Fill out Schedule SE (Self-Employment Tax) online
Schedule SE calculates the self-employment tax owed by individuals who work for themselves. Self-employment tax covers Social Security and Medicare taxes that would otherwise be withheld by an employer.
How to fill out Schedule SE (Self-Employment Tax)
Calculate net earnings
Enter your net profit from Schedule C (line 31) or net farm profit from Schedule F (line 34). If you have earnings from more than one business, combine them.
Apply the 92.35% factor
Multiply your net earnings by 0.9235 on line 4a. This adjustment accounts for the employer-equivalent portion of the tax, mirroring how employees only pay tax on wages after the employer share.
Calculate the self-employment tax
Apply the 15.3% self-employment tax rate: 12.4% for Social Security (up to the wage base limit) and 2.9% for Medicare (on all net earnings). The form walks through this calculation.
Determine the deductible portion
Calculate half of your self-employment tax on line 13. Report this amount on Schedule 1 of Form 1040 as a deduction, reducing your adjusted gross income.
About Schedule SE (Self-Employment Tax)
Who needs this form
Anyone with net self-employment earnings of $400 or more during the tax year. This includes sole proprietors, freelancers, independent contractors, and partners in a partnership.
Where to submit
Attach Schedule SE to your Form 1040. The self-employment tax is reported on your 1040, and half of it can be deducted as an adjustment to income on Schedule 1.
Source and content freshness
- Reviewed: 2026-02-16
- Check the latest official form instructions for the filing year that applies to you.
- Filing deadlines may shift for weekends and holidays. Verify due dates with official instructions.
Common mistakes to avoid
- Not filing when net self-employment earnings exceed $400
- Forgetting to deduct half of self-employment tax on Form 1040
- Using gross income instead of net income from Schedule C
- Not realizing partnership income is also subject to self-employment tax
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