Amended

[Bigal22353]

 received my refund but had to submit amended return.  I added only $9,400 to income but the tax rate was $2,470.  Doesn't make sense.  Waiting to send in amended until I get answers.

[MinhT1]

When you increase taxable income, the increase of tax liability is not a straight forward calculation as many other income-related credits or deductions will change and affect your tax liability.

One possible change is that your increased income may lower (or totally eliminate) your Earned income credit.

[Bigal22353]

Not sure I understand.  I took std deduction, was at 99K taxable and went to 108K taxable.  Was at 8.7K tax to 11.2K tax.

[JulieS]

If you are filing Single or Married filing separately your highest tax rate is 24%. When you add income on top of your previously filed income you just pay 24% of the added income in additional tax. 

In addition to that, the extra income may have changed your ability to claim certain credits or deductions.