Microsoft 365 Cost Optimisation Guide for Irish Businesses

Problem #1: Paying for Unused Licenses

The Issue

This is the most common cause of inflated Microsoft 365 costs. Over time, businesses accumulate unused licenses that quietly drain budgets.

• Orphaned accounts from former employees
• Seasonal workers licensed year-round
• Duplicate user accounts
• Contractors with active licenses after project completion

An Irish marketing agency with 45 employees was paying for 58 licenses, costing over €1,500 per year unnecessarily.

The Solution

1. Export users from Microsoft 365 Admin Center
2. Match users with HR employee records
3. Identify inactive accounts (60+ days)
4. Remove licenses or convert to shared mailboxes

Problem #2: Over-Licensed Users

Microsoft 365 Pricing Overview

Plan	Price / User / Month
Business Basic	€5.10
Business Standard	€10.90
Business Premium	€19.70
E3	€31.70
E5	€51.60

20 users on E3 who only need Business Standard waste €4,992 per year.

Problem #3: Not Leveraging Included Features

Third-Party Tool	Monthly Cost	Microsoft 365 Alternative
Zoom	€13.99	Microsoft Teams
Dropbox	€12.50	OneDrive and SharePoint
Slack	€6.75	Microsoft Teams
Asana	€10.99	Microsoft Planner
Calendly	€8.00	Microsoft Bookings

Problem #4: Poor Email Archiving Strategy

The Issue

Email storage is an invisible cost that increases quietly over time. Many Irish businesses do not realize they are paying premium license fees for mailbox storage when Microsoft 365 already includes free alternatives.

Common costly mistakes include:

• Oversized mailboxes on higher license tiers instead of using archive mailboxes
• No retention policies, resulting in emails being kept indefinitely
• Paying €10 to €50 per month for ex-employee mailboxes instead of using shared mailboxes

The Solution

1. Enable archive mailboxes to provide unlimited storage for older emails
2. Create retention policies to archive emails after two years and delete non-essential data after seven years
3. Configure MRM policies to automate email lifecycle management
4. Convert departed employee mailboxes to shared mailboxes instead of maintaining paid licenses

Irish regulatory retention requirements:

• General business records: 6 years under the Companies Act
• Tax records: 6 years per Revenue Commissioners guidance
• Employment records: minimum of 8 years

Problem #5: Inefficient OneDrive Storage Management

The Issue

Many Irish organizations use OneDrive for shared content that should live in SharePoint, leading to duplicated files and unnecessary storage growth.

• Multiple users storing copies of the same large files
• Large shared assets stored in individual OneDrive accounts
• No storage limits, allowing personal data to consume business storage
• Excessive version history inflating storage usage

The Solution

Use OneDrive for: personal working files, drafts, and documents under active development.

Use SharePoint for: team documents, company templates, shared project files, and large media assets.

1. Audit OneDrive usage and identify heavy storage users
2. Migrate shared content to SharePoint libraries
3. Set OneDrive quotas such as 100GB for standard users and 500GB for power users
4. Limit version history to 100 versions per document
5. Run quarterly storage cleanup campaigns

Problem #6: Missing Out on Non-Profit and Education Discounts

The Issue

Many eligible Irish organizations are unaware that they qualify for significant Microsoft 365 discounts. Registered charities and educational institutions can receive up to 75 percent off standard pricing.

Plan	Commercial Price	Non-Profit Price	Discount
Business Basic	€5.10	€0	100%
Business Standard	€10.90	€2.70	75%
Business Premium	€19.70	€4.90	75%
E3	€31.70	€7.90	75%
E5	€51.60	€12.90	75%

The Solution

1. Check eligibility through Microsoft’s non-profit program
2. Register using your Irish Charities Regulatory Authority number
3. Submit proof of tax-exempt status
4. Complete validation, typically within one to two weeks
5. Migrate existing subscriptions with a Microsoft partner

Problem #7: No Microsoft 365 Governance

The Issue

Without governance, Microsoft 365 environments grow chaotic and expensive.

• Uncontrolled Teams creation and sprawl
• Overlapping and orphaned SharePoint sites
• External sharing risks that can lead to GDPR penalties
• Higher support costs due to poor content discoverability

The Solution

Implement a Practical Governance Framework

Team and Site Creation

• Standardized naming conventions
• Automatic expiration and renewal
• Minimum of two owners per Team or site

Lifecycle Management

• Inactivity notifications after 90 days
• Archiving after 180 days
• Deletion after 12 months unless under legal hold

External Sharing Controls

• Authenticated sharing only
• Mandatory link expiration
• Automatic guest removal after inactivity

Storage Governance

• Version limits per library
• Seven-year retention policies
• Regular cleanup campaigns

Your Microsoft 365 Cost Optimization Action Plan

Week 1: Quick Wins

• Export license list
• Remove unused accounts
• Convert former employee mailboxes
• Enable archive mailboxes

Week 2: License Optimization

• Review license assignments
• Create user personas
• Downgrade licenses where appropriate

Month 1 to 3

• Audit third-party tools
• Consolidate into Microsoft 365
• Optimize storage and governance