re: Why do I owe money in taxes this year versus last year when little has changed?

quote:

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my base pay went up but that's it - still within the same bracket.

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Do you itemize? Did this change?

Is your additional income causing phaseouts of itemized deductions, exemptions, and credits?

Did your withholding increase enough to "keep pace" with the increased earnings?

Is your income earned pretty evenly through the year, or does it go up and down?