Ms. Noteboom, a single taxpayer, projects that she will incur about $13,500 of expenses qualifying as itemized deductions in both 2018 and 2019. Assuming that her standard deduction is $12,000 in both years, compute the effect on taxable income for each year if she can shift $2,500 of deductible expenses from 2018 and 2019. 2018 taxable income by 2019 taxable income by