From the French demeurer — to linger. For centuries of maritime trade, a charterer got an agreed number of “lay days” to load or unload a ship; hold the vessel longer and you owed the owner demurrage — a charge for every day of delay. Admiralty courts have enforced it for hundreds of years: delay has a price, counted daily, owed without argument. Azimuth Demurrage applies the same ancient rule to claim money: the carrier’s own estimate starts the statutory clock, and every day they hold your payment past the deadline accrues interest at the state’s legislated rate. Ships pay for the days they hold the cargo. So do carriers.
Computed by the backend on every hourly pass: the state’s own statutory trigger — carrier estimate, proof of loss, written notice or notice of claim, depending on the state — starts the window, payments net against the carrier’s own number, and the meter runs on what’s left. This is the same data that prints in the daily digest.
Take the deductible off the carrier’s most recent Statement of Loss, not off the policy. On a multi-building risk the applied deductible is a schedule, not a percentage, and carriers revise it as the building values get corrected — sometimes by six figures. The policy tells you the formula; only the Statement of Loss tells you the number they actually charged. Interest runs on what is owed to the insured after the deductible, so an out-of-date deductible overstates every figure below it.
Source-verified 2026-07-28 (Walking the Plank v1). Re-verify any cite before it goes in a demand letter — that’s doctrine.
| State | Rate | Clock starts | Citation | Conditions |
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These licensed states have no property prompt-pay interest — the pressure tool is the bad-faith / penalty vehicle instead:
| State | The lever |
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