Crypto, and where the conversion sits

Row 01The conversion point is the valuation, not the transfer

A crypto deposit has two distinct things happening: a coin moves on its network, and a value is expressed in the account’s currency. The movement is the transfer; the expression is the conversion, and it happens where the operator or its processor values the coin and credits the balance at a rate it sets. That valuation rate is where a margin can sit, exactly as on a card conversion. The coin itself is not “the currency of the account” unless the wallet holds that coin as a pocket; for most accounts, the coin is valued into the base currency and the balance is credited in that currency, so the conversion is real even though no exchange desk appears in the flow.

Row 02Stablecoins and volatile coins behave differently at the valuation point

A stablecoin is designed to hold a value close to a reference currency, so the conversion from it is closer to a denomination change than a price change — the margin is the operator’s, not the market’s. A volatile coin is worth whatever it is worth at the moment of valuation, so its valuation rate is set by the market, and the operator applies its margin on top. In both cases the conversion is the valuation step, but the source of the rate differs: for a stablecoin the rate should track its peg, while for a volatile coin the rate tracks its market. The practical difference is that a volatile coin’s credited amount depends on when the valuation happened, whereas a stablecoin’s is much less sensitive to the moment.

Row 03Two costs that look like one and are not

A crypto deposit carries two separate costs. The network fee is the cost of moving the coin on its blockchain — it is paid to the network, it varies with congestion, and it has nothing to do with currency. The conversion margin is the gap between the coin’s market value and the value you were credited, applied by the operator or processor. Both can apply to the same deposit, and they are different subjects: the network fee is the rail, described on Chain Desk; the conversion margin is the rate, which is this desk. Confusing them leads to blaming a “high fee” for what is actually a rate margin, or vice versa, so it is worth holding them apart in the record.

Row 04On the way out, the same two costs reverse

A crypto withdrawal reverses the pair: the balance is expressed in a coin at a valuation rate set by the operator, the coin is then sent on its network, and the network fee applies to that send. The conversion margin is the gap between the balance-currency value and the coin value you are credited, and the network fee is separate again. If the receiving wallet is another currency, a further conversion may apply where it lands. So a crypto leg can carry a conversion margin, a network fee and a final conversion, and only the middle one is the rail. Reading the record with the two costs separated is what makes a crypto withdrawal legible instead of a single opaque deduction.

Row 05Reading a crypto conversion record

Three figures let you separate the costs: the coin amount sent, its market value at the time, and the amount credited to the account. The gap between the coin’s market value and the credited amount, as a percentage, is the conversion margin; any network fee is a separate line and belongs to the rail. Where the operator shows only the credited amount, the market value at the valuation moment is obtainable from a price reference, and the same subtraction gives the margin. This is the same measurement as on any conversion, applied to a coin leg — and it is the honest way to see whether a crypto path is cheaper or dearer than a card path, rather than comparing headlines.

• Coin amount sent The quantity of the coin transferred, before valuation.
• Market value at valuation The coin’s price at the moment the operator valued it.
• Credited amount What the account received in its own currency.
• Separate the fee The network fee is its own line; do not fold it into the conversion margin.