Steps to upgrade your version of Sage 50 Accounting to add more features.
NOTE: Create a backup of your data file before upgrading to a higher version.
Upgrading to Premium or Quantum
- Open any Sage 50 file or the sample company as sysadmin in single-user mode.
- Go to Help, then Upgrade your Sage 50 product.
- Enter the new Serial Number.
- Select Retrieve my Key Code from Sage 50 online and click OK.
- Repeat the steps on any additional computers.
Upgrading to Accountant's Edition
- Uninstall Sage 50.
- Reinstall Sage 50.
- Use the new serial number for the Accountant's Edition.
- Repeat the steps on any additional computers.
Upgrading in Accountant's Edition from Pro to Premium / Quantum or from Premium to Quantum
- Open any Sage 50 file or the sample company as sysadmin in single-user mode.
- Select Accountant Edition from the main menu.
- Select Upgrade Company and follow the steps.
- Perform these steps on all workstations.
If you're interested in upgrading your Sage software, leave your details, and a Sales advisor will be in touch.

- Solution ID
- 220924350010334
- Last Modified Date
- Mon Feb 02 16:43:50 UTC 2026
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Product Details
Integrated Product: Blueprints
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