Why are ecommerce businesses moving away from legacy ERP systems?

Ecommerce businesses are moving away from legacy ERP systems because they often become costly, complex, and difficult to customize for modern ecommerce workflows. Many brands now prefer flexible tools like Xero, QuickBooks, Linnworks, and ecommerce integrations to manage accounting, inventory, and order data more efficiently.

Is SMB accounting software enough for ecommerce businesses?

SMB accounting software like Xero or QuickBooks can be enough for many ecommerce businesses when it is connected with the right inventory, order management, tax, and reporting tools. However, businesses with highly complex manufacturing, global compliance, or multi-entity operations may still need a larger ERP system.

What is the best alternative to legacy ERP for ecommerce brands?

A practical alternative to legacy ERP is a connected stack of ecommerce tools, such as Shopify or Amazon for sales, Linnworks for inventory and order management, and Xero or QuickBooks for accounting. This gives ecommerce businesses more flexibility without the high cost of a full ERP setup.

Why do ecommerce brands use Xero or QuickBooks instead of Sage or NetSuite?

Ecommerce brands use Xero or QuickBooks because they are easier to manage, more affordable, and work well with many ecommerce apps and integrations. Compared to Sage or NetSuite, they can be a better fit for businesses that need flexible accounting and faster app connectivity.

Can Linnworks replace an ERP for ecommerce businesses?

Linnworks can replace some ERP functions related to inventory, order management, and multi-channel ecommerce operations. However, it is usually not a full ERP replacement by itself. Many businesses use Linnworks with Xero or QuickBooks to create a lighter and more cost-effective finance and operations setup.

When should an ecommerce business switch from legacy ERP to SMB accounting software?

An ecommerce business should consider switching when the ERP becomes too expensive, needs frequent customization, slows down operations, or does not connect well with ecommerce platforms and marketplaces. If the team is using only a small part of the ERP, a simpler accounting and integration setup may be more practical.

How can ecommerce businesses reduce ERP costs?

Ecommerce businesses can reduce ERP costs by replacing unnecessary ERP modules with focused tools for accounting, inventory, order management, and reporting. Using Xero, QuickBooks, Linnworks, and custom integrations can lower software, maintenance, and implementation costs.

Is QuickBooks or Xero better for ecommerce accounting?

Both QuickBooks and Xero can work well for ecommerce accounting. The better choice depends on the business's accounting needs, reporting requirements, marketplace setup, and integration preferences. For ecommerce brands, the key is not only the accounting software but how well it connects with sales channels, inventory systems, and payment data.

Why Ecommerce Businesses Are Moving from Legacy ERP to SMB Accounting Software

March 3, 2026 7 min read

Why E-Commerce Giants Are Ditching Legacy ERPs for Cost-Effective SMB Accounting Solutions

Today, I had an insightful call with a large e-commerce merchant who shared their experience managing operations across the UK, EU, and the USA.

This merchant uses Sage for inventory management and Shopify for e-commerce.

But here’s the twist: they decided to move on from Sage.

Legacy ERP vs SMB Accounting Software for Ecommerce

For many ecommerce businesses, the choice is no longer only between staying on a legacy ERP or investing in another expensive enterprise system.

A more practical option is to use specialized ecommerce tools with SMB accounting software.

Legacy ERP systems like Sage, NetSuite, and Business Central can be powerful, but they often become costly when the business needs frequent customization, marketplace integrations, inventory sync, or region-specific accounting workflows.

On the other hand, tools like Xero and QuickBooks Online work well when paired with ecommerce platforms, inventory systems, and automation apps.

This setup gives ecommerce brands flexibility without forcing every operation into one large system.

Area	Legacy ERP	SMB Accounting + Ecommerce Apps
Cost	Higher license and implementation cost	Lower subscription and app-based cost
Customization	Often expensive and slower	Easier with apps and integrations
Ecommerce fit	May need custom connectors	Works well with Shopify, Amazon, Linnworks, etc.
Accounting	Strong but complex	Practical for summarized accounting
Best for	Large, complex enterprise processes	Growing ecommerce brands needing flexibility

Why Are Ecommerce Businesses Switching from Legacy ERP?

The merchant needed stronger multi-channel inventory control across Shopify, Amazon, and regional marketplaces. In Sage, these workflows required extra effort, custom workarounds, and higher operational dependency.

Linnworks gave them a more practical way to manage orders, stock, and channels from one place.

These were exactly the type of operational challenges Linnworks is built to handle, especially for ecommerce businesses managing multiple sales channels and high order volumes.

The merchant decided to migrate from Sage to Linnworks, a solution specifically designed to efficiently manage platforms like Shopify, Amazon, and others.

For their HMRC compliance, they’ve chosen cloud SMB accounting on Xero. Xero will manage summarized SMB accounting, while order management will take place in Linnworks.

This created a lighter and more focused setup: Linnworks for order and inventory operations, and Xero for summarized accounting and compliance. Instead of relying on one heavy ERP for every workflow, the business could use specialized tools that were easier to manage and more cost-effective.

But that’s not all.

Let me tell you about another enterprise e-commerce merchant.

A CFO from a large enterprise with operations in 15 countries moved away from a fancy ERP system. Why? Cost and complexity. Instead, they adopted cloud SMB accounting software like Xero and QuickBooks Online.

Here’s the reason,

Extensive App Marketplaces & Cost-Effectiveness: Both Xero and QuickBooks Online offer extensive app marketplaces. These marketplaces provide access to business productivity tools at a fraction of the cost of traditional ERP systems.

Comparison chart showing traditional ERP systems versus SMB-focused accounting software features and pricing

In fact, the combined value of using Xero or QuickBooks Online along with approximately 10+ apps, often surpasses what legacy systems like Sage, NetSuite, or Business Central can deliver at a much lower price point.

An ecommerce business should start reviewing its ERP setup when the system becomes harder to manage than the problem it was meant to solve.

Common signs include:

The ERP needs too many customizations for simple ecommerce workflows.
Finance teams depend on manual exports and spreadsheets.
Marketplace, inventory, and accounting data do not sync properly.
The cost of support, maintenance, and changes keeps increasing.
Reporting is delayed because data is scattered across tools.
The team only uses a small part of the ERP but pays for the full system.

In these cases, moving to a focused stack such as Linnworks, Xero, QuickBooks, and ecommerce automation tools can be a better fit.

A practical ecommerce finance stack does not always need to be a full ERP. For many businesses, the better approach is to connect specialized tools around the actual workflow.

A common setup can look like this:

Sales Channels: Shopify, Amazon, WooCommerce, eBay
Order & Inventory Management: Linnworks or similar system
Accounting: Xero or QuickBooks Online
Automation Layer: Custom integrations for order sync, payouts, tax, fees, refunds, and reconciliation
Reporting: Dashboards for sales, margins, inventory, cash flow, and channel performance

This setup helps ecommerce teams keep operational data in the right system while sending clean, summarized accounting entries into Xero or QuickBooks.

The Growing Trend Toward Flexible Ecommerce Accounting Systems

After discussing this with several CFOs and e-commerce merchants, I noticed a growing trend, particularly in the UK.

Diagram illustrating cost savings and scalability benefits of shifting from legacy ERP to SMB cloud accounting software

Companies are deliberately steering away from complex, expensive ERP systems. Instead, they’re embracing SMB-focused software that delivers high value, simplicity, and exceptional customer service.

Would you agree?

As more businesses transition to modern SMB Accounting -focused software, the advantages of customization, affordability, and simplicity are becoming undeniable.

Have you experienced this shift in your business?

What’s your take on moving away from legacy ERP systems to embrace these modern, cost-effective solutions?

Migration Checklist: Legacy ERP to SMB Accounting Software

Before moving away from a legacy ERP, ecommerce businesses should carefully plan the migration.

A simple checklist:

Review current ERP workflows and identify what is actually being used.
Separate operational workflows from accounting workflows.
Decide which system will manage inventory, orders, tax, and finance.
Map data flow between Shopify, Amazon, Linnworks, Xero, or QuickBooks.
Clean customer, product, vendor, and chart of accounts data.
Test order sync, refund sync, payout reconciliation, and tax handling.
Move opening balances and validate financial reports.
Run both systems in parallel for a short period before fully switching.

This reduces migration risk and helps the team avoid data gaps after go-live.

We would love to hear your thoughts on this shift. Let’s discuss it!

FAQ

Why are ecommerce businesses moving away from legacy ERP systems?: Ecommerce businesses are moving away from legacy ERP systems because they often become costly, complex, and difficult to customize for modern ecommerce workflows. Many brands now prefer flexible tools like Xero, QuickBooks, Linnworks, and ecommerce integrations to manage accounting, inventory, and order data more efficiently.
Is SMB accounting software enough for ecommerce businesses?: SMB accounting software like Xero or QuickBooks can be enough for many ecommerce businesses when it is connected with the right inventory, order management, tax, and reporting tools. However, businesses with highly complex manufacturing, global compliance, or multi-entity operations may still need a larger ERP system.
What is the best alternative to legacy ERP for ecommerce brands?: A practical alternative to legacy ERP is a connected stack of ecommerce tools, such as Shopify or Amazon for sales, Linnworks for inventory and order management, and Xero or QuickBooks for accounting. This gives ecommerce businesses more flexibility without the high cost of a full ERP setup.
Why do ecommerce brands use Xero or QuickBooks instead of Sage or NetSuite?: Ecommerce brands use Xero or QuickBooks because they are easier to manage, more affordable, and work well with many ecommerce apps and integrations. Compared to Sage or NetSuite, they can be a better fit for businesses that need flexible accounting and faster app connectivity.
Can Linnworks replace an ERP for ecommerce businesses?: Linnworks can replace some ERP functions related to inventory, order management, and multi-channel ecommerce operations. However, it is usually not a full ERP replacement by itself. Many businesses use Linnworks with Xero or QuickBooks to create a lighter and more cost-effective finance and operations setup.
When should an ecommerce business switch from legacy ERP to SMB accounting software?: An ecommerce business should consider switching when the ERP becomes too expensive, needs frequent customization, slows down operations, or does not connect well with ecommerce platforms and marketplaces. If the team is using only a small part of the ERP, a simpler accounting and integration setup may be more practical.
How can ecommerce businesses reduce ERP costs?: Ecommerce businesses can reduce ERP costs by replacing unnecessary ERP modules with focused tools for accounting, inventory, order management, and reporting. Using Xero, QuickBooks, Linnworks, and custom integrations can lower software, maintenance, and implementation costs.
Is QuickBooks or Xero better for ecommerce accounting?: Both QuickBooks and Xero can work well for ecommerce accounting. The better choice depends on the business’s accounting needs, reporting requirements, marketplace setup, and integration preferences. For ecommerce brands, the key is not only the accounting software but how well it connects with sales channels, inventory systems, and payment data.