There are universities that offer a year’s time to complete your master’s degree. But, you might find it quite difficult to do along with your duty hours of either teaching or research assistantship. Generally it would take 18 months to complete the thesis for the master’s degree. Again, some courses have prescribed curriculum and that does not allow you to finish off your course within one year. But, if you are for pursuing a MBA degree, there are many business schools that might allow you to finish the course off in one year.