Self-Employment Tax in Maine (2026)
Self-employment tax is a federal 15.3% tax (12.4% Social Security up to the wage base plus 2.9% Medicare) paid to the IRS on Schedule SE. Maine has no separate self-employment tax, but your self-employment income is still subject to Maine income tax at rates from 5.8% to 7.15%.
Quick Answer
- SE tax rate
- 15.3% (12.4% Social Security + 2.9% Medicare)
- Paid to
- The IRS on Schedule SE
- Maine SE tax
- None - Maine has no separate self-employment tax
- Maine income tax
- 5.8% to 7.15% on net business income
- Base
- 92.35% of net business profit
- Estimated
- Quarterly to the IRS and Maine Revenue Services
What Self-Employment Tax Is in Maine
Self-employment (SE) tax is the Social Security and Medicare tax that self-employed people pay in place of the payroll taxes an employer would withhold. The combined rate is 15.3% - 12.4% for Social Security on net earnings up to the annual wage base, plus 2.9% for Medicare with no cap. It is a federal tax collected by the IRS; Maine does not levy its own separate self-employment tax.
You owe SE tax if you are a sole proprietor, an independent contractor, a partner in a partnership, or a member of a multi-member LLC or single-member LLC taxed as a disregarded entity. It is separate from income tax: you pay SE tax to fund Social Security and Medicare, and income tax - both federal and Maine - on top of it. See our SE tax calculator to estimate the amount.
How the 15.3% Rate Works
You do not pay SE tax on gross revenue. You pay on net earnings from self-employment, which is your business profit multiplied by 92.35%. The 12.4% Social Security portion applies only up to the annual Social Security wage base (which the SSA adjusts each year); earnings above it owe only the 2.9% Medicare portion. High earners also pay an Additional Medicare Tax of 0.9% above $200,000 (single) or $250,000 (married filing jointly).
You calculate SE tax on Schedule SE and report it on your Form 1040. A valuable offset: you deduct one-half of your SE tax as an above-the-line income adjustment, which lowers your federal and Maine income tax (though not the SE tax itself). Our business tax guide shows how these pieces fit together.
How Maine Income Tax Applies to Self-Employment
Although Maine has no separate self-employment tax, your self-employment profit is still subject to Maine income tax. Maine taxes individual income, including self-employment profit, at graduated rates from 5.8% to 7.15% for 2026. You report the same net business income on your Maine return that flows from your federal Schedule C or K-1, then apply Maine's rates and any credits or deductions.
The Maine Revenue Services administers Maine income tax. Because no employer withholds from self-employment income, you typically owe Maine estimated payments in addition to federal ones. Keep good records of business income and expenses, since your deductible expenses reduce both the SE tax base and your Maine taxable income. Our Maine LLC tax filing page covers entity-level details.
Paying Estimated SE and Maine Taxes
Self-employed taxpayers generally must make quarterly estimated payments because nothing is withheld. Federal estimates (covering both income tax and SE tax) go to the IRS on Form 1040-ES and are due April 15, June 15, September 15, and January 15. Maine requires its own estimated income-tax payments on a similar schedule through the Maine Revenue Services.
A common rule of thumb is to set aside 25-35% of net profit for combined federal income tax, SE tax, and state income tax, though your exact rate depends on your bracket. Underpaying triggers IRS and Maine penalties, so pay quarterly. If your business grows, revisit whether an S-corp election could reduce the 15.3% burden.
Can an S-Corp Reduce SE Tax in Maine?
Yes - this is the main tax reason profitable owners consider it. If your LLC elects S-corporation status on Form 2553, you become an employee of your own company. You must pay yourself a reasonable salary subject to payroll (Social Security and Medicare) tax, but the remaining profit passes through as a distribution not subject to self-employment or payroll tax.
The savings can be significant once profit comfortably exceeds a reasonable salary, but the election adds payroll processing, a separate Form 1120-S return, and Maine payroll registration. The IRS scrutinizes unreasonably low salaries. Run the numbers first; below the break-even point the added costs outweigh the SE-tax savings. See our business tax resources for the analysis.
Deductions That Lower Self-Employment Tax
Because SE tax is calculated on net profit, every legitimate business deduction reduces it. Ordinary and necessary expenses - supplies, software, mileage, a home office, professional fees, and health insurance premiums - lower the net earnings figure on Schedule SE and therefore both your SE tax and income tax. Track them contemporaneously with clean records and a separate business account.
Note the difference between deductions that reduce SE tax (business expenses on Schedule C) and those that reduce only income tax (like the one-half SE tax deduction and a self-employed retirement contribution). Retirement plans such as a SEP-IRA or solo 401(k) cut income tax but not the SE tax base. For entity-level planning, see our Maine LLC guide.
Maine Self-Employment Tax at a Glance
The table summarizes the federal SE tax components and the Maine layer. Confirm the current wage base with the IRS and Social Security Administration each year.
| Component | Rate | Applies to |
|---|---|---|
| Social Security (SE tax) | 12.4% | Net SE earnings up to the annual wage base |
| Medicare (SE tax) | 2.9% | All net SE earnings (no cap) |
| Additional Medicare Tax | 0.9% | Earnings above $200,000 / $250,000 |
| Maine income tax | 5.8% - 7.15% | Net business income on your Maine return |
SE tax totals 15.3% up to the wage base. Maine adds income tax, not a separate SE tax. Deduct one-half of your SE tax on your federal return.
Verify Current Details and Avoid Common Pitfalls in Maine
State fees, tax rates, forms, and deadlines change from year to year, so before you file or pay anything, confirm the current figures directly on the official Maine agency websites cited below. The amounts on this page are effective for 2026 and are set by the government, not by any filing service. Public records and most state forms are free or low-cost, and a federal EIN is always free from the IRS - be cautious of third-party websites that charge inflated fees to file routine state paperwork or to obtain a number the government issues at no cost. Reading the primary source yourself is the surest way to avoid outdated or misleading second-hand information, which is exactly why every figure here links to a Maine agency, statute, or the IRS.
A second common pitfall is blurring the line between you and your business. If you operate through an LLC or corporation, the liability protection depends on treating the entity as genuinely separate: keep a dedicated business bank account, sign contracts in the company name, keep clean records, and adopt an operating agreement even if Maine does not require you to file one. Commingling personal and business money is the fastest way to weaken the shield if the company is ever sued. Owners should also plan for taxes early - set aside money for income and self-employment tax, and review whether an S-corp election fits once profits grow. See our business tax overview for how the pieces connect.
Finally, do not confuse a state business registration with trademark ownership. Clearing a name in the Maine business entity search means no other registered entity has that exact name - it does not grant nationwide rights or clear a federal trademark, so search the USPTO database before you invest in branding. Likewise, if you use a name different from your legal entity name, file a Maine DBA. When your business changes or winds down, follow the proper Maine dissolution steps rather than simply abandoning the entity, which leaves fees and filings running. For definitions of the terms used throughout this guide, see the glossary, and use the related Maine guides below to complete each step in the right order.
Frequently Asked Questions
Does Maine have a self-employment tax?
No. Self-employment tax is a federal 15.3% Social Security and Medicare tax paid to the IRS. Maine does not impose a separate self-employment tax, but your self-employment income is still subject to Maine income tax.
How much is self-employment tax?
The self-employment tax rate is 15.3% of net earnings: 12.4% for Social Security up to the annual wage base plus 2.9% for Medicare with no cap. You pay it on 92.35% of your business profit, calculated on Schedule SE.
Do I pay Maine income tax on self-employment income?
Yes. Maine taxes individual income, including self-employment profit, at graduated rates from 5.8% to 7.15% for 2026. You report the same net business profit on your Maine return that flows from your federal Schedule C or K-1 and apply Maine rates.
How do I lower my self-employment tax?
Claim every legitimate business deduction to reduce net profit, and consider an S-corp election once profit exceeds a reasonable salary. You also deduct one-half of your SE tax on your federal return, which lowers income tax.
When are self-employment taxes due?
You generally pay quarterly estimated taxes to the IRS on April 15, June 15, September 15, and January 15, plus Maine estimated income tax on a similar schedule. You reconcile on your annual returns.
Related
- Self-employment tax in Oregon (sibling)
- Self-employment tax calculator
- How to form an LLC (cluster hub)
- How to form an LLC in Maine
- How to get an EIN
- Registered agent requirements
- Business tax overview
- S-corp vs LLC
- How to dissolve an LLC
More Maine business guides
Business License In Dissolve An Llc In Annual Report Articles Of Organization Business Entity Search Certificate Of Formation Dba Filing Llc Tax Filing Operating Agreement Registered Agent
Sources
- IRS - Self-Employment Tax (Social Security and Medicare Taxes).
- IRS - About Schedule SE (Form 1040).
- IRS - Estimated Taxes.
- Social Security Administration - Contribution and Benefit Base (Social Security wage base).
- IRS - About Form 2553, Election by a Small Business Corporation.
- IRS - Single Member Limited Liability Companies.
- Maine Revenue Services - Income/estate tax.
- Maine Revenue Services - Income tax guidance and rates.
- Maine.gov - Maine Revenue Services.
- Maine Legislature - Maine Revised Statutes Title 36 (Taxation).
- Cornell LII - 26 U.S. Code Sec. 1401 - Rate of self-employment tax.
- Cornell LII - 26 U.S. Code Sec. 1402 - Definitions (self-employment income).
- Cornell LII - Limited liability company (LLC).
- Justia - Maine Revised Statutes - taxation.
LegalGlass provides general information for educational purposes and is not a law firm or a substitute for advice from a licensed attorney or tax professional. Laws, fees, and thresholds change; verify current requirements with the IRS and Maine Revenue Services before acting.