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How to conduct a procurement audit in 7 steps

How to conduct a procurement audit in 7 steps

Emily Taylor
Contributing writer, BILL
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Conducting a procurement audit is critical to ensuring your accounts payable (AP) processes are efficient, compliant, and cost-effective. The earlier you get involved in procurement, the better your odds of detecting and correcting major payment delays before they impact your bottom line.

With that in mind, our procure-to-pay audit guide helps you proactively approach AP optimization. You'll learn how to conduct a procurement audit in just seven steps.

Key takeaways

A procurement audit helps you improve key business processes.

You can uncover opportunities to save money and optimize spending.

Regular audits lead to better supplier partnerships and improved procurement outcomes.

What is a procurement audit?

A procurement audit thoroughly examines your organization's procurement processes, policies, and activities. You will identify inefficiencies and assess compliance with internal and external regulations throughout the process. A detailed audit report will help your procurement department make improvements that support healthier vendor relationships and better cash flow.

One of the key objectives of procurement audits is to identify shortcomings in your accounts payable (AP) processes. You might discover that you are manually typing most invoices into your accounting software.

Roughly 68% of businesses manually input AP data into their enterprise resource planning (ERP) or accounting platform. Automating the input process could improve efficiency and address other procurement processes.

Automate AP data entry with BILL Accounts Payable.

Audit findings will also help ensure your team is following internal controls. For instance, your audit team can determine whether your purchasing department is segregating responsibilities, verifying invoices before payment, and reconciling invoices with purchase orders.

Finding out what you can do better is just the first step. Your audit reports will go on to help you make targeted improvements that can promote cost savings and increase efficiency.

The procurement audit checklist

Our internal audit checklist for procurement will help ensure that your audit team thoroughly examines all areas of your accounts payable workflows and procurement activities. Here are a few items to include in your auditing process:

  • Review procurement policies
  • Analyze documents related to procurement and AP
  • Ensure compliance with legal and regulatory requirements
  • Examine internal controls
  • Review procurement software tools
  • Assess the accuracy and completeness of procurement data
  • Check for instances of procurement fraud
  • Include budget and expenditure data in your audit report
  • Assess vendor management protocols
  • Evaluate the diversity of your supply chain ecosystem
  • Review training programs for procurement teams

Your auditing team can use this procurement audit checklist to ensure the final audit report covers all relevant areas of your workflows and procedures. Effective procurement processes require a combination of sound policies, well-trained staff, vendor buy-in, and robust technological solutions. A single weak link can have severe consequences for your business and its trade partners.

How to conduct a procurement audit

How to conduct a procurement audit

The typical procurement audit process includes seven key steps. However, you can consolidate steps or add extra tasks to your procurement audit workflow based on organizational needs and your supply chain's complexity. The steps below are meant to serve as a baseline that you can use to conduct a successful procurement audit.

1. Define the audit scope and objectives

Start by clearly defining the scope and purpose of your procurement audit. Do you have specific concerns about your procurement practices or want to conduct a general health check on your procurement function?

Establish goals for your audit team so that they know how to allocate resources and where to focus their attention. Setting clear objectives makes it easy for external auditors or your internal procurement team to conduct a successful audit.

2. Assemble your team

Next, you need to build a diverse team to lead your audit process. Your team should have expertise in purchasing, procurement, and accounts payable. Each member can provide a unique perspective when evaluating your purchasing processes and strategies.

Consider whether your audit will include internal team members or external auditors. Bringing in an outside entity can help ensure your audit report is objective and thorough. They can honestly assess your procurement process and may be able to catch shortcomings that your internal team has missed.

Make sure that you scale the size of your team based on the scope of your audit. Broader procurement audits require a larger team and more time to compile reports. A comprehensive procurement audit can take weeks or months, especially if you have a complex supply chain.

3. Gather documents and data

Your team is ready to start gathering data about your procurement practices and workflows. They should collect all relevant documents, including:

  • Contracts
  • Purchase orders
  • Supplier invoices
  • Records of procurement transactions

Organize these documents systematically to facilitate easy access and review. Accurate and complete documentation is essential for identifying issues and ensuring a thorough procurement audit report.

If you manage your procurement function using manual processes, this step may prove difficult and time-consuming. Conversely, consolidating your procurement contracts, AP invoices and other procurement activities into a centralized platform will make life much easier for your audit team.

Keep that in mind when you are evaluating procurement performance during the audit review process. Implementing modern contract management tools will help you strategically address some of the concerns your team discovers during their analysis of your procurement functions.

4. Review policies and procedures

Examine your organization's procurement policies and procedures closely. They must be up-to-date, comprehensive, and aligned with industry best practices and regulatory requirements.

If you don't know how to write (or rewrite) a procurement policy, brush up on this process while reviewing your existing procedures. Creating an effective policy is easier than you might expect and involves just three key steps:

  1. Putting together a procurement committee
  2. Determining the purpose and scope of your policy
  3. Hammering out the details
  4. Evaluate supplier performance

An audit isn't just about reviewing your internal procurement operations. It's also an opportunity to assess your suppliers' performance by reviewing key metrics such as delivery times, quality of goods, and adherence to contract terms.

Gather feedback from relevant stakeholders who regularly interact with suppliers to gain insights. This evaluation helps ensure that your suppliers meet your organization's standards and expectations.

You can use this audit data during procurement negotiations. Be honest with your suppliers about your expectations and needs. If they cannot meet them, consider diversifying your supply chain ecosystem to provide flexibility and increase resilience

5. Analyze transactions to look for trends

Reviewing transactions will shed light on your procurement process flow's efficiency. Scrutinize deals from every angle to ensure compliance, accuracy, and cost-effectiveness. Look for patterns or anomalies that could indicate fraud or inefficiencies. Verify that transactions adhere to your procurement policies and internal controls.

A transaction analysis helps identify areas where you can improve your procurement process. For example, let's say that two of your suppliers offer net 30 payment terms, meaning you have 30 days to pay invoices after receiving them. However, if you pay the invoices within seven days, your supplier offers a 5% discount.

During a review of the previous 12 months of transactions, you discover that your organization never met the discount conditions because payments always arrived outside the 7-day window. Through transaction analysis, you identify this missed cost-savings opportunity and make changes to access the 5% discount. This is one of many ways procurement audits can help save you money.

6. Report findings and improve your procurement management plan

Compile your audit findings into a detailed report. Then, meet with key stakeholders and review the outcome. Focus on what the company is doing well, what it can do better, and how to fix shortcomings through targeted improvements.

Work with key stakeholders to tweak your procurement management plan to resolve any significant issues you discovered during your audit. If you alter too much at a time, you could place too much stress on your procurement team and inadvertently create new challenges. Focus on addressing the biggest challenges in your AP workflows and give those changes time to impact your accounts payable processes. During your next audit, you'll see what worked and what didn't.

Ready to leverage automation in your procurement process?

Automation holds the key to streamlined procurement processes and enhanced auditing capabilities. BILL Accounts Payable can help you pay invoices on time every time. Ensuring timely payments allows you to unlock vendor discounts, spread out your expenses to avoid overburdening your cash flow, and keep trade partners happy.

BILL Accounts Payable also helps prevent billing errors via our three-way matching feature. It compares invoices to delivery receipts and purchase orders to ensure you received (and are paying for) precisely what you ordered.

Pave the way for smoother audits and fewer AP headaches. Sign up for a risk-free trial today and modernize how you manage AP and procurement.

Procurement audit FAQ

What is the main purpose of a procurement audit?

A procurement audit ensures that your activities comply with internal controls and external regulations. It also enables you to identify opportunities for saving money and improving overall efficiency.

Procurement audit best practices

Procurement audits are most effective when you adhere to established best practices. Here are a few tips to get the most out of your audits:

  • Conduct audits regularly
  • Use a standardized checklist
  • Involve stakeholders
  • Leverage technology to automate as much as possible
  • Follow up on recommendations

Additionally, make sure you clearly define each audit's purpose and scope. This way, your team can focus on core objectives and provide relevant feedback in their final report.

Author
Emily Taylor
Contributing writer, BILL
With a background in finance and over a decade of experience in business writing, Emily simplifies complex finance topics to help businesses streamline operations, manage cash flow, and make smarter financial decisions.
Author
Emily Taylor
Contributing writer, BILL
With a background in finance and over a decade of experience in business writing, Emily simplifies complex finance topics to help businesses streamline operations, manage cash flow, and make smarter financial decisions.
Get more from BILL
Subscribe to finance insights and thought leadership content delivered straight to your inbox.
By continuing, you agree to BILL's Terms of Service and Privacy Notice.

Frequently asked questions

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Software Comparison

BILL Spend & Expense
Best for AI expense automation
4.5 on G2
  • Smart corporate cards with real-time tracking, flexible limits, and instant visibility into every transaction across your team [1]
  • Unlimited free virtual cards with unique numbers for each vendor or subscription—freeze, delete, or set custom limits instantly to prevent overcharges and reduce fraud risk [5]
  • AI-powered auto-categorization and receipt matching that connects card transactions and expenses into a single reconciliation workflow [1]
  • Customizable budgets with spend controls based on merchant, amount, receipt requirements, and configurable approval workflows [3]
  • Auto-freeze on cards with incomplete transactions, ensuring receipts and documentation are captured before additional spend is approved [1]
  • Up to 7x points on restaurants, 5x on hotels, 2x on recurring software, and 1.5x on all other purchases (rates shown are for weekly or daily billing cycle; rates vary by billing frequency) [2]
  • Two-way sync with QuickBooks, NetSuite, Sage Intacct, Xero, and Microsoft Dynamics; additional integrations with Acumatica, Slack, and HRIS platforms [1]
  • Pro: $0/user/month with all features included—no paid tier to unlock [4]
  • Pro: Merchant controls and auto-freeze cards at no extra cost [1]
  • Pro: Credit lines that don't fluctuate daily based on bank balance [4]
  • Pro: All ERP integrations (NetSuite, Sage Intacct, Xero) included free [1]
  • Con: 12-month holding period before rewards can be redeemed [2]
  • Con: Category reward multipliers cap at $5,000/month per category [2]
  • Con: Less established in global, enterprise-scale expense programs with multi-country regulatory requirements

BILL Spend & Expense pairs corporate cards with AI-powered expense management and budget controls in a single platform at no cost—teams aren't paying per user or upgrading to unlock features that competitors gate behind paid tiers.

Merchant-level spend controls and auto-freeze on incomplete transactions give admins granular oversight without manual policing, and two-way ERP integrations are included free where Ramp and Brex charge for NetSuite and Sage Intacct access. The main trade-off is an initial 12-month rewards holding period before accumulated points can be redeemed. [1][2][3][4]

Commonly compared to: Ramp and Brex (for card-first expense management), and SAP Concur (for enterprise expense programs).

Pricing
$0/user/month with no annual fee
Integrations
Two-way sync with QuickBooks, NetSuite, Sage Intacct, Xero, and Microsoft
Ideal company size
SMB to mid-market
SAP Concur
Best for large enterprises
4 on G2
  • AI-powered receipt capture via ExpenseIt on the SAP Concur mobile app, with smart matching that combines credit card charges and e-receipts into expense reports automatically [7]
  • Configurable approval workflows with built-in audit rules that flag policy exceptions, plus optional Intelligent Audit and Verify add-ons for automated compliance checks [6][7]
  • Modular product suite: Concur Expense, Concur Travel, and Concur Invoice are separate products that can be purchased individually or together, so organizations can start with expense management and add capabilities over time [6]
  • Bank card feed integrations that import corporate card transactions directly into expense reports for automatic reconciliation [6]
  • Joule, SAP's AI assistant, for expense report review, spend analysis, and cost estimation [6]
  • Budget tracking and monitoring tools that give finance teams visibility into spend against departmental or project-level budgets [6]
  • Support for global operations with multi-currency expense reporting and country-specific tax and regulatory compliance tools [6]
  • Pro: 300+ pre-built integrations including native SAP ERP sync [7][8]
  • Pro: Global coverage with multi-currency and regulatory compliance tools [6]
  • Pro: Modular—add travel or invoice management without switching platforms [6]
  • Pro: AI-powered receipt capture and smart matching via ExpenseIt [7]
  • Con: Quote-based pricing; no published rates on the website [6]
  • Con: No corporate card offering; relies on bank card feed integrations [6]
  • Con: Implementation can be complex for smaller organizations [6]
  • Con: Live support requires purchasing the User Support Desk service [6]

SAP Concur is the incumbent in expense management software, with the largest partner ecosystem and broadest global footprint on this list. Its modular approach gives large organizations flexibility to start with expense management and layer on travel or invoice capabilities independently.

The trade-off is complexity—pricing is opaque, there's no corporate card offering, and smaller teams may find the platform more than they need. Organizations already in the SAP ecosystem will get the most value from native S/4HANA integration. [6][7][8]

Commonly compared to: BILL (for SMB expense management), and Coupa (for enterprise spend management).

  • Best for: Mid-market and enterprise organizations that need a globally scalable expense management platform with configurable compliance tools and a large partner ecosystem. [6][7][8]
  • Highlights: AI-powered receipt capture via ExpenseIt, configurable approval workflows with built-in audit rules, optional Intelligent Audit and Verify add-ons for automated compliance checks, 300+ app integrations, and native SAP ERP sync. [6][7][8]
  • Ideal if you need: An expense platform that integrates natively with SAP S/4HANA or other enterprise ERPs, with the flexibility to add modules like Concur Travel or Concur Invoice over time. [6][7]
Pricing
Quote-based
Integrations
QuickBooks, Xero, Sage,TSheets, Gusto, & most business credit cards.
Ideal Company Size
Mid-market to enterprise
Ramp
Best for a broad spend platform
4.8 on G2
  • Corporate cards with customizable spend controls by merchant, category, employee, or department, plus unlimited virtual and physical cards [9][10]
  • AI-powered receipt matching, transaction coding, and memo suggestions that auto-populate as soon as a card is swiped [9]
  • Policy agent that reviews every expense against company policy, auto-approves compliant transactions, and escalates only exceptions with full audit trail [9]
  • Expense submission via SMS, Slack, or Microsoft Teams in addition to web and mobile app [9]
  • Reimbursements for out-of-pocket expenses paid to employees' bank accounts in 1–2 business days [9]
  • Real-time spend reporting with custom dashboards, natural-language queries, and proactive overspend alerts [9]
  • Broader spend platform that includes AP automation, procurement, vendor management, and treasury alongside expense management [9]
  • Pro: Free plan includes corporate cards, expenses, and bill pay [11]
  • Pro: AI policy agent reviews 100% of expenses automatically [9]
  • Pro: Submit expenses via SMS, Slack, or Teams—no app required [9]
  • Pro: Broader spend platform covers AP, procurement, and vendor management [9]
  • Con: Budget tracking requires Ramp Plus at $15/user/month [11]
  • Con: NetSuite, Sage Intacct, and Dynamics integrations require a paid plan [11]
  • Con: HRIS syncs and auto-lock cards require a paid plan [11]
  • Con: Credit limits fluctuate daily based on connected bank balance [12]

Ramp's strength is breadth—it's not just an expense tool but a full spend management platform that includes AP automation, procurement, and vendor management alongside expenses. The AI policy agent is a differentiator, reviewing every transaction against company rules rather than relying on manual manager approvals.

The trade-off is that several features mid-market teams rely on—budget tracking, ERP integrations beyond QuickBooks and Xero, and HRIS syncs—require upgrading to Ramp Plus at $15/user/month plus a platform fee. [9][11]

Commonly compared to: Brex and BILL (for corporate cards and expense management), and SAP Concur (for enterprise expense programs).

  • Best for: Fast-growing companies that want corporate cards, expense management, and accounts payable on a single platform with AI-powered automation. [9][10]
  • Highlights: Corporate cards with built-in spend controls, AI-powered receipt matching and expense coding, a policy agent that reviews 100% of expenses and flags only exceptions, and submission via SMS, Slack, or Microsoft Teams. [9][10]
  • Ideal if you need: A card-first platform where expense management is one part of a larger system that also covers AP, procurement, and vendor management. [9]
Pricing
$0/user/month
Integrations
QuickBooks, NetSuite, Xero, Sage Intacct, Slack, & 100+ accounting tools.
Ideal Company Size
Startups to mid-market
Brex
Best for global teams
4.8 on G2
  • Corporate cards with customizable spend limits by role, department, or category, plus auto-approve for in-policy expenses and auto-decline for out-of-policy spend [13][14]
  • AI-powered expense reviews that auto-approve compliant transactions and surface only exceptions for human review, with clear visibility into why a transaction is flagged [13]
  • Auto-generated receipts and memos with OCR that matches receipts in any language or currency, plus automatic GL coding by department, project, and entity [13]
  • Live Budgets that let department heads set top-level budgets, provision spend to individuals or teams, and track usage in real time with anomaly detection [13]
  • Global reimbursements in 70+ countries in employees' local currency, with subsidiaries able to issue reimbursements from local bank accounts [13]
  • Expense submission and approval via Slack and WhatsApp, with in-app commenting on individual transactions [13]
  • Broader financial platform that includes bill pay, business banking with up to 3.68% yield, and treasury alongside expense management [14]
  • Pro: Free plan includes corporate cards, expenses, bill pay, and travel [15]
  • Pro: AI expense reviews with 99% average policy compliance rate [14]
  • Pro: Global reimbursements in 70+ countries in local currency [13]
  • Pro: Live Budgets with real-time tracking and anomaly detection [13]
  • Con: Live Budgets require Premium at $12/user/month [15]
  • Con: HRIS syncs and customizable ERP integrations require a paid plan [15]
  • Con: Credit limits fluctuate daily based on connected bank balance [16]
  • Con: Multiple expense policies and dynamic review chains require Premium [15]

Brex positions itself as a full financial stack for startups—cards, expenses, banking, and treasury in one platform. The AI expense reviews and 99% average compliance rate (per Brex's internal metrics) are notable, and the global reimbursement coverage across 70+ countries is broader than most competitors on this list.

Like Ramp, Brex gates budget management and HRIS integrations behind a paid tier, and credit limits fluctuate daily based on your bank balance. Teams that need predictable spending power or are past the startup stage may find the pricing structure adds up. [13][14][15]

Commonly compared to: Ramp and BILL (for corporate cards and expense management), and SAP Concur (for enterprise expense programs).

  • Best for: Startups and high-growth companies that want a global financial platform covering corporate cards, expense management, bill pay, and business banking. [13][14]
  • Highlights: AI-powered expense reviews that auto-approve compliant transactions, corporate cards with built-in policy controls, Live Budgets for real-time tracking, global reimbursements in 70+ countries, and OCR receipt matching in any language or currency. [13][14]
  • Ideal if you need: A financial platform built for startups that includes expense management as part of a broader stack with banking, treasury, and AP. [13][14]
Pricing
$0/user/month
Integrations
NetSuite, QuickBooks, Workday,SAP Concur, Slack, & global banking portals.
Ideal Company Size
Startups to mid-market
Expensify
Best for simple reimbursements
4.5 on G2
  • SmartScan receipt capture by photo, email forwarding (receipts@expensify.com), or text message; auto-extracts transaction details and categorizes expenses [17]
  • Bring-your-own-card support: link existing corporate cards from 10,000+ banks globally for automatic reconciliation without switching card providers [17]
  • Expensify Visa Commercial Card with cash back on US purchases; cash back first offsets the Expensify subscription cost, then flows to the company's bank account [17]
  • Concierge AI for automated expense categorization, policy violation flagging, rule enforcement, and error reduction [17]
  • Global reimbursements for employees and independent contractors in their local currency [17]
  • Chat-based collaboration directly on individual expenses to resolve questions in real time rather than through email follow-ups [17]
  • 45+ integrations including QuickBooks, NetSuite, Sage Intacct, Xero, Workday, and Gusto [17]
  • Pro: Bring-your-own-card from 10,000+ banks globally [17]
  • Pro: Expensify Card cash back can offset the subscription cost [17]
  • Pro: SmartScan receipt capture by photo, email, or text message [17]
  • Pro: 45+ integrations including major ERPs and payroll systems [17]
  • Con: No free plan; starts at $5/user/month [18]
  • Con: Pricing structure varies by card spend volume [18]
  • Con: Budget management, advanced approvals, and expense policies require Collect or Control plans [17]
  • Con: No department-level budget management on par with card-first platforms

Expensify's strength is accessibility—it has the lowest barrier to entry for teams that just need to start tracking expenses and submitting receipts. The bring-your-own-card support from 10,000+ banks means companies don't have to switch card providers, and the SmartScan receipt capture (by photo, email, or text) is one of the more flexible input methods on this list.

The trade-off is that several features mid-market teams expect—budget management, advanced approvals, and expense policies—require upgrading to the Collect or Control plans, and spend controls are primarily limited to the Expensify Card rather than extending across all connected cards. [17][18]

Commonly compared to: Zoho Expense (for budget-friendly expense management), and BILL and Ramp (for integrated cards and expenses).

  • Best for: Small and midsize businesses that want a mobile-first expense management tool with flexible card options, including the ability to link existing corporate cards from 10,000+ banks. [17]
  • Highlights: SmartScan receipt capture by photo, email, or text message; bring-your-own-card support from 10,000+ banks globally; Expensify Visa Commercial Card with cash back that offsets subscription costs; and Concierge AI for automated categorization and policy enforcement. [17]
  • Ideal if you need: A lower-cost entry point for expense management where employees can start submitting receipts immediately without switching corporate card providers. [17]
Pricing
From $5/user/month
Integrations
QuickBooks, Xero, Sage, TSheets, Gusto, & most business credit cards.
Ideal Company Size
Small to mid-market
Zoho Expense
Best for budget-conscious teams
4.5 on G2
  • Autoscan receipt capture with OCR that auto-categorizes and itemizes each expense, plus the ability to split or tag expenses across departments, projects, or cost centers [19][20]
  • Automated per diem calculations with pre-defined rules based on country, location, and trip details for regional compliance [20]
  • Corporate card management with real-time feeds that automatically match transactions to uploaded receipts for faster reconciliation [20]
  • Mileage tracking with four input methods across Android, iPhone, and Apple Watch [20]
  • Configurable approval workflows, expense policies, and audit rules with detailed audit trails for compliance [19][20]
  • Custom modules, workflow automation, webhooks, and configurable UI elements for businesses that need tailored expense processes [19]
  • Active-user pricing model: only employees who actually create expenses are charged, so admins and approvers who don't submit reports are free [21]
  • Pro: Free plan available for up to 3 users with core expense tracking [21]
  • Pro: Active-user pricing—admins and approvers aren't charged [21]
  • Pro: Automated per diem calculations by country and location [20]
  • Pro: Deep customization with custom modules and workflow automation [19]
  • Con: Corporate card feeds and multi-level approvals require Standard plan [21]
  • Con: Deepest value requires the broader Zoho ecosystem (Books, People, CRM) [19]
  • Con: No corporate card offering; relies on connecting existing cards [20]
  • Con: Travel booking, per diem, and live budgets require Premium plan [21]

Zoho Expense offers unusually deep customization at a low price point—custom modules, workflow automation, webhooks, and configurable UI elements that most competitors don't expose. The active-user pricing model is genuinely cost-effective for companies where only a portion of employees submit expenses regularly.

The trade-off is that there's no corporate card offering—you'll need to connect your existing cards—and the platform delivers its deepest value when used alongside other Zoho products like Zoho Books and Zoho People. [19][20][21]

Commonly compared to: Expensify (for budget-friendly expense management), and SAP Concur (for global compliance and customization).

  • Best for: Small and midsize businesses that want an affordable, highly customizable expense management platform with strong global compliance features and active-user pricing. [19][20][21]
  • Highlights: Autoscan receipt capture with OCR, automated per diem calculations by country and location, corporate card reconciliation with real-time feeds, mileage tracking across multiple input methods, and active-user pricing starting at $4/user/month. [19][20][21]
  • Ideal if you need: A low-cost expense management tool with deep customization options and native integration with the broader Zoho ecosystem (Zoho Books, Zoho People, Zoho CRM). [19][20]
Pricing
Free (3 users); from $4/user/month
Integrations
Zoho Books, QuickBooks, Xero, Sage, Microsoft Dynamics, & Google Workspace.
Ideal Company Size
Small to mid-market