If you are still running Microsoft Dynamics GP, you have more time than the headlines suggest, but less time than the calendar makes it look. The software is not being switched off next month. Support from Microsoft continues until the end of 2029, with security patches extending to April 2031. That sounds comfortable until you understand how long a well-managed migration actually takes, and what happens to the GP ecosystem between now and those dates.
This guide sets out the confirmed timeline, explains what each milestone actually means for your business, and walks through the realistic options available to UK SMEs right now, including a Microsoft promotion that makes 2026 and 2027 a particularly good window to act.
The confirmed Dynamics GP end-of-life timeline
Microsoft has published a clear, phased wind-down for Dynamics GP. Here is what each date means in practice:
New customers can no longer purchase Dynamics GP on a perpetual licence. Existing customers are not affected. This milestone only prevents new businesses from adopting the product.
From 1 April 2026, no new Dynamics GP subscription licences can be purchased by new customers. Existing customers on active agreements can continue and can still add users, but new GP implementations are no longer available through Microsoft or its partners.
This is the date that matters most operationally. After 31 December 2029, Microsoft will no longer deliver product enhancements, payroll updates, tax table changes, regulatory compliance fixes or technical support for Dynamics GP. The final year-end payroll update is scheduled for December 2028. If your business uses GP for payroll or operates in a regulated sector, this is the date you need to plan backwards from.
Security updates will continue until April 2031, but only at Microsoft's discretion and only for critical vulnerabilities. This is a conditional safety net, not a substitute for active support. After April 2031, Dynamics GP reaches full end of life.
The 2029 and 2031 dates apply to versions of Dynamics GP covered by Microsoft's Modern Lifecycle Policy, introduced in October 2019. If you are running GP 2016, GP 2018, or another version on the older Fixed Lifecycle Policy, your support dates may already have passed or be arriving sooner. If you are unsure which policy governs your installation, that is worth confirming with your partner before you plan any transition timeline.
Why 2029 is closer than it looks
Three and a half years feels like plenty of time. It is not, once you account for how ERP transitions actually work.
A well-managed migration from Dynamics GP to Business Central takes between six and eighteen months from initial planning to go-live, depending on the number of users, the depth of customisation, and the number of third-party integrations in play. That is the technical project. Before the project starts, most businesses spend three to six months on evaluation, partner selection and internal alignment. Add those together and a business starting serious planning in mid-2028 is likely cutting it very fine for a December 2029 deadline, and doing so at the worst possible time.
The consultant availability problem
As Microsoft shifts investment to Business Central and Dynamics 365, experienced Dynamics GP consultants, ISVs and third-party add-on vendors are progressively pivoting their practices toward cloud platforms. The pool of experienced GP-to-Business Central migration specialists is already contracting. Businesses that wait until 2027 or 2028 to begin planning will be competing for a shrinking resource at the point of highest demand, which means longer lead times, higher rates, and fewer experienced options to choose from.
The technology gap is widening
Business Central ships two major release waves per year, with ongoing enhancements to AI, automation and integration capabilities. Dynamics GP, by contrast, has been in maintenance-only mode for some time. Every month that passes increases the gap between what GP can do and what a modern cloud ERP platform delivers, making the eventual migration more complex and the business case for staying harder to justify.
What stops working after 2029
- Annual payroll updates and tax table releases, directly affecting any business running GP payroll
- Regulatory and compliance updates, relevant to any sector with evolving legal requirements including UK tax legislation changes
- Bug fixes and technical support from Microsoft
- Third-party add-on support: ISVs will progressively drop testing and compatibility coverage for GP as the deadline approaches
The software does not stop running on 1 January 2030. But from that point you are maintaining critical business infrastructure without the compliance coverage, security support or technical assistance that a UK business needs to operate confidently.
Your options as a Dynamics GP customer
Every UK business currently running Dynamics GP has three realistic choices. Here they are, honestly.
Option A: migrate to Microsoft Dynamics 365 Business Central
This is Microsoft's stated recommendation for GP customers, and it is the path most UK SMEs are taking. Business Central is the natural successor. It shares Dynamics DNA, sits within the Microsoft ecosystem your business already uses, and Microsoft has built dedicated cloud migration tools for businesses running GP 2015 or later.
The case for Business Central is strongest when your business already runs on Microsoft 365. Outlook, Teams, Excel and SharePoint integrate natively with Business Central, not through connectors or add-ons, but out of the box. Making Tax Digital compliance is built in and Microsoft-maintained. Copilot AI features are embedded across finance and operations. And the cloud-native model removes the infrastructure overhead that comes with running an on-premise system.
We cover Business Central in detail, including exact pricing, in our guide to Microsoft Dynamics 365 Business Central pricing for UK SMEs.
Option B: migrate to Dynamics 365 Finance
For larger, more complex organisations, typically those with multi-entity structures, high transaction volumes, or enterprise-grade reporting requirements, Dynamics 365 Finance and Supply Chain Management may be the more appropriate destination. This is a more substantial migration project and a higher licence cost, but it is the correct answer for some GP customers whose operational complexity has outgrown Business Central's scope. Advantage can advise on which platform fits your requirements as part of a free review.
Option C: stay on Dynamics GP and plan a managed exit
Technically, nothing stops you continuing on Dynamics GP. If operational or budget constraints make an immediate decision impossible, staying on GP with a clear, time-bound exit plan is a defensible position, particularly if you are more than two years from the 2029 deadline and have an active support agreement in place.
What is not defensible is indefinite continuation without a plan. The risks accumulate around consultant availability, add-on support and regulatory compliance, and the longer you wait, the more constrained your options become.
Some GP customers consider moving their on-premise GP installation to Azure as an interim step. This improves accessibility and removes some infrastructure overhead, but it does not extend the product lifecycle. You are still running the same software against the same support deadlines, just in a cloud-hosted environment. It can be a useful short-term measure while a migration is planned, but it is not a long-term solution.
The Bridge to Cloud 3 promotion: what it means for GP customers
If you are planning to move from Dynamics GP to Business Central, there is a time-limited Microsoft promotion worth understanding before you commit to a timeline.
Bridge to Cloud 3 launched on 1 January 2026 and runs until 31 December 2027. It is available to existing on-premise Dynamics customers, including GP, who have not yet moved to the cloud and who purchased their on-premise licences before 1 September 2024.
What Bridge to Cloud 3 offers
- 30 per cent discount on Dynamics 365 Business Central cloud licences, locked in for a fixed three-year term
- Dual use rights, meaning you can continue running your existing GP environment alongside Business Central during the migration, with no forced cutover date and no period where you are paying full price for two systems simultaneously
- Enhancement Plan extension at no additional cost during the term, keeping your GP installation supported and compliant while the migration proceeds
- 50 per cent discount on additional on-premise user licences during the transition, until 31 December 2027
What Bridge to Cloud 3 does not do
It does not extend the Dynamics GP lifecycle. The 2029 and 2031 deadlines remain unchanged. Bridge to Cloud 3 is a commercial incentive to migrate now, not a reason to stay.
There are eligibility conditions, including a minimum cloud licence value equal to your existing Enhancement Plan spend, and a fixed three-year non-cancellable term. Advantage can confirm your eligibility and model the financial comparison as part of a review conversation.
The 30 per cent discount is available until the end of 2027. A business that begins the migration process in 2026 has time to run a proper scoping and implementation project and enrol in Bridge to Cloud 3 before the window closes. A business that starts in 2028 does not. Given that Business Central prices increased in November 2025, locking in a three-year discounted rate now has a meaningful impact on five-year total cost of ownership. Enrolment is through a Microsoft Cloud Solution Provider partner. Advantage can manage this as part of an implementation engagement.
What a Dynamics GP to Business Central migration involves
The most common reason businesses delay ERP migrations is a belief that they will be enormously disruptive. A well-managed GP to Business Central migration for a UK SME is a structured process with a clear timeline. Here is what to expect.
Discovery and scoping
The first step is a thorough assessment of your current GP environment: which modules you actively use, what customisations and integrations are in play, what your data looks like, and how many users are involved. This produces a clear scope, timeline and fixed-price proposal. For GP migrations, this step also includes mapping which GP capabilities translate directly to Business Central and which need to be replicated via Microsoft Power Platform or ISV solutions from AppSource.
Data migration
Microsoft provides built-in cloud migration tools for businesses running GP 2015 or later, which simplifies the core data transfer. In a typical GP to Business Central migration, the data that moves across includes the chart of accounts, open transactions, customer and supplier master records, inventory and current-year financials. Historic data is typically archived rather than migrated. It remains accessible in your GP system or an archive but does not need to live in Business Central to run your business.
Customisations and integrations
Many capabilities that required add-ons in Dynamics GP are standard in Business Central. Others can be replicated through Microsoft Power Platform, Power Automate for workflow and Power BI for reporting, without ongoing add-on licence costs. A small number may require ISV solutions from AppSource. Every integration needs to be assessed individually as part of scoping. This is where thorough discovery pays for itself by preventing surprises mid-project.
Training and go-live
End-user training for Business Central typically takes one to two days for operational staff. The transition is smoother for teams already familiar with Microsoft 365, since the interface is consistent with Outlook, Excel and Teams. Advantage provides role-based training and a structured post-go-live support period as part of every implementation.
Realistic timelines
| Environment complexity | Typical project timeline | Notes |
|---|---|---|
| Up to 25 users, standard modules, few integrations | 3 to 6 months | Straightforward data migration, minimal customisation |
| 25 to 75 users, some customisation, multiple integrations | 6 to 12 months | More complex data mapping, integration rebuilds |
| 75+ users, significant customisation, complex integrations or multi-entity | 12 to 18 months | Full discovery required; phased go-live often appropriate |
These timelines run from initial scoping to go-live. They do not include the evaluation and partner selection phase, which typically adds two to four months before the project formally begins. A business that decides to move in Q3 2026 and completes partner selection by year end is well positioned for a 2027 go-live, comfortably ahead of the 2029 deadline and within the Bridge to Cloud 3 enrolment window.
Dynamics GP vs Business Central: the key differences
| Dynamics GP | Business Central | |
|---|---|---|
| Deployment | On-premise or hosted VM | Cloud-native on Azure |
| Product support | Ends December 2029 | Ongoing, continuous updates |
| Tax and regulatory updates | Until December 2029 only | Maintained by Microsoft indefinitely |
| Making Tax Digital compliance | Add-on dependent | Built in, Microsoft-maintained |
| Microsoft 365 integration | Limited, via connectors | Native: Outlook, Teams, Excel |
| Copilot and AI features | Not available | Embedded across finance and ops |
| Infrastructure overhead | Server maintenance, patching, refresh cycles | None, Microsoft managed |
| Licensing model | Perpetual + annual Enhancement Plan | Per user / month subscription |
| BTC3 discount available | N/A | 30% off for 3 years, until Dec 2027 |
Running Dynamics GP and not sure what to do next?
Advantage Business Systems is a Microsoft Solutions Partner helping UK SMEs plan and execute migrations from Dynamics GP to Business Central. Our free ERP review covers your current environment, what Business Central would give you, whether you qualify for the Bridge to Cloud 3 discount, and a realistic timeline and cost, all in around an hour with no obligation.
Book your free ERP review at advantage.co.uk or call us on 020 3004 4600.
Frequently asked questions
Common questions about the Dynamics GP end-of-life timeline, migration options and the Bridge to Cloud 3 promotion.
When does Microsoft Dynamics GP support end?
Microsoft Dynamics GP mainstream support, including product enhancements, regulatory updates, tax tables and technical support, ends on 31 December 2029. Security patches will continue until 30 April 2031, but only at Microsoft's discretion and only for critical vulnerabilities. New licence sales for new customers ended on 1 April 2026. Existing customers can continue using GP and adding users under their current agreements until the 2029 and 2031 deadlines. These dates apply to versions governed by Microsoft's Modern Lifecycle Policy. Older versions on the Fixed Lifecycle Policy may have earlier deadlines.
Is Dynamics GP being discontinued?
Yes. Microsoft has confirmed that Dynamics GP will reach end of life, with a phased wind-down running through to April 2031. The product is not being switched off immediately. Existing customers retain full support until December 2029. But no further development is planned, new customer sales have ended, and Microsoft has made clear that Business Central is the recommended migration path for GP customers moving to the cloud. The product is in managed wind-down, not active development.
What is the best migration path from Dynamics GP?
Microsoft's recommended migration target for Dynamics GP customers is Dynamics 365 Business Central, which is designed for small to mid-market businesses and includes built-in cloud migration tools for organisations running GP 2015 or later. For larger, more complex organisations with high transaction volumes or multi-entity requirements, Dynamics 365 Finance and Supply Chain Management may be more appropriate. The right answer depends on your user count, operational complexity and growth plans. Advantage offers a free ERP review that covers both options and produces a clear recommendation for your specific situation.
What is the Bridge to Cloud 3 promotion and does it apply to Dynamics GP?
Bridge to Cloud 3 is a Microsoft promotion running from January 2026 to December 2027 that offers a 30 per cent discount on Dynamics 365 Business Central cloud licences, locked in for a fixed three-year term. It is available to existing on-premise Dynamics customers, including Dynamics GP, who purchased their licences before September 2024 and have not yet moved to the cloud. Bridge to Cloud 3 also includes dual use rights, allowing you to continue running GP alongside Business Central during the migration. Enrolment must be completed through an authorised Microsoft Cloud Solution Provider partner such as Advantage before the December 2027 deadline.
How long does a Dynamics GP to Business Central migration take?
For most UK SMEs, a Dynamics GP to Business Central migration takes between six and twelve months from project kick-off to go-live, depending on business size, the depth of customisation and the number of integrations to be replicated. More complex environments with significant modifications or multi-entity structures can take up to eighteen months. This project timeline does not include the two to four months typically needed for evaluation and partner selection before the project formally begins. Starting the conversation in 2026 or early 2027 gives most UK businesses a comfortable runway to be live on Business Central well before the December 2029 support deadline.
Does Advantage Business Systems support Dynamics GP to Business Central migrations?
Yes. Advantage is a Microsoft Solutions Partner with experience implementing Business Central for UK SMEs, including businesses migrating from Dynamics GP and other legacy ERP platforms. We offer a free ERP review as the starting point. This covers your current GP configuration, what you would gain from Business Central, Bridge to Cloud 3 eligibility, and a fixed-price implementation proposal. There is no obligation and the review typically takes around an hour. Book at advantage.co.uk or call 020 3004 4600.
