Demurrage — Revenue from Charterer's Delay in Loading/Discharging (Beyond Allowed Laytime)
Accruing demurrage income when a charterer uses more time loading or discharging cargo than the charter party allows — a critical and frequently disputed revenue source unique to maritime shipping.
| Account Name | Type | Debit ($) | Credit ($) |
|---|---|---|---|
| Demurrage Receivable (Days on Demurrage × Demurrage Rate) | Asset (+) | 285,000.00 | - |
| Demurrage Income (Recognized When Laytime Expires and Demurrage Begins) | Revenue (+) | - | 285,000.00 |
💡 Accountant's Note
Demurrage is the compensation paid by the charterer to the shipowner for delays in loading or discharging beyond the 'laytime' (the agreed free time for cargo operations) stipulated in the charter party. Every voyage charter includes: LAYTIME (the allowed time for loading + discharging — e.g., 4 days SHINC) and DEMURRAGE RATE (the daily rate charged once laytime is exceeded — e.g., $15,000/day). If the charterer uses 6 days (2 days over laytime): demurrage = 2 days × $15,000 = $30,000. Demurrage is the 'agreed damages' for delay — it's a contractually fixed rate, not actual damages proof required. Revenue recognition: demurrage accrues from the moment laytime expires (it is earned continuously at the demurrage rate as each hour of delay occurs). However: demurrage is HIGHLY DISPUTED in practice — charterers routinely challenge the laytime calculation (claiming port congestion was owner's fault, weather exceptions, holidays counted incorrectly). The variable consideration constraint requires applying significant conservatism to demurrage accruals — only the amount 'highly probable not to be reversed' should be recognized.
Practitioner & Systems Framework
💻 ERP Architecture
Demurrage calculation requires the 'Statement of Facts' (a port agent document recording every event during port time: vessel arrival, Notice of Readiness (NOR) tendered, berth obtained, loading commenced, loading completed, departure — all timestamped). The 'laytime calculation' is prepared from the Statement of Facts, applying the charter party terms (SHINC, SHEX, weather exceptions, holidays). Demurrage claims are submitted after the voyage and may take 6-18 months to settle. Many shipping companies maintain a 'demurrage reserve' — recognizing only 60-80% of the gross demurrage claim given historical settlement rates.
⚠️ Audit Flags
Demurrage accruals are among the most judgment-intensive items in shipping financial statements. Auditors test: (1) The laytime calculation — is the Statement of Facts accurately applied to the charter party terms? (2) The variable consideration constraint — what percentage of claimed demurrage is actually collected historically? A firm that accrues 100% of demurrage claims but historically settles for 70% is overstating revenue. (3) Aged demurrage receivables — claims outstanding >12 months are high-risk. (4) Opposing charterer's counterclaims (which reduce the net demurrage due).
📄 Required Documentation
Voyage charter party (laytime allowed, demurrage rate, exceptions), Statement of Facts (from port agents at load and discharge ports), Notice of Readiness (NOR) tender record, laytime calculation sheet (showing all events and laytime consumed), demurrage claim submitted to charterer, historical demurrage settlement rate analysis, variable consideration constraint documentation, and aged demurrage receivable report.
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