ERP integration: what your business needs to know

Key takeaways

• ERP integration connects your core business systems so data flows automatically between finance, sales, operations, and more, cutting manual work and improving accuracy.

• The right integration method (point-to-point, iPaaS, or ESB) depends on your systems, scale, and how much control you need.

• Airwallex integrates with leading ERP systems like NetSuite, Xero, and QuickBooks to automate reconciliation, sync multi-currency payments, and simplify global finance operations.

Your finance team is probably spending hours copying payment data from one system to another. If your ERP (enterprise resource planning) system isn't connected to the rest of your software stack, that's usually what happens. Every month, you get the same manual processes, the same delays, and the same risk of human error.

ERP integration fixes that by connecting your core systems so they work together. Payments, accounting, payroll, inventory, and customer data all flow into your ERP in real time. That cuts admin, speeds up reconciliation, and gives you clearer insights to make better decisions. In this guide, we'll walk through what ERP integration is, the main ways to connect systems, which tools usually integrate with an ERP, the benefits and challenges, and how to connect your payments to your ERP.

What is ERP integration?

ERP integration connects your ERP system with the other software your business uses day to day: accounting tools, eCommerce platforms, CRM systems, payment platforms, or payroll software. Think of it like a universal translator between all your business tools, so they can share information without anyone having to move it across by hand. This connection usually happens through APIs (application programming interfaces) or pre-built connectors that let systems exchange data automatically.

When those tools are connected, you get a single source of truth. A payment made through your online store can trigger updates across your ERP automatically, which makes payment processing and accounting simpler at the same time. An invoice issued from your ERP can sync with your expense or payroll system. Your finance team no longer has to chase missing details or enter the same information into multiple tools.

The practical benefit is simple. You reduce admin, improve data accuracy, and get the real-time visibility you need to make faster, better-informed decisions. Once that makes sense, the next question is how it works in practice.

ERP integration methods

Not all ERP integrations work in the same way. The right option depends on how many systems you're connecting, how much flexibility you need, and whether you want to manage the integration yourself or use a platform. Most integrations fall into one of three categories: point-to-point, iPaaS, or ESB.

Point-to-point integration

Point-to-point integration creates a direct connection between two systems, like a dedicated phone line between two offices. Your payment platform talks straight to your ERP through an API, with no middleman involved. It's simple to set up when you only need to connect two or three systems, and it gives you full control over how data moves.

But it doesn't scale well. If you have five systems, you need 10 separate connections. Add a sixth, and that jumps to 15. Every new tool adds more complexity, and maintaining all those connections can turn into a full-time job. Point-to-point works best for small businesses with a limited tech stack and no plans to add more tools soon.

Integration platform as a service (iPaaS)

iPaaS is cloud-based middleware that acts as a central hub for all your integrations, like a switchboard routing calls between any office in the building. Instead of building separate connections between every pair of systems, you connect each tool to the iPaaS platform once, and it handles the data routing from there.

Most iPaaS platforms come with pre-built connectors for popular tools like NetSuite, Xero, Shopify, and Salesforce. So when a new sale comes through your eCommerce platform, the iPaaS can trigger an inventory update in your ERP and a payment record in your accounting software, all through one platform. This is the option most growing businesses choose because it scales without piling on complexity.

Enterprise service bus (ESB)

An ESB is an older, on-premise middleware solution. Think of it as a shared highway with on-ramps for each system. It used to be the standard choice for large enterprises with complex legacy systems before cloud-based options became mainstream. ESBs offer deep customisation and can handle high transaction volumes, but they need significant IT resources to implement and maintain.

These days, ESBs are gradually being replaced by iPaaS solutions. Unless you're working with legacy infrastructure that can't move to the cloud, iPaaS is usually the more practical choice.

Deployment models: Cloud, on-premise, and hybrid

Beyond the integration method, you also need to think about where your systems are hosted. Cloud-based setups connect online tools through APIs or pre-built connectors. They're scalable, easy to maintain, and work well for remote teams. On-premise setups are hosted locally and maintained in-house, which gives you full control over security and customisation but comes at a higher cost. Hybrid models mix both, and that's common for businesses moving from legacy systems to modern platforms.

Here's how the three integration methods compare:

Once you know how systems connect, the next step is figuring out which systems are worth connecting in the first place.

Common systems that integrate with ERP

An ERP gets a lot more useful when it's connected to the tools your teams use every day. The most common integration targets are CRM and sales tools, payment and accounting platforms, eCommerce systems, HR and payroll software, and business intelligence tools. Here's what each one looks like in practice.

CRM and sales tools

When you connect your CRM to your ERP, customer data, deal stages, and revenue forecasts flow straight into your finance system. If a sales rep closes a deal in Salesforce or HubSpot, the ERP can create the invoice without anyone having to enter the details again. Finance sees the revenue right away, and sales doesn't have to chase paperwork.

Payment and accounting platforms

This is where transaction data, invoice processing, and reconciliation come together. When your payment platform is integrated with your ERP, incoming payments are logged and matched to invoices automatically. Outgoing payments follow approval rules and sync in real time. Common targets include Xero, QuickBooks, and NetSuite. We'll go deeper into payment integration later in this article because it's where most businesses see the biggest time savings.

eCommerce, HR, and business intelligence

For eCommerce businesses, connecting your storefront to your ERP keeps orders, inventory, and fulfilment data in sync. When a customer places an order on Shopify, the ERP updates stock levels and triggers the accounting entry, with no manual handoff needed. HR and payroll integrations keep employee data, timesheets, and salary payments aligned with your finance records. And BI tools like Tableau or Power BI can pull live data from your ERP to power dashboards and reports, so you're always working with current numbers.

Now that the connections are clearer, the next question is whether your business needs them.

Does your business need ERP integration?

If your finance team is entering the same data into multiple systems, you're already paying the price for poor integration. You might not feel it straight away, but the manual work builds up over time. It slows your processes down, introduces errors, and leaves you with reports you'll never be 100% confident in.

You might recognise some of these signs:

• You rely on spreadsheets to fill in the gaps between systems. This often leads to outdated or duplicated data.

• You've no real-time view of your cash flow. Transactions are recorded late, making it hard to make confident decisions.

• You're struggling to keep up with international payments. Manually reconciling currencies and fees slows down your close.

• Your team spends more time on admin than analysis. Instead of using data to plan ahead, they're stuck fixing mismatches between tools.

Picture an eCommerce business where orders, inventory, eCommerce payment processing, and accounting all sit in different places. Every sale creates a paper trail that someone has to follow by hand. It's tedious, mistakes build up, and your finance team ends up spending time on busywork instead of analysis.

When you integrate your tech stack with an ERP system, those steps happen automatically. Sales feed into inventory. Payments sync with accounting. Your finance team can stop playing catch-up and start focusing on what comes next. If any of those signs sound familiar, it's worth taking a closer look at the benefits of integration.

How ERP integration benefits your business

When your tools are connected, your team spends less time double-checking data and more time using it to make better decisions. That's what ERP integration gives you. It connects sales, finance, operations, and customer support into one system, so everyone works from the same real-time information.

That kind of accuracy takes a lot of the guesswork out. If a sales team closes a large deal, finance sees the numbers straight away, and operations can start planning fulfilment. Nothing gets lost in email threads or missed in spreadsheets. Research from BlackLine found that finance teams spend up to 30% of their time on manual data collection and validation. That time could be redirected to analysis and planning.¹

Here's how connected systems change the day to day for your team:

More accurate data

When one system holds your records, you remove duplication and human error. That gives you more confidence in your numbers, whether you're planning budgets or reporting to investors.

• Example: Accounts payable avoids a costly double-payment to a supplier because the invoice and payment history are clearly tracked in one place.

Faster workflows and continuous reconciliation

Every part of your operation moves faster when data flows between systems. Invoices go out sooner, expenses are tracked in real time, and there's less back-and-forth between teams.

The bigger shift is moving from batch reconciliation to continuous reconciliation. Traditionally, finance teams spend three to five days at month-end matching transactions to records. With integrated systems, transactions match as they happen. A payment received today is reconciled today, not three weeks later.

• Before: Your team spends two days at month-end reconciling expenses, chasing down receipts, and fixing mismatches.

• After: Transactions are matched automatically as they occur. Month-end close takes hours, not days.

Better decision-making

You can spot trends faster with live dashboards and reporting tools. Whether you're forecasting cash flow or evaluating a new supplier, you'll have the data to back your choices.

• Example: A CFO sees rising payment delays in one region and quickly adjusts credit terms to protect cash flow.

Increased productivity

Automating the repetitive work, like reconciling payments or updating stock levels, gives your team more time to focus on strategy and growth.

• Example: Instead of spending two days reconciling monthly expenses, the finance team closes their books in a few hours.

Scalability

Connecting systems through an ERP helps you scale faster because manual processes are removed. You can handle more transactions, users, and complexity without rebuilding your tech stack. And when your systems stay in sync, your customers feel the difference too. Orders are processed faster, support teams have full context, and finance can respond quickly to queries.

• Example: A startup expands into three new markets without adding new systems or finance headcount.

Those benefits are real. But getting there isn't always simple, so it's worth knowing what to watch out for.

Challenges and risks of ERP integration

ERP integration can unlock big wins. But getting there isn't always smooth. If you've ever tried to get multiple systems to talk to each other, you'll know exactly what that feels like.

Here are a few common bumps in the road, and what helps with each one:

It can get expensive. Developer hours, software upgrades, and data cleanup all add up. If you're working with older systems, the costs can climb quickly.

• What helps: Start with the biggest pain points. Payments and accounting are a good place to begin. Prove the value there, then scale.

Your data might be a mess. You can't sync data you can't trust. Outdated formats, duplicates, or missing fields will only cause problems later.

• What helps: Audit your data before you begin. Clean it up, run test imports, and check how fields map across systems.

People need time to adjust. The tech might be sorted, but that doesn't mean your team is ready. If the setup feels clunky or confusing, they'll fall back on manual work.

• What helps: Get buy-in early. Show people how it makes life easier. Then back that up with training that's relevant to their role.

Not all software plays nicely. If you're using niche or legacy platforms, integration can get tricky. APIs might be limited. You may need workarounds.

• What helps: Choose modern tools built with integration in mind. Look for open APIs, good documentation, and responsive support.

Once you've thought through those risks, you're ready to start connecting systems. Payments are usually the best place to start.

How to integrate payments with your ERP

If your ERP and payment systems don't talk to each other, your finance team ends up doing the translating. That usually means entering data again, checking amounts twice, and chasing missing invoices. It takes time, creates errors, and is completely avoidable.

When you connect payments to your ERP, you create a direct link between transactions and records. Incoming payments are logged and reconciled automatically. Outgoing payments follow approval rules and sync in real time. You get full visibility into your cash flow, and you cut down on the admin that's slowing you down.

To get started:

1. Map your payment workflows. Before you connect anything, take stock. How do invoices get issued? Who approves payments? Which steps still depend on spreadsheets or email chains? Work out which data fields need to sync, like invoice numbers, currency, payment status, and GL codes, so nothing gets lost in translation.

2. Choose a payment provider with ERP integration support. Look for a provider that connects with your ERP, either directly or through an API, and supports popular payment gateways. When you're comparing options, check for:

• Pre-built connectors for your specific ERP (NetSuite, Xero, QuickBooks)

• Clear API documentation and developer support

• Multi-currency support for international payments

• Automated reconciliation features

• Real-time transaction tracking

3. Get the data flow right. Decide what data moves where, and when. A payment status update should trigger an invoice to be marked as paid in your ERP immediately, not three days later.

4. Keep your team in the loop. Make sure everyone knows what's changing, why it matters, and how to use the new setup. Give them access to support and training from your ERP and payment providers.

GL mapping and auto-categorisation

One of the biggest time-savers in payment-ERP integration is automatic GL (general ledger) coding. Modern payment platforms can pre-code transactions to GL accounts at the point of purchase, so they arrive in your ERP already categorised. Think of it like having your receipts sorted into the right folders before they even reach your desk.

For example, when an employee uses a Corporate Card to pay for software, the transaction is automatically coded to the IT budget line in your ERP. No one needs to categorise it by hand later, and your month-end close gets faster.

Multi-currency and cross-border payment sync

If you're operating across borders, your ERP needs to handle multiple currencies, FX conversions, and local payment rails. A modern payment platform can sync multi-currency transactions to your ERP with the correct exchange rates and local currency amounts, so your records stay accurate without manual conversion.

Here's what that looks like in practice. You pay a supplier in EUR from a GBP account. The ERP automatically records both the GBP cost and the EUR amount, plus the exchange rate used. Your finance team doesn't have to look up rates or calculate conversions. It's all captured at the point of payment.

Bring your finance systems together with Airwallex

ERP integration gives your team the tools they need to move faster, spot issues sooner, and make better-informed decisions. When your payments, accounting, and operations talk to each other, everything runs more smoothly, from cash flow tracking to month-end reporting.

You also don't need a full rebuild to get started. Start with the areas causing the most pain. Focus on integrations that reduce admin, improve accuracy, and give you clearer visibility into your finances.

Airwallex takes an API-first approach to ERP integration, with pre-built connectors for NetSuite, Xero, and QuickBooks. Your payments, invoices, and GL entries stay in sync without manual work. Multi-currency transactions are recorded with accurate exchange rates. Reconciliation happens automatically, not at month-end. You can also manage global spend from one platform. We process over US$150 billion in annual payments volume across 60+ markets.

Frequently asked questions

What is an example of ERP integration?

A common example is connecting your eCommerce platform to your ERP. When a customer places an order on Shopify, the ERP automatically updates accounts receivable, adjusts inventory levels, and creates the corresponding GL entry, all without anyone having to re-enter data.

How long does it typically take to implement an ERP integration?

It depends on your systems and the scope of the project. A simple point-to-point integration can take a few weeks, whilst iPaaS setups are typically moderate in complexity. ESB implementations for large enterprises may take several months.

What are the main ERP integration methods?

The three main methods are point-to-point (direct connections between two systems), iPaaS (a cloud-based hub with pre-built connectors), and ESB (on-premise middleware for enterprise systems). Most growing businesses choose iPaaS for its scalability and ease of use.

How can I keep data secure during ERP integration?

Choose vendors that follow recognised security standards, such as ISO 27001 or PCI DSS. Make sure data's encrypted in transit and at rest, and limit access to only those who need it.

What systems commonly integrate with an ERP?

The most common are CRM and sales tools, accounting and payment platforms, eCommerce systems, HR and payroll software, and business intelligence tools. CRM integration keeps customer and revenue data in sync, whilst payment integration automates reconciliation and cash flow tracking.

Sources and references

• https://www.blackline.com/resources/research-reports/finance-and-accounting-teams-are-ready-for-continuous-accounting/