Fill Idaho’s Official Bill of Sale (ITD 3738) Online
ITD 3738 is the Idaho Transportation Department’s official Bill of Sale. AttachKit lets you fill the real ITD 3738 PDF in your browser — VIN, year, make, model, odometer reading, price, and both parties — then download or print it. Keep Idaho’s deadline in mind: buyers generally have 30 days to register after a private purchase.
Your PDF never leaves your browser — open DevTools → Network and watch: the file is never uploaded.
Who needs it: Idaho private buyers and sellers who want an official record of the sale — including the odometer reading — before the buyer registers the vehicle within 30 days.
Need a blank Bill of Sale (ITD 3738)? Download from the source, then drop it in below.
Save your name, address, and other common fields once. Then open the blank Bill of Sale (ITD 3738) in the form filler below — AttachKit maps what it can from your saved profile, right in your browser with nothing uploaded.
Set up profile →Why fill it here
- Fill the genuine Idaho ITD 3738 form, including the odometer line.
- Reminds you of the 30-day registration window after purchase.
- Client-side only — your details are never uploaded.
- Free to fill unlimited forms (10 signed PDFs/mo on the free tier).
Fill your Bill of Sale (ITD 3738) now
Bill of Sale (ITD 3738) questions, answered
General information, not legal or tax advice
This page is general information about a commonly-used document. State and local law varies — for advice on your specific situation, consult a licensed attorney in your jurisdiction. AttachKit fills the PDF; you're responsible for whether the contents are right for your case.
- Does Idaho require the bill of sale to be notarized?
- Notarization is not generally required on ITD 3738 for a standard private sale. Both buyer and seller sign. This is not legal advice.
- When must I register after buying?
- Idaho buyers generally have 30 days to register with the local DMV after a private purchase; out-of-state transfers have 90 days.
- Does AttachKit register or title the vehicle?
- No. AttachKit only helps you fill and download the official form. Titling and registration are your responsibility.
- Is my data private?
- Yes. The PDF is filled in your browser and never sent to a server.
More forms: NDA · Contractor agreement · Power of attorney · Bill of sale · Release of liability · Browse all 125 forms →
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AttachKit is a private, independent tool for filling and signing PDFs on your own device. It is not a government agency, law firm, or filing service, and is not affiliated with or endorsed by the IRS, USCIS, the U.S. Department of State, or any government body. Forms are provided for convenience — always download the current version and instructions from the official .gov website, and your completed document never leaves your browser.