Coinbase Bitcoin Premium Index

The Coinbase premium measures how far the price of bitcoin on Coinbase sits above or below the price on Binance, comparing Coinbase’s BTC-USD market with Binance’s BTC-USDT market once a day. A positive reading is a premium; a negative reading is a discount. Coinbase is a US-regulated exchange with a dollar order book, so traders read the gap as a rough gauge of US spot demand against offshore demand.

How the Coinbase Premium Index Is Calculated

The index expresses the price gap as a percentage of the Binance price:

Premium (%) = (Coinbase BTC-USD price − Binance BTC-USDT price) ÷ Binance BTC-USDT price × 100

Hypothetical example: if BTC trades at $60,090 on Coinbase and 60,000 USDT on Binance, the premium is (60,090 − 60,000) ÷ 60,000 × 100 = +0.15%. If Coinbase instead showed $59,910, the reading would be −0.15%, a discount.

Readings are usually fractions of a percent. When the gap grows wider than trading fees plus transfer costs on both venues, arbitrage traders buy on the cheaper exchange and sell on the other, pulling the two prices back together.

Reading the Chart and Zones

• Premium zone (above 0): Coinbase buyers pay more than Binance buyers, often read as stronger buying from US retail and institutional accounts.
• Discount zone (below 0): Coinbase is the cheaper venue, which can reflect heavier US selling or weaker US demand.
• Direction and persistence: a reading that holds one side for weeks says more than a single day. The 30-day average and the “last zone change” date help separate a sustained shift from daily noise.
• Against price: BTC price is plotted on a log scale beside the premium, showing whether a rally came with rising US demand or whether price climbed while Coinbase stayed at a discount.

The all-time high and low cover only data from November 2025 onward, not bitcoin’s full trading history.

What Drives the Premium

• Regional demand: Binance serves a largely non-US user base, so a wave of US buying or selling shifts Coinbase’s price first.
• The USD vs. USDT basis: Binance’s side is priced in tether, not dollars. If USDT trades slightly off $1, the index moves even when bitcoin demand is unchanged.
• Arbitrage friction: fiat transfer times, withdrawal limits and account verification slow the capital that would close the gap, so readings tend to be wider and more persistent when that friction is high.
• Trading hours: US market hours can concentrate Coinbase activity; a daily reading smooths out these intraday swings.

Limits of the Indicator

The premium compares two prices. It does not measure volume, inflows or who is trading. A discount tells you Coinbase is cheaper. It does not tell you whether that comes from US selling, offshore buying or a stablecoin moving off its peg. Many large US purchases also settle through over-the-counter desks or brokerage channels that may never touch the public order book.

For a fuller picture of US demand, pair the premium with spot Bitcoin ETF flows, BTC held on exchanges and the Crypto Fear and Greed Index. None of these works as a buy or sell signal alone. The premium is most useful as confirmation: it shows whether a price move is being led by buyers on the main US venue.