I asked a lawyer friend about that once, and it's pretty complicated. If loan money is used jointly, like if you live with your spouse and use loan money to pay those joint living expenses, they can make the argument that the debt is marital debt since both partners benefited from it. How long you've had the debt would also matter, since the longer you've had it, the longer both spouses have benefited from the increased earning power of the degree you got from it. A lot also depends on whether the degree is considered individual or marital property. In the state where I got married, professional degrees earned during marriage are considered marital property, but the same doesn't hold in other states. So if I had stayed there and gone to school there, the degree would be marital property and the debt likely would be also. Some of this stuff may be able to be hashed out in prenups or in postnups drafted before you actually take on the loans in the first place, but anyone who's worried about that should really talk to a lawyer to find out what is and isn't doable. Just because both people sign an agreement doesn't mean it'll hold up in court years later, so consulting a good lawyer is really important.