Team NAK
Team NAK

ERC-20 Token Development on Ethereum: Complete Guide for 2026

What Is an ERC-20 Token?

ERC-20 is the standard interface for fungible tokens on Ethereum. Every major token you have heard of — USDT, LINK, UNI — follows this standard. It defines six mandatory functions (totalSupply, balanceOf, transfer, transferFrom, approve, allowance) that every ERC-20 contract must implement, ensuring all wallets and exchanges can interact with your token without custom integration.

Planning Your Token

Before writing code, decide:

  • Total supply — fixed at mint or mintable over time?
  • Decimals — 18 is standard, matches ETH precision
  • Ownership — who controls minting, pausing, and blacklisting?
  • Tokenomics — team allocation, presale, liquidity pool, vesting schedule

Setting Up with OpenZeppelin

Never write ERC-20 logic from scratch. OpenZeppelin's audited library has handled every edge case. Install it in your Hardhat project: npm install @openzeppelin/contracts

Your contract then imports ERC20, Ownable, and optionally ERC20Burnable or ERC20Pausable depending on your requirements.

Writing the Contract

A production ERC-20 contract extends OpenZeppelin's ERC20 and Ownable. In the constructor, pass the token name and symbol to the parent, then mint the total supply to the deployer address. Add a mint function restricted to the owner if you need inflationary supply later.

Adding Vesting

Team and investor allocations should never be immediately transferable. Use OpenZeppelin's VestingWallet or write a custom vesting contract that locks tokens until a cliff date, then releases them linearly over a vesting period. This protects price from early dumping.

Testing Your Token

Write Hardhat tests that cover: initial supply allocation, transfer between accounts, approval and transferFrom flow, owner-only mint, and pause functionality if included. Run the full suite before any deployment.

Deploying to Mainnet

  • Deploy to Sepolia testnet first and stress-test with real wallets
  • Verify the contract source code on Etherscan — this builds trust with buyers
  • Use a hardware wallet or Gnosis Safe multisig as the owner — never a hot wallet
  • Lock liquidity on Uniswap via Unicrypt or Team Finance immediately after launch
  • Renounce ownership if the token is fully decentralised — this prevents rug accusations

Adding Liquidity on Uniswap

After deployment, pair your token with ETH or USDC on Uniswap v3. The initial liquidity ratio sets the launch price. Add enough ETH to absorb early sell pressure without catastrophic slippage. Announce the Uniswap pool address publicly so buyers can verify they are trading the correct contract.

Post-Launch Checklist

  • Submit to CoinGecko and CoinMarketCap for listing
  • Add token metadata to MetaMask Token List
  • Set up a Dexscreener page with logo and social links
  • Monitor the contract on Etherscan alerts for unusual transfers

Need a Token Launched?

Team NAK handles end-to-end ERC-20 token development: smart contract, vesting, presale contract, Uniswap liquidity setup, and Etherscan verification. Visit theteamnak.com/contact or order on Fiverr at fiverr.com/real_nadirali.