Determining the Debt Payments-to-Income Ratio. Louise McIntyres monthly gross income is $2,000. Her employer withholds $400 in federal, state, and local income taxes and $160 in Social Security taxes per month. Louise contributes $80 per month for her IRA. Her monthly credit payments for Visa, MasterCard, and Discover cards are $35, $30, and $20, respectively. Her monthly payment on an automobile loan is $285. What is Louises debt payments-to-income ratio? Is Louise living within her means? Explain your answer.