If you already have a house in Kathmandu and wish to go back to Nepal, then $100,000 is all you need. That would be enough to ensure you aren't uncomfortable in your initial 5-6 months in Nepal (i.e. if you don't manage to find a job). However, that is very unlikely because IT skills are very much in demand right now in Nepal and your US experience would make you an excellent candidate for IT jobs in Nepal. Which means, the $100,000 you take with you can become a nice real estate investment (buy some land).