<prompt> Human: Hey Everyone.Im admittedly not as knowledgeable about taxes, but helping someone use TurboTax. This person has earned 25k on W2 see it here and another 7500 on 1099-MISC. When entering this information I noticed two scenarios:1 Just W2 entered no 1099-MISC get a massive of Federal Tax Refund 1462 andCalifornia Tax Refund 426.2 W2 1099-MISC entered, I get Federal Due 640 andCalifornia Tax Refund 172.That suggest in 2 above that he is paying over 2000 on 7500 earnings on Federal Taxes alone, let alone the 250 on CA.Is that right? That is around 30 taxes.I attached his W2 with personal information blocked out hereHelp would be much appreciated.edit: Thanks to uMcSchwifty-Time for pointing out a mistake on my end, so I corrected the CA tax refund to 250, not 800.  <response>: Yes.Youll owe self employment tax in addition to income tax on the 1099-MISC income.The self employment tax is BOTH SIDES employer AND employee of social security and medicare, equivalent to 15.3 of 92.35 of your income from self employment.Youll owe that PLUS income tax on the 1099 MISC. Since NO tax was withheld on the 1099-MISC, and you didnt make estimated payments, you have to pay that all at tax time. Youre used to it being slowly taken out of your paycheck and showing up on your W-2, where the burn isnt near as bad.You get to deduct half of your self employment tax from your taxable income for income tax purposes on Form 1040 to help make up for the gut punch of paying both sides of FICA, but it still hurts your feelings.ALSO: One important point. You can deduct all kinds of things, legally, as business expenses if you incurred expenses in the operation of your business from your GROSS income. This has the effect of reducing your taxable self employment income and thus reducing your taxes. Dont just breeze through that. Understand what you can deduct and take every deduction you are legally entitled to, but nothing more. 