The Uniform Interstate Depositions and Discovery Act lets you compel a deposition, document production, or inspection from a witness in another state by taking a subpoena issued by your trial court to the clerk of court in the county where the witness or evidence sits. The clerk issues a local subpoena that carries the full force of the discovery state’s courts. No judge reviews it, no new case is filed, and no pro hac vice admission is required to make the request. Forty-seven states, the District of Columbia, and the U.S. Virgin Islands have enacted the act, so it is the default path for most cross-border discovery in state court litigation.
What the Act Covers and What It Doesn’t
The act applies only to civil proceedings in state court. If your case is in federal court, you subpoena out-of-state witnesses directly under Federal Rule of Civil Procedure 45, and the UIDDA has no role. Criminal matters also fall outside the act; cross-border criminal subpoenas run through separate interstate compacts.
Within state civil litigation, the act reaches the three standard uses of subpoena power: compelling a person to appear for a deposition, requiring production of documents and electronically stored information, and demanding access to inspect premises. If your home state’s subpoena could accomplish one of those things locally, the UIDDA gives you a way to accomplish it where the witness or evidence actually is.
Confirm Both States Have Adopted the Act
The process only works when both the trial state and the discovery state have enacted the UIDDA. The holdouts are few but they exist, so check the adoption status of both jurisdictions through the Uniform Law Commission’s enactment map or the discovery state’s own code before investing time. If either state has not adopted it, you fall back on older tools like commissions or letters rogatory, which require court orders on both ends.
Even among adopting states, small variations in enacting language exist. Some states added filing wrinkles the model act does not include. The process below tracks the model act; checking the discovery state’s version avoids a surprise at the clerk’s counter.
Documents You Need Before Approaching the Clerk
Start in your trial court. Obtain a subpoena issued under the authority of the court where your case is pending, properly issued according to your trial state’s rules and clearly identifying what you want from the witness. Once it crosses state lines, this document is commonly called the foreign subpoena.
Next, get the local subpoena form the discovery state uses for UIDDA requests. Most clerk’s offices provide a standardized form, often downloadable from the county clerk’s website. The local form must incorporate the terms of your trial-state subpoena and include:
- The full legal name and current address of the person or entity being subpoenaed.
- A specific description of the testimony, documents, electronically stored information, or premises you are requesting.
- The date, time, and location of the deposition or production.
- The names, addresses, and phone numbers of every attorney of record in the case and any unrepresented party.
That attorney contact list is a condition of issuance under the model act, not a formality. It ensures everyone in the litigation knows discovery is happening in another state and can respond if they need to. An incomplete submission gets rejected at the filing window.
Submitting the Request to the Clerk
Present both documents, the foreign subpoena from your trial state and the completed local form, to the clerk of court in the county where discovery will take place. That is typically the county where the witness lives or where the documents are physically located.
The clerk’s role is ministerial. The clerk confirms the form is properly completed and issues a local subpoena. No judge reviews the request, no new case gets filed, and no motion for discovery is submitted. This is what makes the UIDDA dramatically faster than the pre-act route.
Submitting the request does not count as a court appearance in the discovery state. The requesting attorney does not need to be licensed in the discovery state and does not need pro hac vice admission just to get the subpoena issued. The clerk’s counter is not a courtroom.
Expect a filing fee. The amount varies by county and is usually modest. Call the clerk’s office in advance to confirm the fee and accepted payment methods, because some offices accept only certified checks and others use electronic systems.
Serving the Subpoena and Tendering Witness Fees
Once the clerk stamps and issues the local subpoena, you are responsible for formal service of process on the witness. The discovery state’s own service rules govern, which typically means personal delivery by a professional process server or the local sheriff’s office. Process server fees generally run between $40 and $200 depending on how hard the witness is to locate. Cutting corners here is the fastest way to lose enforceability; if a witness later refuses to comply, the first thing a court examines is whether service was properly completed.
Service alone may not be enough. Most states require you to tender the witness’s attendance fee and mileage reimbursement at the time of service. In federal proceedings the statutory attendance fee is $40 per day, with mileage reimbursed at the rate allowed by law.1Office of the Law Revision Counsel. 28 U.S. Code 1821 – Per Diem and Mileage Generally State rates differ, so check the discovery state’s witness fee statute before service. The IRS standard mileage rate for 2026 is 72.5 cents per mile, which some jurisdictions use as a reference point for travel reimbursement.2Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile Failing to tender fees at service can give a witness a valid reason to ignore the subpoena.
After delivery, the process server provides proof of service, usually an affidavit describing when, where, and how the subpoena was delivered. Keep it. That affidavit is the foundation for any later enforcement action.
How Much Notice to Give
A subpoena that lands the day before a deposition is almost guaranteed to draw a motion to quash. The UIDDA itself does not set a specific notice period, but the discovery state’s procedural rules do. Some states require at least 14 days for document production, others require 30, and some apply a flexible reasonable-notice standard that courts evaluate case by case.3Legal Information Institute. Federal Rules of Civil Procedure Rule 45 – Subpoena For deposition testimony, rules modeled on the federal approach expect reasonable written notice to every other party in the case.4Legal Information Institute. Federal Rules of Civil Procedure Rule 30 – Depositions by Oral Examination
Reasonable means enough time for the witness to arrange a schedule and for any opposing party to object. In practice, most attorneys target at least two to three weeks. Rushing the timeline signals bad faith to the local court and tends to produce a motion for protection.
Whose Rules Govern the Discovery
This is where litigants get tripped up. Even though your case is pending in your trial state, the discovery state’s procedural rules control nearly everything about how the subpoena is carried out: the method of recording the deposition, the length of questioning, the scope of permissible discovery, and the process for raising objections during the session. You used the discovery state’s subpoena power, and its rules come with it.
Privilege Disputes
Privilege is the messiest piece of cross-border discovery. When a witness claims attorney-client privilege, doctor-patient privilege, or another evidentiary protection, which state’s privilege law applies does not have a single clean answer. Discovery state courts often defer to the trial state’s privilege law on the theory that the trial court will ultimately rule on admissibility. But some discovery state courts have held that their own state’s public policy requires them to evaluate the privilege claim themselves before any information leaves the state. Research the privilege rules in both states before the deposition.
Motions to Quash and Protective Orders
If the witness wants to challenge the subpoena through a motion to quash, a protective order, or another objection, that fight happens in the discovery state’s court, not the trial court. The reverse is also true: if you need to compel a reluctant witness, you file that motion in the discovery state. The local judiciary keeps full control over how its residents are treated during the discovery process.
When You Need Local Counsel
The UIDDA was designed to remove the need for local counsel during routine discovery, and it does. Issuing the subpoena, serving it, and taking the deposition do not require admission in the discovery state. But the moment a dispute arises, whether a motion to quash, a request for a protective order, or a contempt proceeding, you are making a court appearance, and the discovery state’s bar admission rules apply. At that point you either retain local counsel or seek pro hac vice admission.
Experienced litigators often identify local counsel before submitting the UIDDA request, particularly when the witness is hostile or the records are sensitive. Having someone already lined up to handle an enforcement motion beats scrambling after the deposition date slips.
Consequences of Ignoring a UIDDA Subpoena
A UIDDA subpoena carries the same force as any other subpoena issued by the discovery state’s court. A witness who ignores it risks contempt. The discovery state court has broad discretion in choosing a remedy, which can include monetary sanctions, an award of the requesting party’s attorney fees, and in extreme cases arrest. The court typically holds a hearing where the witness can explain the failure to comply. The notion that an out-of-state case cannot reach a local resident is not a defense that goes anywhere.
This is why proof of service matters so much on the requesting side. Without an affidavit showing the witness was personally served in compliance with local rules, contempt proceedings have no foundation.
Remote Depositions Across State Lines
Remote depositions by videoconference are common now, and they interact with the UIDDA in ways that are still evolving. Whether a deposition can be taken remotely, and whether the court reporter can administer the oath over video rather than in person, depends on the discovery state’s rules. Many states now permanently allow remote oath administration so long as the officer can see and hear the witness to verify identity. Others authorized remote procedures only through temporary emergency orders that may have expired.
The practical appeal is obvious: no travel for the witness, easier scheduling. But the UIDDA itself does not address remote technology, so you still issue the subpoena through the clerk, serve it on the witness, and follow the discovery state’s procedures for conducting the session. Remote tools change where people sit; they do not bypass any UIDDA step. Confirm the discovery state’s current rules on remote proceedings before assuming videoconference is on the table.