Klaviyo, Inc. earnings

Klaviyo reported second quarter fiscal 2026 revenue of $370.6 million, up 26.4% from the prior-year quarter. The company raised its full-year fiscal 2026 revenue guidance to $1.526 billion to $1.534 billion, which implies 24% growth.

Klaviyo's first quarter of fiscal 2026 showed sharp top-line growth and a swing to GAAP profitability. Revenue reached $358.0 million, up 27.9% from the prior-year quarter. Gross profit was $268.9 million, up 26.8%. Operating income was $1.7 million, up from an operating loss in the prior-year quarter.

Klaviyo closed fiscal 2025 with fourth quarter revenue of $350.2 million, up 29.6% from $270.2 million in the prior year quarter. Full year revenue reached $1.23 billion, up 31.6% from $937.5 million. Gross profit was $252.8 million in the quarter, up 27.4%, and $921.5 million for the year, up 28.7%.

Klaviyo closed the September 2025 quarter with revenue of $310.9 million, up 32.2% from the prior-year quarter. Year-to-date revenue reached $883.8 million, up 32.4%.

Klaviyo's second quarter revenue rose 31.9% to $293.1 million. Year-to-date revenue increased 32.6% to $572.9 million. The customer base grew to over 176,000 as of June 30, 2025, up from over 151,000 a year earlier. Large customers generating more than $50,000 of ARR reached 3,291, up 38% year over year from 2,386.

Klaviyo reported first-quarter fiscal 2025 revenue of $279.8 million, up 33.3% from the prior-year quarter. Gross profit rose 28.5% to $212.1 million. Gross margin was 75.8%, down 2.8 percentage points.

Klaviyo closed fiscal 2024 with fourth quarter revenue of $270.2 million, up 34.0% from the prior-year quarter. Full year revenue reached $937.5 million, up 34.3%. Gross profit was $198.4 million in the quarter, up 26.7%, and $716.2 million for the full year, up 37.7%.

Klaviyo reported third quarter fiscal 2024 revenue of $235.1 million, up 33.7% year over year. Gross profit was $180.7 million, up 54.5%, and gross margin was 76.9%, up 10.3 percentage points. The company still posted an operating loss of $13.3 million, with the loss narrowing by $288.9 million.

Klaviyo's second quarter of fiscal 2024 delivered strong revenue growth but a sharp swing to GAAP operating and net losses. Revenue was $222.2 million, up 35.0% from the prior-year quarter. Gross profit was $171.9 million, up 35.3%, and gross margin was 77.4%, up 0.1 percentage points.

Klaviyo reported first quarter fiscal 2024 revenue of $210.0 million, up 34.5% from the prior-year quarter. Gross profit rose 38.1% to $165.1 million, and gross margin improved to 78.6% from 76.6%. The bottom line moved the other way.

Klaviyo closed fiscal 2023 with fourth-quarter revenue of $201.6 million, up 38.8% year over year. Full-year revenue reached $698.1 million, up 47.7%. Gross profit was $156.6 million in the quarter, up 45.1%, and $520.2 million for the year, up 50.9%.

Klaviyo's first quarterly report as a public company showed rapid top-line growth and a large GAAP loss tied to IPO-related stock compensation. Revenue rose 47.5% year over year to $175.8 million in the third quarter. Gross profit increased 35.2% to $117.0 million. Gross margin fell 6.1 percentage points to 66.5%.