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Negative Amortization
A gradual increase in mortgage debt that occurs when the monthly payment is not large enough to cover the entire principal and interest due. The amount of the shortfall is added to the remaining balance to create "negative" amortization.

Net Cash Flow
The income that remains for an investment property after the monthly operating income is reduced by the monthly housing expense, which includes principal, interest, taxes, and insurance (PITI) for the mortgage, homeowners' association dues, leasehold payments, and subordinate financing payments.

Net Worth
The value of all of a person's assets, including cash, minus all liabilities.

No Cash-Out Refinance
A refinance transaction in which the new mortgage amount is limited to the sum of the remaining balance of the existing first mortgage, closing costs (including prepaid items), points, the amount required to satisfy any mortgage liens that are more than one year old (if the borrower chooses to satisfy them), and other funds for the borrower's use (as long as the amount does not exceed 1 percent of the principal amount of the new mortgage).

Nonliquid Asset
An asset that cannot easily be converted into cash.

Note
A legal document that obligates a borrower to repay a mortgage loan at a stated interest rate during a specified period of time.

One way to think of the mortgage note is that it is a legal "IOU." Often called the promissory note, it represents your promise to pay the lender according to the agreed upon terms of the loan, including when and where to send your payment.

The note lists any penalties that will be assessed if you don't make your monthly mortgage payments. It also warns you that the lender can "call" the loan -- demand repayment of the entire loan before the end of the term -- if you violate the terms of your mortgage.

Note Rate
The interest rate stated on a mortgage note.

Notice of Default
A formal written notice to a borrower that a default has occurred and that legal action may be taken.