You are allowed to take the GMAT once every 31 calendar days. The maximum number of times you are permitted to take the test is five times in a rolling 12-month period. This policy applies even if you decide to cancel your test scores after taking the exam. If you take the GMAT more times than allowed, you will forfeit your GMAT scheduling fee, your test scores will not be reported and you will be prohibited from future GMAT testing.
To register for the GMAT or take a free computer-adaptive practice test, visit the GMAC official website at www.mba.com.
To learn more about the Computer Adaptive Test (“CAT”) format and how the GMAT is scored, please visit http://www.mba.com/mba/thegmat/teststructureandoverview.