How to fill out Arizona 38-4306

Eight fields that say two names belong to the same person. Arizona needs it when the name on an ownership document and the name being signed look different enough to be two people - a married name against a maiden name, a company that trades under a shorter version of itself, a middle name that appears on one document and not the other.

Top of the blank Arizona 38-4306, One and the Same Certificate, as the agency publishes it

Step 1 · the form itself Blank 38-4306 — One and the Same Certificate PDF at apps.azdot.gov · new tab View the blank 38-4306

Top of our filled-in example of Arizona 38-4306, One and the Same Certificate

Step 2 · how to fill it in Our filled-in 38-4306 guide PDF · 2 pages · 360 KB · new tab See our filled-in example

Two documents, and they are not the same thing. Take the blank 38-4306 from the apps.azdot.gov copy so you get the revision that is current today, then print our 38-4306 guide and keep it beside you while you fill theirs in.

Written against 38-4306 (R07/25), issued under A.R.S. 28-2059. This is the shortest form in the Arizona set and the easiest to over-use. Before you fill one in, check ADOT's actual rule: a shorter signature is fine as long as the person signing can show identification. The certificate is for the opposite case.

Last updated August 22, 2026.

Filled in

What a completed one looks like

This is the actual 38-4306, rendered from the PDF the Arizona Department of Transportation, Motor Vehicle Division publishes and completed end to end: letterhead, every field, and the blocks at the foot.

Amber — you write it
Grey — not yours to fill
Numbered — explained below

The Arizona One and the Same Certificate, form 38-4306, completed for a 2016 Toyota Tacoma, showing the name on the document as Rosalind Marie Teague-Whitlow and the individual name as Rosalind M. Teague, with the representative line blank and a signature and date of 08/12/2026 at the foot. — Two names, one certification, and nothing else on the sheet. The order matters: the top line is what the ownership document says, the second is the name being signed today.

Field by field

Every line, in the order you meet it

1
You fill this in
Vehicle Identification Number, Year, Make
The vehicle whose paperwork carries the mismatch.
Watch out: One certificate covers one vehicle. Two cars in the same wrong name means two forms.
2
You fill this in
Name On Document
The name as it is printed on the title or other ownership document, character for character.
Watch out: Copy it, do not tidy it. If the title says TEAGUE-WHITLOW with a hyphen, that is what goes on this line.
3
You fill this in
Individual Name or Organization Name
The other version of the name - the one on the identification you will present.
Watch out: It has to match the identification. A third variant that appears on neither document creates a second problem rather than solving the first.
4
You fill this in
Representative Name
Only where the second line is a company.
Watch out: The person named here also has to show that they are authorised to act for the business, which usually means a letter on company paper or a matching business card.
5
You fill this in
Signature and Date
The person certifying that the two names are one person.
Watch out: Sign it in front of whoever is taking the transaction, not at home. Nothing on this form is worth anything without the identification beside it.

At a glance

What goes where

On the form	What to put in it
Vehicle Identification Number, Year, Make	The vehicle the certificate travels with.
Name On Document	The name exactly as it is printed on the title, the bill of sale or whatever the ownership document is.
Individual Name (first, middle, last, suffix) or Organization Name	The other name - the one being signed, or the one on the identification presented.
The certification	One sentence: I certify that the two names above are one and the same person, or one and the same organization.
Representative Name (if Organization Name above), Signature, Date	Three fields. A company signs through a named representative.

What gets this one rejected

•Using it for a shortened signature. ADOT is explicit that a common form of proper names or a shortened version of a name for a signature is acceptable, including the seller's signature on the back of the Arizona title, and that a One and the Same Certificate will not be required.
•Using it to change a name. It says two names belong to one person; it does not update anything MVD holds.
•Naming two genuinely different people. It is a certification made under the same penalties as anything else filed with the Division.
•Leaving the representative line blank where an organisation is named. The form asks who is signing for the company.
•Filing it on its own. It is supporting documentation and it travels with the transaction it supports.

Rules that decide whether it is accepted

•It is triggered by more, not less. The Division's rule for the back of a title is that a seller may sign less of their name but not more. Adding a middle name that is not printed on the face is what brings this form into play.
•Nicknames usually do not need it. MVD's own worked example is Robert Smith who goes by Bob and signs the title as Bob Smith: he will not need to fill out a One and the Same Certificate.
•Companies use it too. The wording covers one and the same organization, which is how a trading name is reconciled with a registered one.

Every line here was read off 38-4306 (R07/25) itself — the PDF is here — and off the Arizona Department of Transportation, Motor Vehicle Division pages. This is plain-language help with a form, not legal advice, and where our wording and the agency's differ, theirs governs.

Forms that go with this one

Title in your maiden name, signature in your married one? This certificate squares the two, and the Scottsdale MVD office on Paradise Lane and its hours are on our Scottsdale page.

Back to all Arizona seller paperwork, or what selling a car in Arizona involves.

How to fill out Arizona 38-4306

What a completed one looks like

Every line, in the order you meet it

Vehicle Identification Number, Year, Make

Name On Document

Individual Name or Organization Name

Representative Name

Signature and Date

What goes where

What gets this one rejected

Rules that decide whether it is accepted

Forms that go with this one

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