Decision

CRM vs ERP: which one does your company need

Updated 24 Jun 2026 · 6 min read

It's one of the most common questions when digitising a business: do I need a CRM or an ERP? The short answer: they solve different problems and most SMEs end up needing parts of both. Let's clear it up without the jargon.

What each one does

The CRM (Customer Relationship Management) looks outward: clients, opportunities, quotes, sales follow-up and after-sales. Its job is to make sure no sale and no client slips through.

The ERP (Enterprise Resource Planning) looks inward: invoicing, accounting, warehouse/stock, purchasing, cash flow and banking. Its job is to keep operations running without discrepancies.

CRM vs ERP at a glance

 CRMERP
Focuses onClients and salesOperations and finance
Question it answersHow do I sell more and keep clients?How do I invoice and keep control of the business?
Typical dataLeads, quotes, follow-upInvoices, stock, banking, accounting
Mainly used bySales / customer careAdmin / finance

So which one do I need?

Start with the biggest pain:

  • If you're losing opportunities, not following up or don't know where each client stands → you need a CRM.
  • If the problem is invoicing, IGIC/VAT, stock or squaring the bank → you need ERP features, starting with VeriFactu invoicing y bank reconciliation.

The trap of picking one and leaving it there

When you buy a CRM from one place and an ERP from another (or a separate invoicing program), you end up with systems that don't talk to each other: sales closes a deal in one place and admin retypes it in another. Double work, mismatched data and nobody with the full picture. In fact, only 17% of Spanish SMEs have their CRM integrated with their accounting.

The custom option: a single foundation

With custom development you don't choose between CRM and ERP: you build a single foundation where clients, quotes, invoices, banking and stock share the same data. Sales closes the deal and the invoice issues itself; the payment arrives from the bank and reconciles with no typing. You can start with the module that hurts most (CRM or invoicing) and grow in phases, with no per-user fees and the code in your hands.

And where it makes sense, you add automation: reminders, reports and tasks that run themselves.

Frequently asked questions

Can I have CRM and ERP in a single system?

Yes. With custom software you build a single foundation where the CRM (clients and sales) and the ERP (invoicing, banking, stock) share data, with no duplication or reconciliation between programs.

Which should I start with?

With the biggest pain. Lost sales → CRM. Invoicing/stock/cash flow → ERP. With custom software you can start with one module and extend.

Isn't a generic CRM/ERP cheaper?

Cheaper in month one and more expensive every year: you pay per user and you adapt to the software. With custom software the cost is a development payment, the system adapts to you and the code is yours.

Not sure where to start?
In a 30-minute call we'll tell you whether you need a CRM, an ERP or a bit of each, and how to tackle it in phases — no strings attached.
Let's talk about your case

More about our Custom CRM and the rest of our services.