Accessorial Charges Calculator
Calculate freight accessorial charges including liftgate, inside delivery, appointment scheduling, and residential delivery fees for LTL shipments.
Detention & Demurrage Calculator
Calculate detention and demurrage fees for trucks and containers held beyond free time. Estimate daily charges for trucking, port, and rail detention.
$
Billable Hoursโง
3.0
5 total โ 2 free
Per Truckโง
$225.00
Charge for 1 truck
Total Chargeโง
$450.00
2 trucks
Avg Cost / Hourโง
$150.00
Total รท billable periods
Annual (monthly events)โง
$5,400.00
If this happens once per month
Annual (weekly events)โง
$23,400.00
If this happens once per week
Rate Tier Breakdown
| Tier | Hours | Rate | Cost (per unit) | Share |
|---|---|---|---|---|
| Standard | 3 | $75.00 | $225.00 | |
| Total | 3 | โ | $225.00 |
Detention Cost by Time Held
| Hours Held | Billable | Per Truck | Total (2 trucks) |
|---|---|---|---|
| 1 | 0 | $0.00 | $0.00 |
| 2 | 0 | $0.00 | $0.00 |
| 3 | 1 | $75.00 | $150.00 |
| 4 | 2 | $150.00 | $300.00 |
| 6 | 4 | $300.00 | $600.00 |
| 8 | 6 | $450.00 | $900.00 |
| 10 | 8 | $600.00 | $1,200.00 |
| 12 | 10 | $750.00 | $1,500.00 |
Annual Impact Projection
| Events / Year | Annual Cost | Monthly Avg |
|---|---|---|
| 12 | $5,400.00 | $450.00 |
| 24 | $10,800.00 | $900.00 |
| 52 | $23,400.00 | $1,950.00 |
| 100 | $45,000.00 | $3,750.00 |
| 250 | $112,500.00 | $9,375.00 |
Savings from Faster Turnaround
Reduce to 3 hours: save $300.00 per event
Reduce to 2 hours: save $450.00 per event
Reduce to 1 hours: save $450.00 per event
Planning notes, formulas, and examples
About the Detention & Demurrage Calculator
Detention and demurrage are charges assessed when trucks, containers, or equipment are held beyond their allotted free time. Detention applies to trucks waiting to be loaded or unloaded at a shipper's or receiver's facility. Demurrage applies to shipping containers held at a port, rail yard, or container depot beyond the carrier's free-time allowance.
These charges incentivize efficient loading/unloading and timely container return. Detention is typically charged per hour after a 1-2 hour free time window, while demurrage is charged per day after a 3-7 day free period. Rates have increased significantly in recent years, making efficient operations critical.
This calculator helps you estimate detention and demurrage costs based on time held, free time allowed, and applicable rates.
Use the result to compare operating scenarios, pressure-test assumptions, and rerun the model when volumes, rates, or service targets change.
When This Page Helps
Detention and demurrage fees can reach hundreds or thousands of dollars per shipment. Calculating expected costs helps you budget accurately, identify inefficient facilities, and justify investments in faster loading/unloading processes. Proactive management of these charges can save significant annual costs.
How to Use the Inputs
- Enter the total hours (detention) or days (demurrage) the equipment was held.
- Enter the free time allowance.
- Enter the charge rate per hour or per day.
- View the calculated detention or demurrage fee.
- Compare against carrier invoices for accuracy.
- Track patterns to identify improvement opportunities.
Formula used
Detention = (Hours Held รขหโ Free Hours) รโ Rate per Hour
Demurrage = (Days Held รขหโ Free Days) รโ Rate per Day
Total = MAX(0, Detention or Demurrage)Example Calculation
Result: Detention Fee = $450.00
Hours held = 5. Free hours = 2. Billable hours = 3. Rate = $75/hour รโ 2 containers = $150/hour. Total detention = 3 รโ $150 = $450.
Tips & Best Practices
- Schedule dock appointments to minimize truck wait time and detention charges.
- Cross-dock or pre-stage freight to reduce loading/unloading time.
- Monitor dwell time at ports and pull containers before free time expires.
- Negotiate extended free time during contract negotiations.
- Implement yard management systems to track container and trailer dwell time.
- Track detention charges by facility to identify and fix chronic bottlenecks.
Understanding Free Time
Free time is the window during which no charges accrue. For truck detention, free time is typically 1-2 hours from the driver's arrival at the facility. For container demurrage, free time starts when the container is discharged at the port and typically runs 3-7 business days. Negotiating extended free time is one of the most effective cost-saving strategies.
Escalating Rate Structures
Many carriers use escalating rate structures where the per-day or per-hour charge increases the longer the equipment is held. For example, container demurrage might be $150/day for days 1-5 past free time, $250/day for days 6-10, and $400/day beyond day 10. This structure incentivizes prompt equipment return.
Impact of Port Congestion
During port congestion events, demurrage charges can accumulate rapidly when shippers are unable to retrieve containers due to extended wait times and reduced appointment availability. Some carriers offer temporary free-time extensions during major disruptions, but this is not guaranteed.
Sources & Methodology
Last updated:
Frequently Asked Questions
Detention charges apply to trucking equipment (trailers, trucks) held at a facility beyond free time for loading/unloading. Demurrage charges apply to shipping containers held at a port, terminal, or rail yard beyond the allowed free time period.
Truck detention rates typically range from $50-$100 per hour after 1-2 hours of free time. Some carriers charge as much as $150/hour during peak periods. Most carriers cap daily detention at 8-10 hours ($400-$1,000/day).
Port demurrage typically starts at $100-$200 per container per day for the first few days past free time, then escalates to $300-$500+ per day for extended holds. During port congestion, demurrage can exceed $1,000/day.
Standard truck detention free time is 1-2 hours for loading or unloading. Container demurrage free time at port is typically 3-7 days for imports (longer for exports). Free time can be negotiated, especially for high-volume accounts.
Yes. If detention resulted from carrier scheduling errors, equipment problems, or port congestion beyond your control, you may have grounds for dispute. Document arrival/departure times and maintain thorough records for dispute resolution.
Key strategies include efficient dock scheduling, pre-loading trailers, adequate labor at delivery points, real-time container tracking, port dwell time monitoring, and using inland container depots for overflow during congestion events. Use this calculator to model different scenarios and find the best approach.
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