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How to streamline your accounts payable approval process

How to streamline your accounts payable approval process

Brendan Tuytel
Contributor
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If you use a manual process for approving vendor invoices, you already know the headaches that come with it.

Moving to an electronic payment process can do more for your business than make that process digital. It can automate the accounts payable approval process, sending payable invoices to the right people and managing the approval workflow with one software solution.

This article will walk you through the benefits of automating your accounts payable approval process and show you how to do it.

What is approval in accounts payable?

For businesses that receive invoices, it's necessary to verify that each invoice is billing for the correct amount and is accurate for what was received. 

Approval means that everyone (including an accounts payable team, the billed department, and other stakeholders) has reviewed the invoice and verified it as correct using a set process.

Once an invoice has been verified, it is "approved" and ready to pay.

Examples of when an invoice may be unapproved are:

  • Duplicate invoices
  • Incorrect billing amounts
  • Incorrect line items
  • Discrepancies with a purchase order

Explaining the accounts payable approval process

The accounts payable process is the steps a business takes to verify an invoice before making a payment. 

How the approval process looks varies from business to business. A company processing a large quantity of high-value invoices will have more protections in its payment approval process than a business processing a handful of small invoices.

The process should involve multiple parties as more sets of eyes with different knowledge of the situation gives the best chance at catching errors before they have an impact.

Generally, the accounts payable team or finance department leads the process and depends on the billed department or project manager to confirm the line items were received and accurately billed. Additional details like vendor information, bill date, and due date should also be confirmed to ensure payments are made to the proper party on time.

A common tactic businesses use if they send purchase orders is two-way matching or three-way matching. This is when an invoice is reviewed against the purchase order for differences between what was ordered and what's on the supplier invoice.

What's essential is that the accounts approval process is standardized and routinely followed. Everyone should be on the same page about their responsibilities so the process is thorough and runs efficiently.

Benefits of automating the accounts payable approval process

1. Standardize your AP process

No matter how an invoice arrives, by email or snail mail, electronic invoicing can automate the process.

Invoice data is read by optical character recognition (OCR) software and entered automatically. That data is checked and matched against purchase orders to flag potential problems. Users check the process and send the invoice on its way.

2. Route approvals to the right people automatically

When you automate the approval process, the system will automatically check each invoice against the workflows you provide and route it to the needed people. Payable automation technologies streamline the process of collecting invoice approvals with ease.

3.Request approvals electronically (and remotely)

With electronic approval, an employee can work from anywhere. Request and receive approvals on your mobile phone.

4. Always know where approvals are in the process

Is there a holdup somewhere? Check the status of an approval any time you want to. Automation software will locate the invoice, show you where it was directed, and let you know what steps are still needed. Send a notification reminder from the app and collect that approval without looking up an email address/

5. The amount flows from approval to payment automatically

Another great feature of electronic invoicing is that each transaction amount is filed with each invoice as soon as it arrives. Invoice automation tools integrate with digital payment options and accounting software.

In other words, the invoice moves from initial data capture to approval to payment to your accounting books without anyone having to enter that data again. This significantly reduces the chance of human error.

6. Manage all questions, communication, and documentation digitally

Implementing an electronic invoice processing solution means that every question and reply about that invoice is stored digitally with the invoice itself. If you ever need to look up a previous transaction, all that detailed back-and-forth is recorded in digital, searchable storage and linked indelibly to the correct invoice.

7. Store approvals in a permanent audit trail

All supporting documentation is indexed in a permanent, transparent audit trail. Don't underestimate this advantage to your accounts payable department or business processes.

Having a reliable audit trail has helped companies partner with larger firms and suppliers, helped them decrease the time, stress, and expense of being audited, and even helped them obtain better financing terms.

How to streamline your accounts payable approval process

Streamlining your accounts payable approval process doesn't have to mean doing a complete overhaul. Use these four tips to start making accounts payable process improvements right away.

1. Centralize invoice intake

Every accounts payable workflow needs a launching point that signals to the team that the process needs to begin. This should be when an invoice is received.

If invoices are coming into multiple different places, there's a high likelihood that something gets missed.

To centralize invoice intake, determine where you want invoices coming in and communicate it to your vendors. The most likely solution is an email address monitored by someone on the accounts payable team.

2. Move to electronic invoicing

Entering paper invoices is an additional step, while electronic invoices are already digitized and primed for entry into your accounting system.

Electronic invoices streamline the matching process. They can be automatically checked against a purchase order, saving you an extra step.

Reach out to your vendors to see what it would take to move to receiving electronic invoices. If there's any friction, consider using an AP tool with optical character recognition, which can turn a photo of a paper invoice into readable text that is entered into your accounting system.

3. Have separate workflows for invoices with and without purchase orders

A purchase order helps streamline the accounts payable approval process. Having a document you can refer to match the details means less time verifying that information elsewhere.

The approval process without a purchase order should be more robust and include more verification steps to verify its accuracy.

With a purchase order, you can save steps in your approval process. This lets your team spend their time where it's most valuable and where it's likely to catch a discrepancy.

4. Standardize the invoice approval workflow

Role accountability is the key to a smooth-running account approval process.

Businesses should have an accounts payable policy which outlines their standard procedures and documents the approval process. Every team should be trained on this process so they know what tasks they're responsible for.

If done correctly, the invoice approval process is like an assembly line. They constantly move through the process, with each person jumping on their responsibility when it's their turn. 

Ready to automate your AP approval process with BILL?

BILL helps teams like Bombas and Marine Layer spend 50% less time on their accounts payable process.*

With customizable controls and workflows, you get to define how the platform works for you. Enter as many approval controls and rules as needed and let the system handle them easily.

Streamline each step of the approval process to save time and effort. Automated matching with purchase orders speeds up verification, and custom workflows keep invoices constantly moving through the pipeline.

Ready to see it in action? Sign up for a risk-free trial and pay your first bill in minutes.

*Based on a 2021 survey of over 2000 BILL customers

AP approval process FAQ

Who approves accounts payable?

Approval in accounts payable is a team effort. Ideally, multiple people are involved in approving an invoice for payment.

For example, if the IT team orders a new batch of laptops, they should be involved in the approval process. They'd be the ones to confirm how many laptops were received and whether the order was completely fulfilled.

While the AP team spearheads the accounts payable approval process, other people involved in the purchase should provide another set of eyes.

How long does accounts payable approval take?

The accounts payable process can be speedy or take a long time. What determines this is how many people are involved, how many invoices are being approved, how complex the invoices are, and whether there are supporting documents (like a purchase order).

Your goal is to keep your vendors happy. If you're consistently making payments close to the deadline, consider reworking your process or looking for a new accounts payable solution with automation.

What is an automated accounts payable approval process?

An automated accounts payable process reduces manual inputs by relying on technology to complete some steps.

Automation is used at many points of the approval process. It's possible to set up automation that enters invoices as soon as they're received, notifies stakeholders when they're needed for approval, makes payments once an invoice is approved, and more.

How can BILL help get bills approved and paid faster?

The BILL financial operations platform is cloud-based. This enables any authenticated approver or payer in your system to access your company’s account from any location, as long as you have access to the internet. If your CFO is traveling, you don’t have to wait until they return before the stacks of checks can be signed. The approver can log into BILL using their laptop, or the BILL mobile app, to review all outstanding bills that need to be approved. Not only can bills be approved with a click of a button, they can also be paid as well. Learn more about payment approvals in BILL.

This benefit is not limited to traveling employees. The cloud-based functionality can be leveraged for companies that have locations in different parts of the world.

Learn about all of the AP functionality you can leverage on-the-go through our accounts payable automation solution.

Author
Brendan Tuytel
Contributor
Brendan Tuytel is a freelance writer, who writes content for BILL. He draws from his studies of economics and multiple years of bookkeeping experience where he helped businesses understand and measure their financial health.
Author
Brendan Tuytel
Contributor
Brendan Tuytel is a freelance writer, who writes content for BILL. He draws from his studies of economics and multiple years of bookkeeping experience where he helped businesses understand and measure their financial health.
Get more from BILL
Subscribe to finance insights and thought leadership content delivered straight to your inbox.
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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