## Defeasance

Important This post and spreadsheet has been updated. Please click this link to Defeasance 4.0 If you are involved in commercial lending or perhaps municipal bonds you are probably familiar with the term defeasance. Commercial loans normally have hefty prepayment penalties, while some loan documents prohibit prepayment altogether. Commercial loan defeasance is a collateral substitution […]

## Forward Rates Part 3: Spot Rates

A newer version with four bootstrap methods can be found at: A Forth Way To Bootstrap Spot Rates This method of calculating spot rates is referred to as the bootstrapping method. Each spot rate (or zero coupon) along the Treasury yield curve needs the previous spot rates, in order to discount the current securities coupon payments. […]

## Forward Rates Part 2: Forward Yield Table

In the last post, Forward Rates Part 1: Gap Analysis, we calculated the forward rate for a two year fixed rate investment, five years from now. Here is a review of the math: Why is everything multiplied by 2? That’s because we are assuming semiannual compounding. First we calculate the value of \$1 in 5 years at […]

## Interpolation

There has been an addition to the spreadsheet, explained in the post:  Simplified Linear Interpolation of Treasury Rates Back in the day, when I was building a pricing model for mortgages that would be sold to FNMA, I ran into a problem with their pricing tables. The table below shows the problem. The X column […]