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What is ERP integration? A guide for small and mid-sized firms

What is ERP integration? A guide for small and mid-sized firms

Brendan Tuytel
Contributor
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Modern businesses are built on specialized departments, often utilizing dedicated tools. Despite the fact that their workflows look very different, fulfilling different needs, it comes together to create cohesive day-to-day operations.

But if the work is being done in siloed platforms, you could be missing out on crucial synergies that drive optimal performance.

This is where enterprise resource planning (ERP) integration comes in. When your ERP system connects with the rest of your tech stack, you get a seamless flow of data and unified, comprehensive reporting.

Unsure of what ERP integrations are, how they work, and why they matter? Read on for an overview of how they could unlock a higher level of performance for your business.

Key takeaways

ERP integration connects all your different business tools so they can share information automatically without manual typing.

Linking your systems helps you see the big picture and make better decisions using accurate, real-time data.

Automating how data moves between programs saves a lot of time and prevents common human mistakes.

What is ERP integration?

ERP integration is the process of connecting an ERP system (e.g., NetSuite, Sage Intacct or Business Central) to the rest of your tech stack used across your operations. These connections keep data moving freely between platforms, eliminating the need for manual entry.

An ERP system is the central platform businesses use to manage their core operations, including accounting, financial reporting, procurement, and inventory. For an ERP system to be effective, it needs to connect with the specialized platforms used for tasks like payroll, expense management, or customer relationship management (CRM). 

For example, if a vendor invoice is processed by an accounts payable automation platform, the ERP integration sends that information through to the accounting system, saving you the effort of entering it manually. The ERP integration saves you time and reduces errors that come with manual entry.

Key aspects of ERP integration

Effective ERP integrations don’t just connect systems—they can transform the way a business operates in several key ways.

Automated sync

A well-integrated ERP environment keeps data in sync with real-time updates. When anything happens in one platform, it’s automatically reflected across your entire ecosystem.

Say that a purchase order is approved and fulfilled. Once it’s submitted, the inventory level adjusts automatically, the liability is recorded in accounts payable, and in turn, your accounting platform reflects that. 

The live updates keep every team operating off the same information. When information is fast-moving, real-time visibility can be the difference between a confident decision and a costly one.

Process automation

System integrations maximize the ROI of your tech stack by allowing data to flow “touchlessly” between systems. Whether it’s an invoice being processed with optical character recognition (OCR) or an expense report going through automated rule checks, these tasks are tackled without having to lift a finger. You’re effectively maximizing the automation capabilities of each platform you use by allowing that work to flow through each platform.

Elimination of silos

As businesses grow, they often implement “best-of-breed” solutions for each team. The result is that different teams end up using different tools, each with its own set of data that’s siloed from the rest of the operations.

When this data interacts, you get a better picture of how the different facets of your operations interact. You could identify how a trend in sales impacts headcount to create a hiring plan, or when you typically have a surplus of inventory relative to sales volume to plan promotional periods.

The result is better overall decision-making. You aren’t making choices based on siloed data, you’re making decisions based on the bigger picture.

Improved accuracy and compliance

Manual data entry is a common source of financial errors. When employees retype information, you have a higher risk of mistakes like duplicate entries, incorrect details, or missed transactions altogether.

The more human touch points you have, the more risk you take on due to human error.

Automated ERP integrations help minimize this risk, giving you clean, consistent financial data with a high degree of visibility and traceability.

Enhanced reporting

Interconnected systems improve your reporting capabilities by creating comprehensive reports, populated with the most recent data from every integrated system. No more manually compiling reports and manually reconciling discrepancies; you instead have complete confidence in what’s being reported.

Month-end close is faster, reporting is more accurate, and budgets and forecasts are constantly kept up-to-date. 

What are examples of ERP integrations?

ERP integration shows up across nearly every function in a modern business. Here are some of the most impactful use cases for small and midsize businesses.

Core financials: AP & AR automation integration

Accounts payable and accounts receivable automation are two common, high-value ERP integrations a business can implement.

When your AP automation platform connects directly to your ERP, vendor invoices are captured, entered, and sent to the necessary stakeholders for approval. Once the invoice is approved and the payment is processed, your accounts payable and accounting platforms are updated to reflect the changes. This cuts down the chance of entry or payment errors, plus the streamlined experience reduces the likelihood of a late payment.

With AR automation, payment status and outstanding balances are kept up-to-date with no manual updates needed. Your team will always be on the same page regarding what’s been paid and what needs follow-up.

BILL’s AP and AR platform integrates directly with leading ERP systems and accounting software, including QuickBooks, Sage Intacct, Oracle NetSuite, Microsoft Dynamics, Acumatica, and Xero. This makes it easy for SMBs and mid-market organizations to automate their financial workflows without complex custom development.

Spend management: expense and corporate cards integration

There are two aspects of expense reporting that ERP integrations assist with: real-time reporting and streamlined approval processes. 

Real-time reporting is essential for planning (and sticking to) budgets, as well as mastering your cash flow. If ERP integrations keep your expense category numbers up-to-date, you can confidently monitor how well the business is sticking to its budget.

On the other side are expense approvals. Leveraging tech like corporate cards with set budgets and approval thresholds helps teams procure what they need when they need it, so long as it falls within company policy.

With these two pieces working in tandem, you can monitor and enforce budget policies in real-time without having to chase down receipts or manual expense reports.

BILL Spend & Expense integrates with major ERP and accounting platforms, so corporate card transactions and employee reimbursements flow directly into your books without manual data entry.

Customer relationship management (CRM) integration

Connecting your CRM platform to your ERP gives every team insights into how customers are interacting with the business, combining deal history, invoicing, payment status, and core account information in one place.

When a deal closes in your CRM, the ERP integration can trigger invoice creation in your ERP. And when that invoice is paid, the CRM is updated to let the sales team know.

This cross-functional integration helps the work that teams do empower others. The ERP integration reduces friction between the teams that generate revenue, record revenue, and fulfill the obligations of a sale.

Benefits of effective ERP integration

A well-executed ERP integration setup improves operations across teams and departments, with measurable impacts on your efficiency and unlocked synergies.

Improved data accuracy and consistency

By eliminating manual entry, integrations ensure data flows seamlessly and accurately across all platforms. This establishes your ERP as a reliable "source of truth," giving you total confidence in your numbers during high-stakes periods like tax season or board reporting.

Enhanced operational efficiency and productivity

Automation reclaims hours previously lost to manual data transfers and reconciliation. Finance teams can shift their focus from menial data entry to high-value analysis, while managers gain the real-time visibility needed to make faster, more informed decisions.

Streamlined financial processes and reporting

Integrating your AP, AR, and accounting systems drastically accelerates month-end close by syncing data directly to the general ledger. This converts a complex data-collection chore into a simple review process, providing comprehensive, up-to-the-minute reporting at any time.

Best practices for ERP integration strategy

Effective ERP integration strategy is as much about strategy as it is about software. To ensure a seamless transition, consider these essential guidelines from the outset.

Define measurable goals

To ensure a successful ERP integration, establish measurable goals to serve as a constant "guiding star" for every technical decision. Instead of vague objectives, use specific quantifiable targets to track your progress and resolve any roadblocks during execution.

Prioritize data hygiene

The quality of an ERP integration depends entirely on the integrity of your data, so you must audit for duplicates, inconsistencies, and outdated records before syncing systems. Treat the launch like a move: it is the perfect opportunity to establish clear data ownership and a "source of truth" rather than carrying old pain points into a new environment.

Select the right integration method

Choosing the right ERP integration method requires balancing your immediate technical resources with your long-term business scalability. While pre-built solutions offer a fast, simple setup, custom-developed APIs provide the flexibility needed to support a complex, growing ecosystem.

Implement in phases

Instead of a high-risk "big bang" integration, adopt a phased approach by starting with core financial tools like accounts payable or receivable. This iterative process allows for rigorous testing and user feedback at each stage, reducing frustration and clearly demonstrating value before scaling further.

Rigorous testing

Avoid the "greater headache" of live errors by never assuming an integration is functional until it has been rigorously validated in a staging environment. If you are implementing in phases, test each new addition individually and then perform a full-system regression test to ensure new connections haven't disrupted preexisting ones.

Focus on security and compliance

Connecting systems creates new vulnerabilities, making it critical to encrypt data in transit and enforce strict role-based access controls. Before going live, verify that your handling of customer and financial data meets all industry-specific regulatory standards to avoid compliance risks.

Change management and training

To maximize your investment, prioritize comprehensive training and open Q&A sessions to ensure the team is confident using the new technology. Clear communication about how these integrations streamline specific roles will drive user adoption and ensure the platform is utilized to its full potential.

Monitor and refine

The first few months of a new ERP integration are a critical learning period for identifying unforeseen technical friction or user pain points. Establish a regular review cadence to gather team feedback, troubleshoot blockers, and audit your progress against measurable goals to determine if the system requires further optimization.

BILL integrates with leading accounting systems and ERPs.

Common challenges in ERP integration

A well-planned ERP integration setup process can still run into obstacles. Here are some of the common challenges you may encounter in the rollout.

Ignoring data standardization

If your systems have different formats or naming conventions, you’ll hit road bumps in the integration process. ERP integrations rely on consistent formatting to match data and harmonize reporting. 

If you don’t take the precaution of sorting the formatting, you’ll get mismatched data and missing data that is costly and painful to clean up.

Take the initiative to sort out data formatting before you start the rollout process. Standardize your naming conventions and resolve inconsistencies to make sure the rollout is focused on sorting out technical hiccups, not formatting issues.

Underestimating resource requirements and costs

ERP integrations can become a lengthy process as you work through the technical requirements. It’s not uncommon for the scope to change as you uncover different needs or limitations.

There are also hidden costs that come with testing, training, and ongoing maintenance. It’s not just the initial launch that comes with costs.

Try to take a realistic approach with a budget that includes implementation, customization, change management, and ongoing support for everyone using the platform. As you’re exploring the different integration methods, compare and contrast the costs of each to see what fits that budget.

Failing to involve key stakeholders early

ERP integration affects every department as it becomes the central place for reporting and workflows. Everyone, including finance, operations, sales, and HR, will need to buy into the platform for it to be most effective.

If these teams aren’t involved in the planning process, you risk creating an ecosystem that doesn’t meet their needs. And if the ERP platform doesn’t meet their needs, the adoption rate is going to suffer.

Instead, bring in key stakeholders early in the process to understand what they want to see from the platform. Get an understanding of what their needs and wants are to ensure the end results are satisfactory to everybody.

Choosing the right ERP integration method

Not all ERP integrations are set up the same. There are different integrations, each with its own tradeoffs around cost, complexity, flexibility, and scalability.

An overview of integration methods

The most common ERP integration methods are:

  • Point-to-point (P2P): While point-to-point connections offer a simple, direct integration between two systems, they become increasingly difficult to manage as you scale and introduce new platforms. 
  • Middleware: Middleware serves as a specialized translation layer that manages data transformation without altering core systems, making it an ideal solution for businesses navigating complex environments with numerous diverse applications.
  • iPaaS (Integration Platform as a Service): iPaaS is a cloud-based platform that enables rapid, scalable connections across multiple applications with minimal custom code, making it an increasingly popular choice for businesses seeking speed without heavy development overhead.
  • Direct integrations:Software providers build and maintain these out-of-the-box connectors to enable seamless platform integration with minimal configuration or manual intervention.

Factors to consider when selecting an integration method

There’s no single best choice when it comes to selecting an integration method. Instead, consider these factors to guide your decision-making:

Method Best For Business Type Pros Cons Example ERP Integration Solution
Point-to-Point Businesses with 1–2 simple integration needs and limited scale. • Fast and inexpensive for simple setups
• Full control without third-party dependencies
• Scales poorly; becomes a "web" that is hard to maintain
• Becomes untenable as more systems are added
Custom scripts or direct API connections between two specific applications.
Middleware Midsize to enterprise organizations with complex environments and dedicated IT. • Excellent for data transformation
• Centralized management for many integrations
• Costly and resource-intensive to implement
• Requires significant internal developer talent
MuleSoft
iPaaS SMBs and growing firms seeking a balance of flexibility and speed. • Low-code/faster implementation than custom dev
• Scalable cloud delivery
• Ongoing subscription costs impact TCO
• Canceling a subscription often requires a total rebuild
Celigo
Direct Companies seeking the most cost-effective, "out-of-the-box" solution. • Simplest and most cost-effective
• Maintained and updated by the vendor
• Less flexibility for highly customized workflows
• Not available for all platforms or specialized needs
BILL Integrations

3 Ways to Integrate Your Financial Back Office with BILL

You don’t need to build a custom ERP integration ecosystem to start taking advantage of the potential the technology offers. With BILL, you can start leveraging ERP integrations for some of the benefits without the lift.

To get the most benefit from the platform, integrate BILL with your financial back office in these three ways:

  1. Leverage direct, 2-way integration: With deep, bidirectional connections, data flows seamlessly both to and from BILL and your accounting software, with updates made in one system automatically reflected in the other.
  2. Use automated file-based integration: This is a flexible method for moving data like vendors, payments, or accounts between systems that lack a native “out-of-the-box” connection. Instead, exports are scheduled via SFTP or email at set intervals, only importing new or updated records. BILL’s custom file integration functionality also includes pre-built templates for systems like Yardi, Blackbaud, Restaurant365, and more to further automate this process.
  3. Build custom API integrations: Take advantage of BILL’s developer tools to create a tailor-made connection for your unique business needs.

Once done, you can start taking steps towards the untapped efficiency of ERP integrations and automation. Want to learn more? Request a demo to see how BILL can fit into your tech stack, including direct integrations with popular platforms like QuickBooks, Sage Intacct, Oracle NetSuite, Microsoft Dynamics Business Central, Acumatica, and more.

Confidently automate and control your business with BILL.

Frequently asked questions

What is the ERP integration approach?

An ERP integration approach is the overall strategy a business uses to connect each of its specialized platforms and tools to its ERP system. This covers everything from its integration method, its governance rules, and the project plan for implementation.

ERP integration approaches start with clear business goals, evaluating the existing options, and selecting the best approach for their needs.

What are the five stages of ERP implementation?

While the implementation process varies based on the method and provider, ERP projects often go through these five stages:

  1. Discovery and planning: Defining the goals, outlining the scope of the project, and selecting the methodology that will be used.
  2. Design: Configuring the system to match your business’s needs and processes, mapping the integrations for data flow.
  3. Development and testing: Building integrations, migrating data, and testing workflows.
  4. Go-live: Launching the system, running training sessions, and transitioning from your pre-existing processes.
  5. Post-implementation support: Monitoring your performance, measuring progress against your goals, resolving issues, and continuing to optimize the system over time.

What is the difference between ERP implementation and ERP integration?

ERP implementation refers to the process of deploying an ERP system. ERP integrations refers specifically to the technology used to connect that ERP system to other applications so data flows automatically. In other words, ERP integrations are one step in the ERP implementation process.

How long does ERP integration take?

The timeline for ERP integration varies based on the complexity of the setup and the methods being used. Pre-built native integrations can be quickly implemented and activated in a few days or even hours. But complex, custom integrations or multi-system iPaaS implementations could take weeks or months to roll out and start running. Using a phased approach helps you take advantage of ERP integrations early in the process without waiting for the project to reach full completion.

How do I know which type of ERP integration is right for my business?

There is no "one-size-fits-all" answer, but the right choice typically reveals itself when you weigh your internal technical resources against your long-term complexity.

  • Choose direct integrations if you are a small to midsize business looking for the fastest ROI with the least amount of "technical heavy lifting." These are ideal if you use popular, mainstream tools that your software provider already supports out of the box.
  • Choose iPaaS if your business is scaling rapidly and you need a flexible "middle ground." It offers the scalability of custom work without the massive overhead of maintaining unique code, making it the go-to for growing companies with diverse tech stacks.
  • Choose Middleware or Custom APIs only if you have a highly specialized environment or strict regulatory requirements that "standard" connectors can’t handle. This path requires a dedicated IT team and a larger budget, but it offers total control over how your data is transformed.

When is the right time to consider ERP integration?

The short answer is: the moment manual tasks begin to stall your strategic growth. You shouldn’t wait for a total system collapse to act; instead, look for these three red flags:

  • Data silos are leading to friction: If your sales team is chasing finance for payment statuses, or if your inventory levels never seem to match your accounting books, your "best-of-breed" tools have become departmental islands. Integration is needed to restore a single source of truth.
  • Reporting is a lagging indicator: If it takes your team two weeks after month-end to produce a comprehensive report, you are making decisions based on the "rearview mirror." You should consider integration when you need real-time visibility to stay competitive.
  • The "hidden cost" of manual entry is rising: When your skilled finance or ops professionals spend more time re-typing data and fixing "fat-finger" errors than they do on high-value analysis, your manual processes have become a bottleneck.
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.
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