Metal billed separately and index-linked pricing: the convention that shields you from precious metals

If you work gold, platinum, palladium or rhodium, you already know the feeling: you drew up a quote three weeks ago, the customer accepts it today, and in the meantime the metal has moved. The question is who pays the difference. The convention of metal charged separately, that is index-linked pricing, exists precisely to answer this question cleanly, before it turns into an argument. It is a common commercial practice in electroplating and it is simpler than it looks to anyone who does not use it yet.

What metal charged separately means

An electroplating quote contains line items of very different kinds. There is the shop's work: labor, energy, preparation, controls, your margin. And there is a raw material you do not produce and over which you have no control: the precious metal that ends up deposited on the part. Throwing them all into the same pot and naming a single price means mixing something you control with something you do not.

Metal charged separately does the opposite. It separates the metal share from the rest and explicitly ties it to the price of the moment, that is the spot price. The rest of the quote stays yours and stable; the part tied to the precious metal is linked to the market and stated as such. In the document it becomes a recognizable line item, with a clear reference to when it was priced.

Why this convention exists

It exists because precious metals are not just any cost. They are the only item in your quote that can change on its own, without you having touched anything, while the sheet is already on the customer's desk waiting for a signature. Gold, platinum, palladium and rhodium move constantly, sometimes sharply, and on a batch with heavy thicknesses that part weighs. A quote that freezes a metal price from weeks earlier is, in effect, a bet: you are promising a price on a raw material you will pay for at a value you do not yet know.

Index-linked pricing takes the bet off the table. You are no longer gambling on the metal; you are charging the metal for what it is worth when the job actually starts. Your margin goes back to depending on your work, not on the mood of the market.

The benefit for you and for the customer

The interesting thing about metal charged separately is that it is not a trick in the shop's favor against the customer. It protects both, and that is why it holds up over time.

• Transparency. The customer sees clearly how much of the price is your work and how much is metal passing through your tanks. They understand where their money goes, and this removes the suspicion that you are marking things up where it does not show.
• Protection from swings, for you. If the metal rises between the quote and the job, you do not lose out of your own pocket. The share is tied to the spot price, not to an old number written once and never touched again.
• Protection from swings, for the customer. If the metal falls, the customer does not pay an inflated price fixed when the market was high. They pay the fair amount. It is an honest deal in both directions.
• Fewer arguments. The rule is stated up front. When the invoice arrives there is nothing to renegotiate, because the criterion was written in black and white from the start.

Anyone who doesn't use this convention tends to do one of two things, both of which lose money. Either they keep a cautious, high price to cover themselves against the metal rising, and so they come out expensive and lose jobs. Or they quote low, the metal moves against them, and they eat the margin on the batch almost without noticing.

The moment that counts: freezing at signing

There's one detail that separates those who manage it well from those who go by gut. The metal price has to be pegged at the right moment and then frozen when the customer accepts. As long as the quote is open, the metal price needs to breathe with the market, so that what you're offering is always current. The moment the customer says yes, though, the price gets locked: the figure they accepted must be the one they pay, with no surprises in either direction.

It's a balance that's easy to explain and extremely awkward to keep by hand. It means knowing what the good price is at the moment you prepare the quote, remembering to update it if the document sits still for a few days, and then locking it in at the exact instant of acceptance. On one quote now and then, you can manage it. Across dozens of open quotes at once, with customers replying whenever they feel like it, it becomes a monitoring job that nobody wants to do.

Easy to understand, hard to do by hand

This is the point. The convention of pricing the metal separately is clear on the commercial side: you separate, you peg, you freeze at signing. But keeping it going by hand, between a price list copied who knows when and a spreadsheet floating around in several versions, is where the mistakes hide. All it takes is using an old price, forgetting to update it, getting the reference date wrong, or no longer remembering which spot an accepted quote was locked at, and the advantage of transparency turns into its opposite: a line item you can no longer justify when the customer asks you to account for it.

The problem, as always with precious metals, isn't understanding what should be done. It's doing it well every time, on every quote, while you work. The convention gives you the right rule; but a right rule handled by gut, among scattered spreadsheets and prices copied by hand, remains a constant source of small slips that, added up over the year, are worth more than you imagine.