To fill out and submit a UIDDA foreign subpoena form, you take the subpoena already issued in the state where your lawsuit is pending, complete the discovery state’s local form so every detail mirrors that original, and file both with the clerk of court in the county where the witness or documents are located. The clerk — not a judge — reviews the paperwork and issues a local subpoena that is enforceable in that state. From there, you serve the witness under the discovery state’s rules.
The steps below walk through what to gather, how to complete the form correctly, and what happens after the clerk stamps it.
Gather Your Trial-State Materials First
Everything on the local form comes from the subpoena already issued in your trial-state case. Before you touch a form, pull the following from your file:
- The original foreign subpoena issued under the trial-state court’s authority. Have at least two certified copies ready; some clerks want the original plus copies.
- The full case caption: the exact name of the trial-state court, the case number, and the names of all parties.
- Contact information for all counsel of record and any self-represented party in the trial-state case.
- The witness’s full legal name and current address. If you’re seeking documents, a specific list of what you want produced, usually attached as a schedule or exhibit.
Accuracy is not optional. The clerk compares your local form against the original foreign subpoena, and a wrong case number, misspelled party name, or mismatched address gives the clerk grounds to reject the filing. Discrepancies also give the witness a basis to move to quash later.
Find the Right Form in the Discovery State
Identify the county where the witness lives, works, or where the documents are kept. That county’s clerk of court controls the process.
Most jurisdictions offer a dedicated foreign subpoena form or an application form built for UIDDA requests. California, for example, uses a formal application that asks the court to issue a local subpoena based on your out-of-state case. Other states provide a simpler subpoena template you fill in with your trial-state case details.
Check the clerk’s website first. Look for something labeled “Application for Issuance of a Foreign Subpoena” or similar. If nothing is posted, call the office. Not every court has digitized its forms, and templates get updated, so confirm you have the current version before you start.
Fill in the Form to Mirror the Original Subpoena
The discovery-state form is essentially a local translation of your trial-state subpoena. Transfer the case caption, party names, attorney contact information, and the substance of what you’re requesting — testimony, documents, or both — into the fields on the local form. If your original subpoena includes a schedule listing specific records like medical files, bank statements, or emails from a particular date range, reproduce that schedule identically on the local form or as an attachment.
Most forms include a section asking for the legal authority behind the request. That’s where you reference the UIDDA and the discovery state’s version of it.
The form will also ask for the date, time, and location of the deposition or document production. Set these realistically. The subpoena must give the witness a reasonable time to comply. What counts as reasonable varies by state; some require as little as 24 to 48 hours for testimony, while others mandate five to fifteen days, particularly for document production. Less than a week’s notice for a deposition or less than two weeks for records is asking for a motion to quash. When in doubt, build in more time than you think you need.
Before you move on, read the completed form side by side with the original foreign subpoena. Every field should match. The finished local form should read as a mirror image of the trial-state subpoena, adapted only to the discovery state’s format.
Submit to the Clerk of Court
Take the completed local form and the original foreign subpoena to the clerk of court in the discovery-state county. Depending on the jurisdiction, you can file in person, by mail, or through the court’s electronic filing system. Some clerks accept all three; others restrict UIDDA filings to mail or in-person visits. Confirm the method before you go.
The clerk reviews the two documents together, verifying that the local form matches the foreign subpoena. If everything checks out, the clerk signs and stamps the local subpoena. That signature is what domesticates the order. It turns your out-of-state request into a binding subpoena enforceable in the discovery state, and no judge reviews it.
Expect a filing or issuance fee. Amounts vary widely — some courts charge as little as $5, others $50 or more, and a few charge nothing for UIDDA subpoenas. Ask the clerk’s office about the fee and accepted payment methods in advance. Missing or incorrect fees are one of the most common reasons clerks refuse to issue the subpoena.
Submitting a foreign subpoena to the clerk does not count as making an appearance in that state’s courts, and you don’t need to file a separate lawsuit there. The UIDDA was built to avoid that.
Serve the Issued Subpoena on the Witness
A signed subpoena sitting in a filing cabinet does nothing. The witness has no legal obligation until formally served, and service must follow the discovery state’s rules of civil procedure. That usually means hand-delivery by a professional process server or the local sheriff’s office. Mailing the subpoena is not sufficient in most states.
After service, the server completes a return of service or affidavit of service documenting when, where, and how the witness received the document. File that proof of service with the discovery-state court. Without it, you have no way to enforce compliance if the witness ignores the subpoena.
Witness Fees and Mileage
In many jurisdictions, a subpoena is not valid unless you tender the witness fee and travel expenses at the time of service. Skip this step and the witness has a legitimate basis to refuse to appear.
For federal proceedings, the attendance fee is $40 per day, and the witness is also entitled to mileage reimbursement for travel by private vehicle.1Office of the Law Revision Counsel. United States Code Title 28 Section 1821 The federal mileage allowance follows the rate set by the General Services Administration, which tracks the IRS standard mileage rate — 72.5 cents per mile in 2026.2IRS. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile
State courts set their own witness fees, and they tend to be lower. Daily attendance fees at the state level commonly fall between $5 and $40 depending on the jurisdiction. Check the discovery state’s witness compensation statute before you serve, and include the correct amount.
If You Are Subpoenaing an Organization
When the target is a company, government agency, or other organization rather than a named person, you don’t identify a specific employee. Your subpoena describes the topics you want covered, and the organization picks its own representative to testify. Federal practice governs this through Rule 30(b)(6) of the Federal Rules of Civil Procedure, and most states follow a similar approach.
Your description of examination topics needs to be specific enough for the organization to prepare. Vague language like “all matters related to the contract” invites a motion to quash. Concrete language holds up better, for example, “the organization’s procedures for approving invoices over $50,000 between January and June 2024.” Once the organization receives the subpoena, both sides are expected to confer in good faith about the scope of testimony before the deposition.
If the Witness Objects or Refuses to Comply
Any dispute about the subpoena — a motion to quash, a request for a protective order, or an effort to modify the scope — gets resolved in the discovery state, not the trial state. The discovery-state court applies its own procedural rules and its own law on privilege. You may need local counsel to handle these motions, even though the UIDDA let you skip local counsel for issuance itself.
Common grounds for quashing a UIDDA subpoena include overbroad document requests, insufficient compliance time, undue burden on the witness, and privilege objections. Mismatches between the foreign subpoena and the local form also give the witness ammunition, which is why the mirror-image step matters so much.
If the witness simply ignores a properly served subpoena, the discovery-state court has contempt power to compel compliance. Sanctions can include fines and, in extreme cases, short-term incarceration.
Two States Where the UIDDA Process Does Not Apply
As of late 2025, Massachusetts and Missouri have not enacted the UIDDA. If your witness is located in either state, the clerk-issuance process described here does not apply. You’ll need to obtain a letter rogatory or commission from the trial-state court and file it in a new proceeding in the witness state, typically through counsel admitted to practice there. That older process is slower, more expensive, and requires judicial involvement at both ends. Confirm the current status of the UIDDA in any state where you plan to seek discovery, because legislatures occasionally adopt or amend the act between sessions.