New Average Revenue Per User

What it measures

New CARR divided by the count of new contracted user seats added in the same period. It is the average annualized value of a new seat at the moment of acquisition — before expansion, downgrades, or churn move the account. New ARPU is per-seat; its sibling ARPNU is per-logo. The distinction only matters if you sell multi-seat licenses or per-user pricing tiers, where one logo can carry many seats at very different per-seat values.

Why it matters

New ARPU tells you the per-seat unit economics of new-customer acquisition. Pair it with your fully-loaded acquisition cost per seat and you get seat-level payback: if per-seat CAC is $5K and New ARPU is $12K, a new seat earns back its cost in roughly five months before any churn. Sales leaders use it to see whether pricing, packaging, and seat bundling are working. Finance uses it to model payback by seat. Investors read it as a signal of whether seat-level growth is efficient and sustainable — which is the whole game for multi-seat SaaS.

How to read it

Read New ARPU as the entry price per seat for your new customers. A high number means new logos are committing to high per-seat value; a low number usually means single-user accounts or cheaper seat tiers. Track it month over month and quarter over quarter, and compare to plan and to your own history — there is no universal benchmark. If it slips, interrogate why: are you moving downmarket from enterprise (many seats) to SMB (few seats)? Is per-seat pricing being discounted? Rising New ARPU usually reflects better sales execution, upmarket positioning, or pricing discipline. Always pair it with per-seat CAC — a high New ARPU bought with proportionally high per-seat CAC does nothing for payback.

What good looks like

Watch-outs

• Confusing New CARR with New Bookings. New CARR is the annualized run-rate; New Bookings is total contract value. A 3-year, $30K deal is $30K in bookings but only $10K New CARR per year — mixing them inflates New ARPU threefold.
• Not annualizing multi-year contracts. A 2-year, $20K deal is $10K/year CARR, not $20K. Skipping normalization distorts New ARPU and every payback calculation built on it.
• Conflating New ARPU with ARPNU. ARPNU is per-logo, New ARPU is per-seat. Always state which denominator you're using, or two people will read the same number to mean opposite things.
• Counting add-ons or upsells to existing customers. Only newly acquired seats belong in New ARPU. Seats added to an existing logo are Upsell CARR, not New CARR — including them overstates new-business economics.

Worked example