Who developed webTOD?

webTOD was first developed in 2004 by Kevin Kortje, a Canadian Chartered Accountant with over 30 years of experience in software development, Canadian taxation and accounting systems. Initially, the webTOD application was developed and used primarily as an independant testing platform for verifying the accuracy of payroll deduction calculations in custom payroll software applications being developed by the company. We had previously been using CRA's TOD software to provide independant verification of calculated deductions, but found that the TOD software did not handle some of the more complex payroll calculation examples documented in CRA's publication T4127 - Payroll Deductions Formulas for Computer Programs. The webTOD application was developed entirely in PHP, a popular HTML-embedded scripting language, with some client-side Javascript code used for HTML form input validation and screen formatting. webTOD also incorporates the WebFX Tab Pane utility Created by Erik Arvidsson (

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