Net New ARR

TL;DR

Net new ARR is the change in recurring revenue in a period after all inflows and outflows. The formula is New ARR + Expansion ARR - Churn ARR - Contraction ARR. It is the metric that tells you whether the business is growing or shrinking. Gross bookings alone can hide a shrinking customer base behind strong new logo sales. Updated April 2026.

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Why Net New ARR Is the Truth-Telling Metric

Net new ARR is defined as the total change in annualized recurring revenue during a period, combining new customer acquisition, expansion from existing customers, and losses from churn and contraction. It is the answer to a simple question: is the recurring revenue base bigger or smaller than it was at the start of the period?

The reason it matters more than gross bookings is arithmetic. A company that closes $8M of new ARR in a quarter looks strong until you learn that $10M churned or contracted. The real story is that the business shrank by $2M despite what looked like a solid sales quarter. Net new ARR catches this. Bookings-only reporting hides it.

The Four Components of the Formula

Net New ARR = New ARR + Expansion ARR - Churn ARR - Contraction ARR

Each component has a specific definition and a specific team that owns it:

Component	Definition	Owner
New ARR	Annualized recurring revenue from net-new logos	New business sales
Expansion ARR	Upsell, cross-sell, and seat expansion from existing customers	Account management, CS
Churn ARR	Annualized recurring revenue lost from cancelled customers	Customer success, product
Contraction ARR	Downgrades, seat reductions, or pricing tier drops	Account management

For a company that added $5M in New ARR, $2M in Expansion, lost $1.5M to Churn, and $500K to Contraction, net new ARR is $5M. The base grew by $5M.

Why Net New ARR Is the Board-Level Metric

Public SaaS investors and private boards treat net new ARR as the cleanest proxy for durable growth. It combines go-to-market efficiency with retention health. A company can juice new ARR with aggressive discounting, but if those customers churn quickly or contract at renewal, net new ARR catches it. A company can hide a weakening new business motion with strong expansion from a few large accounts, but over time that pattern also shows up.

Pair net new ARR with net revenue retention for a complete picture. Net new ARR tells you total change. NRR tells you how much of that change comes from the installed base versus new acquisition. Together they show the shape of the growth.

Common Mistakes in Calculating Net New ARR

The most frequent error is double-counting or missing pieces of expansion. When an existing customer upgrades their plan, the full new ACV is not expansion. Only the incremental portion above their previous ARR counts. A customer at $100K/year who upgrades to $150K/year contributes $50K of expansion ARR, not $150K.

Similarly, contraction is often missed. A customer who renews at a lower price or fewer seats still renewed — no churn event shows in the system — but their ARR decreased. That is contraction, and it has to be captured separately.

Another common error is mixing booked ARR and billed ARR in the calculation. Net new ARR should be consistent with how the company reports ARR overall. If the company reports billed ARR to the board, net new ARR should be calculated on the same basis. Mixing the two creates reconciliation gaps that take weeks of finance time to resolve.

How Net New ARR Feeds the Plan

Every annual plan in a SaaS company ultimately resolves to a net new ARR target. If you need to grow from $100M to $130M ARR, the plan is $30M of net new ARR, further segmented into new business, expansion, and retention targets. Those sub-targets drive quotas, headcount plans, and marketing budgets.

Where planning often goes wrong is underestimating the drag from churn and contraction. A plan that targets $30M of net new ARR against a base where $15M is projected to churn requires $45M of gross adds. That is a very different sales capacity and marketing investment question than planning for $30M of gross adds. Revenue forecasting done well separates these components and makes the gross-versus-net conversation explicit. For more on how to think about gross vs. net in planning, see the revenue forecasting guide and the ARR glossary entry.

Net New ARR vs. Net New Revenue

Net new revenue is the broader cousin of net new ARR and is often used interchangeably outside of SaaS finance teams. Where net new ARR specifically counts annualized recurring revenue, net new revenue can include non-recurring components: services, one-time fees, professional services revenue, and usage-based overages. For a pure subscription business, the two converge. For a SaaS business with a meaningful services arm or a usage-based pricing tier, they diverge.

The distinction matters at planning time. A board that asks for net new revenue is asking about total reported revenue growth, including services. A board that asks for net new ARR is asking specifically about the durable subscription base. Companies that report both numbers without distinguishing them invite reconciliation arguments at every quarterly review. Pick a primary definition, anchor it in the operating model, and report the other metric as a supplemental view.

What Net ARR Means in Practice

The term "net ARR" is shorthand for the same calculation, used most often in board decks and investor materials. It captures the same idea: total ARR change, with churn and contraction netted against new and expansion. The reason finance teams sometimes prefer "net ARR" over "net new ARR" is that the former implies a snapshot (ending ARR minus starting ARR), while the latter implies a flow (additions minus subtractions over the period). Mathematically they resolve to the same number when the categories are defined cleanly.

For diligence and reporting, the four components below should always be exposed underneath the headline net ARR number:

- New ARR from net-new logo wins - Expansion ARR from existing customer upgrades and seat growth - Churn ARR from cancelled or non-renewed accounts - Contraction ARR from downgrades, seat reductions, or pricing-tier drops

When investors push back on a net ARR number, they are almost always asking to see one of these four sub-components in more detail. Teams that can produce that breakdown without scrambling demonstrate that the revenue forecasting discipline is real. Teams that cannot signal the opposite. For the operating cadence that makes this kind of reporting routine, see the sales forecasting complete guide.

Tracking Net New ARR in the CRM

The cleanest way to measure net new ARR is to instrument every booked opportunity with a "type" field: new, expansion, renewal, contraction, churn. This single piece of metadata, applied consistently, makes the four-component calculation trivial. The reason most companies struggle with the metric is not arithmetic; it is data hygiene. When the same renewal is booked as "new" by one rep and "renewal" by another, the rollup is unreliable and the finance team spends weeks reconciling against billed ARR.

Pair this with monthly reconciliation against booked ARR and a clean view of revenue predictability emerges. The mechanics are simple. The discipline is the work.