To calculate the reduction in the tax bill, first, we need to determine how much $1200 represents as a deduction from her taxable income. Since she's in the 28% tax bracket and claims the standard deduction, we'll assume she doesn't have any other deductions that would affect her taxable income. In this case, every dollar of tax credit reduces her taxable income by a dollar. So, the reduction in her tax bill would be 1200 × 0.28 1200×0.28, because she's in the 28% tax bracket. Reduction = 1200 × 0.28 = 336 Reduction=1200×0.28=336 So, her tax bill will be reduced by $336.