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Gifting a Car in Idaho: What It Really Costs

Idaho makes gifting genuinely cheap: no sales tax at all on a true gift, or on a sale between close relatives, as long as you file the right form. The qualifying relationships follow what Idaho law calls the 'second degree of consanguinity' - parents, children, grandparents, grandchildren, and siblings - plus spouses. Give the same car to a cousin, aunt, uncle, or in-law and Idaho treats it as an ordinary sale, taxed at 6%.

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Your numbers

$

Idaho's 44 county assessor offices each set their own small administrative add-on - this changes your total by a few dollars, not the state's age-based fee.

Official fees

Idaho gift a car fee chart

Sales tax on qualifying gift/family transfer

$0.00

Title fee

$14.00

plus county filing add-on

Non-qualifying transfer (friend, cousin, in-law)

6% of price

Registration (if plates change hands)

$45–$69/yr

by vehicle age

Figures verified July 2026 against official sources (listed below). Always confirm the final amount with your county DMV/assessor's office (Idaho Transportation Department) - counties can add small local fees.

Official Idaho forms you'll need

  • ST-133GTUse Tax Exemption Certificate - Gift Transfer Affidavit

    Declares the gift so the use-tax exemption applies.

  • ITD 3337Application for Certificate of Title

    still required - a gifted vehicle transfers title the same way as a sale

Get the current version of each form from your county DMV/assessor's office (Idaho Transportation Department) before you file - agencies revise forms, and offices reject outdated ones.

Step by step

How to gift a car in Idaho

  1. 1

    Confirm the relationship qualifies: spouse, parent/child, grandparent/grandchild, or sibling.

  2. 2

    Sign the title over to the recipient - Idaho doesn't require a specific price entry for a true gift.

  3. 3

    Complete Form ST-133GT for a no-money gift, or Form ST-133 for a discounted family sale, and have both parties sign.

  4. 4

    Bring the title, the completed form, and ID to the county assessor within 30 days.

  5. 5

    Pay the $14 title fee plus your county's small add-on - no sales tax if the exemption applies.

Tax on qualifying transfer
$0
Title fee
$14 + county fee
Forms
ST-133 / ST-133GT
Qualifies
Spouse, parent/child, grandparent/grandchild, sibling
Doesn't qualify
Aunt, uncle, cousin, in-law

Overview

The paperwork splits in two: a genuine no-money gift uses Form ST-133GT (Use Tax Exemption Certificate - Gift Transfer Affidavit), while a real sale at a reduced or fair price between qualifying relatives uses Form ST-133 (family sale exemption). Both go to the county assessor with the title, and there's one condition that trips people up - the exemption only holds if sales or use tax was already paid on the vehicle at some point in its history.

Same state, other costs

More Idaho vehicle costs

Common questions

Idaho gift a car FAQ

Who counts as family for Idaho's gift tax exemption?
Spouses, parents, children (including step and adopted), grandparents, grandchildren, and siblings - what the state calls the second degree of consanguinity. Aunts, uncles, cousins, nieces, nephews, and in-laws do not qualify and get taxed like any other sale.
What's the difference between ST-133 and ST-133GT?
ST-133GT is for a true gift - no money changes hands. ST-133 covers a family sale, even at a below-market price, between the same qualifying relatives. Both exempt the transfer from Idaho's 6% sales tax when properly signed and filed with the title.
Do I still pay anything to gift a car in Idaho?
Just the title fee - $14 plus your county's small filing add-on (a few dollars up to about $19). If you're also swapping plates or the vehicle needs to be registered fresh, the usual age-based registration fee applies too.
Can I gift a car that still has a loan on it?
Not until the lien is released. The lender holds the title until the loan is paid off or the recipient takes over financing in their own name - at which point it's arguably a sale, not a gift, for tax purposes.
Is there a catch to the family exemption?
Yes - it only applies if sales or use tax was already paid on the vehicle at some point. If the car's ownership history includes another tax exemption (say it was previously a dealer demo or a prior gift), the chain can break and tax may still be owed despite the qualifying relationship.
Does the recipient owe any other tax later?
No state gift tax in Idaho beyond the vehicle sales tax exemption itself, and receiving a gifted car isn't state income. Very large gifts can touch federal gift-tax rules for the giver, but that's an IRS matter, not something the county assessor handles.

Receipts

Official sources

Every number on this page comes from these documents - check them yourself.

Everywhere else

Gifting a Car: Taxes & Fees by state

Fees and rules are different in every state. Pick yours for exact numbers.

each state hand-verified against its DMV before it goes live

Disclaimer

DMVCosts provides fee estimates for general informational purposes only - it is not legal, tax, or financial advice, and no calculator can account for every county surcharge, exemption, or mid-year rate change. Figures are verified against official sources on the date shown, but fees change over time.

The final, binding amount is always the one quoted by your county DMV/assessor's office (Idaho Transportation Department). Confirm with them before making payment decisions. To the fullest extent permitted by law, DMVCosts disclaims all liability for decisions made based on these estimates.