You've decided your project genuinely needs a smart contract. The first question after that: which chain? In India in 2026, the practical answer is almost always Ethereum or Polygon. Here's the developer's honest comparison.
What's the same
- Both are EVM-compatible — same Solidity language, same tooling (Hardhat, Foundry).
- Both support ERC-20 tokens, ERC-721 NFTs, smart-contract wallets.
- Both have mature audit firms and security tooling.
- Same threat model for typical smart-contract vulnerabilities (reentrancy, integer overflow, access control).
What's different
Gas fees
Ethereum mainnet transactions cost ₹100–₹5,000 each depending on network congestion. Polygon transactions cost ₹0.10–₹5 each.
If your application requires more than a few transactions per user, Polygon's cost structure is the only viable choice.
Finality and trust
Ethereum mainnet has the strongest decentralisation guarantees. Polygon's POS chain is more centralised — fewer validators, faster but less battle-tested under attack.
For high-value primitives where billions of dollars are at stake (major DeFi protocols, large NFT collections), Ethereum is still the default. For everyday business logic, Polygon is sufficient.
Tooling maturity
Both have excellent tooling, but Ethereum's ecosystem is broader. Some specialty tools work on Ethereum first and Polygon "soon".
Wallet support
Both work with MetaMask, WalletConnect, Coinbase Wallet, Rainbow. Adding Polygon network is one click but a small UX friction for first-time users.
Bridge complexity
Moving assets between Polygon and Ethereum mainnet requires a bridge. Bridges have historically been the most-attacked surface in Web3. Reduce bridge usage where possible.
When to pick Ethereum mainnet
- Maximum trust required (high-value assets).
- Audience expects "real" Ethereum addresses.
- Composability with other major mainnet protocols.
- Token issuance for serious listings.
- Gas fees are an acceptable cost given the transaction value.
When to pick Polygon
- Per-user transaction count is more than 10/month.
- Average transaction value is under ₹5,000.
- Onboarding non-crypto-native users.
- Gaming, loyalty, micropayments.
- Indian users (Polygon's marketing has resulted in better awareness).
When to consider other chains
- Arbitrum / Optimism (L2s): better decentralisation than Polygon POS, similar costs. Good for serious DeFi work.
- Solana: high performance, different programming model (Rust), younger ecosystem.
- Base: Coinbase-backed L2, growing fast, good UX.
- Private chains (Hyperledger): for closed consortium use cases where no public verification is needed.
The Excellence default
For 80% of our Indian client work, Polygon POS is the default. We typically deploy on Polygon, with the contract designed to be redeployable on Ethereum mainnet if a use case proves itself.
Security checklist (applies to both)
- Mandatory audit by a reputable firm before mainnet deployment.
- Use battle-tested OpenZeppelin libraries; don't roll your own.
- Implement timelocks on admin functions.
- Use multisig wallets (Gnosis Safe) for owner controls.
- Test extensively on testnet (Sepolia for Ethereum, Mumbai for Polygon).
- Set up monitoring (Tenderly, Forta) for unusual contract activity.
What we cost
At Excellence Web Services, a basic smart contract (token, simple voting, certificate registry) costs ₹1,00,000–₹3,00,000 for development. Audit is additional (we work with audit partners). Complex DeFi protocols: ₹6,00,000–₹20,00,000+.
If you're sizing up a smart-contract project, our blockchain team would love to chat.