Net Dollar Retention (NDR) / Net Revenue Retention (NRR)

What Is Net Dollar Retention (NDR)?

Net dollar retention is the percentage of recurring revenue a company keeps from an existing customer cohort over a period, after expansion, downsell, and churn, excluding any revenue from new customers. Net revenue retention (NRR) is the same metric under a different name, and above 100 percent means the base grew on its own.

How Net Dollar Retention Works

Net dollar retention isolates one question from every other growth input: what happened to the customers you already had? You take a defined cohort, usually every customer active twelve months ago, freeze it, and measure that same group today. New logos signed in the interim are deliberately excluded, because including them would let acquisition spending hide a leaking base.

Four forces move the number. Expansion revenue pushes it up through added seats, tier upgrades, usage growth beyond a commitment, cross sold modules, and contractual price uplifts. Downsell, sometimes called contraction, pulls it down when a customer stays but reduces spend, typically by cutting seats at renewal. Churn removes the customer entirely. The result is a single figure that tells you whether the installed base is a growing asset or a slowly draining one.

The direction matters more than most operators admit. At 120 percent net dollar retention, a company that never signs another customer still grows 20 percent a year. At 85 percent, that same company has to win 15 percent of its revenue in new business just to stand still, and every dollar of that replacement revenue carries full acquisition cost.

How to Calculate Net Dollar Retention

Measure the cohort's revenue at the start of the period, then track what happened to that same cohort by the end.

Formula: NDR = (Starting ARR + Expansion ARR - Downsell ARR - Churned ARR) / Starting ARR x 100

Worked example. A company enters the year with $4,000,000 of ARR from existing customers. Over twelve months that cohort adds $900,000 in expansion, loses $150,000 to downsell, and loses $350,000 to churn. The ending cohort revenue is $4,400,000, so net dollar retention is $4,400,000 divided by $4,000,000, which is 110 percent. Any revenue from customers signed during the year is left out of both the numerator and the denominator.

Net Dollar Retention in Plain English

Imagine you sold nothing new all year and fired the entire sales team. Net dollar retention tells you what your revenue would look like twelve months later. Above 100 percent, the business quietly grows without you. Below 100 percent, it shrinks, and new sales are refilling a bucket rather than adding to it.

Net Dollar Retention vs Gross Revenue Retention

Gross revenue retention applies the same cohort logic but ignores expansion, so it can never exceed 100 percent. Using the numbers above, gross retention is $4,000,000 minus $150,000 of downsell and $350,000 of churn, divided by $4,000,000, which is 87.5 percent. The 22.5 point spread between 110 percent net and 87.5 percent gross is the entire contribution of expansion revenue.

Read the pair together, always. Strong net dollar retention with weak gross retention means a handful of enthusiastic accounts are masking real losses across the rest of the base. That is a fragile position: lose one of the expanding accounts and the headline number collapses. Gross retention measures whether the product holds. Net retention measures whether it grows.

What Is a Good Net Dollar Retention Benchmark?

The widely cited target is 120 percent, drawn largely from enterprise software companies at IPO scale with seat based or consumption based pricing. It is a poor benchmark for most businesses. Enterprise focused vendors commonly land between 110 and 130 percent. Mid market tends to sit near 100 to 110 percent. SMB products, where customers go out of business and switching costs are low, often run at 90 percent or below and can still be excellent businesses if acquisition is cheap and payback is fast.

Two definitional details distort comparisons more than anything else. Some companies report net dollar retention only for customers above a revenue threshold, which strips out the churn heavy tail. Others include price increases as expansion, which turns an annual uplift clause into a retention story. Ask which convention is in use before comparing two companies.

Net Dollar Retention and the Closing Motion

Net dollar retention is decided at Renew and Collect, the last two stages of the Closing Motion. Renewals and expansions are closes, and they suffer from the same fragmentation as new business: a new order form, another procurement cycle, another budget conversation about paying a year upfront. Buyers who cannot absorb a larger annual invoice downsell instead of expanding, which shows up as contraction. Ratio addresses that at the payment structure. With Ratio Trade, a buyer can spread an expansion or renewal monthly or quarterly while the seller collects the full contract value upfront, so a customer's budget cycle stops capping the upsell. High net dollar retention then produces cash now rather than a growing receivable.

Common Questions About Net Dollar Retention

Is net dollar retention the same as net revenue retention?

Yes. Net dollar retention and net revenue retention (NRR) describe the identical calculation, and the terms are used interchangeably in reporting and diligence. Some companies also publish a logo retention figure, which counts customers rather than dollars and is usually much lower.

Can net dollar retention exceed 100 percent while customers are churning?

It can, and often does. Expansion from the remaining accounts only needs to outweigh the combined losses from downsell and churn. This is why gross revenue retention should be reported alongside it, since the gross number reveals the churn that expansion is covering.

What time period should net dollar retention be measured over?

Twelve months is standard, because it captures a full renewal cycle for annual contracts. Monthly or quarterly net dollar retention is useful for month to month products but noisy for enterprise books, where a single renewal date can swing the result several points.

Key Takeaways

• Net dollar retention measures revenue kept and grown from an existing cohort, with new customers excluded.
• The formula is starting ARR plus expansion, minus downsell and churn, divided by starting ARR, times 100.
• Above 100 percent the installed base grows on its own; below 100 percent new sales only refill the bucket.
• Always pair net dollar retention with gross revenue retention, since expansion can mask serious churn.
• The 120 percent benchmark suits enterprise vendors and misleads most SMB and mid market businesses.