In computing a taxpayer's Washington taxable income, the taxpayer may deduct from the taxpayer's Washington base income the amount deposited in a capital construction fund under section 7518 of the internal revenue code if the amount has reduced the taxpayer's federal taxable income for the taxable year.[ 2026 c 238 s 311.]Notes:Findings—Intent—Effect of invalidation of 2026 c 238 s 201—Automatic expiration date and tax preference performance statement exemption—Necessity of act—Intent—Implementation by department of revenue—2026 c 238: See notes following RCW 82A.04.030.