A Useful Refinancing Calculator

BY Paul Solman  September 1, 2010 at 4:06 PM EDT

Paul Solman: With all the hullabaloo about low interest rates and refinancing of mortgages, I’d been looking around for reliable refinancing calculators on the Web and have found one with an excellent pedigree.

It’s the product of a well-known Harvard economist we once interviewed on the NewsHour, David Laibson, and whose course on behavioral economics we audited a few years ago. The calculator is up on the website of the National Bureau of Economic Research at http://zwicke.nber.org/refinance/index.py.

It’s also easy to use. I thought others might find it useful, as I have.