Cart is empty If your organisation is still running a legacy Microsoft Dynamics platform — AX, NAV or GP — you're probably already aware that the clock is ticking on support, security and competitiveness. What you may not know is that Microsoft offers a significant financial incentive to accelerate the move: a 40% transition discount on your dynamics 365 license for eligible customers migrating from older Dynamics versions to the cloud.
That's not a marginal saving. On a platform where full user licences for Finance or Supply Chain Management run at approximately £150–180 per user per month at list price, a 40% reduction fundamentally changes the Dynamics 365 license cost equation — and in many cases tips the business case from "we should plan for it" to "we should start now."
This article explains who qualifies, how the discount works, what it means for your total cost of ownership and how to combine the licensing advantage with a well-planned ERP migration to maximise both savings and outcomes.
Who Is Eligible for the 40% Discount?
The transition discount is designed specifically for organisations already invested in the Microsoft Dynamics ecosystem. Microsoft's goal is to move its legacy installed base onto the Dynamics 365 cloud platform — and the discount removes one of the biggest barriers to that transition: the perceived cost of switching from perpetual on-premise licences to recurring cloud subscriptions.
Eligibility is tied to your existing Dynamics licence agreement. Customers who purchased Microsoft Dynamics licences before 31 October 2016 qualify for the full 40% discount. Those who purchased on or after that date may still qualify for a 15% discount. The discount applies to the transition of existing licensed users — it does not extend to net-new user seats added after the qualifying purchase.
Specific eligibility terms, qualifying products and current availability should be confirmed with your Microsoft account team or your Dynamics 365 partner, as Microsoft periodically updates programme conditions. The core principle, however, has remained consistent: legacy Dynamics customers moving to the cloud get preferential pricing that meaningfully reduces the ongoing Dynamics 365 license cost.
How the Discount Changes the Cost Equation
Legacy Dynamics platforms — AX, NAV, GP — operated on perpetual licence models. You bought the licence once, paid annual maintenance (typically 16–18% of the licence value), and ran the software on your own infrastructure. The ongoing cost was the maintenance fee plus hosting, hardware, patching and internal IT support.
Dynamics 365 operates on a subscription model. You pay per user, per month, for the applications you use. At first glance, the shift from a one-off purchase to a recurring subscription can look more expensive — especially when you're used to amortising a perpetual licence over many years.
But the comparison is misleading without factoring in the full picture. Perpetual licences carry hidden costs: server hardware and hosting, database licensing, backup infrastructure, patching labour, security management, upgrade projects every few years, and the opportunity cost of IT staff spending time on maintenance rather than value-adding work. Dynamics 365 cloud subscriptions include infrastructure, hosting, security, disaster recovery, continuous updates and platform support — all bundled into the per-user fee.
When you layer the 40% transition discount on top of that bundled value proposition, the Dynamics 365 license cost for migrating legacy customers frequently comes in lower than the total cost of continuing to run and maintain the on-premise system — even before counting the operational and strategic benefits of moving to the cloud.
Understanding Dynamics 365 Licence Types
To calculate the real impact of the discount, you need to understand how Dynamics 365 license types work. The model has evolved significantly from the AX-era approach and is now structured around four user tiers.
Full User licences provide complete access to a specific Dynamics 365 application — Finance, Supply Chain Management, Sales, Customer Service and so on. These are required for anyone performing core operational tasks: processing transactions, managing inventory, running financial close, handling customer cases.
Attach licences offer discounted access to additional applications for users who already hold a qualifying base licence. For example, a user with a Finance base licence can add Supply Chain Management at a reduced attach price rather than purchasing a second full licence. This modular approach lets you expand functionality without doubling licensing costs.
Team Member licences cover users who need limited access — viewing reports, approving workflows, entering timesheets or raising purchase requisitions. They're significantly cheaper than full user licences and appropriate for the majority of employees who interact with the ERP occasionally rather than daily.
Device licences allow multiple users to access Dynamics 365 from a shared device — useful for warehouse, shop-floor or retail environments where individuals don't need personal logins.
The 40% transition discount applies to qualifying licences based on your existing entitlements. Working with your Dynamics 365 partner to map current AX users to the correct D365 licence tiers — and applying the discount to the right seats — is essential for optimising Dynamics 365 license cost from day one.
For a comprehensive overview of licensing structure and buying options, see GO-ERP's How to Buy Dynamics 365 guide.
Planning Your ERP Migration to Maximise the Discount
The licensing discount creates a financial window of opportunity — but realising the full value requires pairing it with a well-planned ERP migration. Licensing savings are meaningless if the migration itself runs over budget, misses deadlines or delivers a system that doesn't meet business requirements.
The migration planning process should address several interdependent decisions simultaneously.
Which Dynamics 365 Applications Do You Need?
AX was a monolithic platform. Dynamics 365 is modular. You don't need to licence every application — you need to licence the ones that match your operational requirements. Most AX customers transitioning to Dynamics 365 land on Finance and Supply Chain Management as their core applications, with optional extensions into Human Resources, CRM, Business Central or Power Platform capabilities depending on their needs.
Getting the application mix right at the outset — and mapping users to the correct licence tiers — directly affects both the discount value and the ongoing subscription cost. Overlicensing wastes money. Underlicensing creates compliance risk, especially as Microsoft tightens role-based licence enforcement across Finance and Operations applications.
Upgrade or Reimplement?
The discount applies regardless of whether you migrate or reimplement. The choice between the two depends on your AX version, customisation complexity and how closely your current configuration aligns with current business needs. AX 2012 R3 environments with limited customisation typically follow a structured upgrade path. Older versions or heavily customised estates may benefit more from reimplementation.
Either way, the licensing discount makes the financial case stronger — because the ongoing subscription cost is lower, the payback period on the migration investment shortens accordingly.
Data, Integrations and Testing
ERP migration success depends on data quality, integration readiness and thorough testing — regardless of the licensing model. Clean your data before migration, rationalise what actually needs to move to the new platform, document and validate all integration points, and run structured test cycles that cover unit, integration and user acceptance testing.
These fundamentals don't change because of the discount — but the discount does change the economics of doing them properly. With lower ongoing licence costs, more budget is available for the migration programme itself, including the data cleansing, training and change management activities that determine whether the new system is adopted successfully.
Beyond Migration: Ongoing Value on the Cloud
The 40% discount addresses the transition cost. But the long-term value of moving to Dynamics 365 cloud goes well beyond licensing savings.
Continuous updates mean you're always on the latest version — no more multi-year upgrade projects. Native integration with Power BI, Power Automate and Power Apps extends functionality without custom development. Enterprise-grade security and compliance controls are managed by Microsoft as part of the platform. And scalability is built in — you add users, capacity and applications as the business grows, without infrastructure procurement cycles.
For organisations in manufacturing, distribution or trade and commodities, the operational benefits of Dynamics 365 cloud — real-time visibility, automated workflows, AI-driven forecasting — compound over time, delivering returns that far exceed the licensing savings that triggered the move.
Check Your Eligibility with GO-ERP
GO-ERP helps legacy Dynamics customers navigate the transition to Dynamics 365 — from eligibility assessment and licence optimisation through to implementation, development, managed services and ongoing support. The team can confirm whether your organisation qualifies for the 40% Dynamics 365 license discount, model the cost impact against your current AX total cost of ownership, and build a migration plan that turns the licensing advantage into measurable business value.
Contact GO-ERP to discuss your eligibility and start planning an ERP migration that saves money from day one.