TRC-20 and ERC-20 are technical standards for tokens on two different blockchains: TRC-20 tokens live on the Tron network, ERC-20 tokens live on Ethereum. A token like USDT can be issued on both, and on other networks besides, which means the same dollar-pegged token exists as several separate versions, each tied to its own blockchain.
The practical difference for a freelancer is mostly cost and speed. Tron network transfers are typically cheap and confirm within a couple of minutes, which is why TRC-20 is a common default for USDT payouts. Ethereum network fees, known as gas, fluctuate with network demand and have historically been higher than Tron's, though confirmation times are also usually fast; BEP-20, on BNB Smart Chain, tends to sit closer to Tron in cost.
None of these networks are interchangeable at the wallet level. A wallet address generated for receiving TRC-20 tokens is not the same kind of address as one set up for ERC-20, and sending a token on a network the receiving wallet or exchange does not support typically means the transfer cannot be credited and, in many cases, cannot be recovered. Before sending, the network has to match what the receiving side actually expects, not just the token name.
When PANORAMA payments pays a vendor in USDT, it asks which network to use precisely because of this mismatch risk, and it supports TRC-20, ERC-20, BEP-20, TON and Solana so the freelancer can choose whichever their own wallet or exchange actually accepts. The payout calculator breaks down the fee by network, which is worth checking before picking one, since the cheaper network is not always the one a given wallet supports.
What happens if I send USDT on the wrong network?
In most cases the transfer cannot be credited to the receiving wallet, and depending on the exchange or wallet involved, the funds can be difficult or impossible to recover. It is worth confirming the network before sending, not after.
Which network is cheaper, TRC-20 or ERC-20?
TRC-20, on the Tron network, is typically cheaper than ERC-20 on Ethereum, where fees rise and fall with network demand. Cost should not be the only factor, though, since the receiving wallet has to support whichever network is chosen.
How do I know which network my wallet or exchange expects?
The wallet or exchange interface will usually name the network directly next to the deposit address, often labeled TRC-20, ERC-20, BEP-20 or similar. When in doubt, a small test transfer before sending the full amount is a reasonable precaution.