Turbotax basically is doing the best it can for you to pay the least in taxes. They have there program set as you plug your numbers, they show you the best possible way to do your taxes with what they know. If you don't have enough deductions to add up to more than the standard deductions, it will figure that taking the standard deduction is best for you. Since your married filing jointly, the standard deduction there is $24,000. If you don't have more than $24,000 in deductible expenses, then you are best to file using the standard deduction.
