The hammer price is only the start. On a typical Copart or IAA purchase, total fees add 15–25% on top of your winning bid before transport. A $5,000 win usually lands at $5,800–$6,400 after fees. Below: every fee, what it costs, and how to estimate your all-in number before bidding.
Quick answer
- Buyer’s premium: tiered, biggest single fee.
- Gate fee: $79–$99 per vehicle.
- Internet bid fee: $59–$129 if you bid online.
- Documentation / title fee: $20–$70.
- Environmental fee: $15.
- Broker fee (IAA public buyers): 4–8% of sale price.
- Storage: 2–3 day grace, then $20–$30/day.
- Late payment: $50–$100/day after 5 days.
Buyer’s premium: how the tiers work
The buyer’s premium is a percentage or flat fee tiered to the sale price. Both Copart and IAA publish the schedule, but the tiers update yearly. Approximate brackets in 2026:
| Hammer price | Approximate buyer’s premium |
|---|---|
| $0–$500 | $60–$95 |
| $500–$1,000 | $160–$205 |
| $1,000–$2,500 | $285–$345 |
| $2,500–$5,000 | $425–$525 |
| $5,000–$7,500 | $555–$675 |
| $7,500–$10,000 | $700–$825 |
| $10,000–$15,000 | ~7% of sale |
| $15,000+ | ~6.5% of sale, capped around $1,200–$1,500 |
Always confirm against the live fee calculator on the auction’s lot page. The brackets shift, and certain lot types (motorcycles, heavy equipment, "as-is no-key") use different schedules.
Gate fee
A flat fee per vehicle, charged for moving the lot from the storage yard to the loading area. Currently around $79–$99 at both Copart and IAA. Not negotiable.
Internet bid fee
A flat fee charged whenever you bid through the website rather than in person. Tiered:
- Live online bidding: $59–$79 typical.
- Pre-bid + live: $79–$129.
In-person bidding waives this fee but few public buyers are near a yard.
Documentation and title fee
A clerical fee for processing the title transfer, typically $20–$70 per vehicle. Higher for out-of-state titles or vehicles without a current title (bill of sale only).
Environmental fee
A small flat fee — usually $15 — covering hazardous-fluid handling. Mandatory.
Broker fee (IAA public buyers only)
Because IAA does not let the public bid directly, public buyers go through licensed-dealer brokers (Auto Bid Master, SCA, JS Cars, Salvagebid). The broker charges a per-purchase service fee on top of all auction fees:
- Flat fee: $150–$400 per vehicle on lower-priced lots.
- Percentage: 4–8% of the sale price on higher-priced lots, sometimes both.
- Membership: some brokers add an annual fee ($100–$300) for premium bid limits.
Storage fees
Both auctions include 2–3 days of free storage after the sale. After that, $20–$30 per calendar day until the vehicle is picked up. If you cannot get a transporter immediately, storage adds up fast — a 10-day delay is $200–$300.
Late payment and cancellation
- Late payment: $50–$100 per day after the 5–7 day payment window.
- Relisting / non-pay: if you fail to pay, you forfeit deposits and are charged a relisting fee, often $400+. Repeat offenders get banned.
Worked example: a $5,000 Copart win
| Line item | Cost |
|---|---|
| Hammer price | $5,000 |
| Buyer’s premium (tier) | $525 |
| Gate fee | $95 |
| Internet bid fee | $79 |
| Title / documentation | $60 |
| Environmental | $15 |
| Subtotal at Copart | $5,774 |
| + IAA broker fee (if applicable) | +$200–$400 |
| + Transport (US average, 500 mi) | +$500–$900 |
| Total delivered | $6,300–$7,100 |
Use this as a sanity-check before bidding. Then run the VIN through the Taziky estimator to confirm your all-in cost is below the vehicle’s clean-title comparable value.
How to reduce auction fees
- Buy directly from Copart instead of through an IAA broker if the inventory works.
- Bid in tiers — going from $4,950 to $5,050 can move you up a buyer’s-premium tier.
- Pre-arrange transport so you pick up within the free-storage window.
- Pay in 24 hours. Many auctions waive small fees for fast-pay buyers.
- Bundle multiple wins in the same yard to share transport cost.
Key takeaways
- Total fees typically add 15–25% to the hammer price.
- Buyer’s premium is the largest line. The tier breaks matter — bid carefully near boundaries.
- Public IAA buyers pay an additional broker fee. Copart is cheaper for direct public access.
- Storage is a hidden cost when transport gets delayed. Plan logistics before bidding.
- Use a fee calculator and a Taziky valuation to know your max bid before you start.
Frequently asked questions
What is a buyer’s premium at a car auction?
A fee charged on top of the hammer price, paid to the auction. It is tiered by sale price and is usually the largest single fee on a purchase.
How much are total fees at Copart?
Typically 15–20% on top of the hammer price for direct buyers, including buyer’s premium, gate fee, internet bid fee, documentation, and environmental.
Why are IAA fees higher for the public?
IAA does not allow direct public bidding. Public buyers go through licensed-dealer brokers who charge an additional per-purchase fee, raising the all-in cost.
Are auction fees negotiable?
Generally no. Auction fees are fixed by schedule. Broker fees may have small flexibility on volume.
Do auction fees include sales tax?
Usually no. Sales tax is paid when you register the vehicle in your state, separately from auction fees.
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