01A floating quote is a current estimate
In floating rate mode, the estimated arrival amount shown on the page is affected by market prices, network fees, and actual exchange conditions. There is a time gap between querying a quote and funds entering the processing flow, so the final amount may be higher or lower than the initially displayed value, and the estimate cannot be regarded as a locked result.
资料依据：FeilongEX: common questions about floating and fixed rates ↗FeilongEX: method for comparing quotes under the same conditions ↗
02A fixed quote requires meeting order conditions
A fixed rate is used to lock a quote, but you need to operate according to the payment requirements of a valid order. Before creating, check the sending amount, receiving coin, and network; after creating, confirm the actual payment deadline. Fixed and floating mode quotes may differ, and results at the same time and for the same amount should be compared.
资料依据：FeilongEX: Explanation of current quote and order fields ↗FeilongEX: method for comparing quotes under the same conditions ↗
03Distinguish the two validity periods
The quote validity period determines whether this fixed quote can still be used to create an order; the order payment deadline determines when funds should be sent as required. The two cannot be mixed up. If you stay for a long time without creating an order, you should get a new quote; if an order has already been created, the deadline shown for this order applies, and a uniform number of minutes should not be applied.
资料依据：FeilongEX: Explanation of current quote and order fields ↗
04Choose according to your readiness to act
If the receiving address and sending wallet are ready, and you want to reduce uncertainty about the arrival amount, you can check whether fixed mode is available. If you still need to withdraw from another platform or verify information, complete the preparation first before creating an order. When choosing floating mode, you should confirm that you can accept changes in the estimated amount.
资料依据：FeilongEX: Explanation of current quote and order fields ↗FeilongEX: method for comparing quotes under the same conditions ↗
05Check the order once more before paying
Check the current rate mode, sending amount, networks on both ends, this order's deposit address, and the required Memo／Tag. If the order has passed its payment deadline, do not continue paying to the old address. After confirming that no funds have been sent, check the new exchange conditions; if funds have been sent or the sending status is unclear, keep the original order number and transaction hash, check progress in the original browser, and follow the help path on the order page. For specific steps, see Guide to handling expired fixed-rate orders.
资料依据：FeilongEX: Explanation of current quote and order fields ↗
06For the same amount, what did floating and fixed each return?
On 2026-9-10, we used the local FeilongEX quote interface to request floating and fixed modes separately for 100 USDT Ethereum → Bitcoin BTC. The modes actually returned by the two requests matched the requests. The table records historical estimates; no order was created and no actual fund exchange was verified.
This time the fixed estimated received amount is less than the floating one, which only describes the responses at these two points in time. It cannot be inferred that the fixed mode is lower for every route, nor can it be assumed that a higher floating estimate guarantees final receipt. The conditions of the two differ, and the choice should be made based on readiness.
The availability period of the FeilongEX page is also subject to the countdown of this quote and may end earlier than the validity period returned by the quote API. This record did not capture the availability deadline of the FeilongEX page, so the creation window available at the time cannot be reconstructed from the deadline shown in the table.
This table can scroll horizontally.
| Record field | Floating query | Fixed query |
|---|---|---|
| Query completion time | 2026-09-10 12:02:23.803 UTC | 2026-09-10 12:02:24.221 UTC |
| Send amount and network | 100 USDT · Ethereum | 100 USDT · Ethereum |
| Receiving asset and network | BTC · Bitcoin | BTC · Bitcoin |
| Actual return mode | standard | fixed-rate |
| Estimated to receive | 0.0012673 BTC | 0.0012608 BTC |
| The lock deadline returned by the quote API | No lock-in validity period was returned | 2026-09-10 12:04:22.975 UTC |
| Order payment deadline | No order was created and none was obtained | No order was created and none was obtained |
资料依据：FeilongEX: Explanation of current quote and order fields ↗FeilongEX: method for comparing quotes under the same conditions ↗FeilongEX: data and observation methods ↗FeilongEX: 2026-09-10 anonymized quote observation data ↗
07Two readiness states, different selection priorities
Scenario one: The receiving address has been confirmed, and the sending wallet's fee and amount are ready. You can compare the currently returned fixed quote and its conditions, create the order when the quote is available, and then proceed according to this order's payment deadline. Fixed mode does not guarantee network confirmation speed.
Scenario two: You still need to wait for an external platform's withdrawal review, or you have not yet confirmed the receiving network. Complete preparations first, then query the mode and quote; do not treat the external platform's estimated processing time as proof that a fixed quote has already been locked. Floating mode also does not mean you can pay to an old address indefinitely.
These two scenarios are used to explain the selection method; they are not trading advice, nor do they mean that all routes support both modes at the same time. Compare only quotes that are actually returned and still valid; when there is no second quote, do not infer its price.
资料依据：FeilongEX: Explanation of current quote and order fields ↗FeilongEX: method for comparing quotes under the same conditions ↗FeilongEX: current terms of service ↗
08Why not apply the minutes from one help article to all orders
Different materials may describe the exchange process and deadlines inconsistently. Before paying, the current quote from FeilongEX and the conditions shown for this order should govern; this article will not generalize any value from historical materials as a uniform deadline for all FeilongEX orders.
You should verify both the actual requirements of this order and the applicable terms; if anything is unclear or conflicting, first verify through FeilongEX order help before paying. The creation validity period in a quote response is not the order payment deadline, and refreshing the page will not extend an established payment requirement.
For expired or already paid situations, verify according to the fixed order expiration guide; if you only want to compare two quotes in the same mode, you can read the quote comparison method.
资料依据：FeilongEX: method for comparing quotes under the same conditions ↗FeilongEX: current terms of service ↗
FAQ
Is a fixed rate necessarily better than a floating rate?
Not necessarily. The two modes may give different quotes; you should compare the current estimated arrival amount.
Does a fixed rate mean a fixed arrival time?
No. Rate locking and network confirmations and exchange processing time are different matters.
Do all exchange routes have a fixed mode?
Not necessarily. Whether it is available must be based on the quote returned by this query.