A mixed methods research design, which is a complex approach, combines both quantitative and qualitative data in a single study or succession of studies. This design can be particularly functional for exploring complex research questions that cannot be fully answered by using a single research design. Moreover, a mixed methods design is necessary to examine the relationships between different variables because examining the relationships between diverse variables is not viable just through a single research design. This design is required to complement and cater to the increasingly multifarious requirements of contemporary researchers. This article, which explores and discusses types, purposes, strengths, challenges and criticisms of the mixed methods research design as its objectives, stems from an analysis of some notable works in the field. It is grounded on the secondary qualitative data accumulated in the forms of words from journal articles and books related to the research designs. It assists the novices in the field of research in particular and other researchers in general by providing them with an overview of mixed methods design along with its types, such as convergent parallel, explanatory sequential, exploratory sequential, embedded, transformative and multi-phage designs.

Tax knowledge plays vital role in tax compliance. The objective of this study is to assess overall and faculty wise level of tax knowledge among lecturers of Makawanpur Multiple Campus. Descriptive research design is applied by adopting survey method to collect data. Out of 83 total lecturers, 69 are selected for the study as respondent through stratified sampling method with proportionate sampling technique by making four clusters Management, Science, Humanities and Education. Questionnaire has been administered with five points likert scale ranging from not at all aware(1) to extremely aware(5).The results shows that overall tax knowledge of lecturers are less than average (i.e. slightly aware). However, lecturers of management faculty who have studied tax education have higher than average i.e. very aware. Result indicates that tax education is important for understanding taxpayer’s right responsibility, allowable deduction and other technical tax knowledge. It is concluded that Curriculum Development Center of Tribhuvan University and Inland Revenue Department should coordinate to develop curriculum and technical tax knowledge program among taxpayer for minimizing non-compliance problems by enhancing tax knowledge.