Undergraduate Tuition. Tuition for Bentley University is $40,990 for the 2014/2015 academic year. This is 63% more expensive than the national average private non-profit four year college tuition of $25,224. The cost is $12,761 and 45% more expensive than the average Massachusetts tuition of $28,229 for 4 year colleges. Tuition ranks 66th in Massachusetts amongst 4 year colleges for affordability and is the 19th most expensive 4 year college in the state. Price does not vary by residence.