Demurrage fees at PortMiami run $150 to $450 per container per day and the clock starts the moment your free time expires. Here is exactly how to stop them before they start.
What Is Demurrage and Why Does PortMiami Charge It?
Demurrage is a fee charged by the ocean carrier when your import container sits inside the marine terminal past its allotted free time. At PortMiami, free time typically runs 4 to 5 calendar days from when the container is made available. Once that window closes, charges accrue daily and compound fast.
PortMiami handles over 1.1 million TEUs per year across terminals operated by POMTOC, Seaboard Marine, and DP World. Congestion is real, trucker appointment windows are tight, and free-time clocks do not pause for weekends or holidays. That combination makes demurrage one of the biggest hidden costs for South Florida importers.
The 7 Most Common Reasons Miami Importers Get Hit with Demurrage
- Slow customs clearance. Your container is discharged and sitting on the terminal, but CBP has not released the entry. Every day waiting on an exam or documentation hold is a demurrage day.
- Trucker appointment unavailability. PortMiami terminals use eModal and NAVIS. If your trucker cannot get a slot within free time, the clock still runs. Peak season makes this dramatically worse.
- Chassis shortages. Pool chassis (DCLI, TRAC) at PortMiami are frequently depleted. If your carrier is chasing a chassis, your container is sitting and accruing fees.
- ISF or documentation errors. A wrong HTS code or missing commercial invoice can trigger a CBP hold that burns free time while you fix paperwork.
- PGA holds (FDA, USDA). Partner Government Agency holds are common for food, pharma, and agriculture and can take 3 to 10 business days to resolve. Free time does not pause.
- Communication lag between forwarder and trucker. A 24-hour delay in relaying availability can cost one full demurrage day.
- Weekend and holiday timing. Containers made available Thursday or Friday burn free time over the weekend. Know how your carrier counts holidays.
7 Proven Strategies to Avoid Demurrage at PortMiami
1. Book Your Trucker Before the Vessel Arrives
Have a drayage carrier on standby before your ship docks. Share the vessel name and ETA so they can pre-stage a chassis and be first in line for an appointment slot the moment the container is available. Go Freight AI monitors vessel ETAs 7 days out and pre-assigns drivers to anticipated pickups at both PortMiami and Port Everglades.
2. File Your Customs Entry 5 Days Before Vessel Arrival
Pre-arrival filing allows CBP to review and release your entry before the container hits the terminal. This eliminates the most common demurrage trigger entirely. It costs nothing extra and can save hundreds per container on every shipment.
3. Use a Carrier That Owns Its Chassis
The chassis shortage at PortMiami is structural and not going away. Pool chassis are unreliable during peak periods. Working with a carrier that owns its fleet removes this variable completely. Go Freight AI operates a company-owned chassis pool staged at both PortMiami and Port Everglades with no pool dependency.
4. Set Up Real-Time Availability Notifications
When your container is released, your trucker should know within the hour. Automated forwarding of terminal availability emails to your drayage carrier eliminates one of the most common and most avoidable demurrage scenarios on every shipment.
5. Know Your Carrier Free-Time Rules Before Booking
MSC, Maersk, CMA CGM, and Evergreen all have different rules with different peak-season tiers. Before booking ocean freight, ask your forwarder for the specific free-time schedule at PortMiami. Know your window before the container leaves origin port.
6. Get Demurrage SLA Language in Your Drayage Contract
If your trucker fails to pick up on time due to their operational failures, you should not absorb that cost. Reputable carriers include SLA language sharing responsibility for demurrage they cause. Get this in writing before committing volume to any carrier.
7. Use a Bonded Carrier for In-Bond Moves
A TSA-approved bonded carrier lets you pull the container off the terminal under bond, stopping the demurrage clock immediately while customs clearance continues separately. Go Freight AI is a TSA-approved bonded carrier with a 100,000 sq ft bonded CFS minutes from PortMiami, purpose-built for exactly this scenario.
How to Dispute Demurrage Charges When You Get Hit Anyway
- Document everything immediately. Terminal timestamps, trucker appointment confirmations, CBP hold notices, and vessel arrival records are your evidence. Collect these before filing any dispute.
- Identify who caused the delay. CBP exam, terminal error, or chassis shortage each has a different dispute path and different responsible parties.
- File with the ocean carrier in writing within 30 days. Demurrage is a carrier charge. Contact the carrier local agent in Miami with documentation attached to every communication.
- Reference FMC transparency rules. Carriers must publish their D&D policies under FMC regulations. If they are not following their own published rules, cite this explicitly in your dispute.
- Escalate to the FMC for large charges. The Federal Maritime Commission has a formal dispute resolution process. For charges over ,000, it is worth pursuing through their formal channels.
PortMiami Terminal Free Time Quick Reference
| Terminal | Operator | Typical Free Time | Appointment System |
|---|---|---|---|
| Seaboard Marine Terminal | Seaboard Marine | 4 calendar days | NAVIS / eModal |
| POMTOC (Carnival Way) | Port of Miami | 5 calendar days | eModal |
| South Florida Container Terminal | DP World | 4-5 calendar days | NAVIS / TLS |
| Port Everglades Terminal | SSA Marine / Broward County | 4 calendar days | NAVIS |
The Go Freight AI Zero-Demurrage Approach
- Pre-vessel dispatch: Driver assigned before your ship arrives. When availability fires, we book within the hour.
- Owned chassis pool: 100+ company-owned chassis at PortMiami and Port Everglades. No pool dependency, no chassis-shortage delays.
- Bonded CFS on-ramp: TSA-approved bonded facility that stops the demurrage clock the moment we pull your container.
- DispatchAI monitoring: Real-time gate availability tracking with instant alerts to our ops team.
- Written SLA: If our operations cause a pickup delay, we cover the demurrage. In writing, on every contract.
Ready to stop paying demurrage?
Tell us your next vessel ETA and we will have a driver staged before it docks.
Get a same-day quote →Frequently Asked Questions
How much is demurrage at PortMiami per day?
Demurrage at PortMiami typically ranges from $150 to $450 per container per day depending on the ocean carrier, container size, and season. Rates escalate after the first week. Always confirm your specific carrier rate schedule before your shipment arrives.
Who pays demurrage, the importer or the freight forwarder?
The ocean carrier bills the consignee on the Bill of Lading, usually the importer. However if the delay was caused by the freight forwarder or drayage carrier, those parties may be contractually liable to reimburse you. SLA language in your logistics contracts is essential protection.
Can demurrage charges be waived?
Yes. Ocean carriers will waive or reduce charges when the delay was caused by a CBP hold, documented chassis shortage, or terminal system error. Submit a formal written dispute with documentation within 30 days of receiving the invoice.
Does free time at PortMiami include weekends?
Most ocean carriers count free time in calendar days including weekends and holidays. Some offer business-day free time. Always confirm in your carrier tariff and assume calendar-day counting as the safe default when in doubt.
What is the difference between demurrage and detention?
Demurrage is charged when the container sits inside the terminal past free time. Detention is charged when the container is kept outside the terminal past the allowed return period. Both are ocean carrier charges but apply at different points in the container journey.