The number at the center of a universal life policy is the policy value, which Model 585 section 3.G defines as "the amount to which separately identified interest credits and mortality, expense, or other charges are made under a universal life insurance policy." It is worth being careful with it, and the regulation's own drafting note says why: "Care should be taken not to place undue emphasis on the policy or 'account' value. Very often the policy value is not directly available to the policyowner." What an owner could actually walk away with is the net cash surrender value, which the same regulation defines as "the maximum amount payable to the policyowner upon surrender." Those are different numbers whenever a surrender charge or a loan is outstanding.
The guarantees are narrower than the sales conversation usually implies, and the regulation draws the line in a way that is easy to check. Section 7.C requires the policy to "provide guarantees of minimum interest credits and maximum mortality and expense charges," and then adds: "All values and data shown in the policy shall be based on guarantees. No figures based on nonguarantees shall be included in the policy." So the contract contains a floor rate and a ceiling on charges, and nothing else. Every attractive projection a buyer sees, the crediting rate the insurer is paying today and the charges it is actually deducting today, comes from an illustration that sits outside the contract. A buyer who wants to know what the insurer is obliged to do reads the policy; a buyer who wants to know what the insurer currently intends to do reads the illustration, and the gap between the two is the product's central risk.
That risk has a specific shape. The cost of insurance is charged against the policy value each month and rises with the insured's attained age. In the early years it is small relative to the premium, so the account builds. Later it is large, and if the account has been underfunded, credited less interest than illustrated, or drained by loans, the charges start consuming principal. The policy does not fail quietly: section 7.F requires written notice to the owner's last known address at least thirty days before coverage terminates, and the annual report required by section 9 has to disclose, for a flexible premium policy, whether on guaranteed assumptions the net cash surrender value "will not maintain insurance in force until the end of the next reporting period unless further premium payments are made." Those two documents are the ones worth reading; the risk is almost always visible in them before it becomes a lapse.
One thing about how universal life is sold belongs here, because it changes how a buyer should read the paperwork. The product is presented through an illustration whose persuasive content is precisely the part the contract does not promise, and NAIC's response has been to legislate against the illustration rather than against the product: Model 585's disclosure section routes universal life illustrations to the Life Insurance Illustrations Model Regulation, and the indexed version carries a further guideline of its own. That is a statement about how the category reaches buyers, not about any particular sale.