Merchant verification for marketplaces

Verify merchants, monitor deals, and stop fraud in real time

Effortlessly grow your business while stopping fraud with identity checks, merchant screening, and transaction monitoring.
330K+
Fraud attempts stopped
every month
240% ROI
Companies achieve with
Sumsub (Forrester TEI™ study)
6-month
Payback with Sumsub
(Forrester TEI™ study)
Stop fraud, protect revenue
Block fraud and financial risks before they hit your bottom line with real-time Transaction Monitoring and advanced detection tools.
Shield your reputation
Safeguard brand trust by ensuring secure, transparent interactions for every user, merchant, and transaction.
Grow without risk
Scale your business with advanced Fraud Prevention that keeps security strong while boosting conversions.
Simplify security
Reduce manual workload while delivering end-to-end fraud protection with an easy-to-integrate automated solution.

Grow your marketplace. Protect every deal

Marketplace safety
Account protection
Transaction security
Chargeback control
Fraud defense
Buyer verification
Verify and reverify every seller to ensure only trusted businesses can trade on your platform.

Get yourself a great deal

Grow safely and save big—Sumsub clients see 240% ROI and faster payback, according to Forrester TEI™.

240%

ROI

3.21m

NPV

4.55M

Benefits PV

< 6

months payback

Easily integrate your tech stack with Sumsub

Use Sumsub to integrate the services you need via Web SDK, Mobile SDK, or our RESTful API. Alternatively, you can use Unilink to onboard users via a QR code or a link to the verification form without integrating Sumsub at all. Don’t worry about interruptions with 99.996% uptime.

Easily integrate your tech stack with Sumsub

But wait, there’s more…
Here's how clients fight fraud with us

  • Sumsub assists us in identifying fraudulent transactions by examining users who fall under the scrutiny of fraud detection. We rely on Sumsub’s efficient verification process and the availability of additional data for our anti-fraud checks to verify the identity of users swiftly.
    Denis Barachevskii
    Denis Barachevskii
    Head of Anti Fraud
  • As transactions occur on our site, we wanted to prevent fraudulent activities and create a safe user environment. With Sumsub, the user verification process has become less time-consuming and more reliable that brought bring peace of mind to our users and ourselves.
    Jonathan Cook
    Jonathan Cook
    Teacher Services Manager
  • Sumsub's solution helped us not to drown in paperwork, and simplify the end-user onboarding and compliance officer routine. To verify each applicant, it now took around 30 seconds instead of 10 minutes. Document processing time was reduced in half with a successful profile completion 99.5% of the time.
    Daniil Petin
    Daniil Petin
    COO
  • ML standards are becoming a significant burden for the company, and Sumsub has proved invaluable in keeping up with the constantly changing rules and regulations.

    Our customer's onboarding has become significantly easier, saving us a significant amount of time in terms of checks and data storage.
    Giandomenico Palermiti
    COO

Choosing your ideal solution?

Sumsub is G2’s Top Pick

Surpass competitors with a partner who knows how to excel, as validated by user reviews.

FAQ

  • What is merchant verification?

    It is the process of verifying the identity and legitimacy of a merchant before they are allowed to begin accepting payments from customers on a marketplace platform. Verification is a crucial part of the merchant onboarding process, as it helps prevent fraud and protect both the payment processor and the customers.

  • How to check if a merchant is legit?

    Marketplaces typically run verification checks, which involve confirming a merchant’s personal and business details, including legal name, business name, address, tax ID, and banking information.

  • What documents are required for merchant KYC checks?

    This usually requires a government-issued ID, proof of address, business registration documents, and banking details. Depending on the marketplace, identity verification may also include shareholder or ownership records to provide a complete view of the business.

  • How does ID verification work for marketplace sellers?

    ID verification for marketplace sellers combines document checks with digital tools that confirm authenticity. This may include biometric screening, cross-checking databases, and merchant phone number verification to make sure the seller can be trusted before they transact.

  • How long does the merchant verification process take?

    It can take anywhere from a few minutes to a couple of days, depending on how automated the process is. Many modern marketplaces use fully automated identity verification systems that instantly validate IDs, documents, and phone numbers.

  • How can marketplaces prevent fraud with merchant verification?

    Marketplaces can prevent fraud by combining upfront checks with ongoing monitoring. Strong merchant verification, backed by merchant KYC, identity checks, and phone number verification, helps block fake sellers, stop money laundering, and protect both buyers and the platform’s reputation.