This chapter shall not apply to fraternal benefit societies or fraternal fire insurance associations, as described in Title 48 RCW; nor to beneficiary corporations or societies organized under and existing by virtue of Title 24 RCW, if such beneficiary corporations or societies provide in their bylaws for the payment of death benefits. Exemption is limited, however, to gross income from premiums, fees, assessments, dues or other charges directly attributable to the insurance or death benefits provided by such societies, associations, or corporations.