Is Medius or Vertex better?

Neither clearly leads. Medius starts at On request and Vertex at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Medius or Vertex?

Medius starts at On request and Vertex at On request.

Does Medius or Vertex run on more platforms?

Medius runs on Web, iOS, Android. Vertex runs on web, api.

What is Medius best used for?

Medius is most often used for a mid-market finance team where most spend arrives as an invoice with no purchase order to match against, a group with several legal entities on different erps that wants one ap process across all of them, reducing invoice fraud exposure with automated detection of supplier bank detail changes, replacing a scanning bureau and a shared ap inbox with automated capture and exception-based review. Of those, a mid-market finance team where most spend arrives as an invoice with no purchase order to match against and a group with several legal entities on different erps that wants one ap process across all of them are not what Vertex is typically brought in for.

What can Medius do that Vertex cannot?

Medius covers Invoice capture and coding, Matching and exception handling, Fraud and anomaly detection, Supplier payments. Vertex covers Real-time tax determination, Global e-invoicing compliance, Compliance reporting and filing, Exemption certificate management.

Accounting · head to head

Medius vs Vertex

Medius

Accounting

Accounts payable automation and supplier payments for mid-market finance teams, Marlin Equity owned

From: On request
Rated: -

Full review Website

Vertex

Accounting

Enterprise tax determination, compliance, and e-invoicing software

From: On request
Rated: -

Full review Website

The short version

Each has a real cost: Medius the sourcing, contract and procurement modules are considerably less developed than the AP core, so buying Medius as a full source-to-pay suite means accepting weak upstream tooling.; Vertex pricing is entirely custom and not published, requiring a sales engagement to get a quote.
They diverge on capability: Medius covers Invoice capture and coding, Vertex covers Real-time tax determination.
Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Medius and Vertex actually diverge.

Attributes where Medius and Vertex differ
Attribute	Medius	Vertex
Platforms	Web, iOS, Android	web, api
Founded	Unknown	1978

Identical on both: starting price (On request), pricing model (quote), free tier (No), user rating (Not yet rated), category (Accounting).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Medius

Invoice capture and coding
Matching and exception handling
Fraud and anomaly detection
Supplier payments
Approval workflow
ERP integration

Only in Vertex

Real-time tax determination
Global e-invoicing compliance
Compliance reporting and filing
Exemption certificate management
AI-powered compliance workflows
ERP integrations

What people use each for

The jobs each tool is most often brought in to do.

Medius

A mid-market finance team where most spend arrives as an invoice with no purchase order to match againstnot Vertex
A group with several legal entities on different ERPs that wants one AP process across all of themnot Vertex
Reducing invoice fraud exposure with automated detection of supplier bank detail changesnot Vertex
Replacing a scanning bureau and a shared AP inbox with automated capture and exception-based reviewnot Vertex

Vertex

Automating indirect tax calculation for large multinational enterprisesnot Medius
Managing global e-invoicing compliance mandatesnot Medius
Handling exemption certificates for B2B salesnot Medius
Embedding tax logic directly into ERP and e-commerce checkout flowsnot Medius

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Medius

The sourcing, contract and procurement modules are considerably less developed than the AP core, so buying Medius as a full source-to-pay suite means accepting weak upstream tooling.
Pricing is quote-only and driven by invoice volume, so a business with many low-value invoices pays disproportionately relative to the spend being controlled.
Payments are billed on transaction volume separately from the AP subscription, which is easy to omit from a cost comparison against a licence-only AP tool.
Private equity ownership since 2017 has produced an acquisition-driven product line, so payments and adjacent capability come from bought-in technology rather than the original platform.
ERP integration depth varies sharply by system, and organisations on less common or heavily customised ERPs face integration work that lengthens the implementation.

Vertex

Pricing is entirely custom and not published, requiring a sales engagement to get a quote.
The platform is built for enterprise-scale tax complexity, which can be more than small businesses need.
Implementation typically requires integration work with existing ERP systems, adding setup time and cost.
Documentation on self-serve plan tiers or limits is not publicly available, unlike simpler tax tools.

Pricing, plan by plan

Medius

On request

Medius AP Automation$undefined/year
- Two packaged AP automation tiers
- Priced by invoice volume and entity count
- Sourcing, contracts and procurement modules sold separately

Vertex

On request

Vertex Cloud$undefined/mo
- Custom pricing based on business needs
- Tax determination, e-invoicing, and reporting
- ERP and e-commerce integrations

Which should you pick?

Choose Medius if

You need invoice capture and coding.
You work on Web, iOS, Android.
You also want matching and exception handling.

Medius review

Choose Vertex if

You need real-time tax determination.
You work on web, api.
You also want global e-invoicing compliance.

Vertex review

Questions people ask

Is Medius or Vertex better?: Neither clearly leads. Medius starts at On request and Vertex at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Medius or Vertex?: Medius starts at On request and Vertex at On request.
Does Medius or Vertex run on more platforms?: Medius runs on Web, iOS, Android. Vertex runs on web, api.
What is Medius best used for?: Medius is most often used for a mid-market finance team where most spend arrives as an invoice with no purchase order to match against, a group with several legal entities on different erps that wants one ap process across all of them, reducing invoice fraud exposure with automated detection of supplier bank detail changes, replacing a scanning bureau and a shared ap inbox with automated capture and exception-based review. Of those, a mid-market finance team where most spend arrives as an invoice with no purchase order to match against and a group with several legal entities on different erps that wants one ap process across all of them are not what Vertex is typically brought in for.
What can Medius do that Vertex cannot?: Medius covers Invoice capture and coding, Matching and exception handling, Fraud and anomaly detection, Supplier payments. Vertex covers Real-time tax determination, Global e-invoicing compliance, Compliance reporting and filing, Exemption certificate management.

Answered from the vendors’ own pages

Medius: Is Medius a procurement suite or an AP tool?

Primarily an AP automation platform with procurement modules attached. If sourcing is your main requirement, look elsewhere.

Vertex: Is Vertex's tax software pricing publicly available?

No. Vertex does not publish pricing for its Vertex Cloud or enterprise tax platform; costs are determined through a custom quote based on modules, transaction volume, and deployment scope.

Source

Medius: Who owns Medius?

Marlin Equity Partners, which acquired it in 2017 and has funded several bolt-on acquisitions since.

Vertex: Roughly what do businesses pay for Vertex?

As reported by third-party buyer guides, not Vertex itself, mid-market companies processing 10,000-50,000 monthly transactions often pay in the $40,000-$100,000 per year range including platform and transaction fees.

Source

Medius: How is it priced?

By quote, driven by invoice volume and entity count, with payments billed separately on transaction volume.

Vertex: Who manages Vertex Cloud after it's set up?

With the Vertex Cloud deployment option, ongoing operations such as monitoring, configuration, and state tax correspondence remain the responsibility of the customer's internal team rather than Vertex.

Source

Medius: Does it replace our ERP?

No. It sits alongside the ERP and posts approved invoices into it.

Vertex: What systems does Vertex integrate with?

Vertex integrates with major ERP and e-commerce platforms including SAP, Oracle, Microsoft, Shopify, Workday, and NetSuite to embed real-time indirect tax calculation into existing business systems.

Source

Vertex: How many jurisdictions does Vertex support for tax determination?

Vertex calculates real-time indirect tax rates across 195 countries and more than 20,000 tax jurisdictions worldwide.

Source

Medius vs Vertex

Medius

Vertex

The short version

Where they differ

What each one covers

Only in Medius

Only in Vertex

What people use each for

Medius

Vertex

Where each one falls short

Medius

Vertex

Pricing, plan by plan

Medius

Vertex

Which should you pick?

Choose Medius if

Choose Vertex if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Medius

More on Vertex

Keep looking

Other head to heads