Cryptocurrency swap fees and exchange rates: start from the estimated arrival
When comparing swaps, first fix the currencies, both networks, sending amount, and mode. Record the current estimated arrival for FeilongEX, then check the external fees of the sending wallet or withdrawal platform; historical samples are for understanding the fields and cannot replace the current quote.
Start from your current question
- 01
Want to compare the result of the same swap
First fix the asset, both networks, amount, and mode, then compare the estimated arrival and current limits. Do not combine USDT on different networks into the same quote.
Compare quotes using the same set of parameters ↗ - 02
Want to see time-stamped actual response samples
View 9 same-day read-only records, distinguishing floating, fixed, minimum amount, and missing fields; the samples did not create orders or move funds.
View quote observations and methodology ↗ - 03
Have USDT but cannot send it from the wallet
First confirm the network the asset is on and the resource the wallet says is missing. The balance, sending Gas, and the order minimum amount are three different checks.
Check ETH, TRX, and the sending fee ↗ - 04
The quote or order shows as expired
First distinguish between not yet created, created but unpaid, and funds already sent. A new quote cannot change a transaction already sent.
Distinguish between quote and payment deadlines ↗
The complete guide to Fees and exchange rates
Check the glossary first ↗How to observe USDT exchange quotes? 9 same-day samples and reading method
2026-09-10 — View the 9 read-only quote samples, understand how sending network, receiving network, floating and fixed modes are recorded separately, and what these data cannot prove.
Read the guide 02How is the actual arrival of a cryptocurrency exchange calculated? Fee and minimum amount verification
Distinguish the current estimated arrival, the order's actual deposit, the separately paid sending-side fee, and the actual outgoing transfer; verify the minimum amount, maximum limit, and fixed or floating rate for No KYC exchange.
Read the guide X VS Y · Comparison guides03Floating and fixed rates: understanding quotes and payment deadlines
Compare the floating and fixed quotes actually returned, and understand the conditions for locking an amount. Includes historical query records for the same route, distinguishing quote creation time, order payment deadline, and arrival time.
Read the guide 04Wallet has USDT but cannot send? First check ETH, TRX, and network resources
USDT balance is sufficient but it says the fee is insufficient? Distinguish Ethereum's ETH Gas, TRON's bandwidth and energy, and understand wallet fee deductions and the conditions to check before exchange deposits.
Read the guide 05What to do if a fixed rate prompt expires? Distinguish quote expiration from order payment deadline
Understand the difference between the fixed quote validity period and the order payment deadline, and handle the cases of not yet created, created but not sent, and funds already sent separately.
Read the guide X VS Y · Comparison guides06How to compare two quotes for the same exchange? First fix the parameters, then look at estimated receipt
Compare exchange quotes using the same asset, network, amount, and mode. Attach two actual FeilongEX query records and separately verify estimated receipt, external fees, quote validity period, and conclusions that cannot be drawn.
Read the guide 07How to apply for a cryptocurrency exchange fee refund? Calculation, address, and status
Use the FeilongEX exchange number to apply for a fee refund, verify the calculation basis for the actual fee or campaign subsidy, the USDT Ethereum address, and the application status, and distinguish refunds from coin returns.
Read the guideExchange routes covered in the article
All routes ↗Swap USDT TRC20 for TRX: no-registration TRON swaps and actual arrival
View routes and quotesSwap USDT (ERC20) for ETH: Ethereum mainnet swap and fees
View routes and quotesWhether a route is available, amount requirements, and estimated receipt remain subject to the current quote and order.