and your second income is taxed at your marginal rate, to pay for a $1 of child care you need around $1.33 to $1.50 in income. Put another way, avoiding $1 in expenses is like earning up to $1.5 at work.

But the real issue is what the article points out, that this often leaves the stay at home parent “trapped” and dependent on the working spouse. What do you do when you’ve been out of the workforce 20+ years, kids out of the house (no child support), and you need to support yourself now?