (QBI) deduction under Section 199A — made permanent by the One Big Beautiful Bill Act (OBBBA), signed July 4, 2025.
- LLC federal income tax (default)
- None — passes through to owners
- Single-member LLC default
- Disregarded entity (Schedule C)
- Multi-member LLC default
- Partnership (Form 1065 + K-1s)
- Self-employment tax
- 15.3% on active business income
- QBI deduction (Section 199A)
- 20% — permanent under OBBBA
- 2026 Social Security wage base
- $184,500
What LLC Pass-Through Taxation Means
LLC pass-through taxation is the default federal tax treatment for every Limited Liability Company in the United States. Unlike a C-corporation, which pays its own corporate income tax and then taxes shareholders again on dividends, an LLC is not a separate taxpayer at all — as far as the IRS is concerned, the LLC is invisible for income tax purposes unless the owners actively choose otherwise. Profit and loss instead pass through directly to the individual members, who report that income (and pay tax on it) on their own personal returns, whether or not any cash was actually distributed to them that year.
This is the single most important distinction to understand about LLC pass-through taxation: the entity provides liability protection, but by default it contributes nothing to how the profit is taxed. That tax treatment flows from your member count and any elections you file with the IRS — not from the fact that you formed an LLC at all. Understanding LLC pass-through taxation correctly, from day one, is what lets you plan around it instead of being surprised by it at tax time.
The core idea of LLC pass-through taxation, in one sentence: an LLC taxed on a pass-through basis pays $0 in federal entity-level income tax — profit is taxed exactly once, on the owners' personal returns, at their individual tax rates, instead of once at the corporate level and again when distributed.
Default LLC Tax Classifications
The IRS doesn't have a tax category called "LLC." Instead, LLC pass-through taxation is applied automatically based on how many members the LLC has, unless the owners file paperwork to elect something different.
Single-member LLC: disregarded entity
By default, a one-owner LLC is treated as if it doesn't exist separately from its owner for federal tax purposes. Business income and expenses are reported on Schedule C (or Schedule E/F for certain rental or farm activities), attached to the owner's personal Form 1040. There's no separate business tax return.
Multi-member LLC: partnership
An LLC with two or more members is automatically taxed as a partnership. The LLC files an informational return, Form 1065, reporting total income and expenses — but pays no tax itself. Each member then receives a Schedule K-1 showing their share of profit, loss, and other tax items, which they report on their personal return.
Community property exception
In community property states, a married couple who jointly own an LLC can sometimes elect to be treated as a single-member disregarded entity for simplicity, rather than defaulting to partnership treatment — confirm this option with a CPA if it applies to your situation.
Neither of these defaults requires filing anything with the IRS to activate — pass-through taxation is simply what happens automatically. The only IRS paperwork most pass-through LLCs file is a Form SS-4 for their EIN and their normal annual return (Schedule C or Form 1065).
Self-Employment Tax on Pass-Through Income
This is the part of LLC pass-through taxation that surprises new business owners the most: income tax isn't the only federal tax you owe on your share of the profit. Active LLC members also owe self-employment tax — the self-employed person's version of Social Security and Medicare tax, normally split between an employer and employee, but paid in full by anyone who is their own boss.
- Rate: 15.3% — 12.4% for Social Security plus 2.9% for Medicare, applied to 92.35% of net self-employment earnings.
- 2026 Social Security wage base: $184,500 — up from $176,100 in 2025. The 12.4% Social Security portion only applies up to this amount; the 2.9% Medicare portion has no cap.
- Additional 0.9% Medicare surtax applies to self-employment income above $200,000 (single) or $250,000 (married filing jointly).
- Half is deductible — you deduct 50% of your self-employment tax as an above-the-line adjustment on Schedule 1, reducing your adjusted gross income.
Every dollar of active pass-through profit is subject to self-employment tax by default — unlike a C-corp shareholder-employee, who only pays payroll tax on their actual W-2 salary, not on corporate profit. This is the trade-off at the heart of LLC pass-through taxation, and it's exactly the gap an S-Corp election is designed to narrow. Full mechanics in our self-employment tax for LLCs guide.
The QBI Deduction (Section 199A) in 2026
The single biggest federal tax benefit built specifically for pass-through business owners is the Qualified Business Income (QBI) deduction, also called the Section 199A deduction. It lets eligible owners deduct up to 20% of their qualified business income before calculating income tax — a benefit C-corp owners don't get, since it was designed to help level the playing field after the Tax Cuts and Jobs Act cut the corporate rate to a flat 21%.
What changed for 2026: the QBI deduction was originally set to expire after December 31, 2025. The One Big Beautiful Bill Act (OBBBA), signed July 4, 2025, made the 20% deduction permanent — there is no longer a sunset date. Starting with 2026 returns, OBBBA also adds a new $400 minimum deduction for taxpayers with at least $1,000 of QBI from a trade or business in which they materially participate, and it widens the phase-in ranges to $75,000 (single) and $150,000 (married filing jointly), up from the original TCJA ranges.
| 2026 QBI Threshold | Single Filers | Married Filing Jointly |
|---|---|---|
| Full 20% deduction below | $201,750 | $403,500 |
| Phase-out completes (SSTBs lose deduction entirely) | $276,750 | $553,500 |
| New minimum deduction (if QBI ≥ $1,000) | $400, indexed for inflation after 2026 | |
Above the full-deduction threshold, two limitations can reduce or eliminate your QBI deduction: a W-2 wage and capital limitation (the deduction can be capped based on wages paid and depreciable property owned by the business), and, for specified service trades or businesses (SSTBs) — law, accounting, consulting, health, financial services, and similar fields — the deduction phases out entirely once income clears the upper threshold. A landscaping company or e-commerce retailer generally isn't an SSTB and doesn't face this cliff; a solo consulting or law practice usually is.
Changing Your Tax Classification
LLC pass-through taxation is the default, but it isn't mandatory. Every LLC can elect a different federal tax classification by filing the appropriate IRS form — without ever changing its actual legal structure at the state level.
Stay pass-through (do nothing)
The overwhelming majority of LLCs simply keep the default classification — disregarded entity or partnership — and never file an entity classification election at all.
Elect S-Corporation status (Form 2553)
Remains pass-through for income tax purposes, but changes how self-employment tax applies — covered in depth below.
Elect C-Corporation status (Form 8832)
Exits pass-through taxation entirely. The LLC becomes its own taxpayer, filing Form 1120 and paying the flat 21% corporate rate — with double taxation on any dividends distributed to owners.
Both elections change only how the IRS taxes your LLC — your state-level LLC registration, your operating agreement, and your liability protection remain completely unaffected either way.
The S-Corp Election: Narrowing the Self-Employment Tax Gap
An S-Corp election is the most common way LLC owners reduce their self-employment tax exposure while remaining a pass-through entity. Instead of every dollar of profit being subject to the full 15.3% self-employment tax, an S-Corp-elected LLC pays its owner-employees a reasonable salary (subject to standard payroll tax) and distributes remaining profit as distributions, which escape self-employment tax entirely.
- File Form 2553 — not Form 8832, which is the C-Corp election. This is a common, costly mix-up.
- Typical break-even: $60,000–$80,000 of consistent annual profit — below this range, the added cost of payroll processing and a separate corporate tax return usually outweighs the self-employment tax savings.
- "Reasonable salary" is an IRS-scrutinized number — it must genuinely reflect fair market compensation for the work performed, not an artificially low figure designed purely to minimize payroll tax.
- You still file a business return — Form 1120-S, plus K-1s to each shareholder-employee, adding real accounting cost.
The S-Corp election is still pass-through taxation in every meaningful sense — the entity itself pays no federal income tax, and profit still flows to the owners' personal returns. What changes is purely the self-employment tax exposure on that profit. Full walkthrough, including how to model your own break-even point, in our LLC taxed as S-Corp guide.
State Pass-Through Entity Tax (PTET) Elections
Beyond federal considerations, most states now offer LLC owners a genuinely valuable planning tool: the Pass-Through Entity Tax (PTET) election, sometimes called a SALT cap workaround. More than 30 states have enacted some version of this election.
How it works: normally, individuals can only deduct a limited amount of state and local taxes (SALT) on their federal return — a cap that the One Big Beautiful Bill Act raised from $10,000 to $40,000 for 2025, rising to $40,400 for 2026 and increasing roughly 1% annually through 2029 (reverting to $10,000 in 2030). That expanded cap phases out for taxpayers with modified adjusted gross income above roughly $500,000, eventually falling back to the original $10,000 floor. A PTET election sidesteps this limitation entirely: the LLC itself pays state income tax at the entity level, deducting the full amount on its federal return with no cap and no phase-out — while owners receive an offsetting state tax credit on their personal return.
Because PTET operates at the entity level, it remains valuable even for owners who now fall under the higher personal SALT cap, and it's often the only real option for high earners above the phase-out threshold. Availability, mechanics, and deadlines vary meaningfully by state — some require quarterly payments, others a single annual election — so this genuinely deserves a conversation with a CPA licensed in your specific state before you assume it applies to your situation.
LLC Pass-Through Taxation vs. C-Corp: Side by Side
Seeing LLC pass-through taxation laid out next to the C-Corp alternative makes the trade-offs concrete:
| Feature | Pass-Through LLC (Default) | C-Corp Election |
|---|---|---|
| Entity-level federal tax | None | 21% flat corporate rate |
| Tax on distributed profit | Once, on owner's personal return | Twice — corporate tax, then dividend tax |
| Self-employment tax | Yes, on active income | No — only on actual W-2 wages |
| QBI deduction (20%) eligible? | Yes, if under thresholds | No — C-corps don't qualify |
| Losses | Generally deductible against other income | Trapped at the corporate level |
| Best suited for | Most small and mid-size LLCs | Heavy reinvestment, outside investors, eventual IPO |
For most LLCs, LLC pass-through taxation is genuinely the more favorable default — it avoids double taxation and preserves the QBI deduction. C-Corp status becomes more attractive mainly when a business is reinvesting essentially all its profit rather than distributing it, or when outside investors specifically require corporate structure.
Pass-Through Tax Estimator
LLC Pass-Through Tax Estimator
Models self-employment tax + the 2026 QBI deduction · single-member default LLC · educational estimate
Ahmad Adil's Take: LLC pass-through taxation is genuinely one of the best default deals in the entire U.S. tax code for a small business owner — no entity-level tax, no double taxation, and now a permanent 20% deduction on top of it thanks to the OBBBA. The part I want every founder to actually plan around, not just learn about, is self-employment tax: it's the cost that catches new owners off guard every single year, because it shows up as a real bill even in years the income tax bracket math looks favorable. If your profit is consistently clearing $60,000–$80,000, that's exactly the point to sit down with a CPA and actually run the S-Corp numbers rather than assuming pass-through-as-is is still your best option — and if you're in a high-tax state, ask that same CPA about a PTET election in the same conversation. These aren't decisions to make once and forget; revisit them every year as your numbers change.
Sources
This guide draws on current IRS guidance and the enacted text of the 2025 tax legislation. For the primary source material: the IRS's own overview of how the IRS classifies LLCs, the official instructions for Form 1065, and the IRS's Qualified Business Income deduction overview covering Section 199A.
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LLC Pass-Through Taxation — FAQ
Ahmad Adil is the founder and CEO of LLC School. The figures here — the 15.3% self-employment tax rate, the 2026 Social Security wage base, and the permanent 20% QBI deduction under the One Big Beautiful Bill Act — reflect current IRS guidance and enacted federal legislation. This is educational content, not legal or tax advice.
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