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How to Fill Out a Bill of Sale in Idaho

A step-by-step guide to every field on a 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 one of the simplest tax pictures in the West: 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 — no notary. One Idaho-specific line worth adding to any bill of sale: whether the price includes a trade-in, because Idaho deducts documented trade-in value from the taxable amount.

Notarization:Not required
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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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: buyer owes 6% Idaho sales tax on the sale price at registration
Tip: Put the genuine number here — the Idaho DMV bases the 6% sales tax on it and audits outliers against valuation guides.
5

Seller Signature

  • Seller's signature (must match title)
  • Printed name
  • Date signed
Tip: Idaho asks for no notary on this document — the two signatures complete it. Keep a copy of the signed page for several years.
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. All fields are pre-configured for Idaho requirements — notarization not required, ID sales tax at 6%, and 30-day 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 a 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 purchase price minus any documented trade-in.
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.
How does a trade-in change the tax?
Documented trade-in value is deducted from the taxable price — so if the deal includes one, itemize it on the bill of sale: total price, trade-in allowance, and cash difference. The 6% applies to the net figure.

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 →

Idaho Templates by Vehicle

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