Biruwa:

Disregard the previous comments. It may be harsh read, if I write, why not get a 1040 form and an instruction book from Library or a post office. It will take 3-5 hours to finish it and will give you an idea about tax. Then you will be asking yourself, why I asked this question.
In short: If you have a house, you pay Mortgage interest and Real estate tax and your withheld itself is higher than the standard deduction given to the tax payer according to their filing status. Please; Read the 1040 tax instruction first, it will be helpful for you future tax work.

Thanks for listening.