Free Tool for Car Dealers

Sales Tax Calculator for Car Dealers

Buying in one state. Selling in another. Tax rules change everything. Get the right number before you price.

🛠 Vehicle & Transaction
Trade-in reduces taxable amount in most states
Pre-filled with typical dealer doc fee
Dealer Sale
Private Sale
Retail
Wholesale
🌏 Location
Or use "Custom Rate" for precision
Warning: Your doc fee exceeds the state cap. You may need to refund the difference or adjust your pricing.
Wholesale Exemption: This transaction may be exempt from sales tax. Verify with your state DMV.
Dealer must collect sales tax at time of sale. Remit to state according to filing schedule.
📊 Results
State Tax Rate
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Local Tax Rate
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Combined Rate
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Taxable Amount
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Sales Tax Amount
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Documentary Fee
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Total Tax + Fees
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Total Transaction
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Collection Note: --
Disclaimer: Tax rates and rules change frequently. Verify current rates with your state DMV or tax authority before finalizing any transaction. This calculator is for estimation purposes only and does not constitute tax or legal advice.
🔄 Multi-State Comparison

Compare the same vehicle across multiple states to find the best place to register or retitle.

Total Cost
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Total Cost
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Total Cost
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👥 Dealer vs. Private Seller

Dealer Sale

  • Must collect sales tax at time of sale in most states
  • Responsible for remitting tax to state on schedule
  • Must follow state doc fee caps and disclosure rules
  • Out-of-state buyers: may need to collect tax or provide exemption form
  • Wholesale dealer-to-dealer sales often exempt

Private Sale

  • Buyer typically pays tax directly to DMV at registration
  • Seller has no collection obligation in most states
  • No doc fee regulations apply
  • Out-of-state buyer pays tax in their home state
  • Some states exempt private sales below a threshold
Marcus says: "I sold a car to a guy in Louisiana once. Didn't know they cap doc fees at $200. I charged $450. Had to refund $250. Know the rules before you quote."

Out-of-State Sale Rules

When you sell to a buyer in another state, tax obligations get complicated. Here's what you need to know:

  • Destination state rules: The buyer usually pays tax in the state where they register the vehicle.
  • Dealer collection: Some states require you to collect tax if you deliver the vehicle there. Others exempt if the buyer takes delivery out of state.
  • Exemption certificates: Out-of-state buyers may provide a resale or out-of-state exemption certificate.
  • Use tax: If no sales tax was collected, the buyer's state may charge use tax at registration.
  • Temp tags: Some states issue temporary tags that require proof of tax payment or exemption.
📅 Tax Calendar Reminders

When is your sales tax due? Filing frequencies vary by state and your sales volume. This is informational only — verify with your state tax authority.

FAQ
Do I charge sales tax on out-of-state sales? +
It depends on the states involved and how delivery occurs. If you deliver the vehicle to the buyer in their state, you may need to collect tax for that state (if you have nexus). If the buyer takes delivery in your state and drives it home, you typically collect your state's tax. Most out-of-state buyers will pay use tax when they register in their home state. Always get an exemption certificate if you're not collecting tax.
Does a trade-in reduce the taxable amount? +
In most states, yes. The trade-in credit reduces the taxable base — you only pay tax on the difference between the sale price and trade-in value. However, a few states do not allow trade-in credits (notably California for the full trade-in value in all cases, and Hawaii). Check your state's specific rules, as some cap the trade-in deduction or have different rules for leases.
What's the deal with doc fees? Is there really a cap? +
Many states cap documentary fees (also called dealer fees, processing fees, or admin fees). For example, California caps it at $85, Louisiana at $200, and Illinois at $300. Some states have no cap but require disclosure. Charging above the cap can result in refunds, fines, or regulatory action. Always check your state's current cap — they change.
Are wholesale transactions exempt from sales tax? +
Generally, yes. Dealer-to-dealer wholesale transactions are exempt from sales tax in most states because the vehicle is being purchased for resale. The buying dealer will collect tax when they sell to the retail customer. You must keep proper documentation (resale certificates, dealer licenses) to support the exemption. Some states require specific exemption forms.
When does a dealer have to collect tax vs. the buyer paying DMV? +
In most states, licensed dealers must collect sales tax at the point of sale and remit it to the state. The buyer should not pay tax again at DMV. However, in some situations — like out-of-state sales, private sales, or certain special transactions — the buyer pays use tax directly to DMV when registering. If you're a dealer, assume you must collect unless you have a specific exemption.

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