"I am 21 and a fulltime student, claimed as a dependent by my parents."---> As a dependent of your parents, you need to file your return if your unearned incoem(i.e., interest income or dividend income or etc) was over $950 or your earned income was $5,700; or your gross incoem was the larger of $950 or earend incoem ( up to $5,400)+$300, $5,700; however, if you ar sbject to your tax refund, then you should file your eturn.
“I was hired as a summer intern last summer in a town 7 hours from my home, and in another state.”---->Unless there is reciprocity agreement between your home state and the state where you work, you need to file the state return to pay tax on your earnings in the state and you can claim state tax credit on the taxes paid in the state on your home state return( as long as the state tax rate of the other state is higher than that of your home state, or you can claim state sales taxes if it is larger than your state taxes.). Reciprocal payroll tax agreements between states usually eliminate the need for filing and paying income taxes in multiple states.
“ I was paid a moving allowance and a housing allowance, and both were reported as income on my W-2.”----> Your employer uses nonaccountable reimbursement plan as he doesn’t require you to substantiate your job related expenses. Under the plans, you need to include the reimbursements or allowance as your gross income on your return( if you need to file your return). You then deduct all documented expenses using Form 2106 or Form 3903 and on 1040 Sch A.
“I also drove 45 miles per day (one-way) to work. Can I claim any of my moving, rent, furniture rental, travel, or food expense as a deduction? If so, what form do I use to repor it?" --->Commuting cost is a deductible employee expense if commuting to the temporary site is expected to last one year or less. Payments to you for travel and other necessary expenses of your employer’s business under a non-accountable plan are your wages on your W2 and subject to income tax withholding and payment of social security, Medicare,FICA Taxes, I mean, and FUTA or even SUTA( depending on state)taxes. You can deduct moving, rental( as temporary living expenses), job related travel and other job related expenses , not food or private purpose travel expenses on form 2106 or on Form 3903, as said above, and report them on your 1040 Sch A; Most employee business expenses are considered miscellaneous expenses and are deductible only to the extent that all your miscellaneous expenses exceed 2% of adjusted gross income. However, exemption from FICA taxes depends on your enrollment status being at least half-time or etc. The exemption can change with each payroll period, depending on your enrollment status, especially during the summer and breaks between semesters; So, I guess you need to check it with your employer to see if you are subject to FICA Tax exemption.
“Also, I need to claim taxable scholarship income from a 1098-T. I am not sure where to claim that.”----> You may be able to claim an education credit( either AOC, or lifetime learning credit but not both of them at the same time) as a student enrolled at or attending an eligible educational institution. The credits are based on the amount of qualified education expenses paid for you in 2010 for academic periods beginning in 2010 and in the first 3 months of 2011. Please see the Form here; http://www.irs.gov/pub/irs-pdf/f8863.pdf