Yes. Money you earn from a side hustle is taxable income, whether it comes from driving, freelancing, selling crafts, tutoring or consulting — and whether or not anyone sends you a tax form. What changes is how it is taxed, and that is where most first-time side earners get surprised.
Two taxes, not one
Side-hustle profit can be hit by two separate federal taxes:
- Income tax, at your normal bracket rate. If you also have a day job, side income is stacked on top of your salary, so it is often taxed at your highest bracket.
- Self-employment tax of 15.3% on 92.35% of your profit, which covers Social Security and Medicare. It applies once your net earnings from self-employment reach $400 for the year.
The second one is the surprise: an employer normally pays half of these taxes for you. On a side hustle, you pay both halves. Our self-employment tax calculator shows exactly how much that is.
You owe tax even without a 1099
Clients and platforms send information returns only above certain amounts:
| Form | Who sends it | When (2026 payments) |
|---|---|---|
| 1099-NEC | Businesses that paid you for services | $2,000 or more in the year |
| 1099-K | Payment apps and online marketplaces | Over $20,000 and over 200 transactions |
Those thresholds decide whether they must file a form — not whether you owe tax. Income below them is still taxable and still belongs on your return. Keep your own records of every payment.
Report profit, not revenue
Side income goes on Schedule C with your Form 1040. You report what you earned and subtract ordinary and necessary business expenses: supplies, software, the business share of your phone, mileage driven for the business and so on. Tax is calculated on what is left. See deductions freelancers often miss.
Paying during the year
If you expect to owe $1,000 or more when you file, the IRS expects you to pay during the year rather than all in April. You have two options:
- Quarterly estimated payments — four payments a year. Use the quarterly estimated tax calculator to size them.
- Extra withholding at your day job — raise the extra amount on your Form W-4. Withholding is treated as paid evenly through the year, which is often the simplest route for side earners.
Either way, a habit helps: move a fixed percentage of each payment into a separate savings account. The set-aside calculator gives you that percentage.
Hobby or business?
If you do something mainly for fun and only occasionally sell, the IRS may treat it as a hobby. Hobby income is still taxable, but under current law hobby expenses cannot be deducted. A side hustle run to make a profit, with records and a businesslike approach, is a business. Read hobby vs business income for the details.
Don’t forget your state
Most states with an income tax also tax side-hustle profit, and some cities do too. Check your state’s rules for estimated payments.