Klaviyo (KVYO) Q3 2026 earnings review
Klaviyo's profit tops its plan, but its sales growth slows
Klaviyo, which makes marketing and customer service software for consumer brands, beat its profit target by a wide margin while its sales growth continued to cool. Third-quarter revenue rose 25% from a year ago, and operating profit, excluding one-offs, reached $57 million against a $40 million to $43 million plan. New finance chief Erica Smith raised the full-year profit outlook, but the fourth-quarter forecast has sales growth slowing to 21%.
| Revenue | $387.2M +24.6% from a year ago |
|---|---|
| Operating profit, excluding one-offs | $56.9M plan was $40–43M |
| Net revenue retention rate | 108% 109% last quarter |
| Full-year profit outlook | Raised $19.5M middle of the range: $234.5M |
⚖️ Verdict: 🟢 Bullish
The story got better because passing mobile carrier fees through to customers and holding down overhead costs restored the margin expansion that text-messaging growth had erased. Last quarter Klaviyo cut its annual profit forecast to pay for an acquisition, and this quarter it raised that forecast well past where it started. One caution: existing customer retention slipped a point to 108%, and management still has not disclosed any revenue from its new AI agents.
The question now is whether Klaviyo's new AI agents and enterprise deals can stop its top-line growth from dropping below 20% next year. Either large brands start paying for automated customer service agents, or those tools remain free features while smaller merchants use outside chat apps like ChatGPT and Claude. Management's first full-year 2027 outlook next quarter will settle it.
🐂 Bull Case
Operating Profit Topped the Plan by $15 Million
Klaviyo, which makes marketing and customer service software for consumer brands, projected $40 million to $43 million of third-quarter operating profit, excluding one-offs. Instead, the software provider delivered $56.9 million, or 14.7% of revenue, up 0.2 percentage points from a year ago. New finance chief Erica Smith raised the full-year operating profit outlook by $19.5 million at the middle of the range, to between $233 million and $236 million.
Tighter control over overhead and sales costs drove the beat. Excluding one-offs, selling and marketing expense fell 1.8 percentage points of revenue from a year ago to 30.2%, and general and administrative overhead dropped 1.3 percentage points to 10.2%. Those savings paid for a 1.5-point rise in research and development spending, to 19.7% of revenue, and a 1.4-point drop in gross margin.
What to watch: fourth-quarter operating margin, excluding one-offs, which the outlook sets at 16.1% at the middle of the range. Holding that level during the heavy holiday text-messaging season would show that overhead savings can offset lower-margin messaging volumes.
Enterprise Deals and Multi-Product Adoption Keep Expanding
Klaviyo is signing larger retail brands and selling them more software tools beyond email marketing. Smith pointed to "more customers landing with multiple products from day one" as the company added Frasers Group and Malbon Golf during the quarter. Overseas sales also continued to outpace the domestic business.
- Customers paying over $50,000 a year: 4,725, up 33% from a year ago
- Customers paying over $250,000 a year: 390, up 49% from a year ago
- Customers paying over $500,000 a year: 105, up 57% from a year ago
- Annual recurring revenue from customers using three or more products: 22%, up from 20% last quarter
- Revenue outside the Americas: up 32% from a year ago, compared with 35% growth last quarter
What to watch: the number of customers spending over $250,000 and $500,000 a year in the fourth quarter. Continued growth near 50% in these newly disclosed tiers would show that large enterprise wins can help offset slower growth among smaller merchants.
Gross Margin Rebounded From Last Quarter
Growing use of text messaging and WhatsApp has weighed on Klaviyo's gross margin for over a year because telecommunications carriers charge fees to deliver those messages. Starting in the third quarter, the software company stopped absorbing those carrier fees and passed them through to customers. Gross margin, excluding one-offs, rose 1.5 percentage points from the second quarter to 74.9%, though it remained 1.4 percentage points below last year's 76.3%.
One quarter of sequential improvement eases the margin pressure, but it does not settle the concern. The fourth quarter brings peak holiday shopping, when brands send their highest volume of low-margin text messages.
What to watch: fourth-quarter gross margin, excluding one-offs. Last year the holiday mix pushed thefourth-quarter figure down to 72.8%, so holding above that mark would prove the fee pass-through protects profitability during peak volume.
🐻 Bear Case
Revenue Growth Has Slowed Every Quarter for a Year
Klaviyo's top-line growth has stepped down in every quarter over the past year, falling from 32.2% a year ago to 24.6% in the third quarter. For the fourth quarter, management's outlook of $421 million to $425 million points to 20.8% growth at the middle of the range. Even though third-quarter sales beat the company's prior plan by 2.2%, that beat was smaller than its 3.2% four-quarter average.
Both existing customer expansion and new customer additions are cooling. Dollar-based net revenue retention (NRR), which measures how much existing customers spend compared with a year ago, slipped one percentage point from last quarter to 108%, even as the company called it "driven by customer expansions, cross-sell and strong retention". By our math, the remaining growth from new customers narrowed to 16.6 percentage points, down from 23.2 points a year ago.
What to watch: fourth-quarter NRR and the first full-year 2027 revenue outlook next quarter. Another drop in NRR alongside a 2027 plan below 20% would confirm that enterprise wins are not large enough to stop the broader slowdown.
Customers Can Now Use Klaviyo Data Inside Rival AI Tools
"AI is taking barriers out of marketing, and as agents take on more of the work, they are only as good as the context behind them," co-chief executive Andrew Bialecki said. Klaviyo wants its own automated tools, Composer for marketing campaigns and Customer Agent for support, to drive its next wave of growth, and launched embedded apps "bringing Klaviyo and Composer directly into the merchant experience" on Shopify and Wix.
Yet in the same release, the company announced Klaviyo Headless, a tool "giving customers optionality to access Klaviyo data from any AI system, including Claude and ChatGPT". Letting merchants run their campaigns through outside chat assistants makes Klaviyo's database useful, but it reduces the need for customers to pay extra for Klaviyo's own AI agents. For a fourth straight quarter, the release gave no revenue or contract value for Composer or Customer Agent.
What to watch: any disclosed revenue or customer spending figure for Composer and Customer Agent on the fourth-quarter call. Continued silence would indicate that AI features are keeping customers on the database rather than bringing in new money.
Risks this quarter didn't answer
Several standing operational and financial concerns received partial updates or await the full quarterly filing.
- Executive turnover and acquisitions: Erica Smith reported her first quarter as finance chief, and Klaviyo spent $15.3 million in cash to buy intangible assets after agreeing to acquire AI startup Agency for its product chief; how quickly the new team settles in will show in 2027 execution.
- Shopify partnership costs: Klaviyo recorded another $13.2 million in quarterly marketing amortization from warrants given to e-commerce partner Shopify; the quarterly filing will show the latest revenue-share fees.
- Service provider commitments: the press release does not update the $816.6 million of non-cancellable purchase commitments; the quarterly filing's footnote will show the remaining balance against the $706.2 million cash position.
👓 Other Themes
Klaviyo Added $300 Million to Its Share Buyback Plan
Klaviyo spent $150.9 million on share repurchases in the third quarter, bringing its nine-month total to $484.4 million and shrinking its cash balance from $1.07 billion at year-end to $706.2 million. After finishing its initial $500 million buyback plan in October, the board approved a new $300 million authorization, which Smith said reflects management's confidence "in the strength of our strategy and intrinsic value of our shares at current levels".
💲 Other KPIs
Deferred revenue — cash customers have paid for service not yet delivered — rose 43.1% from a year ago to $125.8 million, adding $6.3 million during the third quarter. That outpaced the 24.6% rise in reported sales for a second straight quarter as larger enterprise customers signed longer contracts.
Weighted-average diluted shares used to calculate profit per share, excluding one-offs, fell 6.6% from a year ago and 3.9% from the second quarter. Heavy share buybacks more than offset $42.1 million of quarterly employee stock compensation, lifting per-share profit growth 10 percentage points above net profit growth.
Reported free cash flow dropped 47.3% from a year ago to $24.8 million because the software maker paid $15.3 million in cash to acquire intangible assets and paid down $18.0 million of accounts payable. Excluding that asset purchase, adjusted free cash flow was $40.1 million, or 10.4% of revenue, down from $47.1 million a year earlier.
🔮 Guidance
Raised. The middle of the full-year range moved up $9 million to $1.539 billion, or 24.7% growth from a year ago. It is the third straight quarterly raise this year, though each increase has been slightly smaller than the last: +$13 million, +$12 million, and now +$9 million.
New. The fourth-quarter plan calls for 20.8% growth from a year ago at the middle of the range, down from 24.6% in the third quarter as the business laps last year's 29.6% holiday growth. Klaviyo has beaten its quarterly sales midpoint by an average of 3.2% over the past four quarters; if the pattern holds, fourth-quarter sales would grow 24.7% by our math.
Raised. Management lifted the middle of its full-year profit target by $19.5 million to $234.5 million, or 15.2% of projected revenue. That more than reverses last quarter's $10 million cut, which the company had made to absorb costs from acquiring Agency.
New. The outlook points to $68.0 million at the middle of the range, up 33.4% from a year ago and 19.4% from the third quarter. That implies a 16.1% operating margin in the fourth quarter, compared with 14.6% in the same period last year.
New. The company expects weighted-average diluted shares to drop by another 2.5 million from the third quarter's 286.5 million as buybacks continue under the new $300 million authorization. Full-year diluted shares remain projected at 293 million.
❓ Key Questions
How much revenue do Composer and Customer Agent generate?
Management highlights agent adoption every quarter and now allows outside AI tools like ChatGPT and Claude to pull Klaviyo data directly. Without a dollar revenue figure or per-resolution price, investors cannot tell whether AI agents are bringing in new money or only defending existing subscriptions.
Why did net revenue retention slip to 108%?
Existing customer retention fell a point from 109% last quarter even though multi-product adoption rose to 22% of recurring revenue and enterprise customer counts grew over 30%. We want to know whether smaller merchants are cutting spending or if passing through text-messaging fees slowed expansion.
What drove the 1.5-point quarterly jump in gross margin?
Gross margin, excluding one-offs, rose from 73.4% in the second quarter to 74.9% in the third, when mobile fee pass-throughs began. Management previously said that repricing would be neutral to 2026 margins, so we want to know how much came from repricing versus product mix.
What is the maturity schedule for the $816.6M purchase commitments?
Share buybacks and asset purchases have reduced Klaviyo's cash balance by $359.4 million this year to $706.2 million, and the board just approved another $300 million of repurchases. Knowing how much of the service-provider obligations come due each year matters for judging remaining cash flexibility.