If, upon the death of the policy holder, the beneficiary is going to benefit from a life insurance policy (some investment products such as unit linked funds are based on life insurance policies) he or she will have to pay inheritance tax on that amount, assuming that it is going to be paid in Spain, or has been contracted in Spain with an insurance company that is authorised to operate in Spain.
You must write in this window, only the amount that corresponds to the beneficiary for whom the calculation is being made.