Enter the start date (discharge for demurrage, gate-out for detention), the end date, the free days and the carrier's tiered daily rates, and see the chargeable days and the cost per container and in total. Day counting conventions vary by carrier, so check the tariff.
Laneworks reads your customer's quote-request email, works out these numbers, prices every line from your own rate sheet and writes the reply, with a PDF quotation in your company's name. Forward one real request and it comes back in about two minutes.
Demurrage is charged for a full container that stays in the port or terminal beyond the free time. Detention is charged for keeping the carrier's container outside the terminal (after gate-out) beyond its free time, until the empty is returned. Some carriers combine them into one free-time period.
Usually free time starts on the day of discharge (or gate-out for detention) and every calendar day counts, weekends and holidays included, but carriers' tariffs differ. Use the counting option above to match your carrier.
Carriers raise the daily rate the longer a container is kept, to get equipment back into circulation. A typical tariff has a lower rate for the first few days after free time and a higher rate after that.
Book the delivery and customs clearance before the ship arrives, negotiate extra free days into the rate, and warn the customer of the last free day in the arrival notice. Including the free days in every quote avoids disputes later.