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NAV to Business Central Upgrade Before the 2028 Deadline

Microsoft will stop releasing security updates for Dynamics NAV 2018 on 11 January 2028, ending more than two decades of support for the NAV product line. For finance directors, IT leaders and operations teams still running NAV, that deadline is closer than it feels.A NAV to Business Central upgrade is no longer a future project. It is a critical eighteen to twenty four month programme that protects compliance, removes mounting infrastructure costs and unlocks the AI, automation and integration capabilities your retail, sports or events organisation needs to compete.

BC4 has guided dozens of NAV migrations to Microsoft Dynamics 365 Business Central. This page sets out the timeline, the step by step checklist, indicative costs and answers to the questions we are asked most often.

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Microsoft Dynamics 365 Business Central
is the modern successor to NAV

 Business Central builds on everything NAV does well, then adds continuous updates, cloud flexibility, and deep integration with Microsoft 365 and Power BI, so your team works inside the tools they already know. At BC4 we have shaped our upgrade approach around the realities of retail, sports, and event operations, which means a move that is straightforward, safe, and tuned to the way your business actually runs. 

Why Upgrade from NAV to Business Central Now

NAV has served mid market businesses well since the late 1990s, first as Navision and then as Microsoft Dynamics NAV. Microsoft Dynamics 365 Business Central is its direct successor. It is built on the same trusted code base but redesigned for the cloud, native Microsoft 365 integration and continuous innovation through twice yearly feature releases. Staying on NAV past January 2028 carries three real costs. Compliance risk grows as security patches stop. Operational cost rises as ageing servers, expensive SQL licences and bespoke integrations become harder to maintain. Opportunity cost compounds as you miss Copilot, embedded Power BI, real time stock visibility and the wider Microsoft ecosystem your competitors already use.

Your NAV to Business Central Migration Timeline

 
Phase 1: Discovery and assessment (1-4 weeks)

Review NAV version, customisations, integrations and data volumes. Map current business processes. Define future state in Business Central. Produce business case and indicative budget. 

Phase 2: Design and scoping (4-10 weeks)

Detailed solution design including chart of accounts, dimensions and workflows. Decide on cloud, on premise or hybrid deployment. Confirm AppSource extensions. Sign off statement of work. 

Phase 3: Build and configure (8-20 weeks)

Provision Business Central environments. Configure finance, sales, purchasing and inventory. Rebuild NAV customisations as modern AL extensions. Build integrations to POS, eCommerce and ticketing. 

Phase 4: Data migration and testing (16-24 weeks)

Cleanse and migrate master data. Migrate opening balances and selected transactional history. User acceptance testing across every key process. Performance and integration testing. 

Phase 5: Training and go live (22-28 weeks)

Role based training for finance, retail, operations and IT. Cutover plan with parallel running where appropriate. Go live weekend. Hypercare for four to six weeks. 

Phase 6: Optimise and evolve (Ongoing)

Adopt new features as they release twice yearly. Layer in Copilot, Power BI and AppSource extensions. Move to BC4 managed services for release management and continuous improvement. 

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Step by Step NAV to Business Central Upgrade Checklist

A successful upgrade is won or lost in the detail, so use this checklist to brief your project sponsor, IT lead and finance team before you sign a migration contract. Gaps here are the single biggest cause of overruns and post go live issues, and most of them are easy to close if you spot them early. Print it, share it, stick it on the wall if it helps.

Plan your NAV to Business Central upgrade with BC4

 Talk to our experts about your move from Dynamics NAV. We will assess your existing setup, scope the project clearly, and walk you through a smooth transition to Business Central that has been built around the demands of retail, POS, and commerce operations. 


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Frequently Asked Questions

When does support for NAV end?

Security updates end in January 2028. After this, NAV systems will be unsupported and potentially insecure.

Will our data and customisations carry over?

Yes. BC4 ensures critical data is migrated safely, and NAV customisations are either converted or replaced with modern extensions.

Do we have to move to the cloud?

Not necessarily but it is often recommended. Business Central can be deployed in the cloud, hybrid, or on-premises. However, most clients benefit from the scalability and lower costs of cloud.

How long does a migration take?

Timelines vary depending on the complexity of your NAV environment, customisations, and data quality. At BC4 we fully scope out the project at the start to provide a clear estimate, so you know exactly what to expect before moving forward.

What if we rely heavily on POS and eCommerce?

That’s where BC4 excels. We specialise in retail environments where POS, ERP, and commerce need to run seamlessly together.