Offer your thoughts or opinion on the input financial query or topic using your financial background.

Advantages of paying more of your mortgage while you know you won't continue to live there your whole life
The mortgage is a debt and you pay interest on it, typically more than you can earn elsewhere (especially once taxes are taken into account.) By lowering the principal, you lower the total interest you pay. This is true whether you sell the house after 1 year, 10 years, or 100 years. In your case, prepayments made in the next few years would mean that when you sell, your mortgage principal would be lower than it otherwise would have been, and your house equity will be higher. You can therefore either move up to more house for the same monthly payment, or have a lower monthly payment for the same kind of house. Either of those are good things, right? Now is the easiest time to find a little more money, so do it if you can. Later you will have more obligations, and develop a taste for more expensive things (statistically speaking) and therefore find a few hundred a month much harder to come by.