How to modify child custody and parenting time in Iowa

Sources last checked 8 November 2026. Information only, not legal advice. This page rests on the text of Iowa Code section 598.41 (custody of children) and subsections 3 and 4 of section 598.21C, and sections 598B.202 and 598B.203 (which decide which court may modify), as published by the Iowa Legislature at legis.iowa.gov. The test for changing a custody order is not in any section we read, so it comes from two Iowa Supreme Court decisions, In re Marriage of Harris, read on CourtListener, and one earlier decision that applies it, In re Marriage of Hoffman (Iowa 2015). Read what we could not confirm below.

Iowa divorce kit Child custody in Iowa Modifying child support and spousal support in Iowa After your divorce: changing a support or custody order

The short version

Iowa’s statutes route a custody modification through two places. Section 598.21C(3) says modifications of orders pertaining to child custody “shall be made pursuant to chapter 598B”, and that a petition asking for joint custody, or to change joint custody to sole custody, is decided under section 598.41. Section 598.41(9) adds that all custody orders are subject to chapter 598B. We read two sections of chapter 598B, which decide which court may modify. The test itself comes from case law, which we read in two decisions (see the next section). For changing child support or spousal support instead, see modifying child support and spousal support in Iowa.

What section 598.41 says about custody decisions

Joint custody, 598.41(1). The court may provide for joint custody and, as far as reasonable and in the child’s best interest, orders the custody award that assures “maximum continuing physical and emotional contact with both parents”, unless direct physical harm or significant emotional harm is likely to result.
Domestic abuse. If the court finds a history of domestic abuse, there is a rebuttable presumption against joint custody. A parent who relocates or is absent because of actual or threatened abuse is not to have that counted against them.
Denial of contact. The court treats one parent’s denial of the child’s contact with the other parent, without just cause, as “a significant factor” in deciding the custody arrangement.
On application, 598.41(2). On either parent’s application the court shall consider joint custody even if the parents do not agree. If it refuses, it must cite clear and convincing evidence that joint custody is unreasonable and not in the child’s best interest.
The factors, 598.41(3). The court considers: (a) whether each parent would be a suitable custodian; (b) whether the child’s psychological and emotional needs will suffer from lack of contact with both parents; (c) whether the parents can communicate about the child’s needs; (d) whether both parents have actively cared for the child before and since the separation; (e) whether each parent can support the other’s relationship with the child; (f) whether the arrangement accords with the child’s wishes, considering age and maturity; (g) whether the parents agree or are opposed to joint custody; (h) the geographic proximity of the parents; (i) whether safety will be jeopardized; (j) whether a history of domestic abuse exists; and (k) whether a parent let a registered sex offender have custody or unsupervised access. These apply in the joint custody context, and subsection 4 says they do not apply when the parents agree to joint custody.
Joint physical care, 598.41(5). If joint legal custody is awarded, the court may award joint physical care on either parent’s request, and may require a proposed parenting plan first.
Siblings, 598.41(6). If the children are split between the parents, the court shall include a provision allowing visitation between the children if reasonable and in their best interest.

When a modification petition is filed

Mediation, 598.41(8). If a petition to modify is based on differences between the parents about the custody arrangement, the court may require the parents to try mediation, unless domestic abuse is found or direct physical or significant emotional harm is likely.
Temporary orders, 598.21C(4). While an application to modify a child custody order is pending, the court may enter a temporary order modifying child support. The text we read does not mention temporary custody orders.
Which chapter governs, 598.41(9) and 598.21C(3). Custody orders are subject to chapter 598B, Iowa’s version of the Uniform Child Custody Jurisdiction and Enforcement Act, which decides which state’s court may modify.

Which court can modify: chapter 598B

Iowa keeps the case, 598B.202. An Iowa court that made a custody determination has “exclusive, continuing jurisdiction” until an Iowa court finds the child and parent no longer have a significant connection with Iowa and that substantial evidence is no longer available here, or until a court finds that the child, the parents and any person acting as a parent no longer live in Iowa.
After that, 598B.202(2). An Iowa court without exclusive, continuing jurisdiction may modify only if it has jurisdiction to make an initial determination under section 598B.201.
An order from another state, 598B.203. An Iowa court shall not modify another state’s custody determination unless it has initial-determination jurisdiction under 598B.201 and either the other state’s court determines it no longer has exclusive, continuing jurisdiction (or that Iowa is a more convenient forum), or a court determines that the child, the parents and any person acting as a parent no longer live in the other state.
What this means in practice. Where the child and parents live decides which court you file in. If an order came from another state or one parent has moved, confirm which state’s court has authority before filing, because the statute limits which court may modify. The exceptions in section 598B.204 (temporary emergency jurisdiction) were not read.

The test for changing custody: two Iowa decisions

The statutes do not state it. In In re Marriage of Harris, 877 N.W.2d 434 (Iowa 2016), the court, citing earlier Iowa decisions, said the parent asking to change custody must show a substantial change in circumstances after the decree, and also must prove a “superior ability to minister to the needs of the children”. The court said the change “must not have been contemplated by the court when the decree was entered”, and must be “more or less permanent, not temporary”.

Heavy burden. The court described the parent seeking modification as facing a “heavy burden”, because once custody is fixed it should be disturbed “only for the most cogent reasons”.
Not a rematch. Because the change must be new, permanent and not already considered, a disagreement over how the original order was decided is not enough.
Same test in Hoffman (2015). In In re Marriage of Hoffman, 867 N.W.2d 26 (Iowa 2015), the Iowa Supreme Court quoted the same test from In re Marriage of Frederici, 338 N.W.2d 156 (Iowa 1983): the parent seeking a change must show conditions “so materially and substantially changed” since the decree that the children’s best interests require it, and must prove “an ability to minister more effectively” to the children. The court called this a “heavy burden”. It held a father had not met it after the mother, who had physical care, moved about seventy miles. The court said the children’s best interest is the “controlling consideration”. It also said a teenager’s preference counts for less in a modification case than in an original custody case.
Limits of what we read. We read two opinions, through CourtListener. We did not read the earlier decisions they cite (Frederici itself, Jacobo and Weidner), anything decided after 2016, or how Iowa courts treat joint custody or shared care arrangements today.

What we could not confirm

The modification test, beyond Harris and Hoffman. The statutes we read do not state when a court may change a custody order. We rely on two Iowa Supreme Court decisions (2015 and 2016) for the test and did not read later cases. Section 598.21C(1) uses “a substantial change in circumstances” only for support orders.
Rest of chapter 598B. We read only sections 598B.202 and 598B.203. We did not read 598B.201 (initial jurisdiction), 598B.204 (emergencies), 598B.207 (convenient forum), or any notice rules.
Relocation. We did not read an Iowa relocation provision.
Forms, fees and courts. We did not read Iowa Judicial Branch forms or local rules. The Judicial Branch site (iowacourts.gov) restricts automated readers, so we did not use it.
Statute currency. We read the 2026 Iowa Code PDFs for sections 598.41, 598.21C, 598B.202 and 598B.203, dated 12 December 2025 on the legislature’s site. We did not check later session laws.

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