Except where the context requires otherwise, this chapter is applicable to all laws of this state imposing taxes upon or measured by net income. [1957 c.632 §2; 1961 c.176 §3; 1965 c.152 §25; 1971 c.215 §9; 1977 c.870 §40; 1987 c.293 §51; 1989 c.625 §26; 1995 c.79 §153; 1995 c.556 §21]