Any cash surrender value available not later than the 30th day after the date of a policy anniversary under a policy paid up by completion of all premium payments or a policy continued under any paid-up nonforfeiture benefit, regardless of whether required by Section 1105.004, must be an amount not less than the present value, on the policy anniversary, of the future guaranteed benefits available under the policy, including any existing paid-up additions, less any indebtedness to the company on the policy.