The short answer: yes. Side income is taxable whether or not a company sends you a 1099 form. The IRS says all income is taxable unless the law specifically excludes it, and the form is just a reporting tool.
This is educational content, not tax or financial advice. Check IRS.gov or talk to a tax professional for your situation.
“I got no 1099, so it does not count” is wrong
Platforms send forms only when you pass their reporting thresholds. Payment apps and marketplaces use Form 1099-K, and the dollar threshold for it has changed more than once in recent years, so do not rely on a form arriving. The IRS guidance on Form 1099-K states that income must be reported even if you do not receive the form. Keep your own records of every payment.
What you actually report
- Income and expenses go on Schedule C. You pay tax on the profit, not on the gross.
- Self-employment tax applies when net earnings are $400 or more. Details in our guide to the $400 rule.
- Expenses you can usually deduct include software, supplies, platform fees and a portion of mileage, as long as they are ordinary and necessary for the work. Keep receipts.
Example: $1,000 of side income
Assume you earn $1,000 and have $200 of expenses, so net profit is $800.
| Item | Amount |
|---|---|
| Net profit | $800.00 |
| Self-employment tax (15.3% x 92.35% x $800) | about $113.04 |
| Income tax if you are in the 12% bracket | about $96 before the deduction for half of SE tax |
| Rough keep | about $591 |
That is an estimate to show the order of magnitude: a bit over 25% of the profit may go to taxes at that bracket. Your state may add more.
Estimated payments: the part people miss
When you do not have an employer withholding tax, the IRS generally expects quarterly estimated payments if you will owe $1,000 or more. The four deadlines fall in mid-April, mid-June, mid-September and mid-January. For the 2026 tax year, the last one is due in January 2027. Missing them can mean an underpayment penalty. A simple habit: move 25% to 30% of each payment into a separate savings account the day you get it.
That account is a good place for a high-yield savings account. See high-yield savings vs money market.
Who this is for, and who can skip it
For: anyone paid through PayPal, Venmo, Zelle, Etsy, Upwork, cash or checks. Skip it only if the activity is a real hobby with no profit motive, which has different rules, and that is worth confirming with a professional.
Our take
The cheapest tax mistake to avoid is not tracking income from day one. Open a separate checking account for the side hustle, record every payment, and set aside a quarter of it. At filing time, that discipline is worth more than any deduction.
This is educational content, not tax or financial advice.