Summary

  • Bandwidth reported Q3 net retention of 113%, against 105% a year earlier, and said higher commercial messaging activity was the primary driver.
  • The same filing records about $3m of political-campaign messaging revenue before the November 2026 U.S. midterms; the company does not expect it to recur in 2027.

The retention number improved. Its calendar still matters.

Bandwidth’s Form 10-Q puts net retention at 113% for the three months ended 30 September, up from 105% in the same period of 2025. The company says higher commercial messaging activity primarily drove the increase. That is a stronger operating signal than a bare revenue-growth headline: the measure follows customers who were already generating revenue a year earlier.

But 113% is not a one-quarter reading. Bandwidth compares revenue from a prior-year customer cohort with revenue from that same cohort in the current quarter, then averages that result with the corresponding results from the previous three quarters. The published rate averages four quarterly cohort-revenue ratios. It reports expansion across the existing customer cohort; account-level growth and message volume sit outside that aggregate.

The filing gives the quarter’s messaging mix another date stamp. Programmable Messaging revenue increased 26%, driven by commercial demand and about $3m of political-campaign messaging ahead of the November midterms. Bandwidth does not expect that campaign revenue to recur in 2027. The company attributes the NRR increase primarily to commercial messaging. Its filing gives neither a Q3 campaign-excluded NRR nor the campaign revenue included in the cohort calculation.

Bandwidth’s June figures show why the definition matters. Its Q2 filing reported standard NRR of 107%, down from 112% a year earlier, and attributed the decline primarily to less political messaging across the preceding four quarters. A September investor presentation showed adjusted NRR of 113% as of 30 June after excluding political-campaign revenue of $3m and $46m in the respective 12-month periods. The June filing’s standard rate was 107%, six points below that adjusted view; the two figures use different campaign treatment.

The latest 113% is the standard Q3 rate, not the June adjusted figure. Same number, different quarter and different basis. Management’s stated primary driver is commercial messaging; the seasonal campaign line belongs in the next year’s comparison, where its absence will be visible.

For 2027, the test is whether commercial usage by existing customers can keep expanding after the campaign revenue rolls out of the comparison. A four-quarter average softens a seasonal jolt; it also makes the operating signal slower to read. The 2027 test is whether commercial usage can keep expanding as that campaign revenue leaves the comparison. A same-basis campaign-excluded series would put a number on the seasonal drag.

Sources