Lizatola, I also recommend a lawyer for this. But, if I may also suggest the following. Work out what monthly payments you need/expect, and for how long for each item ($a per month for x years for tuition, $b per month for y years for support, etc.). Once you have done that, only then work out the lump sum that will generate that flow of payments over the time horizons you need. The lump sum will turn out, I bet, to be a lot bigger than you and he have in mind, because interest rates are so low. If you need help doing that, pm me (I'm an economics professor, so I do this a lot).