You can buy popular term lengths like 10 and 20 years from most life insurance providers. But 40-year term plans are only offered by Protective Life Insurance and Legal & General (also known as Banner Life).
A 40-year term life insurance policy is the longest term life insurance option available. This extended term length caters to specific financial planning needs but may only be suitable for some. It is suitable if you have long-term commitments — a 40-year term provides extended security. Other term lengths may be more appropriate for if you have shorter-term financial goals or are nearing retirement.