How much does it cost for a baby to the age of twenty one?

It varies depending on the health of the child and the socio-economic status of the parents of the child. Generally, you can add the cost of your housing to the cost of your food, clothing, entertainment, etc. and find that figure for 1year. Increase this amount by 2.5% to get the cost for year 1. Raise that figure by 2.5% for each year until year 6. Then 3.5% through year 13, 8% through year 16, 7% through year 18, then reduce the year 18 figure by 33.3% for year 19, 66.6% for years 20 and 21. Add all annual totals together to get the final estimate. $700,000 is a conservative estimate.