The short answer
Fourthline and ComplyAdvantage are both compliance tools. They overlap on KYC and Fraud detection. Neither has a clear edge on the figures we track (entry price, review ratings, integrations, frameworks, customers). Best fit: Fourthline for european banks and neobanks that need KYC, AML and re-KYC from one vendor and ComplyAdvantage for banks and fintechs screening customers and companies against global sanctions, PEP, and adverse-media data. Shortlist on fit, then compare quotes for the same scope.
Which should you choose?
Choose Fourthline if…
- you're among european banks and neobanks that need KYC, AML and re-KYC from one vendor
- you're among neobrokers and crypto platforms onboarding across many EU countries
- you're among teams preparing for the EU AML Regulation in July 2027
- this ComplyAdvantage drawback matters to you: enterprise pricing, implementation scope, and higher-volume terms require a sales conversation
Choose ComplyAdvantage if…
- you're among banks and fintechs screening customers and companies against global sanctions, PEP, and adverse-media data
- you're among payments businesses needing transaction or payment screening with volume-based deployment options
- you're among crypto and digital-asset companies building AML and ongoing-monitoring workflows through APIs
- this Fourthline drawback matters to you: no public pricing, and built for enterprise volumes
At a glance
| Attribute | Fourthline | ComplyAdvantage |
|---|---|---|
| Starting price | Custompricing as of Nov 2026 | From $99/mopricing as of Oct 2026 |
| Pricing model | Enterprise contract, volume-based | Monthly or annual subscription, usage-based and quote-based |
| Free trial | No public free trial is listed; contact sales for a demo. | No public free trial is listed; ComplyAdvantage offers a free ComplyLaunch program for eligible early-stage startups. |
| Founded | 2017 | 2014 |
| Headquarters | Amsterdam, Netherlands | London, United Kingdom |
| Funding | Up to €65M tied to the Veridas merger (November 2026); earlier rounds from Finch Capital | $158M |
| Frameworks | EU AMLD and AMLR, GDPR, eIDAS; ISO/IEC 27001:2022, ISAE 3000 | AML and KYC requirements; sanctions, PEP, RCA, and adverse-media screening |
| Coverage | Locally compliant in 30+ jurisdictions; Europe-first | AML, KYC, sanctions, PEPs, adverse media, transaction monitoring, payment screening, and fraud detection |
| Integrations | REST API, web and mobile SDKs, Postman collections | REST API, batch processing, SFTP, browser platform, and AWS Marketplace |
| Customers | Revolut, N26, Trade Republic, Qonto, Rabobank, Bitpanda | 8,000+ |
| Rating | Not published | 4.3/5 on G2 (81 reviews) |
| Focus | KYC and AML for banks and fintechs | AML and financial crime risk intelligence |
Figures are as published by each vendor or review site on the verification date. "Leads" marks the stronger published figure; it isn't a recommendation on its own.
Where each one leads
Neither tool has a clear edge on the figures we can compare directly (entry price, review rating, integrations, frameworks, customers, free trial).
Pricing compared
Fourthline pricing
Custom · pricing as of Nov 2026
Plan-level pricing not published.
Fourthline does not publish pricing. It licenses its platform to regulated institutions based on verification volume and the modules selected.
Free trial: No public free trial is listed; contact sales for a demo.
ComplyAdvantage pricing
From $99/mo · pricing as of Oct 2026
- Starter EssentialsFrom $99/mo annually
Self-service plan for up to 2,000 monitored entities
Customer and company screening, sanctions and watchlists, PEPs and RCAs, adverse media, ongoing monitoring, API access
- Starter AgenticFrom $149/mo annually
Adds agentic alert-resolution capabilities
Everything in Essentials plus agentic workflows that autonomously resolve approximately 85% of routine alerts
- EnterpriseCustom
Quote-based
Full compliance platform, premium support, unlimited usage, agentic workflows, transaction monitoring, and payments screening
Starter Essentials starts at $99 per month with annual billing for up to 100 monitored entities, while monthly billing for that allowance is $119. Agentic Starter begins at $149 per month with annual billing, and Enterprise is quote-based. AWS Marketplace benchmarks include $30,000 per year for 30,000 payment-screening transactions and $65,000 per year for 50,000 sanctions, PEP, and adverse-media screening units; Vendr reports a $52,900 median annual buyer contract.
Free trial: No public free trial is listed; ComplyAdvantage offers a free ComplyLaunch program for eligible early-stage startups.
Key capabilities
Fourthline
- Identity verification. Document and biometric checks with liveness and NFC chip reading, covering 3,500+ document types.
- AML screening and monitoring. Sanctions, PEP and adverse media screening at onboarding and on an ongoing basis.
- Re-KYC and remediation. Refreshes customer files for existing books of clients, including periodic and event-driven reviews.
- Fraud detection. Flags synthetic identities, document tampering and other onboarding fraud signals.
- Qualified electronic signatures. QES issued through Fourthline's Swedish subsidiary, a qualified trust service provider since August 2026.
- Digital proof of address. Verifies a customer's address digitally as part of onboarding.
- Investigations and case review. CDD reporting and a case review portal for analysts working alerts and escalations.
ComplyAdvantage
- Customer screening. Screens individuals and businesses against sanctions, watchlists, PEPs, RCAs, and adverse media.
- Ongoing monitoring. Continuously monitors screened customers and companies for newly identified financial-crime risk.
- Transaction monitoring. Analyzes transactions with configurable rules, alerts, and investigation workflows.
- Payments screening. Screens payment parties, institutions, BIC codes, and reference text against sanctions and PEP data.
- Adverse media. Uses adverse-media intelligence to identify negative news relevant to customer and entity risk.
- Fraud detection. Provides machine-learning models and an out-of-the-box rules library covering more than 50 payment-fraud scenarios.
- API and data delivery. Supports real-time APIs, batch processing, SFTP, and browser access for integration into existing workflows.
Pros and cons
Fourthline
Pros
- Covers KYC, AML screening, re-KYC and fraud in one platform
- Strong roster of European fintech and bank customers
- ISO 27001 and ISAE 3000, with EU data processing
- Veridas merger adds in-house face and voice biometrics
Cons
- No public pricing, and built for enterprise volumes
- Focused on financial services, not other verticals
- Platform integration with Veridas is still in progress
- Most coverage is in Europe
ComplyAdvantage
Pros
- Combines sanctions, PEP, adverse-media, customer, company, payment, and transaction screening in one platform.
- Offers self-service Starter pricing alongside enterprise-scale APIs, monitoring, and workflow capabilities.
- Supports real-time API, batch, SFTP, and browser-based deployment patterns.
- Its data platform includes fraud scenarios, machine-learning models, and continuously refreshed sanctions intelligence.
Cons
- Enterprise pricing, implementation scope, and higher-volume terms require a sales conversation.
- Match review and false-positive handling still require investigators rather than fully automated decisions.
- The broad feature set separates important transaction, payments, and agentic capabilities into higher tiers.
- AWS Marketplace benchmarks show that larger screening commitments can reach tens of thousands of dollars annually.
How they're similar
- Both are listed in our compliance directory.
- Both list KYC and Fraud detection.
- Both highlight integrations with REST API.
- Both offer fraud detection.
How they differ
- Focus
- Fourthline: KYC and AML for banks and fintechs
- ComplyAdvantage: AML and financial crime risk intelligence
- Pricing model
- Fourthline: Enterprise contract, volume-based
- ComplyAdvantage: Monthly or annual subscription, usage-based and quote-based
- Starting price
- Fourthline: Custom
- ComplyAdvantage: From $99/mo
- Founded
- Fourthline: 2017
- ComplyAdvantage: 2014
- Headquarters
- Fourthline: Amsterdam, Netherlands
- ComplyAdvantage: London, United Kingdom
- Funding
- Fourthline: Up to €65M tied to the Veridas merger (November 2026); earlier rounds from Finch Capital
- ComplyAdvantage: $158M
- Listed only for this tool
- Fourthline: AML screening, Re-KYC, Identity verification, Qualified electronic signature, Banks, Neobanks
- ComplyAdvantage: AML, Sanctions screening, PEP screening, Adverse media, Transaction monitoring, Payment screening +4 more
Frequently asked questions
Is Fourthline cheaper than ComplyAdvantage?
+
The published prices can't be compared directly (they are quote-based, use different billing units, or aren't published), so request quotes for the same scope. Fourthline: Custom (enterprise contract, volume-based). ComplyAdvantage: From $99/mo (monthly or annual subscription, usage-based and quote-based). (Fourthline pricing pricing as of Nov 2026; ComplyAdvantage pricing pricing as of Oct 2026.) Total cost depends on plan, company size and add-ons.
Which is better for startups, Fourthline or ComplyAdvantage?
+
Fourthline's published positioning doesn't single out startups; its first best-fit group is "European banks and neobanks that need KYC, AML and re-KYC from one vendor". ComplyAdvantage's published positioning doesn't single out startups; its first best-fit group is "Banks and fintechs screening customers and companies against global sanctions, PEP, and adverse-media data". Neither answer replaces a quote for your headcount and scope.
Can I switch from Fourthline to ComplyAdvantage?
+
Yes. They are separate products, so switching means setting up ComplyAdvantage and reconnecting your systems. Both list integrations with REST API, so those connections are available on either side. Check your Fourthline contract term and renewal date before you commit. Data migration tooling isn't covered in our sources, so ask ComplyAdvantage whether it can import your Fourthline data.
Does Fourthline or ComplyAdvantage have more integrations?
+
Fourthline: REST API, web and mobile SDKs, Postman collections; ComplyAdvantage: REST API, batch processing, SFTP, browser platform, and AWS Marketplace. Vendor counts are self-reported and define "integration" differently, so check that the specific systems you use are supported.
How do Fourthline and ComplyAdvantage reviews compare?
+
Fourthline: no rating in our data; ComplyAdvantage scores 4.3/5 from 81 reviews on G2. Ratings are third-party review-site data, not our own testing.
Do Fourthline and ComplyAdvantage offer a free trial?
+
Fourthline: No public free trial is listed; contact sales for a demo. ComplyAdvantage: No public free trial is listed; ComplyAdvantage offers a free ComplyLaunch program for eligible early-stage startups.
Go deeper
Fourthline
Compliance
ComplyAdvantage
Compliance
Sources
Vendors change pricing and features often, so confirm with each vendor before buying. How we research
Fourthline
Last verified
ComplyAdvantage
Last verified
- ComplyAdvantage pricing
- ComplyAdvantage Starter Plan pricing
- ComplyAdvantage Mesh security and platform
- ComplyAdvantage security and privacy
- ComplyAdvantage acquisition of Golden
- G2 ComplyAdvantage reviews
- AWS Marketplace customer screening
- AWS Marketplace payment screening
- Vendr ComplyAdvantage pricing benchmark
Work at one of these companies or spot something out of date? Suggest a correction. We check every report against a public source and update the page, usually within a few days.