Vertex O Series - The Go-To Sales Tax Solution
March 27, 2026

Vertex O Series - The Go-To Sales Tax Solution

Anonymous | TrustRadius Reviewer
Score 9 out of 10
Vetted Review
Verified User

Software Version

Vertex Indirect Tax O Series

Overall Satisfaction with Vertex

Currently, our O Series instance supports sales transactions for US sales tax only. A new phase in 2026-2027 will extend to purchase transactions and will add Canadian VAT.

Pros

  • Customer support
  • Product differentiation
  • Leading the market

Cons

  • Certificate Center partitioning (PRD vs. DEV) was a bit challenging from the Vertex administration side
  • The reporting features, while intuitive, can be clunky especially when rolling up line level vs. header (gross) level figures.
  • Investigate whether any existing products - specifically the Commerce Tools integration - need a full evaluation of continued technical effectiveness.
  • Bringing a new business segment onto our existing O Series instance will save that segment ~ $150K in comparison to licensing costs with an alternative provider.
Our scenarios are not complex per say, but cyclically (particularly at the beginning of income tax filing season), we have a need for a high volume which O Series can fully support. We will scale even more volume going into the end of the school year next year, and I have no concern about the ability to handle large quantities of transactions accurately.
We are adding a new business segment that sells outside of our traditional markets, specifically more B:C than B:B facing. We will have a need for non-traditional items such as specific item exemptions, sales tax holidays, and will need to make use of less-often utilized configuration options.
The user interface is above average but not perfect. I can easily get what I need done, on a routine repetitive basis, so I have no large concerns.

Do you think Vertex delivers good value for the price?

Yes

Are you happy with Vertex's feature set?

Yes

Did Vertex live up to sales and marketing promises?

Yes

Did implementation of Vertex go as expected?

Yes

Would you buy Vertex again?

Yes

Vertex is well-connected with all of its marketplace partners. I've had specific experience getting issues resolved with resources from Microsoft, Grant Thornton, and Vertex all on the same call.

Vertex Feature Ratings

Sales and Use Taxes
8
Geolocation for Tax Assessment
9
3rd-Party Software Integrations
8
Tax Data Reporting
9
Tax Exemption Processing
9

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