In computing tax there may be deducted from the measure of tax by those engaged in banking, loan, security or other financial businesses, amounts derived from interest received on investments or loans primarily secured by first mortgages or trust deeds on nontransient residential properties.
[1980 c 37 § 12. Formerly RCW 82.04.430(11).]
NOTES:
Intent -- 1980 c 37: See note following RCW 82.04.4281.