Custody Services — Fee Revenue on Assets Under Custody (AUC)
Recognizing monthly fee revenue from institutional custody services — safekeeping and administration of client securities portfolios — calculated as an annual basis points charge on assets under custody.
| Account Name | Type | Debit ($) | Credit ($) |
|---|---|---|---|
| Accounts Receivable — Custody Fee (Monthly Accrual) | Asset (+) | 3,500,000.00 | - |
| Custody Service Revenue (Over-Time — Monthly Accrual) | Revenue (+) | - | 3,500,000.00 |
💡 Accountant's Note
Global custodians (BNY Mellon, State Street, JPMorgan) hold trillions in client assets under custody — providing safekeeping, settlement, corporate action processing, FX execution, securities lending facilitation, fund administration, and reporting. Custody fees are typically 0.5–3 basis points annually on AUC for core custody, with additional transaction fees and ancillary service charges. For $500B AUC at 0.5bps annually: $25M/year = $2.08M/month. Custody is a highly scalable, technology-intensive business with significant switching costs — clients rarely move custodians due to the operational complexity of transferring portfolios. Revenue is recognized over time (each month of safekeeping and administration services provided = a distinct performance obligation fulfilled).
Practitioner & Systems Framework
💻 ERP Architecture
Custody fee computation uses AUC at the billing date (or average AUC during the billing period per the custody agreement). AUC values fluctuate with market movements — rising markets increase AUC and thus fees automatically. Transaction fees are recognized on trade date. Securities lending income (earned on client securities with client consent — a significant ancillary revenue stream) is shared with clients per the lending agreement.
⚠️ Audit Flags
Auditors confirm AUC balances against the custodian's own books (which must match client portfolio statements). The fee rate must match the signed custody agreement for each client. Bundled pricing (where custody fees include multiple services) may require ASC 606 allocation. Off-balance-sheet treatment of custodied assets (the custodian does not own client assets) must be confirmed.
📄 Required Documentation
Custody agreements by client (fee rate schedule, AUC definition), monthly AUC calculation, billing statements, custodied asset reconciliation (custodian records vs. client statements), securities lending income sharing documentation, and transaction fee rate schedule.
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