What Changes When No One Is Withholding Tax From Your Pay
By the end of this lesson, you'll understand:
Self-employment fundamentally changes your tax situation: no employer is withholding tax on your behalf, you owe an additional tax that employees split with their employer, and you're responsible for tracking your own deductible expenses. Understanding these differences early prevents both an underpayment surprise and missed deductions.
Self-employment tax is 15.3% of your net self-employment earnings, covering both the employee and employer portions of Social Security (12.4%) and Medicare (2.9%) that would otherwise be split between you and an employer. It's calculated on 92.35% of your net earnings, and the Social Security portion applies only up to the annual wage base ($176,100 for 2025, rising to $184,500 for 2026), earnings above that are subject only to the Medicare portion.
What to check: Self-employment tax is separate from and in addition to your regular income tax, don't confuse the two when estimating what you'll owe.
Schedule C reports your self-employment income and expenses to calculate your net profit or loss. Schedule SE uses that net profit figure to calculate your self-employment tax. Both attach to your regular Form 1040.
What to check: Half of your self-employment tax is deductible as an adjustment to income, which softens the impact somewhat, this is calculated automatically by most tax software but worth knowing about.
Ordinary and necessary business expenses, supplies, a home office meeting specific requirements, business mileage, professional software, and a portion of certain shared expenses, reduce your net self-employment income before tax is calculated. A Qualified Business Income (QBI) deduction may also apply, potentially allowing a deduction of up to 20% of qualified business income, subject to specific rules and income limits.
What to check: Keep detailed, contemporaneous records for every business expense, the specific requirements for things like a home office or vehicle mileage deduction are more detailed than a general estimate, and good records are your best protection if ever questioned.
Using a separate bank account and, ideally, a separate card for business income and expenses makes it dramatically easier to identify deductible expenses accurately and defend them if ever reviewed, compared to sorting through a single mixed account after the fact.
What to check: If you haven't already, open a dedicated account for business income and expenses, this connects directly back to the account-opening principles covered in Banking Course.
Sofia does freelance photography alongside a part-time job. Her freelance net profit for the year is $22,000 after deducting camera equipment, editing software, and business mileage, expenses she tracked using a dedicated business bank account and a simple mileage log app.
Her self-employment tax is roughly $3,108 (15.3% of 92.35% of $22,000), calculated on Schedule SE and reported alongside her regular income tax. Because she wasn't tracking this liability throughout the year, this becomes exactly the kind of situation the estimated payments lesson ahead is built to help her plan for next year.
If my freelance income is small, it's not really worth tracking expenses or reporting carefully.
All self-employment income is taxable and subject to self-employment tax regardless of size, and tracking expenses, even for modest income, directly reduces what you owe. Small amounts add up, in both income and missed deductions.
Self-employment tax is the same thing as income tax on my freelance earnings.
Self-employment tax (funding Social Security and Medicare) is separate from and in addition to regular income tax on that same income. Both apply to self-employment earnings, which is why the total tax impact often surprises new freelancers.
Yes, self-employment tax applies to net self-employment earnings regardless of whether you also have W-2 income elsewhere, though the Social Security wage base cap considers your combined wages and self-employment earnings together.
Often yes, through the self-employed health insurance deduction, subject to specific eligibility requirements, worth researching or confirming with a tax professional if this applies to you.
The IRS considers factors like your intent to make a profit, the regularity of the activity, and your recordkeeping practices. Hobby income is still taxable, but hobby-related expenses are treated very differently than business expenses, worth understanding if your activity is borderline.
If you have any self-employment or freelance income this year, open a dedicated bank account for it if you haven't already, and calculate a rough estimate of your self-employment tax using the 15.3% rate.
With self-employment tax basics covered, the next lesson, TXS116: Making Estimated Tax Payments, shows how to pay this liability throughout the year instead of all at once.
That's where Financial Confidence becomes your personal freelance tax coach.
Financial Confidence can help you estimate your self-employment tax, track deductible business expenses, separate business and personal transactions, and prepare for the estimated payments this income typically requires.
Explore More LessonsLet us know if this lesson was useful, it helps us know what to keep improving.
Thanks for letting us know!