4x Award-Winning Dynamics 365 Partner
Still on Dynamics AX?
Upgrade to D365
Finance & Supply Chain
Fixed Price. No Disruption.
Microsoft ended AX support in January 2023. Stop running your business on an unsupported liability.
We transition UK enterprises to the cloud with guaranteed cost certainty, ensuring your
finance and supply chain teams never miss a beat while we do the heavy lifting.
Microsoft Solutions Partner 20+ Years Fixed-Price Projects 500+ UK Business
Benefits Your Business Deserves
Upgrading from AX to Finance & Supply Chain is not just a migration,
it is a platform for your next decade of growth.
30%
Improvement in
operational efficiency
Reduce manual entry, automate reconciliations, and streamline
supply chain visibility.
25%
Reduction in
IT expenditure
Reduce manual entry, automate reconciliations, and streamline
supply chain visibility.
£25k+
Savings with our
fixed-price upgrade
Compared to traditional time-and-materials migrations. No hidden
costs or budget overruns.
Support Ended January 2023
The Real Cost of Staying on Dynamics AX
Microsoft ended extended support for every version of Dynamics AX. AX 2012 R3: the last version stopped receiving security patches on 10 January 2023. Here is what that means for your organisation today.
No Security Patches
New vulnerabilities are discovered monthly. Microsoft
is not fixing them for AX. Your ERP which processes every financial transaction and holds supplier,
customer, and employee data is unpatched. Auditors
and cyber insurers are already asking questions.
Integration Failures
Modern APIs, cloud services, and partner systems increasingly require endpoints that AX cannot provide natively. Every year, more third-party vendors drop AX connector support, forcing your IT team to build and maintain custom bridges.
Regulatory Drift
UK tax rules change. MTD requirements evolve.
HMRC filing formats update. AX does not receive regulatory updates. Your finance team is manually working around requirements that D365 handles automatically.
Rising Maintenance Costs
Finding AX developers is getting harder and more expensive. The talent pool is shrinking as consultants move to D365. The longer you wait, the fewer
qualified people are available to maintain your
system and the more they charge.
The question is not whether to move. It is whether you move on your timeline or are forced to move on someone else’s.
What D365 Finance & Supply Chain Replaces AX With
cloud applications that share the same data layer.
Shared Dataverse + Azure cloud infrastructure
Both products share the same database, the same user interface, and the same security model.
Your team learns one system. Your data lives in one place. If you need both, you licence both.
If you only need Finance, you licence Finance.
Copilot AI: Built Into D365. Missing From AX.
Dynamics AX was built before AI existed in enterprise software. D365 Finance & Supply Chain
Management ships with Copilot, an AI assistant that works inside every module.
No add-on. No extra licence.
Natural Language ERP Queries
Ask ‘Show me all purchase orders over £50,000 from last quarter’ in plain English. Copilot translates your question into a
query and returns the answer.
Demand Forecasting with Explainability
Copilot generates demand forecasts and explains why showing which historical patterns, seasonal trends, or external
factors influenced the prediction.
Bank Reconciliation Assistance
Copilot suggests matches between bank statement lines and open transactions, learning from your approval patterns to improve accuracy over time.
Purchase Order Change Detection
When a supplier changes a PO
confirmation (price, quantity, delivery
date), Copilot flags the discrepancy and suggests how to respond.
Collections Letter Drafting
Generate personalized, professional collection communications based on customer payment history, outstanding balance, and relationship context.
Supplier Communications Agent
Autonomous AI agent that handles routine supplier queries, order confirmations, and delivery updates (arriving 2026 wave 1).
Every Copilot feature listed above works inside Dynamics 365 Finance & Supply Chain Management today (except where noted). None of these capabilities exist in any version of Dynamics AX and never will.
Full Database Upgrade
Best for: AX 2012 R2 or R3 with manageable
customisations
Your entire database transactions, master data, history
is converted and brought forward into D365. Customisations are migrated or rebuilt using the D365 extension framework. You keep your audit trail intact.
Full transaction history preserved
Customisation code converted
Audit trail remains intact
Requires AX 2012 R2 or R3 as starting point
Clean Re-Implementation
Best for: AX 2009, heavily customised AX 2012, or organisations wanting a fresh start
Master data and open transactions are migrated into
a brand-new D365 environment. Historical data stays accessible in your legacy AX database or is moved
into an Azure data warehouse for reporting and compliance.
Start with a clean, optimised system
Eliminate years of accumulated workarounds
Faster implementation timeline
Historical data archived in Azure for compliance
Not sure which path is right? That is exactly what our free AX Migration Assessment answers. We analyse your AX version, customisations, data volume, and integrations, and give you a clear recommendation with a timeline and scope.
Get a Quick Quote for Dynamics 365 F&SCM!
Skip the complexity and get a clear, customised estimate for your ERP upgrade in just 10 minutes.
Our smart pricing tool evaluates your business needs to provide an accurate cost breakdown,
tailored to your operations.
Implementation Process
How Your AX to D365 Migration Works
Every project follows a structured methodology. No surprises. No scope creep.
You know what is happening at every stage.
1
Discovery & Assessment
We audit your AX environment: version, modules in use, customisations, integrations, ISV products, data volume, and user count. You get a written assessment with a clear migration path, timeline, and fixed-price quote.
2
Solution Design
We map your current business processes to D365 Finance and Supply Chain Management. We identify what moves as-is, what needs reconfiguring, and what should be retired. You sign off on the design before we build anything.
3
Build & Configure
We set up D365, configure modules, rebuild customisations as extensions, connect integrations, and set up security roles. Your AX system keeps running. Your team keeps working.
4
Data Migration
We extract, cleanse, and load your data master data, open transactions, and historical records (where applicable). Every record is validated before and after migration. Data integrity reports are provided.
2
Testing & Training
End-to-end functional testing, user acceptance testing with your team, and hands-on training for every user role.
We do not go live until your team is confident.
3
Go-Live & Hyper-Care
Coordinated cutover on a date you choose. Hyper-care support for the first weeks after go-live. We are on call to fix issues in real time. Then ongoing managed support if you need it.
Typical timelines: 12-16 weeks for mid-market upgrades, 16-30 weeks for complex enterprise migrations with multiple entities and heavy customisation. We scope it precisely during Discovery so you know exactly what to expect.
Award-Winning UK Dynamics 365 Partner
Our commitment to innovation and client success has earned us
industry-leading recognition
2022
Partner of the Year
2023
Partner of the Year
2024
2025
Partner of the Year
Fixed Price, Fixed Scope
Your quote is your final invoice. We scope the project in Discovery, agree a fixed
price, and absorb the risk. No change orders. No hourly overruns. The
commercial risk sits with us, not you.
Dynamics 365 Is All We Do
We do not sell Salesforce. We do not sell SAP. We do not sell HubSpot. Every consultant, developer, and architect in our team works exclusively on Microsoft Dynamics 365. That focus means fewer mistakes, faster delivery, and deeper
product knowledge.
Free AX Health Check
Before you commit to anything, we run a complimentary health check on your existing AX system. We identify issues you know about and the ones you do not. You get a written report with findings and recommendations whether or not you proceed with us.
What Our Clients Say
“Mercurius came in, had a good understanding of not just what we wanted today but what our strategy was for the group going forward, and came up with several proposals looking at what was the best fit in terms of a system that could grow with the business as the business grew.”
“Not only did Mercurius beat our existing partner’s quote by a significant margin, they did it at a fixed price — removing our commercial risk. In the end, they guided us carefully through the process and also implemented some great improvements to our business.”
Nicholas Newitt
D365 Licensing, Explained Simply
Dynamics 365 Finance & Supply Chain Management runs on a per-user, per-month subscription.
Microsoft handles hosting, updates, security patches, and disaster recovery.
Named User Licences
Each user who needs access gets their
own licence. There are different licence types depending on the level of access required full users, team members, and device-only users. We help you map the right licence to each role to avoid overspending.
Automatic Updates, No Upgrade Projects
D365 receives two major releases per year and monthly quality updates. Microsoft applies them automatically. You never face another multi-month upgrade project. You are always on the latest version with the latest Copilot features.
Bridge to the Cloud Discount
Microsoft offers qualifying AX on-premises customers a promotional discount when migrating to D365 Finance & Supply Chain Management. We help you check eligibility and apply the programme as part of your migration.
Microsoft updates D365 every two weeks. You get new features, security patches, and regulatory updates
automatically, no extra cost, no downtime. Your infrastructure is hosted on Azure with 99.9% uptime SLA.
Integrations That Work Out of the Box
connectors to the Microsoft ecosystem and an open API layer for everything else.
For third-party systems EDI providers, WMS platforms, e-commerce, payroll, CRM,
D365 Finance & Supply Chain exposes a full REST API and supports OData endpoints.
We build and test every integration as part of your fixed-price project.
AX to D365 Migration FAQs
Straight answers to the questions every buyer asks before they commit.
Is our version of AX supported at all?
No. Microsoft ended extended support for every version of Dynamics AX. AX 2012 R3 was the last, and its final security patch was released on 10 January 2023. AX 2012 R2, AX 2012, and AX 2009 lost support even earlier. No version of AX receives security updates, regulatory updates, or product improvements from Microsoft.
What is the difference between an upgrade and a re-implementation?
An upgrade converts your entire AX 2012 database – all transactions, history, and customisation code directly into D365. A re-implementation starts with a clean D365 environment and migrates only master data and open transactions. Historical data is archived in Azure. We recommend the right path based on your AX version, customisation complexity, and business goals.
How long does the migration take?
Mid-market organisations with moderate customisations typically go live in 12 to 16 weeks. Complex enterprise projects with multiple legal entities, heavy customisations, and large data volumes can take 16 to 30 weeks. We define the exact timeline during our free Discovery assessment.
How much business downtime will we experience during go-live?
We engineer our cutovers for zero operational disruption. Migration and testing are conducted in parallel environments, and the final cutover is strategically scheduled during weekends or your lowest-impact periods. You log out of your legacy system on Friday and log into a fully tested D365 environment on Monday.
What happens after we go live? Do you provide ongoing support?
A successful go-live is just the beginning of our partnership. We provide comprehensive UK-based managed services, dedicated user training, and proactive system optimisation. We don’t just fix bugs; we hold quarterly reviews to ensure your team is fully adopting the software and maximising the ROI of your Microsoft investment.
What happens to our AX customisations?
Every customisation is assessed during Discovery. Standard D365 functionality replaces many old workarounds. Remaining customisations are rebuilt as D365 extensions, which are upgrade-safe and maintained through future releases. We do not carry forward technical debt.
We are on AX 2009. Can we still migrate?
Yes, but there is no direct upgrade path from AX 2009 to D365. The recommended approach is a clean re-implementation on D365 Finance & Supply Chain Management, migrating master data and open transactions using Microsoft’s data migration framework. We have done this many times.
Will D365 integrate with our existing third-party software and ISVs?
Yes. Business Central offers robust integration capabilities via standard APIs and the Power Platform. Whether you use specialised warehouse scanning (like Tasklet Factory), automated document management (like Continia), or bespoke legacy databases, our Solution Architects map and secure every integration point during the Discovery phase.
What does 'fixed price' actually mean?
It means the price we quote after Discovery is the price you pay. We do not bill by the hour. If the project takes longer than expected, we absorb the cost. The commercial risk sits with Mercurius, not with you. Brian Stringer at Wescom Group and Nicholas Newitt at Newitts & Co. both chose us specifically because of this.
Does Microsoft offer any financial incentives to migrate?
Yes. Microsoft’s Bridge to the Cloud programme offers qualifying on-premises AX customers a promotional discount on D365 licences. Microsoft’s AIM (Accelerate, Innovate, Move) programme also provides migration assessments and investment offers for qualifying customers. We help you check eligibility for both programmes.
Ready to Move Beyond Dynamics AX?
What Happens on the Call?
30-mins discovery call to understand your current system
Review your AX environment, recommend the right migration path
Custom roadmap with timeline and pricing
No obligation – Just a straight answers to your questions