I'm starting a new job....part-time.....no more than 20 hrs.....maybe some overtime....pay rate: $12.......Last year (different job) was my first time filing taxes and I filed as Head of Household (Me and my Mother as dependents). My living situation has not changed this year, nor will it change. If I write '0' on line 5, the IRS wont have access to my money all year, which I can invest and use for myself. If I write '2' I'll get a tax refund, correct? What is the best thing to do? I'm young and want to start making the most out of my earnings. Thank you : )