Migrating from Sage to Microsoft Dynamics 365 Business Central
Sage does what it was built to do — bookkeeping. The problem is most businesses that started on Sage 50 or Sage 200 have outgrown it years ago, and now run half their operation through a maze of spreadsheets and bolt-on add-ons that Sage was never designed to talk to. We move that whole mess into one system, and we've done it enough times to know where the awkward bits usually are.
Book a Sage Migration Assessment
Why do growing businesses outgrow Sage?
Sage 50 and Sage 200 are built around finance as a standalone function. The moment a business needs finance, stock, sales and operations to actually share live data — multiple sites, real-time margin visibility, one version of the truth — Sage starts needing third-party add-ons to cover the gap, and those add-ons rarely talk to each other cleanly.
We hear the same handful of complaints on almost every Sage migration call: month-end takes the better part of two weeks because half the numbers live in Excel. Nobody can see real stock levels across more than one site without exporting a report first. Bank reconciliation is still done by eye, line by line. And whatever manufacturing or job-costing add-on was bolted on five years ago has quietly become the least reliable part of the whole setup.
What's actually different once you're in Business Central
| Area | Sage 50 / Sage 200 | Business Central |
|---|---|---|
| Stock across sites | Usually one warehouse per company file, or a bolt-on to fake multi-site | Native multi-location inventory in one database |
| Reporting | Static reports, heavy reliance on exporting to Excel for anything real-time | Native Power BI, live dashboards without exporting anything |
| Manufacturing/job costing | Usually a separate third-party add-on with its own database | Built into the platform, on the same data as finance |
| Multi-entity | Separate company files, manually consolidated | Multiple companies in one environment, easier consolidation |
| Microsoft 365 integration | Limited, mostly manual exports | Native Outlook, Excel and Teams integration |
What migrates from Sage, and what doesn't
Not everything in your Sage database is worth carrying forward, and pretending otherwise just drags old clutter into a clean system.
What we migrate
Chart of accounts (remapped to BC's structure), customer and supplier records, open sales and purchase invoices, stock items and current on-hand quantities, and fixed asset registers.
What usually stays archived
Years of fully settled historical transactions — these get archived and remain accessible for audit purposes, rather than cluttering a fresh BC database with detail nobody will ever query again.
The gotchas we've learned to check for first
Nominal codes rarely map cleanly
Sage's chart of accounts structure and BC's G/L account structure don't line up one-to-one. We map this properly up front rather than forcing a bad fit that finance has to work around forever.
The "temporary" Sage add-on that became permanent
Whatever third-party manufacturing, EDI or POS bolt-on has been quietly running your operation for years needs a proper replacement plan, not an afterthought.
VAT and Making Tax Digital bridging software
If Sage's MTD setup was ever handled by a separate bridging tool, that whole process gets rebuilt natively in BC — worth flagging early so nothing falls through the cracks at quarter-end.
A realistic Sage-to-BC timeline
Discovery & Data Audit
1–2 weeks reviewing your current Sage setup, add-ons, and what's actually worth bringing across.
Build & Data Migration
4–6 weeks configuring BC and migrating chart of accounts, open transactions and master data.
UAT, Training & Go-Live
2–3 weeks of testing against real scenarios, role-based training, and a planned cutover weekend.
What changes on the licensing side
Sage licensing is typically per-company or per-module. Business Central licenses per user, per month, across two main tiers — Essentials covers finance, sales, purchasing and inventory; Premium adds manufacturing and service management. Most Sage 50 users fit comfortably in Essentials. Sage 200 users with a manufacturing add-on usually need Premium.
The businesses that outgrow Sage fastest
Distribution
Multi-site stock visibility Sage was never built to handle natively.
Manufacturing
Businesses that bolted a third-party MRP tool onto Sage years ago and are ready for something native.
Multi-entity groups
Companies running several Sage files that need proper consolidation.
Fast-growing SMEs
Businesses that have simply outgrown a single-user-file accounting package.
Where BC's native modules replace your old Sage add-ons
Most Sage setups we migrate have at least one bolt-on plugging a gap. Business Central closes most of these natively, and where it doesn't, there's usually a proper AppSource ISV solution rather than another disconnected patch.
Manufacturing add-ons
Replaced by BC's native manufacturing module in the Premium edition — BOMs, routings and production orders on the same data as finance.
Reporting plug-ins
Replaced by native Power BI, so reports pull live rather than from last night's export.
MTD bridging tools
Replaced by BC's native VAT submission, removing a separate piece of software from the stack entirely.
What Sage-to-BC migrations typically deliver
Aggregate results from recent NetMonkeys Business Central implementations.
Faster month-end close, on average, once manual reconciliation is retired.
Reporting ROI versus manual, Excel-built reports.
Legacy systems typically retired once BC replaces Sage plus its add-ons.
Reduction in duplicated data entry across finance and operations.
Why migrate from Sage with NetMonkeys
100+ BC Projects
A decade of BC and NAV implementations across UK SMEs, several from a Sage starting point.
Microsoft Solutions Partner
Certified across Business Applications, re-verified annually.
UK Consultants
Every consultant and project manager is UK-employed.
No Guesswork on Data
We map your chart of accounts properly before touching a single migration script.
Sage 200 to Business Central in 12 weeks
A West Yorkshire manufacturer running Sage 200 for finance and a separate spreadsheet web for everything else had an 11-day month-end close and no real stock visibility. We designed BC Premium with Power BI, migrated three years of live data, and went live at the start of a new quarter. Month-end close is now two days, with 99.1% stock accuracy and 94% user adoption inside three months.
Sage to Business Central: common questions
Can we migrate from Sage 50, or only Sage 200?
Both. Sage 50 migrations are usually more straightforward since there's less customisation to account for, while Sage 200 migrations more often involve replacing a third-party add-on as part of the project.
Will we lose our historical transaction data?
No — it's archived and remains accessible for audit and reference. We typically migrate open transactions and current balances live into BC, rather than importing years of settled history nobody will query again.
How long does a Sage migration usually take?
Most run 8–12 weeks from discovery to go-live, depending on how many Sage add-ons are involved and how much data needs remapping.
What happens to our Sage add-ons and integrations?
We review each one during discovery. Most get replaced by native BC functionality; anything genuinely specialist gets replaced with a proper BC-compatible ISV add-on instead of staying as a disconnected patch.
Is Business Central more expensive than Sage?
Per-user licensing is often comparable once you account for what Sage's add-ons were costing separately. The bigger saving is usually in staff time no longer spent reconciling data across disconnected systems.
Ready to leave Sage behind?
A free 45-minute assessment of your current Sage setup, with a straight answer on what a migration would actually involve.
