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How to Fill Out a Bill of Sale in Idaho

A step-by-step guide to every field on an Idaho vehicle bill of sale — with a free filled-in example you can download instantly.

Idaho's Form ITD 3738 covers a vehicle OR a vessel — one form for both — and feeds a simple tax picture: a flat 6% state sales tax with NO local add-ons, identical in Boise and in Bonners Ferry, calculated on the price you record. The venue is the county: Idaho titles are processed at the county assessor's motor vehicle office (DMV services live under county assessors here), where the buyer files within 30 days. Fill in the parties, the vehicle or hull identifiers, odometer, true price, date, and both signatures — Form ITD 3738 has no notary block. One Idaho-specific point worth knowing: a private sale gets no trade-in allowance, because Idaho sales tax on a vehicle bought from an individual is owed on the total sales price — so record the full price.

Notarization:Not confirmed
Title deadline:30 days
Sales tax:6%
Official form:ITD 3738
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Vehicle Bill of Sale · Idaho
Idaho Requirements: Transfer title within 30 days. 6% sales tax.

Seller Information

Buyer Information

Vehicle Details

Sale Information

Condition & Warranty

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State rules change. We check these requirements against official state sources, but details can go out of date. Confirm with your state's motor vehicle agency before you rely on them. If you notice anything wrong or outdated, email support@billofsale.app.

Step-by-Step: Every Field Explained

1

Seller Information

  • Full legal name
  • Current mailing address
  • City, state, ZIP code
  • Phone number (optional but recommended)
Tip: Match the ownership document precisely: if the title says a middle initial, this line says a middle initial, or the Idaho DMV will notice.
2

Buyer Information

  • Full legal name
  • Current mailing address
  • City, state, ZIP code
  • Phone number (optional)
Tip: Enter the buyer's name as it will appear on the new registration in Idaho; consistency here saves a second trip.
3

Vehicle Description

  • Vehicle year (4-digit)
  • Make (manufacturer — e.g., Ford, Toyota)
  • Model (e.g., F-150, Camry)
  • Body style (e.g., sedan, pickup, SUV)
  • Color
  • VIN (Vehicle Identification Number) — 17 characters, found on the dashboard or door jamb
  • Odometer reading at time of sale
Tip: Verify the VIN twice — once against the dashboard plate, once against the title. A single transposed character is enough to bounce the paperwork.
4

Sale Details

  • Sale price in US dollars (write out both numerals and words — e.g., "$8,500 — Eight thousand five hundred dollars")
  • Payment method (cash, check, electronic transfer)
  • Date of sale (month / day / year)
  • Note: the buyer pays Idaho tax at registration (6% sales tax)
Tip: Put the genuine number here — the only price both parties to this Idaho sale can stand behind later.
5

Seller Signature

  • Seller's signature (must match title)
  • Printed name
  • Date signed
Tip: Notary rule in Idaho: Not confirmed for an ordinary title assignment; a Duplicate Title with Ownership Transfer (ITD 3369) must be notarized or signed before an assessor.
6

Buyer Signature

  • Buyer's signature
  • Printed name
  • Date signed
Tip: Execute two originals — each party walks away holding a fully signed copy, not a photo of one.

Get a Pre-Filled Idaho Example

Use the generator above to create a filled-in Idaho bill of sale example in under 60 seconds. Fields are set up for Idaho — no notary section, ID sales tax at 6%, and 30-day title transfer deadline noted.

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Other Forms Required in Idaho

Along with the bill of sale, you may need these additional documents for an Idaho vehicle transfer:

  • Application for Certificate of Title (Form ITD 3337)
  • Bill of Sale (Form ITD 3738)

Frequently Asked Questions

Why does ITD 3738 mention vessels?
Idaho uses the same bill of sale form for motor vehicles and boats — circle the asset type and use the VIN for vehicles or the hull ID for vessels. The 6% tax and county-assessor filing path are the same.
Is Idaho's 6% really flat statewide?
Yes — Idaho has no local-option sales taxes on vehicles, so the 6% state rate is the entire bill everywhere in the state, assessed on the total sales price (a private sale gets no trade-in allowance).
Where does the buyer title the vehicle?
At the county assessor's motor vehicle office — Idaho runs DMV services through county assessors — within 30 days of the sale, with the signed title and the ITD 3738 or equivalent bill of sale.
Does a trade-in lower the tax on a private sale?
No. When you buy from an individual, Idaho sales tax is owed on the total sales price and there is no trade-in allowance — so write the full price on the bill of sale, which the Idaho State Tax Commission requires as proof of the sales price.

Idaho Bill of Sale Hub

All requirements, tax rates, deadlines, and forms for Idaho.

View Idaho guide →
Official Form

ITD 3738

Documents a private vehicle sale in Idaho. Establishes the sale price for 6% Idaho sales tax calculation; accompanies the title at the DMV.

ITD 3738 guide →

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