Disclosure: It is not financial advice
The 1 USDT versus 10 USDT withdrawal fee can look like the whole decision. In my view, it is not.
Official BiyaPay Help Center examples put the on-chain fee for USDT at 1 USDT on TRC20 and 10 USDT on ERC20. That is a 9 USDT gap, and it is easy to treat the cheaper figure as the default. The same Help Center also says that if the network does not match the receiving side, or if a required MEMO or tag is missing, the currency will be lost.
This is not a recommendation to withdraw. It is my reading of those official pages, and of which mistake actually costs more once you run the numbers.
The fee gap is real. The loss from a mismatch is larger.
Take the official examples first, and treat them as examples, because the Help Center notes that on-chain fees can change with network congestion.
On a 50 USDT withdrawal, a 1 USDT TRC20 fee is 2 percent of the amount. A 10 USDT ERC20 fee is 20 percent.
On 100 USDT, the same fees are 1 percent and 10 percent. On 1,000 USDT, they are 0.1 percent and 1 percent.
The 9 USDT difference does not grow with the size of the transfer, in these examples. The percentage shrinks as the amount gets larger, which makes the fee look cheaper, but a smaller percentage does not make the network choice safer.
If the receiving wallet or exchange only accepts USDT on ERC20, and the withdrawal is sent on TRC20 to "save" 9 USDT, the Help Center's wording is not that you pay a higher fee. It is that the currency will be lost. On a 1,000 USDT withdrawal, that is the entire 1,000, not the 9 you were trying to keep.
That is why, in my view, the most expensive withdrawal mistake is not paying the higher network fee. It is treating the cheaper network as a default before checking what the receiving side actually supports.
When paying the higher fee is the right call, and when it is not
If the receiving side supports both TRC20 and ERC20, I would pick the cheaper network it officially lists, after opening its deposit page and reading the network it shows. In the Help Center examples, that would be TRC20 at 1 USDT rather than ERC20 at 10 USDT.
If it only lists ERC20, I would pay the 10 USDT example fee, or I would not send, rather than choose TRC20 because it is cheaper. The 9 USDT "saving" is not a saving if the funds do not arrive.
The order matters. I would let the receiving side tell me the network first, for example TRC20 or ERC20, and only then choose the exact same network on BiyaPay's On-chain Withdrawal page. The Help Center's own example is USDT-TRC20 on both sides, and it says the two networks must be consistent.
A MEMO is not a fee problem. It is the same kind of total-loss problem.
The Help Center gives XRP and EOS as examples of coins that need more than an address. A label (MEMO) is shown above the withdrawal address, usually a string of numbers, and you must fill in both the address and the label, otherwise the currency will be lost.
There is no 1 USDT or 10 USDT figure attached to a missing MEMO. The official cost is the whole transfer. I would copy the MEMO, tag, or similar field at the same time as the address and treat both as one unit. If the receiving side shows a MEMO and I do not have it, I would not submit.
A cheaper route exists, but only for a different destination.
The Help Center lists three withdrawal methods: on-chain withdrawal, for sending cryptocurrency to an external wallet or exchange; fiat remittance, for sending fiat currency out to a bank account; and email account transfer, for moving funds to another BiyaPay account using its registered email.
If the person I am paying also uses BiyaPay and the transfer is fiat, an email account transfer may make more sense than going on-chain. The Help Center states there is no handling fee for transferring fiat currency between BiyaPay wallets through a registered email. Next to a 1 USDT or 10 USDT on-chain fee, that is a different cost entirely. It only applies to that route, and only to fiat between BiyaPay wallets. It is not a reason to skip the network check on an on-chain withdrawal to an outside wallet.
I would also check the minimum withdrawal amount on the day itself, on the On-chain Withdrawal page. Minimums differ by currency and by protocol, and they can change with the coin price or network congestion. A small withdrawal and a large one are not the same decision: 10 USDT is 20 percent of 50 USDT, and only 1 percent of 1,000 USDT. I would look at that percentage and at the live minimum together, and I would not assume the 1 USDT TRC20 example applies to a destination that does not support TRC20.
A second withdrawal, sent too early, can double the cost.
The official web flow asks you to check the address and amount again before Submit, then enter an email verification code or a Biya verification code. I would treat that code step as a last checkpoint, not a formality. If the network, the MEMO, or the amount feels off, that is the time to stop.
The Help Center says a crypto withdrawal goes through a review that takes from a few minutes to half an hour, and the arrival time after approval depends on the protocol and network congestion. If a withdrawal is pending for more than 30 minutes, it says you should contact support.
In my view, a withdrawal that has been pending for ten minutes is not a reason to submit a second one. On a 100 USDT send, a duplicate would not be a 1 USDT or 10 USDT question. It would be another 100 USDT, plus another fee, sitting in a window the Help Center describes as normal. Past 30 minutes, I would contact support through the official channels on the BiyaPay site, and I would not send a duplicate in the meantime.
Support for a coin or network can change, so I would treat the app screen on the day as the source of truth. BiyaPay says it supports withdrawal of over 200 cryptocurrencies including USDT, subject to what the app displays or what customer service announces.
What I would actually do
My takeaway is simple. I would rather pay the higher official fee on a network the receiver supports than try to keep 9 USDT on a network it does not. The fee in the Help Center examples is visible and bounded: 1 USDT or 10 USDT, subject to change with congestion. A mismatch or a missing MEMO is described as a loss of the currency itself.
A short list I would keep in front of me:
Decide the route first: on-chain, fiat remittance, or email transfer. Fiat between BiyaPay wallets via registered email has no handling fee.Let the receiving side tell you the network, then match it exactly. Only compare fees among networks that side supports.Copy any MEMO or tag together with the address. No MEMO, no submit.Check the current minimum and the live fee on the On-chain Withdrawal page, and look at the fee as a percentage of this amount, not only as a flat number.Re-check address and amount, then complete the verification code step.Expect review of a few minutes up to about 30 minutes. Contact support if it goes longer, and do not submit a second withdrawal while the first is still inside that window.
None of this is a recommendation to withdraw. Official fees, minimums, and supported networks can change. I would re-read the Help Center and the withdrawal page in the app before sending.
Source: BiyaPay Help Center, Withdrawal and Wallet sections, checked on November 9, 2026.
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