Hi We are migrating a report from Crytal to SSRS 2008. It has a Yield function(Calculates Yield to maturity). Is there any equivalent in SSRS 2008. or alternatively is there any way to calculate in SSRS. Even Microsoft Excel has this Yield Function. Any help is greatly appreciated.

There is no yield function in SSRS 2008 (or any version of SSRS). If you need to calculate this value, you will need to have a dataset that has all the values required for the mathematical formula and then build an expression for the calculation (redemption, rate, frequency, etc.).