The room moves fast.
Your math shouldn't.
Premium fees, currency conversion, and final costs — calculated in real time across every major auction house.
— Beat one
Pick a house.
Pick a saleroom.
Christie's, Sotheby's, Phillips. Hong Kong, New York, London, Paris, Geneva. Each saleroom configured with the actual premium tiers the house publishes.
— Beat two
Type your hammer.
See the total.
The premium math is progressive — three tiers at Christie's Hong Kong, each with a different rate. The total updates as you type, accurate to the unit.
— Beat three
Convert at the
real rate.
Pick any major currency. The conversion uses the live exchange rate at the moment you tap — not yesterday's, not 'approximately.' The number you see is the number you'll pay.
— Trusted for
Sixteen salerooms.
Three houses.
Four continents.
Christie's, Sotheby's, Phillips. Hong Kong, New York, London, Paris, Geneva. Every saleroom configured with the actual premium tier structure published by the house.
Christie's
6 salerooms
Sotheby's
6 salerooms
Phillips
4 salerooms
Built for serious bidders
Live premium fees
Christie's, Sotheby's, Phillips — always current with the published rates.
Real-time conversion
USD, HKD, GBP, EUR, AED, JPY — every major currency at current FX rates.
Tier-accurate math
Progressive premium tiers, computed to the unit. No rounding surprises at the cashier.
— The problem
Premium fees aren't intuitive.
That's the point.
A $100,000 hammer at Christie's New York isn't $100,000. It's $124,000 once the buyer's premium kicks in. And those tier breakpoints shift every twelve months without warning.
BidMate keeps the math current so you don't have to. Type your bid; see the real total before the gavel.
Christie's Hong Kong tier structure
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