I posted this question yesterday but didn't get any helpful response. Would you please advice? Thanks a million.
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My H1 started in Jan. 2003. I just noticed that I wasn't charged social security/FICA tax for the entire 2003. I know that I am supposed to pay for that tax. I think that my company's Payroll Dept. forgot to change it when my H1 started. So, what should I do? Tell IRS immediately or contact my company's Payroll Dept.? Is this a serious problem?