Narcissists do not like to pay money that they owe

Narcissists don’t willingly meet their financial obligations. Child support? Alimony? Personal Loans? Taxes? Nope.
If it’s not fun for them, they simply ignore it.

If a narcissist owes you money, you will probably never see it without a fight. They simply do not feel like they should have to pay for things that aren’t directly benefiting them. They just do not understand the basics of integrity and honoring commitments because all they can think of is their own personal gain and pleasure. They don’t care who they hurt and they don’t care if their refusal to pay destroys someone else’s credit.

http://facesofnarcissism.com/2015/03/03/narcissists-do-not-like-to-pay-money-that-they-owe/