Let’s talk about the bill nobody wants but everyone who works for themselves has to pay. It’s called self-employment tax, and you file it on Schedule SE. This isn’t your income tax. This is your Social Security and Medicare bill.
Here’s the hard truth: when you’re an employee, your company splits this cost with you. They pay half, you pay half. When you’re self-employed, you’re the company. So you pay both halves. That’s what Schedule SE is for. If your side hustle, freelance work, or small business made a net profit of $400 or more this year, you have to file this form. No way around it.
Break out the calculator
The total tax rate is 15.3%. It’s made up of two parts:
- 12.4% for Social Security. This only applies to the first chunk of your earnings. For 2024 that cap is $168,600.
- 2.9% for Medicare. This applies to all your profit, with no upper limit.
You calculate this tax on your net earnings—that’s your business income minus all your business expenses. It’s the bottom-line profit you report on Schedule C.
Here’s a real example: Let’s say your landscaping business pulled in $75,000. After gas, equipment, insurance, and advertising, your expenses were $25,000. Your net profit is $50,000. You’ll pay 15.3% self-employment tax on that $50,000. That’s $7,650, right off the top.
Here’s the one break you get. Because you’re paying the “employer” half, the IRS lets you deduct one-half of your calculated SE tax on Form 1040. This reduces your taxable income for regular income tax purposes.
Using the example above:
- Your SE tax is calculated on $60,000.
- Let’s say your SE tax comes out to ~$8,500.
- You can deduct $4,250 (half of the SE tax) on your 1040.
- You pay the full $8,500 in SE tax.
So you’re not paying tax on the “employer” half, but you are still writing the check for it.
You’ll see two sections on the form. Most people use the Short Schedule (Section A). You can only use it if:
- Your only source of self-employment income is from a business where you are the sole owner (not as a partner).
- Your net earnings are less than the Social Security wage base ($168,600 for 2024).
- You didn’t receive wages or tips as an employee from another job.
If you have a more complex situation, like you’re a partner in a business, you also have a W-2 job, or your earnings exceed the wage base, you must use the Long Schedule (Section B). This is where you figure the tax on multiple income sources and apply the wage base limit correctly.
Who Has To Use the Long Form
Most sole proprietors use the short form on the front (Section A). It’s simple math.
But you’re forced to use the long, more complicated schedule (Section B) if:
- You also have a regular W-2 job.
- You’re a partner in a business (you get a K-1).
- You made more than the Social Security wage base ($168,600).
- You had church employee income.
The long form makes sure you don’t overpay Social Security tax when you have income from multiple jobs. It’s a pain, but it can save you money.
What Counts and What Doesn’t
- DOES Count: Profits from your sole proprietorship (Schedule C), your share of partnership income (K-1), farm income (Schedule F), freelance and gig work.
- DOES NOT Count: Rental income (usually), investment income (dividends, interest), wages from a job (that’s on your W-2).
FAQs
I have a day job and drive for Uber on weekends. Am I paying Social Security tax twice?
Yes, but with a ceiling. The 12.4% Social Security tax only applies up to the yearly limit. Let’s say your W-2 job pays $100,000. You’ve already paid Social Security tax on that. If your Uber profit is $20,000, you’ll pay the 2.9% Medicare tax on all of it, but only pay the 12.4% Social Security tax on the amount that, combined with your wages, hasn’t yet hit the cap. You must use the Long Schedule SE to figure this out correctly. If you don’t, you’ll overpay.
My business lost money this year. Do I file Schedule SE?
No. The tax is only on net profit. If your Schedule C shows a loss (or zero profit), you don’t file Schedule SE. That loss can actually reduce your other income on your 1040.
I’m a partner in my friend’s business. The LLC sends me a K-1. What number do I use?
Don’t use the revenue. Look at your Schedule K-1 (Form 1065), Box 14, Code A. That’s your share of the business’s net earnings for self-employment tax. You plug that number into your personal Schedule SE.
Can I just write off more stuff to get my profit under $400 and avoid this?
If the expenses are real, yes. The magic number is $400 in net earnings. If you have $5,000 in sales but $4,700 in legitimate, documented business expenses, your net is $300. No Schedule SE is due. But you can’t just make up expenses. The IRS isn’t stupid.
My friend told me to form an S-Corp to avoid this tax. Is that true?
It’s a partial strategy, not an avoidance scheme. If you form an S-Corporation, you must pay yourself a “reasonable salary” as a W-2 employee of your own company. That salary is subject to the same 15.3% payroll tax (split between the corp and you). Any profit left over can be distributed as dividends, which are not subject to self-employment tax. This can save you money, but it adds massive complexity, legal fees, and strict rules. If you pay yourself an unreasonably low salary to avoid the tax, the IRS will reclassify your dividends as wages and hammer you with back taxes and penalties. Don’t do this without a CPA.
What happens if I just ignore this and don’t pay it?
They will find you, and it will be expensive. The IRS computers match your filed Schedule C profit to your tax return. If you reported a $50,000 profit but didn’t file Schedule SE, you’ll get a notice. You’ll owe the tax plus failure-to-pay penalties (0.5% per month) and interest that compounds daily. They can and will seize your bank accounts. Also, by not paying, you’re not earning credits toward your Social Security retirement benefits.
When do I pay this? April 15?
No, you need to pay as you earn. Since no tax is withheld from your business income, you’re generally required to make estimated tax payments four times a year (April, June, September, and the following January). Use Form 1040-ES. Your quarterly payment should cover both your expected income tax and your self-employment tax. If you wait until April, you’ll owe a big chunk of money plus an underpayment penalty.Schedule SE is the cost of being independent. You can’t dodge it. The smart move is to open a separate business bank account and immediately transfer 25-30% of every single payment you receive into a savings account labeled “TAXES.” That covers your SE tax and your income tax. If you spend your profit as it comes in, you’re just spending the IRS’s money, and they will come to collect. Get a good tax pro in your first year to set this system up. It’s the only way to sleep at night.