Interlocutory Appeals in Missouri: When You Don't Have to Wait for a Final Judgment

There are narrow exceptions, and that is what an interlocutory appeal is: a limited, immediate appeal of certain orders before the case as a whole is over. Missouri allows these only in specific situations, mostly where a statute says a particular kind of order can be appealed right away, or where a trial court takes a formal step to make a partial ruling final. Because the exceptions are technical and limited, most parties who are unhappy with a mid-case ruling have to live with it until the end, then raise it in a regular appeal. The information below explains the default rule, the main exceptions, and the practical alternatives, but the rules here are detailed and easy to misapply, so confirm your specific situation with a Missouri attorney.

The final judgment rule (the default)

The starting point is that the right to appeal in Missouri is statutory, and the main statute, RSMo § 512.020, generally allows an appeal from a final judgment. A judgment is usually considered final for appeal purposes only when it resolves all claims among all the parties and leaves nothing for the trial court to do but enforce what it decided. If claims remain pending, or if the court has not actually entered a judgment, an attempted appeal is typically premature, and the appellate court may dismiss it for lack of a final, appealable judgment.

This rule exists to keep cases from being chopped into pieces, with separate appeals taken at every step. Without it, a single lawsuit could generate multiple trips to the appellate court before trial even finishes, which would slow everything down and waste resources. So the default expectation is patience: an unfavorable interlocutory ruling is generally preserved and argued later, as part of one appeal taken after the whole case ends.

Statutory interlocutory appeals (RSMo § 512.020)

Missouri's appeal statute, RSMo § 512.020, does more than authorize appeals from final judgments. It also lists certain interlocutory orders that the legislature has chosen to make immediately appealable, even though the case is not over. The idea is that some mid-case orders are important or final enough in their practical effect that waiting until the end of the case would not adequately protect the parties.

Examples that have historically appeared in this category include orders granting, refusing, dissolving, or refusing to dissolve an injunction, certain orders in receivership matters, such as appointing a receiver or ordering a sale, and certain interlocutory orders that determine specific rights in a case in a way the statute treats as appealable. Some orders in probate and related proceedings are also made appealable by statute. The common thread is that the legislature singled out particular categories, rather than allowing appeals from interlocutory orders generally.

This list is technical and limited, and the exact wording of the statute controls. An order that feels significant to a party is not automatically appealable just because it matters; it has to fit within a category the statute actually authorizes. Because the categories are specific and have been interpreted through case law, whether a given order qualifies is a question worth confirming with counsel before relying on it.

Certifying a partial judgment (Rule 74.01(b))

There is a second route to an early appeal that does not depend on the order fitting a statutory category. When a case involves multiple claims or multiple parties, Missouri Supreme Court Rule 74.01(b) allows the trial court to enter a final judgment on fewer than all of the claims or parties, but only if the court makes an express determination that there is no just reason for delay.

This certification is significant. If the trial court properly resolves a distinct claim and then certifies under Rule 74.01(b) that there is no just reason for delay, that partial judgment can become final and appealable even though other parts of the case continue. Without that certification, a ruling on some but not all of the claims usually is not final, and an appeal from it would generally be premature.

The certification is not automatic, and it is not a formality. The trial court has discretion, and appellate courts review whether the certified portion was genuinely a separate, fully resolved claim rather than an intertwined piece of an ongoing dispute. A label alone does not guarantee the appellate court will treat the judgment as final. This is another area where the analysis is fact-specific and benefits from careful review.

Extraordinary writs as the alternative

When no statutory interlocutory appeal is available and no partial judgment has been certified, the main alternative for challenging a mid-case ruling right away is an extraordinary writ. The two most common are a writ of mandamus, which asks a higher court to order a lower court to do something it is required to do, and a writ of prohibition, which asks a higher court to stop a lower court from acting beyond its authority.

A writ proceeding is different from an appeal. Instead of appealing as of right, the party petitions the appellate court to exercise its discretion to intervene. The court can decline to take up the petition at all, and it grants these writs sparingly. They are generally reserved for situations where the trial court has clearly exceeded its authority or abused its discretion, and where waiting for an ordinary appeal would not be an adequate remedy.

Because writs are discretionary and granted only in limited circumstances, they are not a reliable substitute for an appeal in routine disagreements with a trial court's rulings. They are a tool for unusual cases, not a general escape hatch from the final judgment rule.

Why the rule exists and how strategy fits in

The final judgment rule reflects a deliberate policy choice: resolve the case first, then review it once, rather than allowing piecemeal appeals that interrupt the proceedings. That policy shapes strategy. Because most interlocutory rulings cannot be appealed immediately, the practical work happens at the trial level, where a party makes its record, objects when appropriate, and preserves issues so they can be raised later if the case is appealed after final judgment.

When an early ruling really does seem to fit a statutory exception, or when a discrete claim has been fully decided, the question becomes whether to pursue an immediate appeal or a Rule 74.01(b) certification. These are judgment calls with deadline consequences, and choosing the wrong path can mean either losing the chance to be heard early or filing an appeal that gets dismissed as premature. That is part of why this area tends to involve careful, case-specific analysis rather than general rules of thumb.

Deadlines

Appellate deadlines in Missouri are strict, and missing one can forfeit the right to appeal entirely. The timing for filing a notice of appeal is short and is tied to when the judgment becomes final, which can be affected by post-trial motions. For interlocutory appeals and writ petitions, the timing rules differ from ordinary appeals and can be unforgiving.

Because the specific number of days, the event that starts the clock, and the effect of any post-judgment motions all depend on the rules and the facts of a given case, this explainer does not state a particular deadline for your situation. Treat appellate timing as urgent and confirm the exact deadline with a Missouri attorney as early as possible. Waiting to ask can be the difference between preserving an appeal and losing it.

When to hire an appellate lawyer

Appellate practice is its own specialty, and the threshold questions in this area, such as whether an order is appealable at all, whether to seek certification of a partial judgment, or whether to pursue a writ, are exactly the kind of issues where early advice matters. If you are considering challenging a ruling before the case is over, or you are facing a short deadline after a judgment, it is worth consulting a Missouri attorney who handles appeals. A lawyer can assess whether an immediate appeal is even available, identify the controlling deadline, and help you preserve issues at the trial level so they remain available later. This is general guidance and not a recommendation of any particular firm.