NRR vs NDR: Are Net Revenue Retention and Net Dollar Retention the Same?

NRR vs NDR is a labelling question. Net revenue retention, net dollar retention, dollar-based net retention rate and dollar-based net expansion rate all name the same ratio: revenue this period from the customers you had last period, divided by what those same customers paid last period, with revenue from new customers excluded. The word dollar means the number is measured in money instead of accounts. It carries no other arithmetic.

The expanded form most teams use, starting revenue plus expansion minus contraction minus churn, over starting revenue, is the same statement rearranged. How to calculate net revenue retention works through that version line by line. The interesting question is not which name to use. It is which of the three switches your version of the ratio has been set to, because nobody writes them down.

That question has been asked in the Reddit corpus for two years and answered a dozen different ways. Nine of the 33,600 posts we read mention net revenue retention and two mention net dollar retention, and no two of them describe the same procedure. The people arguing about NRR vs NDR in your company are arguing about the procedure, with the acronym standing in for it.

The naming follows the audience. Net revenue retention grew up inside SaaS operating teams; net dollar retention and dollar-based net retention rate came from the investor and filing side, where dollar distinguishes a revenue-weighted number from a logo-weighted one. Public companies then define their own version in their filings, and the definitions do not match each other.

Three names, three methods, one idea. Twilio states the consequence in its own risk factors, and it is the sentence to bring to any meeting where two retention numbers are being compared.

NRR vs NDR disagree at three switches, and each one moves the answer by several points on the same accounts. The first is the cohort: who is in the denominator and whether customers that went to zero stay in it. The second is the revenue basis: point-in-time ARR against revenue recognised over the window. The third is the window: a point-in-time comparison against a trailing twelve months.

Two further settings hide inside the cohort switch and cause most of the remaining arguments: whether services and one-off revenue count, and whether a price increase counts as expansion. Decide both once, write them into the fingerprint, and apply them to every quarter you restate.

Median net revenue retention for private B2B SaaS sits at 101% in the two largest 2025 surveys, and the honest answer to what is good depends on which population you are in. Survey medians and billing-platform medians are about 19 points apart, and the gap is a population difference rather than an error in either one.

Read the row that matches your business and ignore the rest. A self-serve product with $3,000 contracts and a billing platform behind it lives nearer the 82% row than the 101% row, and a consumption business with committed contracts can print 120% while losing a quarter of its logos. Our NRR calculator runs the figure from a cohort export if you want your own number before arguing about anyone else's.

Pick one name, use it everywhere, and publish the fingerprint beside it. Between NRR and NDR there is nothing to choose on the arithmetic, so choose on the audience: investors and finance read net dollar retention or dollar-based net retention, operating teams read net revenue retention. What matters is that the deck, the dashboard and the comp plan all mean the same procedure by it.

The pairing line matters most. Net revenue retention has no churn complement, because expansion has no ceiling, so an NRR of 115% can sit on top of a gross revenue retention of 80% and hide a fifth of the base walking out. Retention rate vs churn rate covers why those two numbers never add to 100%, and how to hit a gross retention target covers the floor number itself.

A target of 120% to 175% on one person's accounts is a different metric again: portfolio NRR computed on accounts that change hands. How do I hit a CSM NRR target on my own accounts deals with that case, where the fingerprint has to say what happens when accounts are reassigned mid-quarter.

Settling it takes one cohort export and about two hours. Rebuild both numbers from the same list, then compare the two fingerprints and not the two figures, because the figures will keep disagreeing until the switches match.

1. 1

   Export one cohort, dated

   Every customer paying on the first day of the window with what they paid that day. Both teams work from this file, and any account that joined later is deleted from it now.

2. 2

   Ask each side for its fingerprint, in writing

   Cohort, revenue basis, window, inclusions. Most arguments end here, when one side discovers it has been using revenue recognised and the other has been using ARR on two dates.

3. 3

   Recompute both ways from the same file

   Point-in-time ARR ratio, then trailing revenue ratio. Write both numbers down with their basis in the label. A gap of several points is normal and is the point of the exercise.

4. 4

   Decide the house basis and date it

   One basis for internal reporting, one for the board if they differ, and a date from which each applies. Restate the last four quarters on the new basis so the trend line stays honest.

5. 5

   Put gross revenue retention beside it

   Same cohort, same window. GRR cannot exceed 100%, so the pair immediately shows whether the net number is growth on a sound base or expansion papering over leakage.

6. 6

   Write it into the metric dictionary

   One page, the fingerprint above, the owner named, reviewed once a quarter. A metric name that carries its own definition survives being pasted into a deck by somebody who was not in this meeting.

Expect the rebuild itself to be the slow part. Reviewers in the G2 corpus describe assembling these numbers by hand every cycle, which is where definitions drift between quarters even when everybody agrees in the meeting.

Twenty-five of the 4,978 public G2 reviews we read mention NRR, and the pattern in them is consistent: teams buy software to see the number, then rebuild the number outside it anyway. The fingerprint is what makes the rebuild reproducible. Keeping renewal management and the retention number on one system is what makes the rebuild unnecessary.

GainTrace computes retention from billing and CRM movements on a named cohort, so the cohort, the revenue basis and the window are set once and hold across every quarter. Net and gross retention sit on the same screen, each account's expansion and contraction is traceable to the movement that caused it, and expansion intelligence shows which accounts are driving the net number. Renewal forecasting carries the same cohort into the quarter ahead.