Moving a Case to Federal Court: Rules, Deadlines, and Notice of Removal

Removing a case to federal court is something a defendant does by filing a Notice of Removal with the federal district court covering the location of the state court, usually within 30 days of being served. The move only works if the federal court would have had jurisdiction over the case in the first place, and the rules in Title 28 of the United States Code govern almost every step. A missed deadline, a missing co-defendant’s consent, or a sloppy jurisdictional statement can send the case straight back to state court, sometimes with the plaintiff’s attorney fees attached.

When the Case Qualifies

A defendant can remove a civil action only if the federal district court would have had original jurisdiction over it, meaning the plaintiff could have filed there to begin with.¹ Two categories cover most removals: federal question jurisdiction and diversity jurisdiction.

Federal Question

Federal district courts have jurisdiction over any civil case arising under the Constitution, a federal statute, or a treaty.² The federal issue has to appear in the plaintiff’s own complaint, not in a defense the defendant plans to raise. If the complaint on its face raises only state-law theories, the federal question door is closed no matter what defenses exist.

Diversity of Citizenship

When no federal law is at stake, a defendant can still remove if the parties are citizens of different states and the amount at issue exceeds $75,000, not counting interest and costs.³ Both requirements must be met.

Diversity has to be complete. Every plaintiff must be a citizen of a different state from every defendant. An individual’s citizenship is determined by domicile, the state where they live and intend to stay. A corporation counts as a citizen of both its state of incorporation and the state where it has its principal place of business, which means a corporate defendant can destroy diversity on two fronts.

The $75,000 threshold is straightforward when the plaintiff demands a specific dollar amount. For injunctions or declaratory relief, the court estimates the monetary value of the remedy and generally defers to the plaintiff’s own valuation unless the defendant can show to a legal certainty that the claim falls short. The amount is measured at the time the case begins.

Limits Even When Jurisdiction Exists

Qualifying for federal jurisdiction is not the same as being allowed to remove. Two separate rules can block an otherwise eligible case.

The first is the forum defendant rule. On diversity grounds alone, a case cannot be removed if any properly joined and served defendant is a citizen of the state where the lawsuit was filed.¹ The logic: diversity jurisdiction exists to protect out-of-state defendants from potential home-court bias, and that concern disappears when the defendant is already home. This rule does not apply to federal question removals.

The second is unanimity. When multiple defendants have been named and served, every one of them must either join the Notice of Removal or formally consent to it.⁴ One reluctant co-defendant can block the whole removal. Defendants who have not yet been served are excluded from the count. If the case mixes federal-law claims with claims outside federal jurisdiction, only the defendants named in the federal claim need to join; the federal court can then send the non-federal claims back.¹

A separate issue sometimes arises when a plaintiff appears to have added a non-diverse defendant specifically to defeat removal. If there is no plausible legal theory connecting that party to the dispute, the removing defendant can argue “fraudulent joinder” and ask the federal court to disregard that defendant’s citizenship. The burden is on the removing defendant to show the joinder lacks any factual or legal foundation.

The Deadlines

Removal deadlines are rigid, and courts enforce them without sympathy. The core rule gives a defendant 30 days to file the Notice of Removal.⁴ The clock starts when the defendant receives a copy of the initial complaint, or when the defendant is served with the summons, whichever period is shorter. The “shorter” language catches defendants who assume they get the later of the two dates.

A case that is not removable when it is filed can become removable later. If an amended complaint, a motion, a court order, or any other filing reveals for the first time that the case qualifies for federal jurisdiction, a fresh 30-day window opens from the date the defendant receives that document.⁴ A common trigger: the plaintiff voluntarily dismisses the only non-diverse defendant, suddenly creating complete diversity where none existed before.

For diversity-based removals there is also an outer limit. The case cannot be removed more than one year after it was first filed in state court.⁴ The one exception is bad faith by the plaintiff. If the court finds the plaintiff deliberately manipulated the case to prevent removal, such as keeping a sham defendant in just long enough to run out the clock, late removal can be allowed. The one-year cap does not apply to cases removed on federal question grounds.

Filing the Notice of Removal

The removal process begins with a document called the Notice of Removal. It must include a brief, clear explanation of why the federal court has jurisdiction.⁴ An attorney must sign it, certifying that the jurisdictional arguments are supported by law and fact.

For diversity-based removals, the Notice has to spell out every party’s citizenship in enough detail that the court can independently confirm complete diversity. It also has to address why the amount in controversy exceeds $75,000, especially when the complaint does not demand a specific dollar figure. The defendant must attach copies of every pleading, court order, and process document served in the state court action.⁴

This is where many removals fall apart. A Notice that leaves citizenship vague, fails to address the amount in controversy, or omits state court documents hands the plaintiff an easy remand motion. Courts evaluate removal strictly, and doubts are typically resolved against federal jurisdiction.

The completed Notice and attachments go to the clerk of the federal district court for the geographic area where the state case is pending.¹ Filing in the wrong district is a procedural defect that can undo the removal.

The removing defendant pays a $350 statutory filing fee.⁵ The Judicial Conference of the United States may prescribe additional administrative fees on top of that amount, so the total out-of-pocket cost can be higher.

Two more steps have to happen promptly after the federal filing. First, file a copy of the Notice with the state court clerk. That filing is what legally transfers the case; once the state court receives it, that court loses all authority over the matter unless the case is later sent back.⁴ Second, give written notice of the removal to every other party. Missing either step exposes the removal to a procedural challenge.

What Happens Once the Case Is in Federal Court

The case proceeds under the Federal Rules of Civil Procedure. Any orders the state court entered before removal generally remain in effect; the federal court inherits the case as it stands.

A defendant who has not yet responded to the complaint faces a new deadline. The answer or Rule 12 motion is due within the longest of three periods: 21 days after receiving the initial complaint, 21 days after being served with the summons, or 7 days after the Notice of Removal is filed.⁶ Pleadings already filed in state court do not need to be re-filed unless the federal court specifically orders it.

If the Plaintiff Fights Back

A plaintiff who thinks the removal was improper can file a motion to remand. The deadline depends on what kind of defect is being raised.

For procedural problems, including a late filing, a missing defendant’s consent, or missing state court documents, the plaintiff has 30 days from the Notice of Removal. Miss that window and the procedural defect is waived. For a jurisdictional defect, meaning the federal court simply lacks subject matter jurisdiction, there is no deadline. The court can remand on its own at any point before final judgment, even if no party raises the issue.⁷

When a court grants a remand, it can order the removing defendant to pay the plaintiff’s costs and attorney fees caused by the removal.⁷ Fees are not awarded in every case, but a removal with a thin jurisdictional argument is a good way to end up writing that check. Weigh that honestly before filing.

And a remand order is generally not appealable. Once the federal judge sends the case back, the decision is final.⁷ Narrow exceptions exist for cases removed under the federal officer removal statute or certain civil rights statutes, but for the typical diversity or federal question case, there is no second bite.

Class Actions Under CAFA

Large class actions follow different rules. Under the Class Action Fairness Act, a class action with at least 100 members can be removed if the total amount in controversy across all class members exceeds $5 million and at least one plaintiff is a citizen of a different state from at least one defendant.⁸ That “minimal diversity” standard is far easier to meet than the complete diversity needed for ordinary cases.

CAFA also strips away several barriers that normally apply. Any single defendant can remove without the others’ consent. The forum defendant rule does not apply, so a home-state defendant can remove freely. The one-year deadline for diversity-based removal does not apply either.⁸ For defendants facing a large class action in a plaintiff-friendly state court, CAFA removal is often the first option on the table.

1
Office of the Law Revision Counsel. 28 USC 1441 – Removal of Civil Actions
2
Office of the Law Revision Counsel. 28 USC 1331 – Federal Question
3
Office of the Law Revision Counsel. 28 USC 1332 – Diversity of Citizenship; Amount in Controversy; Costs
4
Office of the Law Revision Counsel. 28 USC 1446 – Procedure for Removal of Civil Actions
5
Office of the Law Revision Counsel. 28 USC 1914 – District Court; Filing and Miscellaneous Fees
6
Legal Information Institute. Federal Rules of Civil Procedure Rule 81 – Applicability of the Rules in General; Removed Actions
7
Office of the Law Revision Counsel. 28 USC 1447 – Procedure After Removal Generally
8
Office of the Law Revision Counsel. 28 USC 1453 – Removal of Class Actions