Avalara VS Thomson Reuters ONESOURCE
As of 4 November 2026, Thomson Reuters ONESOURCE is named by 344 companies and Avalara by 322; Avalara skews to companies under 200 people (30% vs 9%), Thomson Reuters ONESOURCE to companies over 1,000 (76% vs 37%).
As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
The website-and-DNS footprint is not comparable between a marketing suite and a CRM: Avalara's script and mail records show on hundreds of thousands of small sites, Thomson Reuters ONESOURCE rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- Avalara: 2–200 employees
- 30%
- Thomson Reuters ONESOURCE: 2–200 employees
- 9%
- Avalara: 1,000+ employees
- 37%
- Thomson Reuters ONESOURCE: 1,000+ employees
- 76%
- Postings per company, 90 days
- 1.5 · 3.2
- Website or DNS footprint
- 0 · 0
Who chooses which
Share of each tool's companies in every segment. "Leans" marks a gap of more than two points.
| Segment | Avalara | share | Thomson Reuters ONESOURCE | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 5 | 2% | 3 | 1% | even |
| 2-10 employees | 12 | 4% | 4 | 1% | Avalara |
| 11-50 employees | 23 | 7% | 5 | 1% | Avalara |
| 51-200 employees | 61 | 19% | 23 | 7% | Avalara |
| 201-500 employees | 54 | 17% | 26 | 8% | Avalara |
| 501-1000 employees | 49 | 15% | 23 | 7% | Avalara |
| 1001-5000 employees | 75 | 23% | 101 | 29% | Thomson Reuters ONESOURCE |
| 5001-10000 employees | 13 | 4% | 47 | 14% | Thomson Reuters ONESOURCE |
| 10,001+ employees | 30 | 9% | 112 | 33% | Thomson Reuters ONESOURCE |
| Segment | Avalara | share | Thomson Reuters ONESOURCE | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 112 | 35% | 29 | 8% | Avalara |
| Manufacturing & industry | 56 | 17% | 96 | 28% | Thomson Reuters ONESOURCE |
| Business & finance services | 49 | 15% | 88 | 26% | Thomson Reuters ONESOURCE |
| Commerce & trade | 35 | 11% | 18 | 5% | Avalara |
| Media & content | 13 | 4% | 9 | 3% | even |
| Property & construction | 13 | 4% | 11 | 3% | even |
| Utilities & infrastructure | 12 | 4% | 29 | 8% | Thomson Reuters ONESOURCE |
| Automotive | 8 | 2% | 15 | 4% | even |
| Hospitality & travel | 7 | 2% | 6 | 2% | even |
| Consumer services & leisure | 5 | 2% | 8 | 2% | even |
| Transport, logistics & rental | 5 | 2% | 7 | 2% | even |
| Health care | 4 | 1% | 22 | 6% | Thomson Reuters ONESOURCE |
| Segment | Avalara | share | Thomson Reuters ONESOURCE | share | Leans |
|---|---|---|---|---|---|
| United States | 261 | 81% | 271 | 79% | Avalara |
| United Kingdom | 14 | 4% | 20 | 6% | even |
| Canada | 9 | 3% | 9 | 3% | even |
| Brazil | 4 | 1% | 2 | 1% | even |
| Australia | 3 | 1% | 6 | 2% | even |
| Sweden | 3 | 1% | 2 | 1% | even |
| Switzerland | 2 | 1% | – | – | outside top 12 |
| Colombia | 2 | 1% | 1 | 0% | even |
| Germany | 2 | 1% | 2 | 1% | even |
| France | 2 | 1% | 2 | 1% | even |
| Lithuania | 2 | 1% | – | – | outside top 12 |
| Israel | 1 | 0% | – | – | outside top 12 |
| Spain | – | – | 2 | 1% | outside top 12 |
| Czechia | – | – | 1 | 0% | outside top 12 |
| HK | – | – | 1 | 0% | outside top 12 |
| Segment | Avalara | share | Thomson Reuters ONESOURCE | share | Leans |
|---|---|---|---|---|---|
| Finance & accounting | 356 | 61% | 600 | 45% | Avalara |
| IT operations & business systems | 91 | 15% | 65 | 5% | Avalara |
| Software engineering | 29 | 5% | 22 | 2% | Avalara |
| Product, program & project management | 26 | 4% | 61 | 5% | even |
| Sales | 13 | 2% | 46 | 3% | even |
| Data & AI | 6 | 1% | 15 | 1% | even |
| General management & consulting | 6 | 1% | 8 | 1% | even |
| Administration & office | 5 | 1% | 21 | 2% | even |
| Customer service & success | 3 | 1% | 17 | 1% | even |
| Human resources | 2 | 0% | 4 | 0% | even |
| Legal, compliance & risk | 2 | 0% | 24 | 2% | even |
| Marketing & communications | 2 | 0% | 7 | 1% | even |
| Unclassified | 2 | 0% | – | – | outside top 12 |
| Business development & strategy | 1 | 0% | 6 | 0% | even |
| Design & UX | 1 | 0% | – | – | outside top 12 |
| Logistics warehouse and transport | 1 | 0% | 14 | 1% | even |
| Social care and community | – | – | 60 | 5% | outside top 12 |
| Healthcare support and caregiving | – | – | 39 | 3% | outside top 12 |
| Engineering (non-software) | – | – | 24 | 2% | outside top 12 |
| Education & training | – | – | 23 | 2% | outside top 12 |
| Quality, safety & environment | – | – | 21 | 2% | outside top 12 |
| Skilled trades and field service | – | – | 19 | 1% | outside top 12 |
| Research and science | – | – | 10 | 1% | outside top 12 |
| Procurement and purchasing | – | – | 7 | 1% | outside top 12 |
| Arts media and entertainment | – | – | 3 | 0% | outside top 12 |
| Facilities cleaning and security | – | – | 3 | 0% | outside top 12 |
| Manufacturing and production | – | – | 3 | 0% | outside top 12 |
| Hospitality and food service | – | – | 2 | 0% | outside top 12 |
| Healthcare clinical | – | – | 1 | 0% | outside top 12 |
The companies behind each column
Companies using Avalara →
Companies using Thomson Reuters ONESOURCE →
tax audit tools ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
Thomson Reuters ONESOURCE is named by 344 companies in job postings and Avalara by 322; 55 name both. (Breaknorm, 4 November 2026, https://breaknorm.co/compare/avalara-vs-thomson-reuters-onesource)
Read from the source, not self-reported
Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →
- Job postingsRead hourly from career sites. A tool counts when the employer's own text names it as the team's system; both tools can count for one company.
- Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
- SegmentsCountry, size and industry from the company profile built from its website.
- Not a reviewNo ratings, prices or feature claims. For those, read the vendors.
Avalara vs Thomson Reuters ONESOURCE: questions
Which is more used, Avalara or Thomson Reuters ONESOURCE?
By companies naming it in their own job postings, Thomson Reuters ONESOURCE (344) over Avalara (322). By website-and-DNS footprint, Thomson Reuters ONESOURCE (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses Avalara?
30% of Avalara companies have 2 to 200 employees, against 9% for Thomson Reuters ONESOURCE. 37% of Avalara companies have over 1,000 employees, against 76% for Thomson Reuters ONESOURCE.
Do companies run both?
55 companies name both in their postings, usually Avalara in marketing and Thomson Reuters ONESOURCE in sales, or during a migration.
Where do these numbers come from?
From the employer's own text in job postings read hourly from career sites, and from scripts found on company websites in our crawl. No vendor data, no surveys.
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