OK. We carefully ran the NPC at an Ivy and a T10 (my top 2 schools) using our 2019 tax return. The net cost to attend as a result of the $33,000 increase in adjusted gross income in 2019 over 2018 increased by these sums:
Ivy: $25,500 more
T10: $23,000 more
That’s crazy. That’s taking 100% of the after-tax value of the $33,000 income increase. Something is not right. Is the NPC not reliable? Are my first year offers artificially (deliberately?) low?