Circulating Supply Definition: Circulating supply is the number of cryptocurrency coins or tokens that are publicly available and actively trading in the market — coins that have been issued and are not locked, reserved, or otherwise inaccessible. It is the denominator used to calculate a cryptocurrency’s market capitalisation, and it differs from total supply (all coins ever created) and maximum supply (the protocol’s hard cap on how many coins can ever exist).
What Is Circulating Supply?
Not every coin that exists is available to buy. A project may have created 1 billion tokens, but if 600 million are locked in vesting contracts for founders and investors, only 400 million are genuinely circulating. The circulating supply is that subset — the tokens actually available in the market, in wallets that can transact freely.
The distinction matters because market capitalisation — price multiplied by supply — is the primary metric used to compare cryptocurrency valuations. Using total supply instead of circulating supply would inflate the apparent market cap of projects with large locked allocations, making them look more valuable than they actually are relative to their truly liquid float. Circulating supply normalises this by counting only what the market can actually price and trade.
What counts as “circulating” varies slightly between data providers and projects. Most methodologies exclude coins held in known lock-up contracts, team vesting schedules, and project treasuries with explicit restrictions. They typically include exchange reserves, coins in active wallets, and staked coins (since stakers can generally unstake and sell, even if with a delay). The result is an approximation rather than a precise number — but a far more meaningful one than total supply for market cap purposes.
Circulating Supply vs. Total Supply vs. Maximum Supply
Three supply metrics define the complete picture of a token’s economics.
Circulating supply — coins publicly available and actively tradeable right now. Used for market cap calculation. Changes over time as locked tokens unlock, new coins are mined or issued, and coins are burned.
Total supply — all coins that have been created to date, including those locked or reserved. Equals circulating supply plus all locked, burned, or reserved coins. For Bitcoin, total supply equals circulating supply because all mined coins are accessible (none are formally locked by protocol).
Maximum supply — the hard cap on the total number of coins that will ever exist, as defined by the protocol. Bitcoin’s maximum supply is 21 million. Some tokens have no maximum supply — Ethereum has no hard cap, with new ETH created through staking rewards. A token with no maximum supply requires confidence in the protocol’s issuance rate remaining reasonable over time.
| Circulating Supply | Total Supply | Maximum Supply | |
|---|---|---|---|
| Definition | Available and tradeable now | All created to date | Protocol hard cap |
| Used for | Market cap calculation | Dilution analysis | Inflation modelling |
| Can it decrease? | Yes — through burns | Yes — through burns | No (hard cap) |
| Bitcoin example | ~19.7 million | ~19.7 million | 21 million |
Why Is Circulating Supply Important for Traders?
Circulating supply determines market cap, and market cap determines where an asset sits in the ecosystem’s hierarchy — which exchanges list it, which institutional mandates can hold it, and how it is compared to peers. A token priced at $0.001 with 1 trillion circulating supply has the same market cap as one priced at $100 with 10 million supply. The price per token is meaningless in isolation; market cap relative to circulating supply is the relevant comparison.
The relationship between circulating supply and total supply reveals future dilution risk. When a large percentage of total supply is locked in vesting schedules, token unlocks create predictable future selling pressure. If a project has 200 million tokens circulating and 800 million locked — with 200 million unlocking over the next 12 months — that represents 100% dilution of the current float. Investors who ignore vesting schedules regularly experience sharp price drops when large unlock events occur, as early investors and team members sell into market liquidity they could not access before.
Fully diluted valuation (FDV) — price multiplied by maximum supply rather than circulating supply — captures the hypothetical market cap if all tokens were in circulation. A token with a $500 million circulating supply market cap but a $5 billion FDV is priced as if the current holders believe the token’s full issuance schedule will be absorbed at current prices — a strong assumption that is often optimistic. Comparing market cap to FDV gives an immediate read on how much dilution is baked into the current price.
Key Takeaways
- Circulating supply is the number of tokens publicly available and tradeable — it excludes locked, vesting, and reserved tokens — and is the denominator in market cap calculations, making it the most relevant supply figure for comparing valuations
- A token with $0.001 price and 1 trillion circulating supply has the same market cap as one with $100 price and 10 million supply — price per token is meaningless without supply context
- When total supply significantly exceeds circulating supply, vesting unlocks create predictable future selling pressure — a project with 200 million circulating tokens and 200 million unlocking over 12 months faces 100% float dilution, a risk that causes sharp price drops at major unlock events
- Fully diluted valuation (FDV = price × maximum supply) captures the hypothetical market cap at full token issuance — comparing market cap to FDV reveals how much future dilution the current price implicitly assumes will be absorbed
- Bitcoin’s circulating supply and total supply are essentially equal (~19.7 million) because all mined coins are accessible — its 21 million maximum supply creates a known, finite inflation trajectory that ends around 2140
Why does circulating supply change over time?
Several mechanisms change circulating supply: new coins mined or issued (increases circulating supply), token burns where coins are permanently destroyed (decreases it), vesting unlocks where previously locked tokens become tradeable (increases it), and coins lost through lost private keys (decreases it in practice though not officially). For most cryptocurrencies, circulating supply increases gradually until the maximum supply is approached.
What is a token burn and how does it affect circulating supply?
A token burn permanently removes coins from circulation by sending them to an unspendable address — one from which no private key can ever retrieve them. Burns reduce circulating supply, which increases each remaining token's proportional share of the total. Some projects burn tokens as a deflationary mechanism to support prices. Ethereum burns a portion of transaction fees with each block through the EIP-1559 mechanism, introduced in August 2021.
Is a lower circulating supply always better for price?
Not necessarily. Low circulating supply relative to total supply means large future unlocks are coming — which is dilutive. The relationship between circulating supply and price depends on demand, utility, lock-up schedules, and the project's fundamentals. A token with a small float can appear to have a low market cap while having a very high FDV — meaning the market is effectively pricing in significant future growth just to maintain current prices at full dilution.
