The mechanics of contract leakage, pricing errors, missed rebates, unapproved escalations, out-of-scope billing, show up in every industry Revenew audits. Where that leakage concentrates, and which contracts carry the highest risk, depends heavily on the industry. A profit recovery audit tuned to a specific sector's contract structures and cost drivers finds materially more than a generic review.
Oil and gas
Oil and gas operations combine complex production-sharing arrangements, severance tax exposure, and large-scale field service contracts, all in an industry where drilling activity and commodity prices swing operational intensity year to year. Key leakage areas include production payment discrepancies, severance tax overpayments, and field service billing that doesn't reconcile to actual work performed. A large Texas operator recovered $12 million in marketing costs through specialized severance tax expertise, and a mid-sized operator saved $500K while avoiding a costly government audit through proactive severance tax compliance work. Revenew's Severance Tax Recovery and Production Payment Reviews are built specifically around this industry's contract structures.
Mining
Mining combines massive equipment contracts, remote and often international operations, and, in many organizations, less mature data systems than peer capital-intensive industries. That combination creates real transparency gaps in supplier billing, particularly around equipment maintenance, parts, and fuel logistics. Revenew's analysis of supplier audits in mining covers this in depth, and a mining client resolved billing disputes and achieved contractual gains through an MRO-focused audit. We generally recommend auditing large EPC vendors in mining every three to four years, and smaller suppliers every five to six.
Manufacturing
Manufacturing supply chains run on complex, often multi-tier supplier networks where flexible terms, negotiated to manage volume swings, can quietly become a cost liability if they aren't actively monitored. A manufacturing client identified roughly $15 million in refund opportunity through sales and use tax review, more than ten times its own estimate, and Revenew's ongoing coverage of multi-tier supplier networks and flexible supplier terms digs into where those risks concentrate. Our Industrial Manufacturing Supplier Oversight Checklist is a useful starting point for internal teams.
Utilities
Utility companies manage both sides of the leakage equation: complex billing on the vendor side (see utility bill audits) and high storm and disaster exposure that spikes invoice volume and complexity precisely when internal review capacity is strained. Revenew's rapid response work has delivered $2.29 million in net savings following a plant disaster, and our Utility Storm Invoice Benchmark Report quantifies the pattern across the sector.
Pharmaceuticals
Pharmaceutical supply chains carry unusually high compliance stakes alongside standard contract leakage risk, since supplier relationships intersect with regulatory requirements as well as commercial terms. Revenew's guide to maximizing value in pharmaceutical supplier contracts and Pharmaceutical Supplier Risk Self-Assessment Tool address this intersection directly, and a pilot contract compliance program for a multinational pharmaceutical client uncovered $1.2 million in recoverable funds.
What stays consistent across industries
Regardless of sector, three things hold true: leakage concentrates in the largest and most complex contracts, it compounds the longer a contract goes unreviewed, and full-population analysis finds materially more than a sampled review, because the highest-value errors are also the rarest.
Capital projects cut across every industry here, and our guide to construction and capital project audits covers them in detail.
Getting started
Revenew has run profit recovery audits across 86 countries and every major capital-intensive industry for 25 years. Explore our work by industry: Utilities, Oil & Gas, Pharmaceuticals, Chemicals, Manufacturing, and Mining.
Request a No-Risk Review to see what a profit recovery audit tuned to your industry would find.