Credit: 16.5% if gross salary is ₩55M or less, otherwise 13.2%. You only get back up to the tax you owe.
Taking the money out other than as a pension (for example, closing the account before 55) is taxed 16.5% on the credited contributions and investment gains, with some legal exceptions — check before leaving Korea.
FAQ
How much do I get back for ₩9M in pension savings and IRP?
₩1,485,000 (16.5%) if your salary is ₩55M or less, ₩1,188,000 (13.2%) if higher.