The tax benefits of an LLC start with a choice most other business structures don’t offer: you decide how the IRS taxes your company. By default, profits skip entity-level federal tax and flow to your personal return, which avoids the double taxation a traditional corporation faces. From there, you can elect S corporation status to cut self-employment tax, or C corporation status to lock in a 21% rate on retained earnings. On top of whichever classification you choose, most LLC owners can deduct up to 20% of their business income under a provision that was made permanent in 2025.
Pass-Through Taxation by Default
The IRS doesn’t treat an LLC as its own tax category. A single-member LLC is a “disregarded entity,” taxed like a sole proprietorship. A multi-member LLC defaults to partnership treatment.1Internal Revenue Service. LLC Filing as a Corporation or Partnership Under either default, your LLC’s profits aren’t taxed at the business level. Income passes through to your personal return, where you pay tax once at your individual rate.
The benefit is avoiding double taxation. A traditional C corporation pays tax on its profits, and shareholders pay tax again when those profits are distributed as dividends. Pass-through treatment skips the corporate-level tax, which for most small businesses means a lower total tax bill.
Losses pass through too. If your LLC loses money in a given year, those losses generally appear on your personal return and can offset other income like wages or investment gains, provided you materially participate in the business. That matters in early years when startup costs often exceed revenue.
The 20% Qualified Business Income Deduction
Section 199A of the tax code lets LLC owners who aren’t taxed as C corporations deduct up to 20% of their qualified business income from taxable income.2Office of the Law Revision Counsel. 26 USC 199A – Qualified Business Income Originally set to expire after 2025, the deduction was made permanent by the One Big Beautiful Bill Act, signed into law on July 4, 2025.3Internal Revenue Service. One, Big, Beautiful Bill Act – Tax Deductions for Working Americans and Seniors
The math is straightforward. If your LLC generates $150,000 in qualified business income, you can deduct up to $30,000 before applying your marginal rate. In the 24% bracket, that’s $7,200 saved.
Income Thresholds
The deduction is simplest for LLC owners with taxable income below roughly $201,750 (single) or $403,500 (married filing jointly) in 2026. Below those thresholds you generally qualify for the full 20% regardless of business type. Above them, limits kick in based on the W-2 wages your business pays and the value of its qualified property.
Service Businesses Face Stricter Limits
If your LLC operates in health care, law, accounting, consulting, financial services, performing arts, or athletics, it’s classified as a specified service trade or business. Once taxable income passes the thresholds above, the deduction phases out over a $75,000 range for single filers or $150,000 for joint filers. Above those ceilings, specified service businesses lose the deduction entirely.2Office of the Law Revision Counsel. 26 USC 199A – Qualified Business Income Engineering and architecture were specifically excluded from the service category, so those firms keep the deduction at higher income levels as long as they meet the wage and property tests.
Cutting Self-Employment Tax With an S Corporation Election
Under default pass-through treatment, you owe 15.3% self-employment tax on net business earnings: 12.4% for Social Security and 2.9% for Medicare.4Office of the Law Revision Counsel. 26 USC 1401 – Rate of Tax The tax applies to 92.35% of net self-employment income.5Internal Revenue Service. Topic No. 554, Self-Employment Tax The Social Security portion caps at $184,500 in earnings in 2026; Medicare has no cap.6Social Security Administration. What Is the Current Maximum Amount of Taxable Earnings for Social Security You can deduct half of what you pay when calculating adjusted gross income.
For a profitable LLC, that’s often the single largest federal tax obligation. Electing S corporation status is the standard way to shrink it. You file Form 2553 with the IRS, and the LLC’s income splits into two buckets: a reasonable salary subject to employment taxes, and distributions of remaining profit that aren’t.7Internal Revenue Service. S Corporations
On $120,000 of net profit with a $70,000 salary, the $50,000 in distributions avoids the 15.3% employment tax, saving roughly $7,650.
The Reasonable Salary Rule
The savings only hold if the salary is defensible. The IRS requires S corporation owner-employees to pay themselves a reasonable salary for the work they actually perform.8Internal Revenue Service. S Corporation Employees, Shareholders and Corporate Officers There’s no bright-line formula. The IRS and courts weigh your training and experience, duties, hours devoted to the business, comparable pay for similar work, and the company’s dividend history.9Internal Revenue Service. Wage Compensation for S Corporation Officers Set the salary too low and the IRS can reclassify distributions as wages.
Payroll Costs Eat Into the Savings
Electing S corporation status means running payroll. You file Form 941 quarterly and Form 940 annually for federal unemployment tax.7Internal Revenue Service. S Corporations Most owners hire a payroll service, which typically runs $30 to $80 per month. The election works best for businesses netting at least $40,000 to $50,000 above a reasonable salary, where the tax savings comfortably exceed those costs.
Electing C Corporation Status for Retained Earnings
Some LLC owners elect C corporation taxation by filing Form 8832.10Internal Revenue Service. About Form 8832, Entity Classification Election The draw is a flat 21% federal corporate rate on business profits. If you plan to reinvest most earnings back into the business rather than pay yourself, the 21% rate is lower than the top individual rates of up to 37%, which frees up cash for growth.
A C corporation can also deduct certain fringe benefits it provides to employees and owner-employees, including health insurance premiums and educational assistance.
The tradeoff is double taxation on any money you actually take out. When the corporation distributes profits as dividends, shareholders pay tax at rates up to 20%, plus a potential 3.8% net investment income tax. Combined with the 21% corporate rate, the total effective tax on distributed earnings can approach 40%. C corporation status is a poor fit if you need to pull most of the profits out each year.
Deducting Business Expenses
Whatever classification you choose, your LLC can deduct ordinary and necessary business expenses from gross revenue.11Internal Revenue Service. Ordinary and Necessary Business Expenses “Ordinary” means common in your industry; “necessary” means helpful and appropriate. Deductible categories include supplies, software subscriptions, marketing, professional development, business insurance, and fees paid to accountants or attorneys. Vehicle costs for business travel can be deducted using actual expenses or the IRS standard mileage rate. Every category requires a clear business purpose backed by records.
Home Office
If you use part of your home regularly and exclusively for business, you can claim a home office deduction. The simplified method allows $5 per square foot of dedicated space up to 300 square feet, for a maximum of $1,500.12Internal Revenue Service. Simplified Option for Home Office Deduction The regular method lets you deduct actual expenses like a share of rent, utilities, and insurance based on the percentage of your home used for business. It requires more record-keeping but often produces a larger deduction.
If your LLC has elected S corporation treatment, the mechanics change. The corporation typically reimburses you for home office expenses under an accountable plan and deducts the reimbursements. You don’t claim the deduction directly on your personal return in that case.
Using Business Losses Against Other Income
Losses that flow through from your LLC can offset wages, interest, and other income on your personal return, but only if you materially participate in the business. The IRS considers you a material participant if you work in the business for more than 500 hours during the year, among other tests.13Internal Revenue Service. Publication 925 (2025), Passive Activity and At-Risk Rules
If you don’t materially participate, the activity is passive, and losses can only offset income from other passive activities. They can’t reduce your salary, freelance earnings, or portfolio income. Suspended losses carry forward and become deductible when you generate passive income or dispose of your entire interest.13Internal Revenue Service. Publication 925 (2025), Passive Activity and At-Risk Rules This distinction matters most for members who are investors rather than operators. For owner-operators running the LLC full-time, the test is almost always met.
State Costs Can Reduce the Federal Savings
Federal benefits don’t stand alone. Most states require LLCs to file an annual or biennial report and pay a fee that ranges from $0 to several hundred dollars. A handful impose franchise or minimum taxes regardless of whether the business earned a profit. Some states also don’t recognize the S corporation election at the state level, so you could owe state tax on income that receives favorable federal treatment. Check your state’s rules before choosing a classification.