How to track hidden clearing fees in traditional SWIFT wire transfers manually

When international SWIFT wire transfers arrive for less than the amount sent, the missing funds are usually consumed by intermediary bank clearing fees (also known as “lifting fees”). Correspondent banks situated between the sending and receiving institutions deduct these handling fees directly from the principal payload while routing the payment.

To track and calculate these hidden deductions manually, you must request and audit the raw SWIFT confirmation record—traditionally called the MT103 Single Customer Credit Transfer document (or its ISO 20022 equivalent, the pacs.008 message).

Step 1: Request the Full MT103 Confirmation Record

Standard online banking transaction histories only display the net amount debited or credited. To audit the exact fee breakdown across the correspondent network:

1. Contact the sending bank’s wire department (or customer support) and request the Full SWIFT MT103 Confirmation (or pacs.008 Credit Transfer export).
2. Ensure you receive the customer/bank copy containing numbered tags (e.g., :32A:, :33B:, :71A:), rather than a basic payment advice PDF.

Step 2: Audit the Key SWIFT Message Tags

Once you have the MT103 record, line up the following specific tag fields to track where and how much money was deducted along the route:

Tag	Field Name	What It Tracks
:33B:	Currency & Instructed Amount	The exact principal amount the sender ordered to be transferred before any network processing.
:32A:	Value Date & Settled Amount	The net interbank amount actually settled and passed down the clearing chain.
:71A:	Details of Charges	Indicates who was supposed to pay processing costs: OUR, BEN, or SHA.
:71F:	Sender’s/Intermediary Charges	Specific fee amounts deducted by intermediary correspondent banks during transit.
:71G:	Receiver’s Charges	Specific fee amounts deducted by the receiving beneficiary bank.

Step 3: Run the Manual Fee Audit Calculation

By comparing the original instructed amount against the settled amount and explicit charge fields, you can isolate hidden intermediary deductions using this two step audit:

1. Calculate Total Net Leakage

$$\text{Total Deducted Fees} = \text{Field 33B Amount} – \text{Field 32A Amount}$$

If Field 33B shows $\$10,000$ USD and Field 32A shows $\$9,960$ USD, exactly $\$40$ USD was removed during interbank transit.

2. Isolate Intermediary Deductions vs. Explicit Bank Fees

$$\text{Hidden Intermediary Fees} = \text{Total Deducted Fees} – (\text{Field 71F Charges} + \text{Field 71G Charges})$$

• If Tag :71F: or :71G: lists explicit charges, those represent declared fees.
• If Tag :71F: is blank or zero, but Field :32A: is less than Field :33B:, an intermediary bank along the path subtracted its lifting fee directly from the transfer principal without itemizing it in the charge tags.

Step 4: Map the Routing Path to Identify the Charging Bank

To identify which bank took the fee, examine the routing institution tags on the MT103:

• Tag :53a: (Sender’s Correspondent): The holding or clearing bank used by the sending bank.
• Tag :56a: (Intermediary Institution): Third party intermediary banks facilitating cross border settlement.
• Tag :54a: (Receiver’s Correspondent): The holding bank where the receiving bank maintains its currency relationship.

By matching the drop in the settled amount between Tag :33B: and Tag :32A: against the intermediary listed in Tag :56a:, you can pinpoint the exact correspondent institution that deducted the clearing fee.

Understanding Charge Codes (:71A:)

The fee allocation instruction set in Tag :71A: governs how banks handle costs:

• OUR (Sender Pays All): The sender pays all upfront fees. Note: If an intermediary bank lacks a direct bilateral relationship with the sending bank, it may still deduct a lifting fee from the principal despite an OUR instruction.
• BEN (Beneficiary Pays All): All incoming and intermediary clearing costs are subtracted directly from the transfer payload before reaching the recipient.
• SHA (Shared Charges): The sender pays their own bank’s outgoing fee, while all intermediary clearing fees and incoming recipient fees are deducted from the principal.