The main tax benefits of an LLC are pass-through taxation, the freedom to elect S-corporation or C-corporation treatment instead, a 20% qualified business income deduction, flexible profit and loss allocations among owners, and full access to business expense and retirement plan deductions. Together, these features let most owners pay less federal tax than they would running the same business as a traditional corporation, and they give you room to change your tax treatment as the business grows.
Pass-Through Taxation by Default
The IRS does not have a tax category called “LLC.” A single-member LLC is treated as a disregarded entity, meaning the owner and the business are the same taxpayer for income tax purposes.1Internal Revenue Service. Single Member Limited Liability Companies A multi-member LLC is automatically classified as a partnership.2Internal Revenue Service. Limited Liability Company (LLC)
Under either default, the LLC itself pays no federal income tax. Profits and losses flow through to the members’ personal returns. Single-member owners typically report business income on Schedule C of Form 1040. Multi-member LLCs file a partnership return on Form 1065 and issue each member a Schedule K-1 showing that member’s share of income, deductions, and credits.3Internal Revenue Service. LLC Filing as a Corporation or Partnership Rental real estate income is reported on Schedule E, and farming income on Schedule F.4Internal Revenue Service. Instructions for Schedule C (Form 1040) (2025)
Pass-through treatment avoids the double taxation built into a standard C-corporation, where profits are taxed at the corporate level and then again as dividends when they reach shareholders. One catch worth knowing up front: you owe tax on your share of the LLC’s profits whether or not you actually take the money out. If the business reinvests every dollar, your allocated share is still taxable income for the year.
Self-Employment Tax and What Offsets It
Pass-through income from an LLC is generally subject to self-employment tax, which funds Social Security and Medicare at a combined 15.3% rate: 12.4% for Social Security plus 2.9% for Medicare.5Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes) The Social Security portion only applies to the first $184,500 of net self-employment earnings in 2026.6Social Security Administration. 2026 Cost-of-Living Adjustment (COLA) Fact Sheet The Medicare portion has no ceiling, and an extra 0.9% Medicare tax kicks in on self-employment income above $200,000 (single) or $250,000 (married filing jointly).
The tax code softens the hit in one important way. You can deduct the employer-equivalent half of your self-employment tax (7.65%) when calculating adjusted gross income. That deduction lowers your income tax, though it doesn’t reduce the self-employment tax bill itself.5Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes) Because no employer is withholding for you, you’ll also need to make quarterly estimated payments to cover income and self-employment tax combined.7Internal Revenue Service. Form 1040-ES – Estimated Tax for Individuals
The 20% Qualified Business Income Deduction
LLC owners who take pass-through income can deduct up to 20% of their qualified business income (QBI) under Section 199A. The deduction was originally set to expire after 2025 but was made permanent by the One Big Beautiful Bill Act. Starting in 2026, any taxpayer with at least $1,000 in QBI from an active business gets a minimum deduction of $400, even if 20% of their income would produce less.
The full 20% is available without restriction if total taxable income is below roughly $200,000 for single filers or $400,000 for joint filers. Above those figures the deduction phases out over a range of $75,000 (single) or $150,000 (joint), and for certain business types it can disappear entirely.
The phase-out is harshest for specified service trades: health care, law, accounting, consulting, financial services, and performing arts.8Internal Revenue Service. Instructions for Form 8995 (2025) If your LLC is in one of those fields and your income clears the top of the phase-out range, the deduction goes to zero. Non-service businesses at the same income levels face limits tied to W-2 wages paid and business property values, but the deduction isn’t eliminated outright.
To put numbers on it: a single-filer LLC owner with $120,000 in qualified business income could deduct $24,000 from taxable income, saving several thousand dollars in federal tax depending on the bracket.
Electing S-Corporation Treatment to Cut Payroll Tax
An LLC can file Form 2553 to be taxed as an S-corporation.9Internal Revenue Service. S Corporations The election doesn’t change the entity under state law. It changes how the IRS treats the income, and for a profitable business the change can meaningfully lower the self-employment tax bill.
Under an S-corp election, you split business income into a salary you pay yourself as an employee and distributions of remaining profit. Only the salary is subject to the 15.3% payroll tax. Distributions are not. On $100,000 of business earnings with a $60,000 salary, the remaining $40,000 taken as distribution avoids roughly $6,120 in payroll tax.5Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)
The IRS requires the salary to be “reasonable” for the work you do. Setting it too low is a familiar audit trigger. The agency weighs your training and experience, the time you devote to the business, what similar roles pay elsewhere, and how much of the revenue comes from your personal effort versus capital or other employees.10Internal Revenue Service. S Corporation Compensation and Medical Insurance Issues
The election adds administrative overhead. You have to run payroll, file quarterly payroll tax returns, and file Form 1120-S each year. For lower-profit businesses those costs can wipe out the savings, so the election tends to pay off mainly for LLCs consistently earning well above $50,000 to $60,000 in annual profit.
Electing C-Corporation Treatment
An LLC can also file Form 8832 to be taxed as a C-corporation, in which case the business pays a flat 21% federal corporate rate on its profits.3Internal Revenue Service. LLC Filing as a Corporation or Partnership11Internal Revenue Service. Publication 542 (01/2024), Corporations This route is uncommon for small businesses because it brings back double taxation: the entity pays corporate tax on profits, then members pay individual tax again when profits come out as dividends.
C-corp treatment can still work for a business that plans to retain most of its earnings for growth. The IRS imposes a 20% accumulated earnings tax on corporations that stockpile profits beyond the reasonable needs of the business, though. Accumulations up to $250,000 are presumed reasonable for most companies; the threshold drops to $150,000 for personal service businesses like accounting, law, and consulting.11Internal Revenue Service. Publication 542 (01/2024), Corporations Weigh those limits against the lower entity-level rate before making the switch.
Flexible Profit and Loss Allocations
Multi-member LLCs taxed as partnerships can divide profits and losses among members in proportions that differ from ownership percentages. A corporation has to pay dividends in line with share ownership. An LLC’s operating agreement can send a bigger cut of profits to a member who does more of the work, or steer early losses toward the member best positioned to use them.
These are called special allocations, and the IRS respects them only if they have “substantial economic effect.” In practice, the allocation must actually change how much money each member receives, not merely shuffle tax liability between members in different brackets.12Office of the Law Revision Counsel. 26 USC 704 – Partners Distributive Share If the IRS decides an allocation is a paper-only maneuver, it can reallocate the income based on each member’s real economic stake. Documenting the business reason for any special allocation in the operating agreement matters.
Business Deductions LLC Owners Can Stack
Operating through a formal entity puts a clean line between personal and business finances, which makes legitimate deductions easier to claim. Business expenses cut your gross revenue before what’s left flows through to your personal return, so each dollar of deduction lowers both income tax and self-employment tax.
Startup Costs
A new business can deduct up to $5,000 in startup costs in its first year of operation, as long as total startup expenses stay under $50,000. Between $50,000 and $55,000, the $5,000 allowance is reduced dollar-for-dollar by the amount over $50,000. Anything you can’t deduct up front is amortized over 15 years.13Office of the Law Revision Counsel. 26 USC 195 – Start-up Expenditures
Equipment and Property
Rather than depreciating equipment over years, LLC owners can often deduct the full cost the year it’s placed in service. Two provisions do the heavy lifting. Section 179 expensing lets you immediately deduct up to $2,560,000 in qualifying equipment, vehicles, and software costs for 2026, with the deduction phasing out once total equipment purchases exceed $4,090,000. Bonus depreciation was restored to 100% by the One Big Beautiful Bill Act for qualifying property acquired and placed in service after January 19, 2025; it has no investment ceiling and can create a net loss, which makes it useful for capital-intensive businesses. Qualifying property under both provisions generally covers tangible equipment, machinery, off-the-shelf software, and certain improvements to nonresidential buildings. Land and buildings themselves don’t qualify.
Health Insurance Premiums
Self-employed LLC members can deduct 100% of health, dental, vision, and qualifying long-term care insurance premiums for themselves, a spouse, and dependents. It’s an adjustment to income on Schedule 1 of Form 1040, so you get it even if you don’t itemize.14Internal Revenue Service. Instructions for Form 7206 (2025) The deduction isn’t available for any month in which you were eligible for a plan subsidized by your own or your spouse’s employer.
Home Office
If you use a dedicated space in your home regularly and exclusively for business, you can claim the home office deduction. The simplified method allows a flat $5 per square foot up to 300 square feet, capping the deduction at $1,500. The actual expense method takes the percentage of the home used for business and applies it to real costs like rent, utilities, and insurance.15Internal Revenue Service. Simplified Option for Home Office Deduction
Retirement Contributions
Retirement plans double as some of the largest deductions available to LLC owners. A SEP IRA lets you contribute the lesser of 25% of net self-employment earnings or $69,000 for 2026, with minimal paperwork.16Internal Revenue Service. SEP Contribution Limits (Including Grandfathered SARSEPs) A Solo 401(k), available if you have no employees other than a spouse, lets you defer up to $24,500 as the employee for 2026 and add employer profit-sharing contributions of up to 25% of compensation, with a combined cap of $69,000 (or $73,500 if you’re 50 or older).17Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500 For a high-earning owner, maxing out a Solo 401(k) can pull tens of thousands of dollars out of taxable income in a single year.
State Taxes Are a Separate Question
None of the federal benefits above exempt an LLC from state taxes. Many states charge their own entity-level tax on LLCs, whether as a franchise tax, gross receipts tax, flat annual fee, or some combination. These charges apply whether the LLC earned a profit or not, and they vary widely in structure and cost. Federal pass-through savings can be real while a state still sends a bill, so check what your state assesses before you count on the numbers above.