You are responsible for the taxes, but an estimate of those taxes will be withheld from your paycheck. However your employer doesn&#x27;t know all the details of your tax situation, so the amount withheld is not exactly correct.  Each year by April 15 you file a &quot;tax return&quot; which calculates how much you actually owe, and you&#x27;ll either get a refund or owe.  (The taxes withheld from paychecks are set up so that most people get refunds.)