N.A.D.A.
National Automobile Dealers Association

N.A.D.A. Guidebook (blue book)
see Marine Appraisal Guide

negative amortization
Increase in principal balance that occurs when monthly payments are not large enough to pay all interest due on a loan, usually caused when payment caps prevent sufficient payment increases. Unpaid deferred interest is added to the loan balance, which means that the borrower ends up owing more than the original amount of the loan.

Net
After taxes.

net effective income
Gross income minus federal income tax.

non-assumption clause
A statement in a loan forbidding the assumption of the loan by another borrower without the prior approval of the lender.

nondischargeable debt
Debt, such as taxes, that cannot be forgiven in a bankruptcy liquidation.

Note
Legal document stating the terms of a debt and a promise to repay it.

notice of default
Written notice to a borrower that a default has occurred and that legal action may be taken.