The main purpose of the Working Families Tax Cuts is to provide significant tax relief to American families, particularly those earning less than $400,000 per year. This legislation aims to prevent a large tax increase and to put more money back into the pockets of taxpayers, helping to make living costs more manageable. Key provisions of the Working Families Tax Cuts include several important tax benefits. Families of four earning under $73,000 will generally not owe any federal income tax.