Whole life, universal life and indexed universal life (IUL) policies all build cash value, but each uses a different growth structure. In every case, a portion of the premium beyond the cost of insurance is placed into a separate cash value account that grows on a tax-deferred basis.
Whole life policies grow at a guaranteed rate set by the insurer, while universal life policies credit interest based on a declared rate tied to market benchmarks. IUL and variable universal life (VUL) policies link growth to market indexes or investment sub-accounts, meaning returns can fluctuate and aren't guaranteed.
You can borrow against accumulated cash value without triggering taxes, but unpaid loans reduce the death benefit and continue to accrue interest until repaid. If the insured dies with an outstanding loan balance, beneficiaries receive the death benefit minus the amount owed.









