Realistic Timelines for ERP Implementation in SMB

How long does ERP implementation really take for small and mid-sized businesses? Here’s what to expect and how to plan accordingly

Fábio Campos Soares

5/19/20251 min read

Implementing an ERP system is a significant step for any business, especially for small and mid-sized companies that often operate with lean teams and limited resources. One of the most common questions decision-makers ask is: How long will this take?

The answer depends on many factors, but with a clear plan and the right partner, most SMB ERP implementations can be completed within a few months, not years.

Here’s what you need to know about realistic timelines.

Average Timeline for SMB ERP Projects

For cloud-based ERP solutions tailored to SMBs, a typical implementation takes 3 to 6 months. This timeline assumes:

– A focused scope
– Minimal custom development
– A dedicated internal project team
– A responsive implementation partner

If your company requires complex integrations, data cleanup, or deeper customizations, the timeline may extend to 6 to 9 months.

On-premise implementations, while less common for SMBs today, usually require 9 to 12 months or more, due to infrastructure setup and more technical overhead.

Timeline by Implementation Phase

To give you a clearer picture, here’s how time is typically distributed across the major phases:

1. Planning and Requirements (2–4 weeks)
Initial discovery sessions, scope definition, team setup, and vendor alignment.

2. System Design and Configuration (4–6 weeks)
Setup of modules, workflows, user permissions, and business rules.

3. Data Migration and Validation (3–6 weeks)
Data cleaning, mapping, importing, and testing , often done in parallel with configuration.

4. Testing and UAT (2–4 weeks)
System testing, user feedback, and final adjustments.

5. Training and Go-Live (2–3 weeks)
Team training, final preparations, and official system launch.

6. Post-Go-Live Support (4–6 weeks)
Stabilization period with vendor support and performance tuning.

Factors That Influence Timeline

Your ERP timeline can be shortened or extended based on:

Decision-making speed (how quickly internal approvals happen)
Availability of internal resources
Data quality and volume
Level of customization requested
Training requirements for end users

Clear roles, strong project management, and early alignment between departments will help avoid delays.

Final Thoughts

While ERP implementation can seem complex, most SMBs can go live in under 6 months with the right approach. Rushing the process often leads to mistakes, but dragging it out can increase costs and reduce internal momentum.

Set clear expectations from day one, align your team, and work with a partner who understands SMB realities. With structure and focus, a timely and successful ERP launch is entirely achievable.