"Benefit decrease" refers to a situation where the advantages, assistance, or rewards that someone receives are reduced or made smaller. Full definition
Whereas, with mortgage life insurance, the premiums may remain the same each year, but the value of the policy death benefit decreases over time as the balance of your mortgage declines. (term-life-online.com)
The insurer, in turn, is able to keep premiums level as the difference between the cash value and death benefit decreases over time, reducing their liability. (valuepenguin.com)
The death benefit decreases as the balance owed on the home decreases. (lifeinsurancehub.org)