Softwr

Accounting · head to head

Adyen vs Nessus

Adyen logo

Adyen

Accounting

The payments platform built for growth

From
$0.13/per-transaction
Rated
-
Full reviewWebsite
Nessus logo

Nessus

Cybersecurity

The most trusted vulnerability assessment solution

From
$4790/year
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Adyen there is a minimum monthly invoice, set by industry and business model and only disclosed through the sales team, so small volumes are not economic; Nessus nessus Professional is $4,790 for one year, with no free or low cost commercial tier
  • They diverge on capability: Adyen covers Payment processing, Nessus covers Vulnerability scanning.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Adyen and Nessus actually diverge.

Attributes where Adyen and Nessus differ
AttributeAdyenNessus
Starting price$0.13/per-transaction$4790/year
Pricing modelusage-basedsubscription
PlatformsWeb, Api, PosDesktop, Api
CategoryAccountingCybersecurity
Founded20062002

Identical on both: free tier (No), user rating (Not yet rated).

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 Adyen

  • Payment processing
  • Risk management
  • Unified commerce
  • Issuing
  • Platform payments
  • SAP
  • Salesforce
  • Oracle

Only in Nessus

  • Vulnerability scanning
  • Configuration auditing
  • Malware detection
  • Web application scanning
  • Cloud scanning
  • Compliance checks
  • Patch auditing
  • Pre-built policies

What people use each for

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

Adyen

  • Card acquiring with interchange plus pricing for larger merchantsnot Nessus
  • Accepting local payment methods across multiple countriesnot Nessus
  • Settling in several currencies through linked bank accountsnot Nessus
  • Unified online and in-person paymentsnot Nessus

Nessus

  • Vulnerability scanning for individual practitionersnot Adyen
  • Enterprise vulnerability managementnot Adyen
  • Web application security assessmentsnot Adyen

Where each one falls short

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

Adyen

  • There is a minimum monthly invoice, set by industry and business model and only disclosed through the sales team, so small volumes are not economic
  • Published fees are indicative rather than a rate card, with real pricing negotiated
  • Interchange++ means the card cost varies per transaction rather than being a single predictable percentage
  • Alternative payment methods carry their own rates on top, such as 3.3 percent plus $0.10 for American Express in North America

Nessus

  • Nessus Professional is $4,790 for one year, with no free or low cost commercial tier
  • Multi year terms are the only discount route, at $9,330.95 for two years and $13,637.54 for three
  • It is a single user scanner, so team workflows mean migrating to another Tenable product
  • Tenable One vulnerability management is priced separately, starting at $3,500 a year for 100 assets

Pricing, plan by plan

Adyen

$0.13/per-transaction
  • Transaction-Based Pricing$undefined/mo
    • Fixed $0.13 USD per transaction
    • Variable fee determined by payment method
    • No setup fees

Nessus

$4790/year
  • Nessus Professional$4790/year
    • 1 year license
    • Best for individual security professionals
  • Nessus Professional 2-Year$9330.95/2 years
    • 2 year license with discounted rate vs. annual
  • Nessus Professional 3-Year$13637.54/3 years
    • 3 year license with discounted rate vs. annual
  • Nessus Expert$6790/year
    • 1 year license
    • Enhanced capabilities vs. Professional

Which should you pick?

Choose Adyen if

  • You need payment processing.
  • You work on Web, Api, Pos.
  • You also want risk management.
Adyen review

Choose Nessus if

  • You need vulnerability scanning.
  • You work on Desktop, Api.
  • You also want configuration auditing.
Nessus review

Questions people ask

Is Adyen or Nessus better?
Neither clearly leads. Adyen starts at $0.13/per-transaction and Nessus at $4790/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Adyen or Nessus?
Adyen starts at $0.13/per-transaction and Nessus at $4790/year.
Does Adyen or Nessus run on more platforms?
Adyen runs on Web, Api, Pos. Nessus runs on Desktop, Api.
What is Adyen best used for?
Adyen is most often used for card acquiring with interchange plus pricing for larger merchants, accepting local payment methods across multiple countries, settling in several currencies through linked bank accounts, unified online and in-person payments. Of those, card acquiring with interchange plus pricing for larger merchants and accepting local payment methods across multiple countries are not what Nessus is typically brought in for.
What can Adyen do that Nessus cannot?
Adyen covers Payment processing, Risk management, Unified commerce, Issuing. Nessus covers Vulnerability scanning, Configuration auditing, Malware detection, Web application scanning.

Answered from the vendors’ own pages

Adyen: How much does Adyen charge per transaction?

Adyen charges a fixed $0.13 USD per transaction plus a variable fee based on the payment method used. Credit cards typically cost $0.13 + 0.60% + interchange, while digital wallets and BNPL options cost between $0.13 + 0.99% to $0.13 + 4.99%+, depending on the specific method and region.

Source
Nessus: What is the cheapest Nessus option?

Nessus Professional starts at $4,790 per year for a 1-year license. Multi-year commitments offer discounts, with 2-year licenses at $9,330.95 and 3-year licenses at $13,637.54.

Source
Adyen: Does Adyen have monthly subscription or setup fees?

No, Adyen has no setup fees or monthly recurring charges. You pay only for each transaction processed. The transaction fee structure remains the same regardless of transaction volume or business size.

Source
Nessus: What is the difference between Nessus Professional and Expert?

Nessus Expert costs $6,790 per year for a 1-year license (compared to $4,790 for Professional) and includes enhanced capabilities. Multi-year rates are available at discounted prices.

Source
Adyen: What's Adyen's Interchange++ pricing option?

Adyen offers an Interchange++ transparent pricing model that passes interchange and scheme fees directly to merchants instead of bundling them into a percentage rate. This allows visibility into exact costs for each payment method.

Source
Nessus: Does Nessus offer optional support or training?

Yes, Nessus offers add-on services: Advanced Support at $400/year provides 24x365 access to phone, email, community, and chat support. On-Demand Training costs $275/year for Fundamentals course access or $385/year for both Fundamentals and Advanced courses.

Source
Adyen: Can I process payments in multiple currencies with Adyen?

Yes, Adyen supports 100+ payment methods across multiple currencies. You can link multiple bank accounts in different currencies to avoid currency conversion fees on international transactions.

Source
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