How to Serve Someone Court Papers the Right Way

To serve someone court papers, you arrange for a qualified adult who is not you to deliver the summons and complaint to the defendant, use an approved substitute method if direct delivery isn’t possible, and then file a sworn proof of service with the court before your deadline runs out. The rules come from Federal Rule of Civil Procedure 4 in federal cases and from each state’s own procedural code in state court, and the details differ enough that you need to check the specific court where you filed.¹

Who Is Allowed to Serve the Papers

You cannot serve the papers yourself. Federal rules require the server to be at least 18 years old and not a party to the case.¹ You have three practical options:

The local sheriff’s office or, in federal court, a U.S. Marshal appointed by the court.
A professional process server. Standard delivery fees generally run between $20 and $100 depending on location and how hard the person is to find.
Any adult who is 18 or older and has no stake in the case. This is the cheapest route, but the person needs to understand the rules and be willing to sign a sworn affidavit afterward.

How to Deliver the Papers to an Individual

Personal Service

The cleanest method is handing the documents directly to the defendant. This can happen at their home, their workplace, or almost anywhere else you find them.¹ Some states restrict the days or hours when service can occur, and a few prohibit Sunday service, so check your local rules before sending someone out.

Substituted Service

If you cannot physically hand the papers to the defendant, federal rules let you leave copies at their home with someone of suitable age and discretion who lives there.¹ That means a responsible adult in the household, not a young child, and the person receiving the papers should be told what they are.

Federal rules do not require a follow-up mailing after substituted service, but many state courts do. If you are in state court, confirm whether your jurisdiction requires that mailing. Skipping it where it is required can void the service.

Service on an Authorized Agent

You can also deliver the papers to a person the defendant has formally authorized to accept service on their behalf.

Service by Mail

Federal Rule 4 does not list certified or registered mail as a standard method for serving individuals inside the United States.¹ But federal courts can use whatever methods the state where they sit allows, and many states do permit some form of mail service. The specifics vary: some states require certified mail with a signed return receipt; others use first-class mail with an acknowledgment form the defendant must sign and return within a set window, often 20 days. If the defendant never returns the acknowledgment, you generally have to fall back to personal service.

The Waiver Shortcut

Federal courts offer a shortcut worth trying before you spend money on a process server. You can mail the defendant a written request to waive formal service, and the request must give them at least 30 days to return the signed waiver, or 60 days if they are outside the United States.¹

A defendant who returns the waiver gets 60 days from the date the request was sent to file a response, instead of the 21 days that would follow formal service.² Waiving service does not waive any legal defenses; the defendant only gives up the formality of being personally served.

Refusing has a cost. If a defendant located in the United States declines to return the waiver without good cause, the court must order that defendant to pay the expenses the plaintiff later incurred to complete formal service, including attorney’s fees for any motion needed to collect those costs.¹

Serving a Business or Government Entity

Suing a business is not the same as suing a person. In federal court, you can serve a corporation or unincorporated association by delivering the summons and complaint to an officer, a managing or general agent, or any other agent authorized to accept service.¹ You can also use the service methods of the state where the federal court sits. Most states require corporations to designate a registered agent, and that agent’s name and address are usually available through the secretary of state’s office.

Serving the United States government requires more steps. You must deliver copies to the U.S. Attorney for the district where you filed (or send them by certified or registered mail to the civil-process clerk at that office), and send copies by registered or certified mail to the Attorney General in Washington, D.C. If the case challenges a specific federal agency or officer, you must also send copies there.¹ Courts must give you reasonable time to fix an error if you got at least part of it right.

To serve a state, city, or county government, you deliver copies to its chief executive officer or follow whatever method that state’s own law prescribes for serving government defendants.¹

When You Cannot Find the Defendant

Some defendants dodge the process server, and some simply cannot be located. Before a court will let you try anything creative, you have to show due diligence: genuine, repeated attempts using standard methods. That means trying at different times of day, checking all known home and work addresses, and keeping detailed records of every attempt. A halfhearted effort will not be enough.

Once conventional methods have clearly failed, you can ask the court for permission to use an alternative. The traditional fallback is service by publication, where the court authorizes you to run a legal notice in a newspaper. Publication costs vary widely depending on the paper and how many times the notice must run. Some courts have begun allowing service by email or social media when a plaintiff can show the defendant is likely to receive notice that way. Any alternative method requires a court order first. You cannot decide on your own to skip standard service.

The Deadline to Get Service Done

In federal court, you have 90 days after filing the complaint to complete service. Miss that window and the court can dismiss the case without prejudice, meaning you can refile but lose time, may owe a new filing fee, and could run into statute-of-limitations problems if the clock has kept running.¹ If you can show good cause for the delay, the court must grant an extension, but “I forgot” or “the process server was busy” rarely qualifies. State-court deadlines range from 30 to 120 days depending on the jurisdiction, so check your local rules as soon as you file.

Filing Proof of Service

After delivery, the server must prepare a proof of service, sometimes called an affidavit of service or return of service. Federal rules require this proof to be made by the server’s affidavit unless a U.S. Marshal handled the delivery.¹ It is a sworn statement, and lying on it carries real consequences.

The form should include the full name of the person served, the date and time of delivery, the physical location where service occurred, a description of the documents delivered, and the method used. The server signs under oath, and many jurisdictions require notarization. Blank forms are available from the court clerk’s office or the court’s website.

Once complete, you are responsible for filing the proof with the court clerk, either in person, by mail, or through the court’s electronic filing system if one exists. Until this proof is on file, the court has no official record that the defendant knows about the case, and proceedings will not move forward. If you made a minor error on the form, federal rules allow you to amend the proof of service; a paperwork mistake does not automatically invalidate service that was otherwise properly completed.¹

What Happens If You Get Service Wrong

Improper service gives the defendant grounds to ask the court to throw out the case. Under federal rules, a defendant can file a motion to dismiss for insufficient process (problems with the documents themselves) or insufficient service of process (problems with how they were delivered).² Experienced defense attorneys look for service defects as a matter of routine.

A dismissal for bad service is usually without prejudice, so you can fix the problem and try again. That second attempt eats into your 90-day window and, depending on timing, could push you past the statute of limitations on your underlying claim. And a default judgment entered against a defendant who was never properly notified can be challenged and overturned, sometimes years later, unwinding everything that happened in between. Getting service right the first time is the foundation the rest of the case sits on.

1
Legal Information Institute. Federal Rules of Civil Procedure Rule 4 – Summons
2
Legal Information Institute. Federal Rules of Civil Procedure Rule 12 – Defenses and Objections