MRP software vs ERP for ecommerce brands

MRP software plans the materials a production run needs: which items, how many and when. An ERP runs the whole business, so an ecommerce brand that manufactures its own products usually needs an ERP with built-in MRP.

The ERP keeps MRP next to orders, stock, CRM and finance. That matters once you sell on Shopify, WooCommerce, Amazon and wholesale at the same time. Material planning alone can't tell you which webshop order triggered which production run. It also can't tell you what that run cost.

Below you'll find a side-by-side comparison and a two-column table to help you decide which one your brand needs.

MRP software vs ERP at a glance

The main difference in ERP vs MRP is scope. MRP software plans materials for production, while an ERP runs production, sales, stock and finance in one system. The table compares them row by row.

	MRP software	ERP with built-in MRP
Core question	What materials do we need, how many and when?	How is the whole business running, from order to cash?
Main users	Production planners and buyers	Operations, warehouse, sales and finance teams
Data covered	Production schedule, bills of materials, stock on hand	Production, purchasing, inventory, orders, customers and accounts
Sales orders	Imported or re-keyed by hand	Created directly from each sales channel
CRM	Not part of the tool	Customer records and order history in the same system
Finance	Separate accounting software	Invoices, payments, VAT and sales tax handled together
BI	Production reports	Dashboards across sales, stock, production and margins
Channels (Shopify, Amazon, wholesale)	Separate apps or manual exports	Connected through native connectors
Typical setup	One tool for one department	One platform shared by every team

What is MRP software and what does it cover?

MRP software is a planning system that works out which materials a production run needs, in what quantity and by what date. Material requirements planning (MRP) began as MRP-1, which Joseph Orlicky developed in 1964, according to a U.S. Department of Energy training module.

The CIPS guide to material requirements planning lists the inputs an MRP system runs on: the master production schedule, the bill of materials and the inventory status file. The schedule says what you'll make. The bill of materials lists every component per unit, and the inventory file shows what's already on the shelf.

Say a skincare brand plans to make 2,000 jars of serum next month. Each jar needs serum base, a glass jar, a pump lid and a label. MRP software multiplies the bill of materials by 2,000, subtracts stock on hand and tells the buyer what to order before production starts.

That's where MRP stops. It doesn't know the serum sold out on Amazon last week, or what the run did to your margin.

How does MRP differ from an all-in-one ERP?

MRP differs from an all-in-one ERP in scope: MRP covers production materials, while an ERP covers the entire business. The Department of Energy module describes ERP as integrating planning, purchasing, inventory, sales, marketing, finance and human resources.

The same module describes MRP as linking production schedules with inventory and the bill of materials. So the difference between MRP and ERP is containment. In an ERP, MRP becomes one module among many, and the production plan, the sales order and the invoice share one database.

How does material requirements planning fit into an ERP?

Material requirements planning fits into an ERP as the production module, drawing on the same stock, purchasing and sales data every other team uses. Demand comes from real orders instead of a forecast typed into a spreadsheet.

Purchase suggestions flow straight into purchasing. Received materials update inventory, and finished goods land back in stock, ready to ship. The serum run shows up in the warehouse and in the accounts at once, because both read the same record.

Why do online product brands outgrow standalone MRP tools?

Online product brands outgrow standalone MRP tools when sales channels multiply and the stack around MRP turns into a manual relay. A typical stitched stack has MRP software, a Shopify app for orders, a separate CRM and an accounting package.

Every link in that chain needs a person. Someone exports webshop orders and re-keys them into production. Someone else updates stock after each run. By month-end, the stock count in MRP no longer matches the webshop, and finance is reconciling both by hand.

Adding Amazon or a wholesale account makes it worse. Each new channel adds another export and another place for numbers to drift.

One system removes the relay. Cocosolis has used Prim.io for 9 years for end-to-end operational management. That is the opposite of a stitched stack: one record per order and per batch, kept on one platform for close to a decade.

The full guide to ERP for manufacturing covers production setup in more detail.

Why do manufacturers choose an all-in-one ERP over standalone MRP?

Manufacturers choose an all-in-one ERP over standalone MRP because it plans production from live sales demand and costs each run in the same system. Planning and selling stop being separate jobs.

For a DTC brand, that means fewer spreadsheets and fewer arguments about which number is right. You can add a channel or a market without adding another tool to reconcile.

How do manufacturing work orders and ecommerce orders connect in an ERP?

Manufacturing work orders and ecommerce orders connect in an ERP through shared stock. A sales order reserves inventory, and any shortfall becomes a work order built from the bill of materials. The flow runs in five steps.

An order lands from Shopify, WooCommerce, Amazon or a wholesale buyer through a connector.
The ERP reserves available finished goods for that order.
Planners turn any shortfall into a work order based on the product's BOM.
Production completes the run, and finished goods return to stock for picking.
Production costs flow to finance, so margin per product stays visible.

Back to the serum run. A wholesale order for 500 jars arrives with 200 in stock. The other 300 become a work order, with jars, lids and labels reserved for it.

Prim.io includes manufacturing (work orders, BOM/recipes, costing) alongside inventory, orders, CRM, and BI. Orders reach it through 50+ native integrations for webshops, marketplaces, couriers and accounting tools. Store, marketplace and courier connectors are priced per connector (€20 to €50 per month); finance connectors are free.

Do ecommerce brands need MRP or ERP software?

Ecommerce brands that manufacture and sell across several channels usually need ERP software with built-in MRP. Brands with one channel and simple production can manage with standalone MRP for a while.

Standalone MRP fits if...	An ERP with MRP fits if...
You sell on one channel at low volume	You sell on Shopify, WooCommerce, Amazon and wholesale at once
Production is your only planning problem	Stock, orders and finance also need to match
Exporting data to accounting takes minutes	Month-end reconciliation takes days
You track customers only inside the webshop	Sales and support need customer history in one place
You don't track batches or expiry dates	You need batch, serial or expiry tracking
You plan to stay in one market	You plan to add markets with VAT or US sales tax rules

If the right column sounds like your brand, the next questions are time and cost with Prim.io. Onboarding takes about 6 weeks when data is ready, with fixed professional onboarding fees. The fee is a one-time €1,300 for Plus and Pro, or €3,900 for Enterprise.

How Prim.io handles manufacturing compared to traditional MRP

Prim.io handles manufacturing inside the same system as sales, stock and finance, where traditional MRP plans production on its own. Prim.io is a cloud ERP with built-in AI for ecommerce and multi-channel brands, running orders, stock, finance, CRM, production and BI in one system.

The AI assistant answers questions from the company's own sales, stock and finance data. It also reads invoices, corrects addresses and matches payments. Prim.io MCP connects Claude, ChatGPT and Cursor, with per-user permissions and approval before any change.

Around the AI sits an all-in-one ERP, BI and CRM built for ecommerce. Planners build BOMs, run work orders and see costing per run, with purchasing and landed cost in the same place. Inventory tracks bins, batches, serial numbers, expiry dates and barcodes, so every batch from the serum run carries its expiry date.

BI powered by Qlik shows margins and stock across every channel. Production numbers and sales numbers come from one source, so nobody has to reconcile them.

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Why ecommerce brands choose Prim.io

Ecommerce brands choose Prim.io because it runs production and multi-channel sales on one platform at real volume. Here is the short version:

Prim.io processes 3.1M+ orders monthly for the brands that run on it.
50+ native integrations connect webshops, marketplaces, couriers and finance tools.
Manufacturing, CRM, BI and orders share one system.
Go-live takes about 6 weeks on average, 5 to 8 weeks depending on complexity.
Cocosolis opens new markets without changing systems.

Plans from €180 per month, billed annually, excluding VAT. Compare plans and pricing for user counts and connector costs.

FAQ: MRP software vs ERP

These answers cover common questions about MRP software vs ERP for product brands that sell online.

What is the main difference between MRP and ERP?

The main difference between MRP and ERP is scope. MRP plans the materials production needs: which items, how many and when. An ERP runs the whole business, combining that planning with purchasing, inventory, sales orders, customers and finance. Every team then works from the same numbers instead of exporting data between separate tools.

Does Prim.io include MRP features like BOMs?

Yes. Prim.io supports bills of materials and recipes, work orders and production costing. Planners can turn a stock shortfall on a webshop, marketplace or wholesale order into a work order without re-keying data. Batches, serial numbers and expiry dates stay tracked in inventory, and production costs feed the same BI dashboards as sales.

Do product brands need CRM and ERP together?

Yes, if you sell to repeat customers or wholesale accounts. When CRM sits inside the ERP, your sales team sees order history, open invoices and stock in one place. You avoid syncing customer records between tools, and wholesale pricing stays consistent with what the warehouse and finance teams see.

Is MRP part of ERP?

Yes, MRP is usually a module inside an ERP. The Department of Energy module describes MRP as linking production schedules with inventory and the bill of materials. ERP extends that integration to purchasing, sales, marketing, finance and HR. Standalone MRP software still exists for teams that only need production planning.

How much does Prim.io cost?

Prim Plus is €180, Prim Pro €540 and Prim Enterprise €1,710 per month, billed annually, excluding VAT, with 3, 5 and 15 users included. Store, marketplace and courier connectors cost extra per connector, while finance connectors are free. Onboarding is a one-time fee of €1,300 for Plus and Pro, or €3,900 for Enterprise.

How long does it take to switch from MRP software to an ERP?

Switching from MRP software to Prim.io takes about 6 weeks on average, 5 to 8 weeks depending on complexity. Clean product data and accurate bills of materials speed things up. Opening a free demo account first lets your team test order and production workflows before the migration starts.

Key takeaways before you choose MRP software or an ERP

Choosing between MRP software and an ERP comes down to how much of your business needs to share one set of numbers. Use this checklist before you decide:

Understand that MRP covers material planning, while ERP covers the whole business.
Evaluate separate tools against an all-in-one cloud platform.
Check that the software handles ecommerce orders, CRM and financial connectors.
Review production BOMs, work orders and inventory tracking.
Plan for about 6 weeks of onboarding when your data is ready.