Fixed Price Dynamics NAV to
Business Central Upgrade
120+ Upgrades Delivered for
UK Businesses
“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.”
– Nicholas Newitt, Director, Newitts & Co. Ltd.
Microsoft Solutions Partner 4x Partner of the Year 20+ Years in Dynamics 365 40% Licence Savings
The Hidden Cost of Staying Put
Still Running Dynamics NAV?
Here Is What It Is Costing You
No Security Patches from Microsoft
Rising Maintenance, Shrinking Value
Customisations that worked in 2015 now slow your system down. You are paying more for a system that does less.
Locked Out of Modern Tools
NAV cannot connect to Power BI dashboards, Copilot AI, or Microsoft Teams natively. Your competitors on Business Central are making faster decisions with tools your system cannot access.
What Changes for Your Business
Upgrade from NAV to Business Central
Six meaningful improvements that take effect the moment you go live.
Cloud or on-premises - your choice
Business Central runs in the Microsoft cloud (Azure-hosted, automatically updated) or on your own servers. Most UK businesses choose cloud for lower maintenance costs and automatic updates. You are not forced into either option.
Microsoft 365 and Power Platform integration
Business Central connects natively with Excel, Outlook, Teams, Power BI, and Power Automate. Your finance team works inside the tools they already know, no separate login, no data exporting.
Your customisations, handled properly
We migrates your existing NAV customisations using Business Central’s Extensions framework, so future upgrades never break your business-specific functionality. We assess every customisation and recommend whether to migrate, rebuild, or replace.
Copilot AI built in
40% savings on Business Central licences
Bi-annual updates, no re-implementation
100%
FIXED PRICE
The quote is your final invoice – no hourly overruns ever
40%
LICENSE SAVINGS
Average saving vs buying through your existing partner
120+
NAV UPGRADES
Done across every version, from Navision 3.x to NAV 2018
98%
CLIENT RETENTION
Because the upgrade is just the start of the relationship
Why Mercurius IT
Why UK Businesses Choose Mercurius IT
for Their NAV Upgrade
No Surprises
Fixed Price – Your Quote Is Your Final Invoice
We scope your upgrade during a free assessment. The price we quote is the price you pay. No hourly overruns. No change orders. Over £25,000 saved for previous customers compared to competitor quotes.
No UK-Based Project Management
UK Team + Offshore Efficiency
Milton Keynes-based consultants manage your project. Pune-based development team handles build and testing. You get UK-level project management at a competitive rate.
Deep Experience
120+ NAV Upgrades – We Have Seen Every Version
From Navision 3.x to NAV 2018. Heavily customised or close to standard. Cloud or on-premises. We have upgraded systems of every size and complexity.
Award-Winning
4x Partner of the Year. 98% Client Retention
Certified Microsoft Solutions Partner for Business Applications. ISO 27001. Cyber Essentials Plus. 98% of our clients stay with us because the upgrade is just the start of the relationship.
Fixed Price Means Fixed Price
Not an Estimate
Many ERP partners work on a time-and-materials basis, where final costs
can exceed the original estimate. At Mercurius IT, your quote is your
final invoice; whatever the project involves.
With Mercurius IT
How Other Partners Typically Work
Take the First Step
Stay Ahead of the Competition
Upgrade to Business Central
Enter your details below. Mercurius IT will assess your current NAV version
and provide a fixed-price upgrade quote within 48 hours.
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
How Mercurius IT Delivers Your Upgrade
A structured, five-stage methodology refined across 120+ NAV upgrades.
Step 01
Free NAV Assessment
We evaluate your current NAV version, customisations, data volume, and integrations. You receive a written scope document and a fixed-price quote. No commitment.
Step 02
Data and Customisation Audit
We map every customisation in your NAV system. Each one is assessed: migrate as Extension, replace with standard BC feature, or retire. No surprises at go-live.
Step 03
Build and Configure
We set up your Business Central environment, cloud or on-premises and build Extensions for your customisations. Data migration scripts are developed and tested.
Step 04
Test and Train
Your team tests the new system with real data. We train finance, operations, and admin users. Go-live readiness is confirmed before anything switches over.
Step 05
Go Live and Support
Cutover on a fixed date. Mercurius IT support is on standby. Post-go-live optimisation and managed services available.
Client Stories
What Our Upgrade Clients Say
“Despite the project’s challenges, the Mercurius team demonstrated exceptional skill and commitment, working closely with us to find dynamic and efficient solutions to every issue that arose. Their expertise enabled us to successfully complete the project, unlocking new benefits for our staff across Research Units in Uganda and The Gambia.”
Akheam David Fox
Head of Enterprise Systems
London School of Hygiene & Tropical Medicine
“Mercurius assured us that Business Central was the right product and for a fixed cost, they moved us in a timely and professional way. There is a great team behind Jay’s confident smile.”
Tim Clifford
Director
PA Ross
“Mercurius carried out our Navision to Business Central migration, the project was planned and explained logically. Following a successful migration, Mercurius has become a valuable Dynamics Partner, helping with advanced platform developments, integrations, and customisations.”
Paul Andrews
IT Manager
Man and Machine Ltd
Dynamics NAV Upgrade – FAQs
Will I lose my customisations when upgrading from NAV?
How does a fixed-price NAV upgrade work?
How long does a NAV to Business Central upgrade take?
Is upgrading from Dynamics NAV to Business Central risky?
Can I stay on-premises or do I have to move to the cloud?
What versions of NAV can be upgraded?
What does a NAV upgrade cost?
What support does Mercurius IT provide after go-live?
Upgrade or Fall Behind?
Get Your Fixed-Price
Quote Today.
Tell us your NAV version and what you need. Mercurius IT will assess your system and provide a fixed-price upgrade quote within
48 hours.
Quote within 48 hours
No commitment required
Free assessment included