The valuation of assets, both tangible and intangible, is an important element of corporate finance. Putting a price tag on ideas is almost impossible, and in the new economy, where companies grow dependent on intangible assets all the time, market volatility can be attributed in large part to...

Fernandez [2004; The value of tax shields is NOT equal to the present value of tax shields. Journalof Financial Economics, 73, 145–165] claims to derive a formula for the valuation of debt tax shieldsfor firms with cash flows that growperpetually at a constant rate.We showthat his formula is...