Self-Employment Tax: What It Is and How to Reduce It

Self-Employment Tax: What It Is and How to Reduce It

Self-employment tax is one of the biggest surprises for new business owners. On top of income tax, you owe an additional 15.3% on your net self-employment earnings. That is the combined employee and employer share of Social Security and Medicare taxes that W-2 employees split with their employer.

How Self-Employment Tax Works

When you work for someone else, your employer pays half of your Social Security and Medicare taxes (7.65%), and the other half (7.65%) is withheld from your paycheck. When you are self-employed, you pay both halves -- the full 15.3%.

The breakdown:

• Social Security: 12.4% on net earnings up to the annual wage base ($176,100 for 2025; this threshold adjusts annually)
• Medicare: 2.9% on all net earnings with no cap
• Additional Medicare Tax: 0.9% on net earnings exceeding $200,000 ($250,000 for married filing jointly)

Self-Employment Tax Rate Breakdown for 2025-2026

Component	Rate	Applied To	Cap
Social Security (employee portion)	6.2%	Net SE earnings x 92.35%	$176,100 (2025)
Social Security (employer portion)	6.2%	Net SE earnings x 92.35%	$176,100 (2025)
Medicare (employee portion)	1.45%	Net SE earnings x 92.35%	No cap
Medicare (employer portion)	1.45%	Net SE earnings x 92.35%	No cap
Additional Medicare Tax	0.9%	Net SE earnings over $200,000/$250,000	No cap
Total SE tax rate	15.3%	Below wage base
Rate above wage base	3.8%	Above wage base, below $200K
Rate above $200K (single)	3.8% + 0.9%	Above $200,000

Important nuance: The 92.35% multiplier means your effective SE tax rate is actually 14.13% (15.3% x 92.35%), not the full 15.3%. On $100,000 in net earnings, your SE tax is $14,130, not $15,300.

Who Pays Self-Employment Tax

You owe self-employment tax if your net self-employment earnings are $400 or more per year. This includes:

• Sole proprietors
• General partners in a partnership
• Members of an LLC taxed as a sole proprietorship or partnership
• Independent contractors and freelancers
• Gig workers
• Ministers and members of religious orders (unless exempt)
• Farmers and fishermen

S corporation shareholders and C corporation shareholders do not pay self-employment tax on their distributions or dividends. However, S corp shareholders who work in the business must pay themselves a reasonable salary, which is subject to employment taxes.

Income That Is NOT Subject to Self-Employment Tax

• S corporation distributions (profit above reasonable salary)
• C corporation dividends
• Rental income from real estate (in most cases)
• Limited partner income (their share of partnership income)
• Interest and dividend income from investments
• Capital gains from selling business assets
• Wages from an employer (covered by FICA instead)

Calculating Self-Employment Tax: Detailed Examples

Example 1: Freelancer Earning $75,000

1. Net self-employment income: $75,000
2. Multiply by 92.35%: $75,000 x 0.9235 = $69,263
3. Social Security tax: $69,263 x 12.4% = $8,589
4. Medicare tax: $69,263 x 2.9% = $2,009
5. Total SE tax: $10,598
6. Deductible half: $10,598 / 2 = $5,299

This freelancer owes $10,598 in self-employment tax on top of income tax. They can deduct $5,299 from their AGI, saving roughly $1,272 in income tax (at the 24% bracket).

Example 2: Consultant Earning $200,000

1. Net self-employment income: $200,000
2. Multiply by 92.35%: $200,000 x 0.9235 = $184,700
3. Social Security tax: $176,100 x 12.4% = $21,836 (capped at wage base)
4. Medicare tax: $184,700 x 2.9% = $5,356
5. Additional Medicare Tax: $0 (net SE income does not exceed $200,000 threshold here since the Additional Medicare Tax applies to the full net SE earnings, not the 92.35% amount -- check IRS instructions for your specific situation)
6. Total SE tax: $27,192
7. Deductible half: $27,192 / 2 = $13,596

Example 3: High-Earning Business Owner at $350,000

1. Net self-employment income: $350,000
2. Multiply by 92.35%: $350,000 x 0.9235 = $323,225
3. Social Security tax: $176,100 x 12.4% = $21,836 (capped at wage base)
4. Medicare tax: $323,225 x 2.9% = $9,374
5. Additional Medicare Tax: ($350,000 - $200,000) x 0.9% = $1,350
6. Total SE tax: $32,560
7. Deductible half (of regular SE tax only): ($21,836 + $9,374) / 2 = $15,605

At $350,000, this owner is paying $32,560 in self-employment tax -- roughly the cost of a mid-level employee's salary. This is why high earners aggressively pursue SE tax reduction strategies.

Report self-employment tax on Schedule SE, which you file with your Form 1040.

The Deduction You Should Not Miss

You can deduct the employer-equivalent portion of your self-employment tax (half of the total SE tax, excluding the Additional Medicare Tax) as an adjustment to income on your Form 1040. This reduces your adjusted gross income, which can lower your income tax. It does not reduce your self-employment tax itself, but it is a meaningful deduction that some business owners overlook.

Concrete impact: If your SE tax is $14,130, you deduct $7,065 from your AGI. At a 24% marginal income tax rate, that saves you $1,696 in income tax. This deduction is available even if you take the standard deduction -- it is an "above the line" adjustment.

Strategies to Reduce Self-Employment Tax

1. Elect S Corporation Status

The most impactful strategy for established businesses. When your business is taxed as an S corporation, you pay yourself a reasonable salary (subject to employment taxes) and take remaining profits as distributions (not subject to self-employment tax).

Example: Your business earns $150,000 in profit. As a sole proprietor, you pay SE tax on the entire amount. As an S corp, you pay yourself a $70,000 salary (employment taxes apply) and take $80,000 as a distribution (no SE tax). The savings can exceed $10,000 per year.

The IRS requires the salary to be "reasonable" for your role and industry. Setting it too low invites scrutiny.

S-Corp Tax Savings Calculator: A Real Example

Let us run a detailed comparison for a business earning $150,000 in net profit:

Scenario A: Sole Proprietor

Item	Amount
Net business income	$150,000
SE tax base (x 92.35%)	$138,525
Social Security tax (12.4%)	$17,177
Medicare tax (2.9%)	$4,017
Total SE tax	$21,194
SE tax deduction (half)	$10,597
Taxable income (after std deduction)	$124,403
Federal income tax (approx.)	$20,744
Total federal tax burden	$41,938

Scenario B: S Corporation (Salary of $70,000)

Item	Amount
Net business income	$150,000
Reasonable salary	$70,000
Distribution (not subject to FICA)	$80,000
Employer FICA on salary (7.65%)	$5,355
Employee FICA on salary (7.65%)	$5,355
Total employment taxes	$10,710
Taxable income (salary + distribution, after std deduction)	$129,645
Federal income tax (approx.)	$21,960
Total federal tax burden	$32,670

The S-Corp Advantage

	Sole Prop	S Corp	Savings
Employment/SE taxes	$21,194	$10,710	$10,484
Income tax	$20,744	$21,960	-$1,216
Total tax	$41,938	$32,670	$9,268

Net savings: $9,268 per year. Subtract $2,000-$4,000 in additional payroll and accounting costs, and you still save $5,000-$7,000 annually.

At $200,000 in net profit with an $80,000 salary, the savings grow to roughly $14,000-$16,000 before accounting costs.

What Is a "Reasonable Salary" for an S Corp?

The IRS does not publish a specific number, but they consider:

• What similar businesses pay for similar roles in your geographic area
• Your experience and qualifications
• The time and effort you devote to the business
• Industry compensation surveys and Bureau of Labor Statistics data

Rules of thumb (these are guidelines, not IRS rules):

• At minimum, your salary should be comparable to what you would pay someone else to do your job
• Many CPAs recommend salary of at least 40-60% of net business income as a starting point
• For professional service businesses (consulting, law, medicine), reasonable salary tends to be higher because the income is primarily generated by your personal services
• Salaries that are less than $40,000 for a full-time owner-operator will almost certainly attract scrutiny

2. Maximize Business Deductions

Every legitimate business deduction reduces your net self-employment income, which directly reduces your SE tax. Common deductions include:

• Business equipment and supplies
• Vehicle expenses for business use
• Home office deduction
• Health insurance premiums (for self-employed individuals)
• Retirement plan contributions
• Professional development and education
• Business travel and meals (50% for meals)

Impact on SE tax: A $10,000 business deduction saves you approximately $1,413 in SE tax (10,000 x 14.13%) plus your marginal income tax rate on that $10,000. At the 24% bracket, the total tax savings from a $10,000 deduction is roughly $3,813.

3. Hire Your Spouse

If your spouse works in your business, you can hire them as an employee. Their wages are subject to employment taxes, but they reduce your self-employment income. This can also qualify them for Social Security benefits and allow the business to provide tax-free fringe benefits.

Tax-free fringe benefits strategy: If you hire your spouse, the business can provide them with health insurance that covers your entire family. The health insurance premiums become a 100% deductible business expense rather than a personal expense. This strategy works best for sole proprietorships -- it is more complex for LLCs and S corps.

Important: Your spouse must perform legitimate work for legitimate pay. Paying your spouse $50,000 for occasional bookkeeping will not withstand IRS scrutiny. The work must be real and the pay must be reasonable for the work performed.

4. Contribute to Retirement Plans

Contributions to a SEP IRA, SIMPLE IRA, or Solo 401(k) reduce your net self-employment income. A SEP IRA allows contributions up to 25% of net self-employment earnings (after the SE tax deduction), with a maximum of $70,000 for 2025. A Solo 401(k) allows even larger contributions through the combination of employee deferrals ($23,500 for 2025) and employer contributions (25% of net earnings).

Example: You earn $120,000 net. You contribute $23,500 as an employee deferral to your Solo 401(k), plus approximately $22,000 as an employer contribution (25% of net earnings after SE tax deduction). Total contribution: $45,500. At a 24% tax bracket, that saves roughly $10,920 in income tax -- plus the money grows tax-deferred.

5. Time Your Income and Expenses

If you are close to the Social Security wage base, timing income or expenses across tax years can affect how much SE tax you owe. Accelerating deductions into the current year reduces this year's SE tax liability.

Example: In December, you have $15,000 in invoices you could send now or wait until January. If your net SE earnings are already at $170,000, sending the invoices now pushes you above the Social Security wage base ($176,100 for 2025). On the income above the wage base, you only owe 2.9% Medicare rather than 15.3%. Delaying those invoices to January means you restart at zero and pay 15.3% on the first $176,100 again next year.

6. Employ Your Children (If Applicable)

If you are a sole proprietor or single-member LLC, you can hire your children under age 18. Their wages are exempt from FICA taxes and FUTA tax. Each child can earn up to the standard deduction amount ($15,000 in 2025) tax-free, and you deduct their wages as a business expense.

Example: You hire your 16-year-old to do filing, data entry, or social media for your business at $12/hour for 20 hours per week during summer (12 weeks). Total wages: $2,880. You save approximately $407 in SE tax plus $691 in income tax (at 24% bracket) -- a total of $1,098 in tax savings -- and your child owes zero tax on the income.

This strategy only works for sole proprietorships and husband-wife partnerships. It does not work for S corps or C corps.

Common Mistakes That Increase Your Self-Employment Tax

1. Not Tracking All Business Expenses

Every dollar of unclaimed deductions costs you 14.13% in SE tax plus your income tax rate. A business owner in the 24% bracket who misses $5,000 in deductions pays $1,907 in unnecessary taxes.

2. Waiting Too Long to Elect S Corp Status

The S corp election (Form 2553) is generally due by March 15 of the year you want it to take effect. Many business owners learn about the S corp strategy in October but cannot use it until the following year. If you are exploring this option, talk to a CPA before March.

3. Setting S Corp Salary Too Low

The IRS wins most cases where S corp owners pay themselves unreasonably low salaries. If you run a consulting firm billing $300,000 and pay yourself a $30,000 salary, expect an audit. The IRS will reclassify distributions as salary and charge you the back employment taxes plus penalties.

4. Ignoring the Additional Medicare Tax

High earners forget about the 0.9% Additional Medicare Tax on net SE earnings above $200,000 ($250,000 married filing jointly). This tax is not deductible and not split with an employer -- it is a pure additional cost.

5. Not Paying Quarterly Estimated Taxes

Self-employment tax is included in your quarterly estimated tax payments. Many first-year business owners calculate only their income tax for estimated payments and forget to include SE tax. The result: a massive balance due at filing time plus underpayment penalties.

When S Corp Election Makes Sense

The S corp strategy is not free. You will have additional costs for payroll processing, potentially higher accounting fees, and state filing requirements. Generally, the S corp election makes financial sense when your net business income consistently exceeds $50,000-$60,000 per year and the SE tax savings outweigh the administrative costs.

S Corp Break-Even Analysis

Net Business Income	Estimated SE Tax Savings	Estimated Admin Costs	Net Annual Benefit
$40,000	$2,000-$3,000	$2,000-$4,000	-$1,000 to $1,000
$60,000	$4,000-$5,000	$2,000-$4,000	$1,000-$3,000
$80,000	$5,500-$7,000	$2,000-$4,000	$3,000-$5,000
$100,000	$7,000-$9,000	$2,000-$4,000	$5,000-$7,000
$150,000	$9,000-$12,000	$2,500-$4,500	$6,500-$9,500
$200,000	$12,000-$16,000	$2,500-$4,500	$9,500-$13,500

Admin costs include: payroll service ($40-$100/month), additional CPA fees for S corp return ($500-$2,000), registered agent ($100-$300), and state filing fees.

States Where S Corp Election Has Extra Considerations

Some states do not recognize S corp status or impose additional taxes:

• California: 1.5% entity-level tax on net income (minimum $800 franchise tax)
• New York City: Does not recognize S corp status for city tax purposes
• New Hampshire: Taxes S corp income at the entity level (Business Profits Tax)
• Tennessee: S corps may owe franchise and excise tax
• Texas: Franchise (margin) tax applies regardless of entity type

Factor in state-level costs when evaluating the S corp election. In some states, the additional entity-level taxes reduce or eliminate the SE tax savings.

Talk to a CPA who specializes in small business tax before making this election. The analysis is specific to your situation.

Self-Employment Tax and Social Security Benefits

One upside of paying self-employment tax: it counts toward your Social Security earnings record. Your future Social Security benefits are based on your 35 highest-earning years.

How SE Tax Builds Your Social Security Record

• Self-employment tax pays into the Social Security and Medicare systems just like FICA withholding from a W-2 job
• You earn "credits" toward Social Security benefits: in 2025, one credit for every $1,810 in net SE earnings (up to 4 credits per year)
• You need 40 credits (10 years of work) to qualify for Social Security retirement benefits
• Higher earnings (up to the wage base) mean higher future benefits

Why this matters for S corp owners: When you elect S corp status and reduce your salary to save SE tax, you also reduce your Social Security earnings. A lower salary means lower future Social Security benefits. For younger business owners with decades until retirement, this tradeoff may be worth it. For business owners within 10 years of retirement, consider whether a higher salary (and higher SE tax) might increase your Social Security benefit enough to offset the tax savings.

Self-Employment Tax Deduction Impact on Other Tax Items

The deductible half of your SE tax reduces your AGI, which has cascading effects on other tax items:

• Lower AGI may reduce the Additional Medicare Tax threshold calculation
• Lower AGI can increase your eligibility for education credits, IRA deduction, and other income-phased benefits
• Lower AGI can preserve the full Qualified Business Income (QBI) deduction if you are near the phase-out threshold
• Lower AGI may reduce Net Investment Income Tax (3.8%) if you have investment income

Self-Employment Tax for Specific Business Types

Gig Workers and App-Based Drivers

Uber, Lyft, DoorDash, and Instacart drivers are independent contractors and owe SE tax on all net earnings. After deducting mileage (the largest deduction for most gig workers), the SE tax applies to the remaining profit. Many gig workers are surprised by their tax bill because the app companies do not withhold any taxes.

Real Estate Agents

Real estate agents are typically independent contractors (not employees of their brokerage). Commission income is subject to SE tax. However, expenses like MLS fees, marketing costs, vehicle mileage, and desk fees reduce net earnings before SE tax is calculated.

Amazon FBA and E-Commerce Sellers

Online sellers owe SE tax on net profit from their business. Cost of goods sold, Amazon fees, shipping costs, and other business expenses reduce the SE tax base. Some sellers are surprised that SE tax applies even when profit margins are thin.

Rental Income Exception

Rental income from real estate is generally NOT subject to self-employment tax. Passive rental income reported on Schedule E is exempt from SE tax. However, if you are a real estate dealer (buy and sell properties as a business) or you provide substantial services to tenants (like a bed-and-breakfast), the income may be subject to SE tax.

Partnership Guaranteed Payments

Guaranteed payments to partners (fixed payments regardless of partnership profit) are subject to SE tax. A partner's distributive share of ordinary partnership income is also generally subject to SE tax, unless the partner is a limited partner.