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Iowa Code

Iowa Code § 4.5 (2026)

Prospective statutes

✓ current as of July 2026
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A statute is presumed to be prospective in its operation unless expressly made retrospective. [C73, 75, 77, 79, 81, §4.5]

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Notes of Decisions
Cited in 66 cases (6 in the last 5 years), 1982–2024 · leading case: State v. Truesdell, 679 N.W.2d 611 (Iowa 2004).
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State v. Truesdell, 679 N.W.2d 611 (Iowa 2004). · cites it 2× “See Iowa Code § 4.5 ; Frideres v. Schiltz, 540 N.”
Pamela Plowman & Jeremy Plowman v. Fort Madison Cmty. Hosp., Pil Kang, John Paiva, Davis Radiology, P.C., Leah Steffensmeier, the Women's Ctr., & Fort Madison Physicians & Surgeons, 896 N.W.2d 393 (Iowa 2017). · cites it 2× “See Iowa Code § 4.5 (“A statute is presumed to be prospective in its operation unless expressly made retrospective.”
State v. Lyle, 854 N.W.2d 378 (Iowa 2014). “See Iowa Code § 4.5 (2013) ("A statute is presumed to be prospective in its operation unless expressly made retrospective.”
Baldwin v. City of Waterloo, 372 N.W.2d 486 (Iowa 1985). · cites it 2× “Iowa Code § 4.5 . Statutes which specifically affect substantive rights are construed to operate prospectively unless legislative intent to the contrary clearly appears from the express language or by necessary and unavoidable implication.”
Vinson v. Linn-Mar Cmty. Sch. Dist., 360 N.W.2d 108 (Iowa 1984). “Iowa Code § 4.5 (1983). If the amendment is remedial only, however, it is applicable retrospectively.”
Adam v. State, 380 N.W.2d 716 (Iowa 1986). · cites it 2× “Iowa Code § 4.5 . In holding section 542.”
Hannan v. State, 732 N.W.2d 45 (Iowa 2007). “See Iowa Code § 4.5 ; Schuler v. Rodberg, 516 N.”
Wallace v. Des Moines Indep. Cmty. Sch. Dist. Bd. of Directors, 754 N.W.2d 854 (Iowa 2008). “See Iowa Code § 4.5 (stating a “statute is presumed to be prospective in its operation unless expressly made retrospective”).”
State v. DeCamp, 622 N.W.2d 290 (Iowa 2001). “See Iowa Code § 4.5 (1999) (“statute is presumed to be prospective in its operation unless expressly made retrospective”); Tornquist, 600 N.”
Iowa Beta Chapter of Phi Delta Theta Fraternity v. State, Univ. of Iowa, 763 N.W.2d 250 (Iowa 2009). “2d 245, 249 (Iowa 2008); see also Iowa Code § 4.5 . However, when the statute relates solely to remedy or procedure, a court can apply the statute both prospectively and retrospectively.”
City of Waterloo v. Bainbridge, 749 N.W.2d 245 (Iowa 2008). “Accordingly, we find the legislature intended section 657A.10A(5) to override the lien created by section 445.”
Cunha v. City of Algona, 334 N.W.2d 591 (Iowa 1983). · cites it 2× “Iowa Code § 4.5 (1981). The county's argument based on section 613A.”
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