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Jack M. Guttentag is Professor of Finance Emeritus at the Wharton School of the University of Pennsylvania, and founder of GHR Systems, Inc., a mortgage technology company.

Recent Articles
July 26, 2010
Will the "Restoring American Financial Stability Act of 2010" Improve Mortgage Disclosures?
The Act takes a step toward improved mortgage disclosures by combining responsibilities now divided between the Federal Reserve and HUD, and a step backwards by giving Congress a more prominent role. ... Read Article

July 21, 2010
New Mortgage Rules Disadvantage the Already Disadvantaged
This article predicts that the new financial stability act will cause the mortgage market to split into qualified and non-qualified sectors, with borrowers who cannot qualify in the first sector paying an additional price penalty. ... Read Article

July 16, 2010
My Involvement in an Internet-Based Mortgage Scam
This articles describes how my name is being used by a Nigerian scamster to collect upfront fees on loans that will never be delivered. ... Read Article

July 16, 2010
Does Property Value Decline Eliminate a Second Mortgage Lien?
This article advises borrowers who have second mortgages and negative equity how to negotiate a balance reduction or other deal with the second mortgage lender. ... Read Article

July 12, 2010
Should You Lock ASAP?
Locking ASAP protects the borrower not only against a rise in market rates, but also against gamesmanship by the loan originator. ... Read Article

Tools
Mortgage Calculators
Formulas
Glossary
Wholesale Mortgage Prices
Spreadsheets
Tutorials
Choosing Between ARMs and FRMs
Selecting Among Different FRMs
Selecting Among Different ARMs
Libor ARMs
Option ARMs
Selecting a Rate/Point Combination
How Large a Down Payment to Make
Whether to Waive Escrow
Whether to Accept a Prepayment Penalty
Locking the Loan
Selecting Documentation
APR
Interest Only Mortgage
Refinance Break-Even
Generating ARM Comparison Tables
Mistakes to Avoid
Buying a House
Building a House
Shopping for a Mortgage
Qualifying for a Mortgage
Selecting the Mortgage
Locking the Price
Taking a Second Mortgage
Refinancing
Managing the Mortgage