USD Coin vs PayPal USD โ side-by-side comparison of supply, chains, backing, and peg data.
Supply moved almost identically over the last 30 days: USDC -1.6%, PYUSD -2.4%. Both held within about 5 bps of target across the same window.
| Metric | USDC | PYUSD |
|---|---|---|
| USD circulation value | $72.21B | $2.78B |
| Rank (by USD value) | #2 | #9 |
| Peg | USD | USD |
| Mechanism | fiat-backed | fiat-backed |
| Backing | Cash & T-bills | Cash & T-bills (PayPal) |
| Chains deployed | 154 | 19 |
| Primary chain | Ethereum | Ethereum |
| Issuer | Circle | Paxos Trust Company (for PayPal) |
| CoinGecko | View โ | View โ |
Both track USD, so they compete for the same use cases. USDC holds cash & t-bills; PYUSD holds cash & t-bills (paypal). USDC ranks #2 by USD value and PYUSD ranks #9.
USDC is larger, with $72.21B in circulation vs $2.78B for PYUSD. That's roughly 26.0ร the size.
Neither is inherently safer. Safety turns on reserve composition, issuer transparency, redemption rights and regulatory oversight โ none of which this page audits. Both use a fiat-backed model, so the difference sits in the issuer and the reserves rather than the design. Read each issuer's most recent reserve attestation before choosing.
Yes. USDC and PYUSD both trade on major centralized and decentralized exchanges. Since both track USD, the exchange rate is typically very close to 1:1. Direct swap protocols on Ethereum, Solana, and other chains offer the tightest spreads.
The right choice depends on your use case. Consider: which chain do you need? USDC is available on 154 chains and PYUSD on 19. What backing do you prefer? What's your integration surface (exchanges, DeFi protocols, payment providers)? Both have deep liquidity, so market cap alone shouldn't decide it.