The cost of software problems or errors is a significant problem to global industry, not only to the producers of the software but also to their customers and end users of the software. There is a cost associated with the lack of quality of software to companies who purchase a software product and also to the companies who produce the same piece of software. The task of improving quality on a limited cost base is a difficult one. The foundation of this thesis lies with the difficult task of evaluating software from its inception through its development until its testing and subsequent release. The focus of this thesis is on the improvement of the testing & quality assurance task in an Irish SME company with software quality problems but with a limited budget. Testing practices and quality assurance methods are outlined in the thesis explaining what was used during the software quality improvement process in the company. Projects conducted in the company are used for the research in the thesis. Following the quality improvement process in the company a framework for improving software quality was produced and subsequently used and evaluated in another company.