Want to Minimize the Financial Hit of Having Kids? Have Them After Age 30

Is there a wage penalty for motherhood? Research suggests so, showing that having a child has a negative impact on women's earnings, while fatherhood offers a wage bonus for men. For each child a woman has, her wages decrease by about 4 percent, whereas a man's wages rise by about 6 percent when he becomes a dad, perhaps because employers start to see these earners differently once they've become fathers.