In family law, the applicable standard of review often tracks the type of issue being challenged, and understanding where each standard operates is critical to framing arguments effectively on appeal.

Correctness (de novo review) applies to pure legal questions. In family law, this most often arises in issues such as:

• Interpretation of statutes (e.g., alimony statutes, custody jurisdiction under the UCCJEA)

• Interpretation of divorce decrees or contracts (e.g., stipulations, settlement agreements)

• Constitutional or due process claims

  In these situations, the appellate court gives no deference to the trial court and decides the issue independently.

Clear error applies to factual findings, which are pervasive in family law. This includes:

• Findings about income (for child support or alimony)

• Credibility determinations between parties

• Findings regarding domestic violence, parental fitness, or cohabitation

• Valuation of assets when based on competing testimony

  Because family law cases are fact-intensive, this standard governs a large portion of appellate review and is highly deferential.

Substantial evidence review operates alongside clear error and focuses specifically on whether there is enough evidence in the record to support the trial court’s findings. In family law, this arises in:

• Whether income determinations are supported by the record

• Whether findings supporting custody or parent-time are grounded in evidence

• Whether property valuations have an evidentiary basis

  If some reasonable evidentiary support exists, the finding will typically be upheld.

Abuse of discretion governs the trial court’s ultimate decisions, especially where the court is balancing multiple factors. This is the dominant standard in family law for:

• Custody and parent-time determinations (best interest of the child)

• Alimony awards (amount and duration)

• Division of marital property (equitable—not necessarily equal—distribution)

• Decisions on attorney’s fees

• Procedural rulings, such as whether to allow amendments or impose sanctions

  Even if the appellate court might have decided differently, it will affirm unless the decision falls outside the bounds of reasonability.

Plain error appears less frequently but arises when an issue was not preserved at trial. In family law, this might occur where:

• A party failed to object to improper evidence

• A legal issue was not raised but is later claimed to be obvious and harmful

  The appellant must show an obvious error that affected substantial rights, which is a difficult standard to meet.

Mixed questions of law and fact are common in family law and involve a hybrid approach:

• Legal components → reviewed for correctness

• Factual components → reviewed for clear error

  For example, whether cohabitation legally justifies termination of alimony involves both factual findings (living arrangements) and legal conclusions (application of the statute).

In practice, most family law appeals rise or fall on clear error and abuse of discretion, because trial courts are given broad latitude in resolving factual disputes and crafting equitable outcomes. Strategically, framing an issue as a legal question subject to correctness review can significantly improve the chances of reversal.