# Stablecoin market cap: supply times price, not a reserve audit

The stablecoin market-cap measure used here multiplies a defined circulating supply by an observed market price. It is a valuation calculation, not a reserve audit or a measure of immediately redeemable cash. Results depend on supply scope, pricing time and how bridged or issuer-held tokens are treated.

Evidence: [ERC-20 Token Standard](https://eips.ethereum.org/EIPS/eip-20); [Tether Transparency](https://tether.to/en/transparency/); [Transparency and Stability](https://www.circle.com/transparency)

Canonical: https://degreesofsatoshi.com/encyclopedia/stablecoin-market-cap/
Published: 2026-10-02
Substantively modified: 2026-10-02
Independently verified by an automated reviewer: 2026-10-02T18:15:23.891Z
Data current through: 2026-10-02

AI-assisted research and drafting with a separate automated source-verification pass; no external expert or named human review is implied.

## Key facts

- **Formula:** The measure defined here is circulating units × observed price per unit. ([ERC-20 Token Standard](https://eips.ethereum.org/EIPS/eip-20); [Tether Transparency](https://tether.to/en/transparency/))
- **Supply scope:** A contract’s totalSupply is not automatically a provider’s circulating-supply definition. ([ERC-20 Token Standard](https://eips.ethereum.org/EIPS/eip-20); [Tether Transparency](https://tether.to/en/transparency/))
- **Reserves:** Reserve composition and assurance require separate issuer evidence. ([Transparency and Stability](https://www.circle.com/transparency))

## Separate units from dollars

For an illustrative supply of 1,000,000 tokens trading at $0.98, this market-cap measure is $980,000. The token count remains 1,000,000. A target peg of $1 does not make the observed price $1 by definition.

This is a worked calculation with invented inputs, not a current supply or price observation.

Evidence: [ERC-20 Token Standard](https://eips.ethereum.org/EIPS/eip-20)

## Avoid counting the same economic claim twice

Multi-chain issuance, burns and bridged representations need a consistent scope. Summing a backing token and a wrapper that represents a claim on the same token can double-count economic exposure.

Record whether the figure includes issuer inventory, bridge-held balances or only a provider’s defined circulating units. Publish the definition alongside the value.

Evidence: [CCTP overview](https://developers.circle.com/cctp); [Tether Transparency](https://tether.to/en/transparency/)

## A large total does not establish liquidity or safety

Market capitalization does not reveal how much can be sold at the quoted price or redeemed by a particular holder. Those questions involve order-book or pool depth, issuer eligibility and reserve operations.

Compare figures only when their observation times and supply definitions are compatible. A fresh market price multiplied by an old supply snapshot mixes dates.

Evidence: [Transparency and Stability](https://www.circle.com/transparency); [USDC Terms](https://www.circle.com/legal/usdc-terms)

## Questions

### Is stablecoin market cap the same as money in its bank accounts?

No. It is a supply-and-price calculation. Issuer reserves may include several asset categories and require separate dated disclosures and assurance.

Evidence: [Transparency and Stability](https://www.circle.com/transparency); [Tether Transparency](https://tether.to/en/transparency/)

## Claims and scope

### stablecoin-market-cap-quick-answer

The stablecoin market-cap measure used here multiplies a defined circulating supply by an observed market price. It is a valuation calculation, not a reserve audit or a measure of immediately redeemable cash. Results depend on supply scope, pricing time and how bridged or issuer-held tokens are treated.

Scope: {"collection":"stablecoins","dataAsOf":"2026-10-02","blockHeight":null}

### stablecoin-market-cap-fact-formula

Formula: The measure defined here is circulating units × observed price per unit.

Scope: {"collection":"stablecoins","dataAsOf":"2026-10-02","blockHeight":null}

### stablecoin-market-cap-fact-supply-scope

Supply scope: A contract’s totalSupply is not automatically a provider’s circulating-supply definition.

Scope: {"collection":"stablecoins","dataAsOf":"2026-10-02","blockHeight":null}

### stablecoin-market-cap-fact-reserves

Reserves: Reserve composition and assurance require separate issuer evidence.

Scope: {"collection":"stablecoins","dataAsOf":"2026-10-02","blockHeight":null}

## Sources

- [ERC-20 Token Standard](https://eips.ethereum.org/EIPS/eip-20) — Ethereum Improvement Proposals. Token supply, displayed units and balance accounting. Locator: totalSupply; balanceOf; transfer; decimals; approve; allowance; transferFrom; Transfer. Retrieved: 2026-10-02T17:03:45.826Z.
- [Tether Transparency](https://tether.to/en/transparency/) — Tether. Issuer supply and reserve disclosures are distinct from market capitalization. Locator: Reports; Tokens in circulation; Reserves. Retrieved: 2026-10-02T17:03:43.602Z.
- [Transparency and Stability](https://www.circle.com/transparency) — Circle. Issuer-disclosed backing, separate reserve funds and assurance report scope. Locator: Reserves composition; Monthly assurance and transparency. Retrieved: 2026-10-02T17:03:43.181Z.
- [CCTP overview](https://developers.circle.com/cctp) — Circle. Native USDC transfer uses source-chain burning, Circle attestation and destination minting. Locator: How CCTP works; Burn and mint. Retrieved: 2026-10-02T17:03:43.290Z.
- [USDC Terms](https://www.circle.com/legal/usdc-terms) — Circle. Non-EEA USDC holder terms, eligibility, redemption and restrictions; not an unconditional promise to every holder. Locator: Sections 1–4, 8, 13, 15–17. Retrieved: 2026-10-02T17:03:43.080Z.

## Revision history

- 2026-10-02: First publication after primary-source research and independent automated verification.

## Cite this entry

Degrees of Satoshi editorial project. “Stablecoin market cap: supply times price, not a reserve audit.” Published 2026-10-02; updated 2026-10-02. https://degreesofsatoshi.com/encyclopedia/stablecoin-market-cap/