TWLO · Research
Twilio's margin turned in Q3, but organic growth is fading toward 11%
Twilio's third quarter fixed two of the things we were tracking: gross margin rose to 48.77% from 48.42%, and stock pay fell under 10% of revenue. The problem moved to the top line.
Spreadsheet & IC Deliverables: Download the formula-linked TWLO 5-tab Excel (.xlsx) workbook and printable 1-page tearsheet.
Download TWLO .xlsx →1. Summary
This piece answers one question: did Twilio's Q3 print confirm that its carrier toll can grow while keeping more of each dollar, or did it break the thesis? You'll learn what Twilio actually sells and how each product line earns money, how the carrier costs, people and buybacks behind the numbers are running, what changed against the four lines we set before the print (revenue growth versus 22%, net expansion versus 116%, gross margin versus 48.42%, and the tax rate), how the valuation moves, and why the call is Hold off, conviction 3 of 5.
Revenue was $1,560M, up 20% from $1,300M, and down from 22% growth in Q2. Organic growth, which strips out acquisitions and carrier pass-through fees, was 16% [1][2].
The Q4 guide is $1,595M to $1,605M, 17% to 17.5% reported and only 11% to 12% organic [1].
Net expansion was 114%, down from 116% in Q2 but up from 109% a year ago [1][2].
Gross margin rose to 48.77% from 48.42%, our calculation, and stock pay fell to 9.9% of revenue from 12.2% a year ago [1][2].
The tax line was a $22.0M benefit on $139.1M of pre-tax income. The Q3 10-Q says it came mainly from excess tax benefits on stock awards, which now count because of the Q2 valuation allowance release, so the normal tax charge we expected has not arrived yet
2. Thesis
Twilio owns the connection between software and the phone networks, and it charges per message and per minute. Every superintelligence agent that has to text or call a customer needs a carrier route, so agent volume pays a toll through Twilio [2].
| Gate test | Read after Q3 |
|---|---|
| Owns the record | Partly, through Segment customer data; most revenue is still the pipe [2] |
| Owns the connection | Yes. Carrier routes for messaging and voice are the core product [2] |
| Outcome pricing | Mostly. Usage pricing per message and minute [2] |
| R&D on the gate | Partly. R&D was $280.4M, up 6.9% while revenue grew 20%, and fell to 17.98% of revenue from 20.17%, our calculation. The release does not split spend between the carrier connection and newer features such as memory and orchestration [1] |
Position view: a quality gate at a full price. Two of four tests pass and two are partial, so the gate is mixed.
Adding the fourth test, not the quarter, is what moves the call: R&D is shrinking as a share of revenue and the release gives no evidence that it goes to the connection rather than features [1].
The four lines we set before the print, checked against Q3.
| Line | Q2 | Q3 | Read |
|---|---|---|---|
| Revenue growth | 22% | 20% (16% organic) | Weaker. Q4 guide is 11% to 12% organic [1][2] |
| Net expansion | 116% | 114% | Slightly weaker, far above the 108% break line [1][2] |
| Gross margin | 48.4% | 48.8% | Better, our calculation [1][2] |
| Tax | $991.7M benefit (allowance release) | $22.0M benefit on $139.1M pre-tax | Still no normal tax charge; the 10-Q ties it to excess stock-award tax benefits [1][2][5] |
What invalidates it, unchanged: net expansion falls back toward 108%, gross margin slides back below 48.42% as carrier fees rise, or stock pay stops falling as a share of revenue [1]
Product: what Twilio sells and how each line makes money
Twilio discloses revenue by product group once a year. In fiscal 2025, Messaging brought in $2,878.3M, 56.8% of the $5,067.2M total, and grew 18.18% [4].
Voice was $615.7M, 12.15% of revenue, up 13.36%. Email was $523.5M, 10.33%, up 7.21%.
Segment was $303.3M, 5.98%, up just 1.87%. Everything else, which the filing calls Other, was $746.5M, 14.73%, up 7.65%, our calculations [4].
RCS and WhatsApp messages were moved into Messaging in 2025, so Messaging now covers SMS, MMS, RCS and chat apps such as WhatsApp [4].
The pricing model follows the product. Messaging is charged per text sent or received and Voice per minute of call time; the filing names both as usage products [2][4].
Email (SendGrid) and Segment are the main subscription products, sold on contracts of typically one to three years and billed in advance [2]. In Q2, 75% of revenue came from usage fees and 25% from subscriptions, against 74% and 26% a year earlier [2]
Operations: how the toll runs
Twilio discloses one operating segment. Its chief executive reviews results on a consolidated basis, so there is no segment profit for Communications or Segment to compare [2].
That makes the cost lines below the best read on how the business runs.
Carrier costs. Cost of revenue is mostly fees paid to network service providers [4]. Software connects to those carriers through what Twilio calls the Super Network, which links carriers and inbox providers worldwide and routes traffic for quality and cost [4].
US carriers have been raising A2P fees, and Twilio passes them through at cost, so they add equal revenue and cost and no gross profit [2]. Those fees added $71.1M of revenue in Q2 and $53.1M in Q3 [1][2].
International messaging carries lower margins than US messaging, so country mix moves margin too [2]. One routing partner is also a holding: Syniverse, an equity method investee, handled $1.3M of transactions with Twilio in Q3, down from $35.6M a year earlier and $45.3M over nine months [5].
Twilio had $1.3B of non-cancelable purchase commitments with cloud, carrier and other vendors as of September 30, down from $1.5B at June 30, and the $32.8M Q2 impairment came from prepaid services at two distressed carriers
3. Valuation
On the Oct 29 regular-session close and 154.73M cover-page shares as of Oct 16 from the Q3 10-Q, market value is about $37.47B. Under our valuation method we count cash and equivalents only, $1,061.5M, against $993.6M of notes, which gives enterprise value of about $37.40B, our calculation [5].
The $1,829.9M of short-term securities is left out by method, which is why this figure differs from our pre-print version, which netted those securities [5].
Trailing 12 month inputs, rolled forward with Q3 in place of Q3 2025, our calculation [1][3][5]:
Revenue of about $5.83B, against enterprise value of about $37.40B.
Free cash flow of about $1.11B, a 19.06% margin.
Stock pay of about $586M, 10.05% of revenue.
Owner free cash flow, free cash flow less stock pay, of about $525M.
The price paid per dollar of owner cash fell because owner cash rose by about a third in one quarter swap, not because the price got cheaper. That is the margin story working.
Five-year view, our calculations. Growth rates, margins and exit values below are our assumptions, not company guidance. We kept the cases unchanged so the move comes only from new inputs.
| Case | Revenue growth per year | FCF margin in year 5 | Stock pay in year 5 | Year 5 revenue | Year 5 owner FCF | Implied EV | vs EV of $37.40B at Oct 29 close |
|---|---|---|---|---|---|---|---|
| Bear | 8% | 20% | 8% | $8.56B | $1.03B | $20.56B | $16.84B below |
| Base | 12% | 22% | 7% | $10.27B | $1.54B | $38.52B | $1.12B above, about even |
| Bull | 16% | 25% | 6% | $12.24B | $2.33B | $69.79B | $32.39B above |
4. Financial update
Growth: reported strong, organic slowing
Revenue was $1,559.5M, up 20% from $1,300.4M a year ago and up about 4% from $1,499M in Q2, our calculation [1][2]. Organic revenue was $1,504.6M, up 16% [1].
The gap is mostly $53.1M of carrier pass-through fees on US business messaging (A2P fees), which Twilio passes to customers at cost, plus $1.8M from acquisitions [1]. Those fees lift reported revenue without adding gross profit.
The guide is where the slowdown shows. Q4 revenue of $1,595M to $1,605M is 17% to 17.5% reported growth but only 11% to 12% organic [1].
Management raised the full year to 20% reported and 15% organic, from 18% to 18.5% and 13% to 13.5% [1]. A raised year with a weaker exit rate means the beat came early in the year and the fourth quarter carries less of it.
Net expansion
Net expansion was 114%, down from 116% in Q2 and up from 109% a year ago [1][2]. Existing customers are still sending more traffic, just a little less fast than last quarter.
That 108% line, where we would call the thesis broken, is six points away.
Gross margin turned
Gross profit was $760.5M, a 48.77% margin, up from 48.42% in Q2, our calculation [1][2]. The year-ago margin was 48.61%, our calculation [1].
Because pass-through fees carry no margin, margin on revenue excluding the $53.1M of A2P fees was about 50.5%, our calculation, assuming those fees sit at cost as the release says [1]. That is the first quarter in our tracking where the carrier squeeze reversed, and it's the single most important line for the thesis.
Operating profit and the tax line
Operating profit was $148.6M, up from $40.9M a year ago and $84.5M in Q2, a 9.53% margin, our calculation [1][2]. Operating costs grew about 3.5% while revenue grew 20%, our calculation [1].
There was no new prepaid carrier impairment: the nine-month impairment loss on prepaid assets is $32.8M, the same charge booked in Q2 [1][2].
After a $25.5M share of losses from the equity method investment and $16.0M of other income, pre-tax income was $139.1M [1]. The tax line was a $22.0M benefit, a negative rate of about 15.8%, our calculation [1].
In Q2 we wrote that future quarters would book a normal tax charge after the $944.1M allowance release; Q3 did not [2]. The deferred tax asset now stands at $1,059.5M [1].
Net income was $161.2M, or $1.00 per diluted share [1]. The Q3 10-Q gives the cause: the benefit rose $17.5M from a year ago mainly because of excess tax benefits on stock awards, which now hit the tax line because the US federal and state valuation allowance was released in Q2
Cash, stock pay and shares
Q3 operating cash flow was $389.2M and free cash flow was $369.6M, a 24% margin, up from $247.5M a year ago [1]. Stock pay was $153.9M, 9.9% of revenue, down from 12.2% [1].
Twilio bought back $127.2M of stock in Q3 and $448.3M over nine months, with about $700M left on its $2.0B authorization [1].
Buybacks are not shrinking the diluted count. Diluted weighted shares were 161.7M, up from 159.2M a year ago, and the Q4 guide assumes 163M [1].
Basic weighted shares were 154.4M [1]. The Q3 10-Q cover page shows 154.73M Class A shares outstanding as of Oct 16, up from 153.58M on the Q2 cover, and we now use that count [2][5].
The balance sheet is clean: $1,061.5M of cash and $1,829.9M of short-term securities against $993.6M of notes, $500M due 2029 and $500M due 2031, with covenants in compliance [5].
5. Risks
Organic growth slowing. Organic growth was 16% in Q3, and the Q4 guide is 11% to 12% [1]. Reported growth of 17% to 17.5% leans on carrier pass-through fees that add no gross profit [1].
If organic growth settles near 11%, our 12% base case is too generous and the base case value slips under today's enterprise value, our calculation.
Carrier cost control. Carriers set much of the cost of messaging and voice [2]. Gross margin improved to 48.77% in Q3, our calculation, but one quarter is not a trend, and the pass-through fees that carriers raise dilute the reported margin [1].
Stock pay and dilution. Stock pay fell to 9.9% of revenue, but trailing stock pay of about $586M still absorbs about half of free cash flow, our calculation [1][2][3]. Diluted shares rose to 161.7M from 159.2M despite $448.3M of buybacks over nine months, and Q4 assumes 163M [1].
Carrier partner distress. Twilio impaired $32.8M of prepaid network services in Q2 it "will be unable to consume due to operational and financial challenges experienced by two network service providers"
6. Catalysts and conclusion
The Q3 10-Q is now out and changed nothing in the call: it explained the tax benefit and nudged the share count up [5]. The next catalyst is the Q4 print, where we'll test whether organic growth really lands at 11% to 12% or the guide proves cautious.
Beyond that, the catalysts that drive owner cash in every case above are unchanged: gross margin holding near 49% and stock pay falling toward 7% of revenue.
Stock position: Hold off, conviction 3 of 5. The quarter answered the margin question better than we feared: gross margin rose, stock pay fell, operating profit nearly doubled from Q2, and the free cash flow guide went up [1][2]. But the growth question got harder.
Our base case value of $38.52B sits about even with today's $37.40B enterprise value, and with a mixed gate that is Hold off, conviction 3 of 5, our calculation. The trigger is the Q4 print: organic growth beating the 11% to 12% guide while margin holds, or evidence that R&D is going to the carrier connection, would move the call toward Buy.
What it means for the future of software. Superintelligence agents still have to reach people through phones, and the networks those calls and texts run on are physical and regulated. The software that sits on that connection and charges per use earns a toll on agent volume.
Q3 shows the other half of that lesson: a toll gate can widen its take, as Twilio's margin did this quarter, while volume growth from existing customers cools. A gate is worth what it keeps and how fast traffic grows through it, and Twilio is now proving the first while the second slows.
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