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Calcimator

Auction Commission Calculator

Calculate net proceeds from auction sales after buyer's premium, seller's commission, lot fees, and insurance.

Inputs

%
%
%

Results

Net to seller ($)

$880

Buyer total ($)$1,200
Total seller fees ($)$120
Effective fee rate (%)12%
Auction house total ($)$320
Private sale estimate ($)$850
Auction House (%) Of Transaction26.67%
Private Sale Advantage-30
How to Use This Calculator
  1. Enter the hammer price (winning bid) and seller commission percentage.
  2. Set buyer's premium (%), number of lots, lot fee, and insurance percentage.
  3. Review Net to Seller, Buyer Total, Total Seller Fees, and Effective Seller Fee Rate (%).
  4. Compare net-to-seller across multiple auction houses before consigning valuable pieces.
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