Net Dollar Retention (NDR) Calculator

How to Use the Net Dollar Retention Calculator

Enter Beginning ARR from a Cohort: total ARR from customers acquired in a specific period.

Enter Current ARR from Same Cohort: what those same customers pay today (after expansion, contraction, churn).

NDR = Current Cohort ARR / Beginning Cohort ARR x 100

NDR vs NRR: The Difference

NDR and NRR are used interchangeably in most SaaS reporting. Technically NDR tracks dollar-denominated retention while NRR can be measured against MRR or ARR. In Indian SaaS and public filings, they mean the same thing: how much revenue from existing customers is retained and expanded over a trailing 12-month window.

NDR Benchmarks (2026)

Best-in-class public SaaS: 120-135% NDR. Snowflake reports ~126-128%, down from its 158% peak in FY22. Datadog is in the 114-118% band. The 2021-era 150%+ numbers are gone; the post-ZIRP reset pulled everyone down 15-25 points.

Strong private SaaS: 115-130% NDR (top-quartile Series C and later).

Indian SaaS leaders: 110-125% NDR (Freshworks, Postman, Zoho-tier).

Average SaaS: 100-110% NDR.

SMB-focused SaaS: 85-100% NDR (higher churn is structural to the segment).

Usage-based caveat: Twilio once sat at 127%. It has dropped to ~100-104% because enterprise customers optimized their API spend in the efficiency era. Usage-based pricing is not a free NDR engine; it cuts both ways.

Building a 120%+ NDR Engine

1. Usage-based pricing: Revenue scales with customer consumption. Works brilliantly in growth cycles, compresses in downturns. Best paired with commitment floors.

2. Seat-based expansion: Product becomes more valuable as more team members adopt it. Slack, Figma, Notion, and Linear all compound this way.

3. Module upsells: Land with the base product, expand through paid add-ons. HubSpot is the reference architecture (free CRM, paid Marketing/Sales/Service/Operations/Content Hubs).

4. Reduce contraction: Annual contracts with auto-renewal prevent mid-cycle downgrades. Moving 50% of customers from monthly to annual typically adds 5-10 points of NDR.

5. Proactive CSM on expansion triggers: The cheapest expansion revenue is the one your product data has already flagged. Build playbooks off usage thresholds, seat utilization, and feature adoption.

Watch how to measure your SaaS growth and revenue expansion with net dollar retention