<prompt> Human: He forgot to include around 1200 of additional income that I made from Amazons Mechanical Turk site last year. Luckily its not enough to put us in another tax bracket. Should I just not worry about it this year? sorry if this is the wrong sub...the tax sub doesnt have that many subscribers so I wasnt sure i would get an answer.Edit: Lots and lots of good information here! Thanks to everyone for your input. Im on my way to being a lot more tax-smart!Assistant: Doesnt matter whether it would put you in another tax bracket, you still owe taxes on it. You need to file an amended return.Edit: Since you brought up tax brackets, I have a feeling you have a common misunderstanding of exactly how they work. If the 1,200 had pushed your total taxable income into a higher bracket, you would only pay the higher tax rate on the income that exceeds that amount. You wouldnt owe additional taxes on the income you have already reported.Human: Doesnt matter whether it would put you in another tax bracket, you still owe taxes on it.I realize that I have to pay taxes, just figured it wouldnt be as big of a hit since it isnt increasing my tax percentage on my overall income. Thanks for the info!  <response>: Crossing into a new tax bracket does not cause the amount of taxes you owe to jump up. This is the benefit of a marginal tax rate.For single people, the first 8,925 you earn is taxed at 10. The money you earn from 8,926 to 36,250 is taxed at 15. The money you earn from 36,251 to 87,850 is taxed at 25, etc.If you filed your taxes and claimed 36,000 in income, and then found that you forgot to claim 1000, your taxes would go up by 225 250 .15 750 .25. The first 250 fills up your 15 bracket, and the 750 is taxed at the 25 rate. 