Vendor-commissioned source
Communication & collaboration: SaaS ROI 2026
Messaging, video, calling, email. Slack, Zoom, Teams, Loom.
Mins/user/day (low)
3
Mid
10
High
25
Cited ROI
150-350%
Forrester TEI
Source status
Slack for Marketing TEI (Forrester) — 100 min/wk by Y3. Slack for Sales — 28 min/day. Zoom in Teams — 52 min/wk per employee..
What this means for your buy decision
Communication tool savings are real but routinely overestimated — much of the saved meeting/coordination time gets absorbed by additional messaging volume. Slack's TEI uses an unusually high productivity-recapture assumption; the realistic recapture is 30-45%.
Year-2 price escalation
Typical Year-2 SaaS price escalation in this category: 7%. Account for this when modelling multi-year NPV — the calculator does this automatically using a 10% discount rate.
Source
↗ https://tei.forrester.com/go/Slack/SlackforMarketing/Verified 2026-06-02.
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