# 1.5% gross margin improvement driven by relieving manual contract reviews A Swiss offshore operator turned manual contract reviews into an automated flow, uncovering a 1.5% gross margin improvement from rebillable costs. ## Content Before setting out on a voyage, the ship owner and the charterer agree which costs are rebillable. Months or years later, when the hire is completed, the final invoices for the voyage are settled, and the owner has to sift through invoices and contract clauses to work out which costs can be billed back. normal The challenge h2 A Swiss offshore operator managing thousands of invoices did not want to spend valuable team time reviewing them for rebillable costs. Rebilling meant reviewing contract clauses and email communications by hand to recoup the associated voyage costs. With such a heavy manual lift, the reviews were never the priority, and the window for rebilling would pass before cases were flagged to customers. Customer Case flagged Suppliers Rebilling window What we built The operator partnered with Arrakis to re-architect the manual contract review into a streamlined flow for identifying and recovering costs, as agreed in the original contracts. Contracts and invoices are now sorted automatically and mapped to the relevant clauses. The flow prepares the case for submission to the customer and generates the invoice, and automated chasers to suppliers close out the receipt of final invoices. Approve Chase suppliers sort Sort map Map case Case invoice Invoice The impact Business impact ## Gross margin improvement gross margin, from rebillable invoices over the last two years A multi-million impact across 2025–26. + % Efficiency ## Contract assessment Manual review → Fully automated Thousands of invoices mapped across the relevant contracts. The flow uncovered a 1.5% gross margin improvement from rebillable invoices over the last two years. Further invoices were identified and flagged for the team to review. Costs that were agreed in the contract now get recovered, without the team having to read every invoice against every clause.