Self-Employment Tax Calculator

Calculate your self-employment taxes, quarterly payments, and deductions for 2026

Annual Gross Income ($)

Your total revenue from self-employment (1099-NEC, business income, etc.)

Business Expenses ($)

Deductible business expenses (home office, supplies, software, travel, etc.)

Filing Status

Other Income ($) - Optional

W-2 wages, investment income, spouse's income if filing jointly

Standard/Itemized Deductions ($)

2026 standard deduction: Single $14,600 | MFJ $29,200 | HOH $21,900

Your 2026 Tax Estimate

Net Self-Employment Income

Self-Employment Tax

Income Tax

Total Tax Owed

Tax Breakdown

Gross Self-Employment Income $0

Business Expenses (Deductible) -$0

Net Self-Employment Income (Schedule C) $0

Self-Employment Tax (15.3%) $0

½ SE Tax Deduction -$0

Adjusted Gross Income (AGI) $0

Standard/Itemized Deductions -$0

Taxable Income $0

Federal Income Tax $0

Total Tax Owed for 2026 $0

Quarterly Estimated Tax Payments (2026)

Q1 2026

Due Apr 15

Q2 2026

Due Jun 16

Q3 2026

Due Sep 15

Q4 2026

Due Jan 15, 2027

💡 Tax-Saving Tip: You can deduct 50% of your self-employment tax from your gross income, which reduces your overall tax burden. This deduction is already included in the calculation above.

Understanding Self-Employment Tax

If you're a freelancer, independent contractor, gig worker, or small business owner, you're responsible for paying self-employment tax in addition to regular income tax. This comprehensive guide explains how self-employment tax works and how to minimize your tax burden legally.

What is Self-Employment Tax?

Self-employment tax is the equivalent of Social Security and Medicare taxes (FICA taxes) that W-2 employees pay. When you work for an employer, they pay half (7.65%) and you pay half (7.65%) for a total of 15.3%. When you're self-employed, you pay both halves, which equals 15.3% of your net self-employment income.

The 15.3% breaks down as follows:

12.4% for Social Security – Only applies to the first $168,600 of net earnings (2024 limit, typically increases each year)
2.9% for Medicare – Applies to all net self-employment income with no cap
0.9% Additional Medicare Tax – Applies to high earners (over $200,000 single, $250,000 married filing jointly)

Who Must Pay Self-Employment Tax?

You must pay self-employment tax if:

You had net earnings from self-employment of $400 or more
You're a freelancer, consultant, independent contractor, or gig worker (Uber, DoorDash, Upwork, etc.)
You own and operate a sole proprietorship, partnership, or LLC taxed as a pass-through entity
You receive a 1099-NEC (nonemployee compensation) or 1099-K (payment card transactions)

Note: If you have both W-2 and self-employment income, you still pay self-employment tax on your self-employment earnings, but Social Security tax is capped at the combined total from both sources.

How to Calculate Self-Employment Tax

Follow these steps to calculate your self-employment tax:

Step 1: Calculate Net Self-Employment Income
Gross income (all revenue) - Business expenses = Net profit (Schedule C line 31)

Step 2: Calculate Self-Employment Tax Base
Net profit × 92.35% = Self-employment tax base
Why 92.35%? The IRS allows you to deduct the employer-equivalent portion (7.65%) before calculating the tax.

Step 3: Apply the 15.3% Rate
Self-employment tax base × 15.3% = Self-employment tax owed

Step 4: Deduct Half of SE Tax
You can deduct 50% of your self-employment tax from your gross income when calculating your adjusted gross income (AGI). This reduces your income tax burden.

Example: If you earn $80,000 in freelance income with $15,000 in business expenses:

Net profit: $80,000 - $15,000 = $65,000
SE tax base: $65,000 × 92.35% = $60,028
SE tax: $60,028 × 15.3% = $9,184
Deductible portion: $9,184 ÷ 2 = $4,592
Adjusted gross income: $65,000 - $4,592 = $60,408

Quarterly Estimated Tax Payments

Unlike W-2 employees who have taxes withheld from each paycheck, self-employed individuals must pay taxes quarterly using Form 1040-ES. If you expect to owe $1,000 or more in taxes, you must make quarterly payments to avoid penalties.

2026 Quarterly Tax Due Dates:

Q1: January 1 - March 31 → Due April 15, 2026
Q2: April 1 - May 31 → Due June 16, 2026
Q3: June 1 - August 31 → Due September 15, 2026
Q4: September 1 - December 31 → Due January 15, 2027

How to pay: You can pay online through IRS Direct Pay, EFTPS (Electronic Federal Tax Payment System), or mail a check with Form 1040-ES.

Penalty for not paying: If you underpay by more than 10%, you may owe an underpayment penalty (typically 3-8% annual interest). The IRS generally requires you to pay at least 90% of the current year's tax or 100% of last year's tax (110% if AGI exceeds $150,000) to avoid penalties.

Top Self-Employment Tax Deductions

Maximizing deductions reduces your net profit, which lowers both self-employment tax and income tax. Here are the top deductions for self-employed individuals:

1. Home Office Deduction
If you use part of your home exclusively for business, you can deduct either:

Simplified method: $5 per square foot (max 300 sq ft = $1,500)
Regular method: Actual expenses (mortgage interest, utilities, insurance, repairs) × percentage of home used for business

2. Business Mileage
67¢ per mile driven for business purposes (2024 rate). Keep detailed mileage logs with dates, destinations, and business purpose.

3. Health Insurance Premiums
Self-employed individuals can deduct 100% of health, dental, and long-term care insurance premiums for themselves, spouse, and dependents. This is an "above-the-line" deduction (reduces AGI).

4. Retirement Contributions
Contributions to SEP-IRAs, Solo 401(k)s, or SIMPLE IRAs are deductible and reduce your taxable income. SEP-IRAs allow up to 25% of net self-employment income (max $69,000 in 2024).

5. Business Equipment & Supplies
Computers, software, office furniture, tools, and equipment. You can deduct the full cost in the year of purchase (Section 179) up to $1,160,000 (2024 limit) or depreciate over time.

6. Professional Services
Legal fees, accounting fees, bookkeeping, tax preparation, and business consulting.

7. Marketing & Advertising
Website costs, social media ads, business cards, brochures, SEO services, and online advertising.

8. Business Travel & Meals
50% of business meals (increased to 100% for 2021-2022 under COVID relief, now back to 50%). Airfare, hotels, and transportation for business trips are 100% deductible.

9. Education & Training
Courses, conferences, books, and training related to your business (must maintain or improve skills, not qualify you for a new field).

10. Internet & Phone
The business-use percentage of your internet, cell phone, and landline costs.

Self-Employment Tax Strategies to Reduce Your Tax Bill

1. Form an S Corporation
Once your net profit exceeds ~$60,000-$80,000, consider electing S Corp status. You pay yourself a "reasonable salary" (subject to payroll taxes) and take the rest as distributions (not subject to self-employment tax). This can save $5,000-$15,000+ annually but requires payroll processing and additional tax filings.

2. Maximize Retirement Contributions
Contributing to a SEP-IRA or Solo 401(k) reduces your taxable income dollar-for-dollar. A Solo 401(k) allows up to $69,000 in contributions (2024) if you're under 50, or $76,500 if 50+.

3. Hire Your Kids
If you have a sole proprietorship, wages paid to your children under 18 are not subject to FICA taxes (but are income tax deductible for you). Kids can earn up to the standard deduction ($14,600 in 2024) tax-free.

4. Track EVERY Business Expense
Use accounting software (QuickBooks, FreshBooks, Wave) or apps (Expensify, Shoeboxed) to capture every deductible expense. Missing deductions means paying more tax than necessary.

5. Prepay Expenses in High-Income Years
If you expect lower income next year, prepay deductible expenses (software subscriptions, insurance, supplies) in December to accelerate deductions.

6. Consider an Accountable Plan
If your business is structured as a partnership or S Corp, set up an accountable plan to reimburse yourself for business expenses tax-free (no payroll taxes, not counted as income).

Common Self-Employment Tax Mistakes to Avoid

Not making quarterly payments – Waiting until April 15 to pay all at once results in underpayment penalties
Mixing personal and business expenses – Maintain separate bank accounts and credit cards for business use
Forgetting the ½ SE tax deduction – This reduces your AGI and saves you on income tax
Not keeping receipts and records – The IRS can disallow deductions without proper documentation
Claiming 100% business use for dual-purpose items – Be honest about personal vs. business use percentages
Missing the home office deduction – If you qualify, this is one of the most valuable deductions
Not contributing to retirement accounts – Missing out on tax-deferred growth and immediate tax savings

Frequently Asked Questions

How much should I set aside for self-employment taxes?

A good rule of thumb is to set aside 25-30% of your gross income for federal taxes (15.3% self-employment tax + 10-22% income tax for most freelancers). If you're in a state with income tax, add another 3-10% depending on your state. For example, on $80,000 gross income, set aside $20,000-$24,000 for taxes. Use a high-yield savings account dedicated to tax savings so the money is available when quarterly payments are due.

Can I deduct health insurance premiums if I'm self-employed?

Yes! Self-employed individuals can deduct 100% of health insurance premiums for themselves, their spouse, and dependents as an adjustment to income (above-the-line deduction). This includes medical, dental, and qualified long-term care insurance. However, you cannot deduct premiums for any month you were eligible for employer-sponsored health insurance through your spouse's job. This deduction reduces your income tax but not your self-employment tax.

What happens if I don't make quarterly estimated tax payments?

If you owe $1,000 or more in taxes and don't make quarterly payments, the IRS will charge an underpayment penalty. The penalty rate varies (typically 3-8% annually) and is calculated based on how much you underpaid and for how long. To avoid penalties, you must pay either 90% of the current year's tax or 100% of last year's tax (110% if your AGI was over $150,000). Even if you owe a penalty, it's usually small compared to the interest and penalties for not paying at all.

Do I pay self-employment tax on LLC income?

It depends on how your LLC is taxed. By default, single-member LLCs are treated as sole proprietorships (you pay self-employment tax on net profit). Multi-member LLCs are partnerships (partners pay SE tax on their distributive share). However, if your LLC elects S Corporation status, you only pay self-employment tax (in the form of payroll taxes) on your W-2 salary, not on distributions. C Corporation status eliminates self-employment tax entirely but subjects income to double taxation (corporate + personal). Consult a CPA to determine the best structure for your situation.

Can I deduct business meals and entertainment?

Business meals are 50% deductible if they are ordinary and necessary for your business and not lavish or extravagant. You must have a business discussion during or immediately before/after the meal, and you or an employee must be present. Entertainment expenses (concerts, sporting events, golf outings) are no longer deductible as of 2018 under the Tax Cuts and Jobs Act. Keep detailed records including date, amount, business purpose, and names of people present.

Should I form an S Corp to save on self-employment tax?

S Corp election can save significant money once your net profit exceeds $60,000-$80,000 annually. As an S Corp, you pay yourself a "reasonable salary" (subject to payroll taxes) and take remaining profits as distributions (not subject to self-employment tax). Example: On $100,000 profit, pay yourself a $60,000 salary and take $40,000 in distributions, saving ~$6,000 in SE tax. However, S Corps require payroll processing, quarterly payroll tax filings, a separate tax return (Form 1120-S), and cost $500-$2,000 annually for accounting. Consult a CPA to analyze whether the savings justify the additional cost and complexity.

What is the QBI deduction and do self-employed people qualify?

The Qualified Business Income (QBI) deduction, also called the Section 199A deduction, allows self-employed individuals and small business owners to deduct up to 20% of their qualified business income from their taxable income (not from gross income). This is in addition to the standard or itemized deductions. The deduction phases out for "specified service trades or businesses" (SSTB) like lawyers, accountants, and consultants if your income exceeds $191,950 single or $383,900 married filing jointly (2024 thresholds). For non-SSTB businesses, the deduction is available regardless of income level. This deduction can save thousands in income tax but does not reduce self-employment tax.

How do I report self-employment income and pay taxes?

Report self-employment income on Schedule C (Profit or Loss from Business) attached to your Form 1040. Schedule C shows your gross receipts, business expenses, and net profit. Transfer your net profit to Schedule SE to calculate self-employment tax. Half of your SE tax is deducted on Schedule 1 (line 15). Pay estimated taxes quarterly using Form 1040-ES via IRS Direct Pay, EFTPS, or by mailing a check. Keep detailed records of all income and expenses, and save receipts for at least 3 years (7 years is better). Consider hiring a CPA or using tax software like TurboTax Self-Employed or H&R Block Self-Employed for the first few years until you understand the process.