What is overfunding a life insurance policy?

Overfunding refers to paying premiums significantly above the base minimum required to keep a policy in force, with the goal of maximizing tax-advantaged cash value accumulation. The strategy is most commonly applied to whole life and IUL policies.

The IRS limits how much you can overfund a life insurance policy before it loses its tax-advantaged status and becomes a Modified Endowment Contract (MEC). A MEC retains the death benefit but loses preferential tax treatment for withdrawals and loans—distributions are treated as income first and become subject to a 10% penalty before age 59½.

Properly designed, an overfunded policy below the MEC threshold accumulates cash value rapidly while preserving tax-advantaged access through loans and withdrawals. This strategy is often called infinite banking, premium financing, or a life insurance retirement plan (LIRP), depending on implementation.

Overfunding works best with long time horizons and adequate funding discipline. It is not appropriate as a short-term savings strategy due to front-end policy costs. An agent specializing in cash value optimization can design a policy with the maximum safe premium limit for your situation.