A purchase can fill the requested quantity while crediting fewer units if commission is deducted from the acquired asset. Other differences can come from partial execution or reservations. Trace the order, fee entries and balance movements separately, then calculate unit cost using the actual net quantity without counting the same fee twice.
The whole difference is not one commission. The example assumes no previous holdings or other movements.
BTKWIN.COM · EDUCATIONAL EXAMPLEUse a different record for each question
The requested quantity is what you submitted. Executed quantity is what the market actually matched. Net quantity accounts for deductions from that asset, while available quantity can be lower because a separate instruction or account restriction reserves part of what you still hold. The word balance alone does not explain all four.
In our hypothetical sequence, ten units were requested, eight filled, 0.08 was deducted as an asset-denominated fee and two remaining units were reserved by another sell order. The resulting 5.92 available units do not imply a 4.08-unit commission. Two were never bought, 0.08 was charged and two are still owned but reserved.
| Quantity | Example amount | Evidence to inspect |
|---|---|---|
| Requested | 10 | Order details |
| Executed | 8 | Unique fills |
| Net credited | 7.92 | Actual fee and ledger entries |
| Available | 5.92 | Current reservations and balance |
The Kraken comparison of trade and ledger history distinguishes a fee estimate in trading records from actual deductions and their currencies. Use the appropriate record for the question. A quote-currency estimate does not by itself establish which asset was debited.
Example one: spend 1,000 and receive 9.9
Assume ten units execute at 100 each, costing 1,000 quote-currency units. A hypothetical commission deducts 0.1 units of the purchased asset, with no other charges. Net receipt is 9.9 and cash spending remains 1,000. The cost per net unit is therefore 1,000 ÷ 9.9, approximately 101.0101.
The raw average execution price is still 100 per gross unit. The higher cost per net unit comes from receiving fewer units for the same spending; no additional market-price change is needed to explain it. Label these two measures rather than choosing one and silently comparing it with the other.
Do not add another 10 to the spending numerator as a cash fee and then divide by 9.9 in this example. That would count the asset commission through both a reduced denominator and an extra cash payment that did not occur. You may separately report the fee’s estimated value, but keep the chosen cost definition consistent.
Example two: the fee is paid in quote currency
Keep the gross purchase at ten units for 1,000, but now assume a separate fee of 10 quote-currency units and receipt of all ten asset units. Total spending becomes 1,010 and cost per unit is 101. The asset quantity stays ten; do not subtract a hypothetical token amount simply because ten quote units could be converted into one.
These examples differ in both cash left and asset quantity held. Spending 1,000 for 9.9 is not the same balance outcome as spending 1,010 for ten. Both increase inclusive cost above the raw price, but a fair comparison must preserve the actual debits and credits rather than treating similar-looking fee values as interchangeable.
The Kraken trading-fee guide explains its fee framework and currency options. Read the actual deduction because a stored preference does not establish the outcome in every circumstance. Our fee amounts are illustrative and do not represent a current account rate.
Example three: commission uses a third asset
Suppose ten units cost 1,000 quote units while a fee debits 0.02 units of another asset already held. If a documented conversion at the fee time values that asset at 200 quote units per unit, the fee’s equivalent value is 4. An economic cost calculation using that conversion is 1,004 overall, or 100.4 per acquired unit.
Retain the original 0.02 amount, fee asset, timestamp and price source alongside the converted value. Otherwise you lose the record of what actually left the account. A later price change does not silently rewrite the historical conversion. A current replacement-cost estimate can be useful, but it needs a separate label and assumptions.
Discount eligibility can also depend on account, symbol and the applicable commission components. The Binance commission FAQ provides a product-specific explanation. Verify current account data rather than importing a promotional rate or assuming that a discount covers every charge.
Aggregate fills without adding incompatible units
An order filled in quantities of three and seven can produce two separate asset fees. If they are hypothetically 0.003 and 0.007 units of the same asset, the total is 0.01 and net receipt from ten gross units is 9.99. Check that the records describe distinct fills rather than duplicated exports.
If one fee is in another currency, do not add the bare numbers. Keep a row for each amount and asset, then convert explicitly if a common-value total is required. Also distinguish incremental fees from cumulative snapshots: a later displayed total of 0.01 after an earlier 0.003 does not necessarily imply 0.013 charged overall.
Reconcile account movements within a defined period
A compact balance display may round decimals, show only availability or include older holdings. Begin with the opening balance, then account for the purchase and every independent deposit, sale, withdrawal or reservation during the interval. The closing balance will not equal the new purchase’s net receipt when prior assets or concurrent movements exist.
A deposit of the same token while the order fills makes two balance screenshots insufficient for deriving the commission. Link the order to its unique fills and associated ledger movements. If the difference remains unexplained, record it as unresolved and obtain clarification rather than choosing a plausible small fee to force agreement.
Treat withdrawal as a later stage
Assume the net purchase credited 9.9 units. You then request a withdrawal under an illustrative service that deducts 0.05 units from the sent amount. Expected destination receipt is 9.85, before any independent receiving-side deduction. The difference from the original ten consists of the 0.1 trading fee and 0.05 withdrawal fee under these assumptions.
That is not a 1.5% fall in market price. Unit quantity and market valuation are different measures. Check the service’s preview because another product may add the fee outside the requested amount instead. Use the transfer fee calculator for the transport stage and the transfer helper if the recorded receipt differs.
Before self-custody, also verify asset, network and recipient requirements through the wallet helper. Correct accounting cannot compensate for an incompatible destination. A useful reconciliation ends with a documented chain from requested to executed, net, available and received quantities, with a specific reason for each transition.
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English content and examples reviewed: 27 October 2026. Read the Arabic edition.
