Very likely it is not income tax but self employment tax...

Can you explain why I owe taxes when my income is so low?

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The only way a taxpayer ends up owing taxes is if enough taxes were not deducted from their payroll throughout the year. To learn more, please see the informational TurboTax video; Why Do I Owe The IRS.

Very likely it is not income tax but self employment tax that you are looking at. If you have more than $400 of self -employment income (including most 1099-MISC) you have to pay about 15% of that. But it's not income tax. It's Social Security and Medicare.