<prompt> Human: Hi, I just finished a four month internship in the U.S. I was paid on a bimonthly cycle based on timecards that were punched in. Towards the end, I missed submitting my timecard for two straight pay cycles. As a result, in the next pay cycle, I received a gross income for one and a half month of work. The problem is that for some reason, this income was taxed much more 42 compared to the usual 25 I get deducted every two weeks. After talking to Payroll, they said I may have been put into a higher tax bracket, but is this a mistake? Should I pursue Payroll and try to make them amend this, or is it just something that I have to wait for until I file my tax return? I hope someone can help! Thanks. On an additional note, I also made the mistake of claiming 0 allowances on my W4 form, when I was supposed to claim 2. Will I still have a chance to claim these allowances on my tax return, or is it too late? Thanks.  <response>: They dont. Taxes withheld are not the same as taxes owed. See taxes withheld vs. actual tax burden 