The length of coverage you need depends on several things, but the most basic consideration is how long you expect your beneficiaries to be dependent upon your income. If your spouse is your beneficiary, you should consider being covered until you plan to retire. If it‘s your children, you‘ll probably want to protect them until they‘re 18 or finish college. To cover a mortgage, choose a policy that will be in place for at least the length of the loan. Depending on your age, you can purchase policies guaranteed for 10, 15, 20, or even 30 years.