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Contract Vendor Audits

Contract/Vendor Audits play a critical role in identifying non-compliance, mitigating risks and recovering substantial sums. Our methodology is proven to be effective, while our approach safeguards vendor relationships. 

Contact Ian McPherson

  • Ian McPherson
    Meet the team

    The team

  • Oil & Gas. Exploration & Production. Oilfield Services.  

    Who we can help

  • Joint Venture & Contract Audit. Joint Venture & Drilling Audits. Completion Accounts. Audit & Assurance. Virtual Finance Function. Corporate Finance. Global Mobility. Litigation Support. Whistleblowing. Fraud Prevention & Investigation. 

    How we can help


Contract Vendor audits are valuable in a marketplace where operations can be very complex, involving several vendors and spread across several remote locations. Our audits will determine whether a vendor’s management systems, data and performance are complying with the terms and conditions of their contract with you. Where we discover that’s not the case, our intervention will correct the issues and recover any costs owed to you. 

Our teams have exceptional credentials and are respected within the industry. They have a deep working knowledge of commercial arrangements and enjoy good relationships with vendors, which can be crucial to keeping your operations running smoothly. 


For a variety of reasons, your vendors’ self-reporting may be inaccurate, and their invoices may not always match what was stipulated in the terms of the contract. This can easily result in overpayment which, if replicated across multiple vendors and several operations, could seriously impact your profitability and in a worst case scenario, the viability of your business.  

The complexity of dealing with numerous vendors across multiple projects only adds to the risk. Yet it’s unlikely you will have the time and resources to investigate the issue whilst still managing your operations and your other business pressures. In comparison, our highly experienced auditing team is dedicated to the task and has the skills and tools to examine, resolve and report quickly and accurately.  

In addition, they can flag up areas in your contracts that could be amended to reduce risk, pinpoint any operational weaknesses that could lead to cost savings and create an environment where vendors are more aware of their contract accountability – leading to fewer problems in the future. 


  • We are experienced, thorough and work quickly, using tech wherever appropriate to analyse extensive data in close detail 
  • We uncover any disparities between the vendor’s billing and the contract terms 
  • We’ll also reveal and alert you to non-compliance with agreed operating procedures 
  • There is the potential to recover significant sums, especially when multi-year contracts are involved, such as overbilling or unused funds 
  • Where your operations are widespread, our audit can also highlight any variations in how regional parts of your organisation apply their controls 
  • We may also be able to show you how you can improve data-sharing within your organisation, and your own efficiency and controls 
  • Our report will highlight any opportunities to reduce costs and improve quality control – critical in a challenging and competitive environment 
  • By improving transparency and trust, we can help you build stronger relationships with your vendors. 


We’ll save you time by managing the entire Contract Audit process, whilst liaising with you and the vendor. We will: 

  • Issue and agree audit scopes well in advance of the audit fieldwork  
  • Tailor our work to focus on key areas, such as deliverables, expenditure levels against contract terms, billings and payments 
  • Identify potential compliance issues for risk mitigation purposes, cost efficiencies and process improvement  
  • Verify the accuracy of the vendor’s data, to make contract compliance more transparent 
  • Report to you immediately on conclusion of the field work, identifying any cost recoveries. 

As well as reviewing the vendor’s systems, we’ll appraise your relevant control systems to identify any scope for improvements, and report back on how you might implement them.   

  • Commercially driven tax and financial advice provided by people who understand my business and who care about its success. A dedicated partner led team of real advisors with real commercial focus.

    Derek Smith, Maritime Developments Limited

  • AAB deliver on time, every time and respond promptly to my queries and needs. I would, and have, recommended AAB to businesses who have since joined them.

    Graham Mackie, Dales Engineering Services Limited

  • Having AAB as our business partners gives me peace of mind as they listen, participate and work with us to ensure our goals are achieved.

    Gillian Irvine, NorDan

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