Re: [PHP] IRR Function in PHP -- MORE Info

I received an Excel Spread sheet with built in calculations for creating our rate sheets that we pass out to our branches and so on. In this rate sheet to calculate our APR the spread sheet calls built in Finance Functions IRR Internal Rate of Return PMT Calculates a Payment PV Calculates

Re: [PHP] IRR Function in PHP -- MORE Info

Hey Jonathan-- This page has an excellent description of what the IRR is and how it's calculated. http://invest-faq.com/articles/analy-int-rate-return.html I'd love to help more than this, but this is quite a bit of work and without the actual spreadsheet I'm not sure that I'd be able to give