The Break-Even Point: When Self-Hosting Becomes Cheaper Than SaaS
The Break-Even Point: When Self-Hosting Becomes Cheaper Than SaaS
Self-hosting has upfront costs. SaaS has recurring costs. At some point, self-hosting wins. Here's exactly when.
The Break-Even Formula
Break-Even (months) = Migration Cost / (Monthly SaaS Cost - Monthly OSS Cost)
Where:
- Migration Cost = setup time + data migration + training
- Monthly SaaS Cost = per-user price × users
- Monthly OSS Cost = server + maintenance time
Break-Even by Tool Category
Simple Tools (Low migration cost)
| Switch | SaaS Monthly (10 users) | OSS Monthly | Migration Cost | Break-Even |
|---|---|---|---|---|
| Calendly → Cal.com | $120 | $7 | $500 | 4.4 months |
| 1Password → Vaultwarden | $40 | $5 | $300 | 8.6 months |
| Uptime monitoring → Uptime Kuma | $25 | $4 | $100 | 4.8 months |
| Bitly → Dub | $35 | $4 | $200 | 6.5 months |
| Typeform → Formbricks | $59 | $5 | $400 | 7.4 months |
Average break-even for simple tools: 4-9 months
Medium Tools (Moderate migration)
| Switch | SaaS Monthly (25 users) | OSS Monthly | Migration Cost | Break-Even |
|---|---|---|---|---|
| Slack → Mattermost | $219 | $15 | $3,000 | 14.7 months |
| Jira → Plane | $204 | $12 | $2,500 | 13 months |
| Notion → Outline | $300 | $10 | $4,000 | 13.8 months |
| Mailchimp → Listmonk | $100 | $8 | $1,500 | 16.3 months |
Average break-even for medium tools: 13-17 months
Complex Tools (High migration)
| Switch | SaaS Monthly (50 users) | OSS Monthly | Migration Cost | Break-Even |
|---|---|---|---|---|
| Intercom → Chatwoot | $790 | $25 | $8,000 | 10.5 months |
| Salesforce → Twenty | $1,250 | $20 | $15,000 | 12.2 months |
| Auth0 → Keycloak | $230 | $15 | $5,000 | 23.3 months |
Average break-even for complex tools: 10-24 months
Break-Even by Team Size
The bigger your team, the faster you break even (SaaS = per-seat, OSS = flat):
Slack → Mattermost
| Team Size | SaaS Monthly | OSS Monthly | Migration Cost | Break-Even |
|---|---|---|---|---|
| 5 | $44 | $7 | $1,500 | 40.5 months |
| 10 | $88 | $7 | $2,000 | 24.7 months |
| 25 | $219 | $10 | $3,000 | 14.4 months |
| 50 | $438 | $12 | $5,000 | 11.7 months |
| 100 | $875 | $15 | $8,000 | 9.3 months |
| 250 | $2,188 | $20 | $12,000 | 5.5 months |
Key insight: At 5 users, it takes 3+ years. At 100 users, under 10 months.
The Magic Numbers
| Tool Category | Minimum Team Size for <12 Month Break-Even |
|---|---|
| Simple tools | 3-5 users |
| Communication | 15-20 users |
| Project management | 15-25 users |
| Customer support | 10-15 users |
| CRM | 20-30 users |
| Authentication | 30-50 users |
Break-Even for Full Stack Migration
10-Person Team (12 tools)
Total SaaS Monthly: $1,200
Total OSS Monthly: $85 (server + 3hr maintenance)
Total Migration Cost: $12,000
Break-Even = $12,000 / ($1,200 - $85) = 10.8 months
50-Person Team (12 tools)
Total SaaS Monthly: $5,100
Total OSS Monthly: $125 (server + 4hr maintenance)
Total Migration Cost: $25,000
Break-Even = $25,000 / ($5,100 - $125) = 5 months
100-Person Team (12 tools)
Total SaaS Monthly: $10,200
Total OSS Monthly: $165 (server + 4hr maintenance)
Total Migration Cost: $35,000
Break-Even = $35,000 / ($10,200 - $165) = 3.5 months
Factors That Accelerate Break-Even
1. SaaS Price Increases
A 10% annual increase means your SaaS cost is higher than projected:
Year 1 Slack (50 users): $5,250
Year 2 (at 10% increase): $5,775
Year 3: $6,353
This makes OSS break-even happen sooner than the static calculation shows.
2. Shared Infrastructure
Running multiple OSS tools on the same server:
1 tool: $7/month server
5 tools: $7/month server (same!)
10 tools: $14/month server
Per-tool cost drops from $7 to $1.40
3. Team Growth
Adding users to SaaS = more cost. Adding users to OSS = $0:
Start: 25 users, SaaS $219/month
Hire 10 more: SaaS $306/month (+$87)
OSS stays: $10/month
4. Already Have DevOps
If your team already manages servers:
- Setup time is lower
- Maintenance is marginal cost
- Break-even accelerates by 30-50%
Factors That Delay Break-Even
1. High Hourly Rate
If your time is worth $200/hr instead of $100/hr:
- Maintenance cost doubles
- Migration cost doubles
- Break-even extends 30-50%
2. Low Team Size
Under 5 users, most SaaS free tiers are sufficient:
- Break-even may never happen for some tools
- Focus on tools without free tiers
3. Complex Integrations
Heavy integration rewiring adds migration cost:
- Each integration: +$200-500 to migration
- 20 integrations: +$4,000-10,000
4. Compliance Requirements
If you need HIPAA/SOC2 compliance on self-hosted:
- Security audit: $5,000-20,000
- Ongoing compliance: $2,000-5,000/year
- May negate savings for small teams
Decision Framework
| Team Size | Recommendation |
|---|---|
| 1-5 | Use SaaS free tiers. Self-host only for privacy/learning |
| 5-15 | Self-host quick wins (passwords, scheduling, monitoring) |
| 15-50 | Self-host core stack (chat, PM, docs, analytics) |
| 50-100 | Self-host everything except design tools |
| 100+ | Self-host aggressively — savings are massive |
The Bottom Line
Break-even typically happens in:
- 3-6 months for large teams (50+) doing full-stack migration
- 10-15 months for medium teams (15-50) migrating core tools
- 12-24 months for small teams (5-15) migrating selectively
After break-even, every month is pure savings. Over 3-5 years, the cumulative savings are 5-20x the migration cost.
The question isn't whether self-hosting is cheaper — it's when.
Calculate your break-even point for any tool at OSSAlt.