MAT Registration May 2021 is open for CBT, IBT and PBT MAT exams from March 31, 2021. The MAT May 2021 exam will be held in three modes – CBT MAT, IBT MAT and PBT MAT. May MAT 2021 is the last national level MBA entrance test for MBA admission 2021. Key details about Mat MAT 2021 registration process are given below