What is the out-the-door price of a 2021 Cadillac CT5 in Idaho?

The out-the-door price for a 2021 Cadillac CT5 in Idaho is about $31,379 — the national fair price of about $29,094 plus a 6% state sales/use tax of about $1,746, a dealer doc fee of about $399, a title fee of about $14, registration of about $126. Local taxes can add more.

How much is sales tax on a 2021 Cadillac CT5 in Idaho?

At the Idaho state base rate of 6%, sales/use tax on a 2021 Cadillac CT5 priced around $29,094 is about $1,746. Local (city/county) taxes can add more.

Out-the-door price data

2021 Cadillac CT5 out-the-door price in Idaho

Independent estimateMileage-adjusted from live listingsNo dealer influence

Real price estimateUpdated August 2026

2021 Cadillac CT5

Estimated out-the-door price

Idaho

$31,379

The real, all-in price to drive a 2021 Cadillac CT5 home in Idaho — fair market price, taxes, and fees together.

What makes up the price

$31,379

Fair price 93%Sales tax 5.6%Fees 1.7%

Out-the-door total$31,379

The breakdown

sums to total

National market fair priceMileage-adjusted from live listings: $29,094
Idaho sales / use tax6% state base rate: $1,746
Dealer documentation feeTypical dealer doc fee: $399
Title feeDMV title transfer: $14
RegistrationValue-based — varies by county: $126

Out-the-door total

$31,379

How fees work in Idaho

State base 6%; doc fee uncapped (~$399); $126 reg representative for a ~3-yr-old car.

Common questions

What is the out-the-door price of a 2021 Cadillac CT5 in Idaho?: About $31,379 — the national fair price of about $29,094 plus Idaho sales tax, doc fee, title, and registration. Local taxes can add more.
How much is sales tax on a 2021 Cadillac CT5 in Idaho?: At Idaho's 6% state base rate, sales/use tax on a 2021 Cadillac CT5 priced around $29,094 is about $1,746. Local taxes can add more.

Keep researching

Idaho dealer feesSales tax, doc, title & registration 2021 Cadillac CT5 national priceFair price across all states How out-the-door price worksWhat goes into the all-in number

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The fair price shown is the national market fair price (mileage-adjusted from live listings); theIdaho figures are the state base sales/use tax and typical doc, title, and registration fees. Local (city/county) district taxes can add more, dealer doc fees vary, and registration is value-based. Estimates only · updated 8/5/2026.