"Plan maturity" refers to the stage of development or progress a plan has reached. It indicates that a plan has advanced in its growth, becoming more complete, refined, and ready for implementation. Full definition
Here it is important to remember in endowment policies, you get the sum assured upon maturity, whereas in term plans no maturity benefit is paid out. (policybazaar.com)
The renewal request is made within 2 years from the due date of first premium due date before plan maturity. (policybazaar.com)
You can choose this plan if you want a benefit on plan maturity. (turtlemint.com)