USDC is available on dozens of blockchains, but not all chains are equal for payment processing. Gas fees range from fractions of a cent to over $10. Finality time ranges from sub-second to several minutes. Ecosystem size determines how many of your customers already have wallets on that chain.

Fivo supports USDC payments on 9 EVM blockchains. This guide breaks down each one so you can choose the best fit for your business.

With Fivo's cross-chain bridging via Circle CCTP, your customers can pay from any of the 9 chains regardless of which chain you choose. Your chain choice primarily affects your own withdrawal costs and finality preferences.

1. Polygon (recommended for most merchants)

Type: Layer 2 (PoS sidechain)
Gas per transaction: under $0.01
Finality: 2 to 3 seconds
USDC liquidity: very high
Ecosystem: one of the largest L2s. Used by Starbucks, Nike, Reddit, Aave, Uniswap

Polygon is the best all-around choice for USDC payments. Gas fees are consistently under one cent, making it practical even for micro-payments. The ecosystem is mature with high USDC liquidity, which means your customers likely already have Polygon wallets.

Polygon is Fivo's recommended default chain for new merchants. Lowest fees, fast finality, and the largest user base among L2 networks.

2. Base

Type: Layer 2 (Optimistic rollup, built by Coinbase)
Gas per transaction: under $0.01
Finality: 2 seconds
USDC liquidity: very high (native Circle issuance)
Ecosystem: growing rapidly. Backed by Coinbase, integrated with Coinbase Wallet

Base has grown into one of the most active L2s thanks to Coinbase's backing. Gas fees are comparable to Polygon. A major advantage is that Coinbase Wallet users can move USDC to Base easily, creating a large pool of potential customers. Circle natively issues USDC on Base, ensuring deep liquidity.

Best for: merchants whose customers use Coinbase products, or businesses that want the lowest possible fees alongside strong ecosystem support.

3. Arbitrum

Type: Layer 2 (Optimistic rollup)
Gas per transaction: $0.01 to $0.05
Finality: under 1 second (soft), 7 days (full rollup)
USDC liquidity: very high
Ecosystem: largest L2 by TVL (Total Value Locked). Home to GMX, Aave, Uniswap, Pendle

Arbitrum is the largest Layer 2 by total value locked, meaning more capital and users are on Arbitrum than any other L2. Gas fees are slightly higher than Polygon or Base but still very low. If your customers are active in DeFi, many of them already hold USDC on Arbitrum.

Best for: merchants targeting crypto-native users and DeFi participants who likely already have assets on Arbitrum.

4. Optimism

Type: Layer 2 (Optimistic rollup, part of the Superchain)
Gas per transaction: $0.01 to $0.05
Finality: 2 seconds (soft), 7 days (full rollup)
USDC liquidity: high
Ecosystem: Superchain (Base, Zora, Mode are all built on the OP Stack). Home to Velodrome, Synthetix

Optimism pioneered the Superchain concept, a network of L2s sharing the same technology stack. Base itself is built on the OP Stack. Gas fees are similar to Arbitrum. Optimism has a strong developer community and governance system (the Optimism Collective).

Best for: merchants who want to be on the same technology stack as Base while accessing Optimism's native user base.

5. Avalanche

Type: Layer 1
Gas per transaction: $0.02 to $0.10
Finality: under 1 second (sub-second finality is Avalanche's key feature)
USDC liquidity: high (native Circle issuance)
Ecosystem: strong institutional adoption. Used by Deloitte, Spruce, Shopify (tokenized commerce). Home to Trader Joe, Benqi

Avalanche stands out for its sub-second finality, which means transactions are irreversible almost instantly. This is valuable for point-of-sale scenarios or any use case where instant confirmation matters. Gas fees are slightly higher than L2s but still very reasonable.

Best for: merchants who need instant finality (physical retail, point-of-sale) or who serve customers in the Avalanche ecosystem. Also supports EURC.

6. Ethereum

Type: Layer 1 (the original smart contract blockchain)
Gas per transaction: $1 to $10+ (highly variable)
Finality: 12 to 15 minutes (full finality)
USDC liquidity: highest of any chain
Ecosystem: the largest blockchain ecosystem. Every major DeFi protocol, NFT marketplace, and dApp is on Ethereum

Ethereum has the highest USDC liquidity and the largest user base, but gas fees make it impractical for small payments. A $5 coffee payment with $3 gas does not make sense. However, for high-value transactions ($1,000+), the gas fee becomes a small percentage and Ethereum's security and liquidity are unmatched.

Best for: high-value B2B transactions, large invoices, or merchants whose customers specifically request Ethereum. Not recommended for small consumer payments.

7. Linea

Type: Layer 2 (zkEVM rollup, built by Consensys/MetaMask)
Gas per transaction: under $0.01
Finality: 2 to 3 seconds
USDC liquidity: moderate (growing)
Ecosystem: backed by Consensys (creators of MetaMask). Native integration with MetaMask

Linea's biggest advantage is its deep integration with MetaMask, the most popular EVM wallet with over 30 million users. Gas fees are extremely low. The ecosystem is still growing, but MetaMask integration provides built-in distribution.

Best for: merchants whose customers primarily use MetaMask. The native MetaMask integration makes Linea frictionless for these users.

8. Unichain

Type: Layer 2 (Optimistic rollup, built by Uniswap Labs)
Gas per transaction: under $0.01
Finality: 1 second
USDC liquidity: moderate
Ecosystem: built by Uniswap Labs. Optimized for DeFi and token trading

Unichain is Uniswap Labs' own L2, designed for fast and cheap token transactions. It is the newest chain on this list. USDC liquidity is growing as the ecosystem matures. One-second finality makes it competitive with the fastest L2s.

Best for: merchants targeting Uniswap users and DeFi-native customers. Early adopter advantage as the chain grows.

9. Sonic

Type: Layer 1 (formerly Fantom)
Gas per transaction: $0.01 to $0.05
Finality: 1 second
USDC liquidity: moderate
Ecosystem: rebranded from Fantom. Home to SpookySwap, Beets. Growing developer incentive program

Sonic (formerly Fantom) relaunched with improved throughput and a generous developer incentive program. Gas fees are low and finality is fast. The ecosystem is rebuilding after the rebrand, with growing USDC adoption.

Best for: merchants who want early presence on a growing L1 with fast finality and low costs.

Comparison summary

Chain comparison for USDC payments

Chain        Type   Gas         Finality    USDC Liquidity   EURC
──────────────────────────────────────────────────────────────────────
Polygon      L2     < $0.01     2-3 sec     Very High         No
Base         L2     < $0.01     2 sec       Very High         Yes
Arbitrum     L2     $0.01-0.05  < 1 sec     Very High         No
Optimism     L2     $0.01-0.05  2 sec       High              No
Avalanche    L1     $0.02-0.10  < 1 sec     High              Yes
Linea        L2     < $0.01     2-3 sec     Moderate          No
Unichain     L2     < $0.01     1 sec       Moderate          No
Sonic        L1     $0.01-0.05  1 sec       Moderate          No
Ethereum     L1     $1-10+      12-15 min   Highest           Yes

Quick recommendations

Lowest cost for customers: Polygon, Base, or Linea (gas under $0.01)
Largest user base: Ethereum (but expensive), Polygon, or Base
Fastest finality: Avalanche or Arbitrum (sub-second)
Best for euro payments (EURC): Base or Avalanche
High-value transactions ($1K+): Ethereum (gas becomes negligible at this scale)
MetaMask users: Linea (native integration)
Coinbase users: Base (native integration)
DeFi-native customers: Arbitrum (largest L2 by TVL)
Best overall for new merchants: Polygon or Base

Remember: cross-chain makes your choice flexible

The most important thing to understand is that your chain choice does not limit your customers. Fivo's cross-chain bridging via Circle CCTP means a customer on Arbitrum can pay a merchant on Polygon seamlessly. The widget detects the chain mismatch and handles the bridge automatically.

This means you should choose your chain based on your preferences (withdrawal costs, ecosystem, finality), not your customers'. They can pay from any of the 9 chains.

The bottom line

For most merchants, Polygon or Base is the best starting point: sub-cent gas fees, high USDC liquidity, and large ecosystems. If you need EURC support, choose Base or Avalanche. If you process high-value transactions, Ethereum's unmatched liquidity and security are worth the higher gas.

Whatever chain you choose, Fivo gives your customers access to all 9 networks through automatic cross-chain bridging. Create your free account and start accepting USDC on any chain.

9 Blockchains for USDC Payments: Which Chain Is Best for Your Business?