Merchant onboarding process: A step-by-step guide with best practices
Harry Musson
KYB Specialist
For marketplaces or payment processors, a slow or complicated merchant onboarding process creates friction that can drive merchants away. Every extra form field or document request increases the risk of drop-off and lost revenue, putting further pressure on already tight margins.
At the same time, KYB (Know Your Business) can’t simply be faster – it also needs to meet strict compliance requirements. That challenge becomes even more complex when you’re onboarding smaller or newly formed merchants, where limited or inconsistent data forces longer journeys and more manual intervention.
We wrote this article to help you strike the right balance between speed and compliance, with practical strategies to optimize onboarding while maintaining the controls you need. In it, we’ll cover:
- Merchant onboarding process: Step-by-step
- How to improve your merchant onboarding process
- How GBG Detected helps businesses onboard merchants quickly and efficiently
Ready to improve your merchant onboarding process? Book a demo to learn how GBG Detected, our end-to-end KYB solution, can help.
Merchant onboarding process: Step-by-step
Merchant onboarding is the process of verifying and setting up a business – such as a retailer, if you’re a marketplace – to enable it to accept customer payments securely. This is what typical vendor onboarding looks like:
- Collect data: This includes essential business information and documentation from the new merchant, such as registration documents, tax identification numbers, financial statements, and licences.
- Perform KYB verification: Verify company existence by checking official business registries and other trusted data sources to validate key details like incorporation status and whether the business is actively operating.
You’re also required to identify the company’s directors and ultimate beneficial owners (UBOs). This step ensures transparency into who ultimately owns or controls the business. Even small or newly established merchants must meet these requirements, making director and UBO identification an essential part of the overall KYB verification process.
- Perform KYC (Know Your Customer) verification: Once you’ve identified the company’s directors and UBOs, you must verify their identities using methods like document verification, database checks, and biometrics.
- Assess and score risk: Apply risk scoring based on multiple data points, such as company stability, credit signals, online presence, sanctions and watchlists, and geographic risk indicators.
- Make an onboarding decision: Based on the risk assessment, you can approve, reject, or flag the merchant for further review.
- Perform ongoing monitoring: Continue to monitor merchant activity after onboarding. This may involve integrating transaction monitoring tools to update risk profiles or triggering alerts and automating reviews when risk changes.
How to improve your merchant onboarding process
If you’re rethinking your current merchant onboarding process or building one from scratch, keep the following strategies in mind:
1. Reduce friction for small merchants using broad and deep data
Many small or newly formed businesses may lack credit history, robust financial records, or consistent registry data, but they still represent valuable revenue potential. This is why many companies go on to compensate by requesting more documents and manual checks – which creates friction that can actually push these merchants to abandon onboarding altogether.
To avoid losing smaller merchants during onboarding, you can design processes that account for these gaps rather than penalize them. For instance, you can incorporate alternative signals, such as digital footprint data, behavioral indicators, or verifying owners/directors using KYC data, to build a more complete risk profile without overburdening the merchant.
Partnering with a provider that offers global, deep data coverage strengthens this approach: it ensures you can verify key attributes like business legitimacy and ownership structure across different geographies, entity types, and maturity levels, even when traditional data is sparse.
2. Automate verification and decisioning for faster onboarding
You’re probably familiar with this challenge: manual onboarding processes slow down approvals, increase costs, and make it harder to scale. As volumes grow, operations teams can also become overwhelmed with repetitive checks, leading to more delays..
Automation, on the other hand, transforms merchant onboarding into a real-time process. Business verification, identity checks, and sanctions screening can run instantly in the background, eliminating bottlenecks and reducing back-and-forth with merchants.
With automated decisioning, approval logic is applied consistently through predefined rules instead of relying on individual reviewers to interpret data. This reduces unnecessary manual touchpoints and ensures your team focuses only on the applications that truly require human judgment.
Automation also improves visibility and control. Automatically generated audit trails and centralized rules, for instance, make it easier to understand outcomes, demonstrate compliance, and quickly adapt to new regulatory requirements or emerging fraud patterns.
3. Balance user experience with compliance via custom workflows and forms
Merchant onboarding isn’t one-size-fits-all: requirements vary based on factors like business type, industry, geography, and risk level.
Custom onboarding journeys account for this. When you tailor steps to each merchant’s risk profile, you ensure the right level of scrutiny without overcomplicating the experience. For example, a low-risk domestic seller may only need basic verification, while an international merchant operating in a high-risk industry, such as crypto, may require additional documentation and checks.
You can also apply dynamic forms that adapting real time, show only relevant fields, pre-fill known information, and eliminate redundant questions.
At the same time, configurable rules ensure compliance is consistently enforced. Additional checks, such as sanctions screening or biometrics, can be triggered automatically based on risk signals, allowing you to maintain strong controls while keeping the experience efficient for the majority of low-risk merchants.
4. Integrate ongoing monitoring for continuous risk updates
A merchant’s risk profile can change over time, and relying solely on onboarding data leaves a critical gap in your risk strategy. Integrating ongoing monitoring into the process closes that gap: this way, you turn vendor onboarding into the starting point of a continuous risk lifecycle.
Here’s how it works: real-time data feeds into risk models, allowing profiles to evolve based on a change in business status, new adverse information, or other risk signals coming to light. The key is that our customers can always decide what risk means to them and how to measure it.
This continuous feedback loop enables faster, more proactive decision-making. Instead of relying on periodic reviews, you can set thresholds that automatically flag unusual activity, allowing you to take action early – whether that means initiating additional verification, escalating a merchant for manual review, or adjusting limits.
How GBG Detected helps businesses onboard merchants quickly and efficiently
We’re a global identity technology company with more than 30 years of experience in the identity verification space. With our GBG Detected solution, you can verify businesses across the globe against company data and verify the individuals behind them using internationally recognized data sources, as well as 8,500+ ID documents from 195 countries.
We help payment processors, banks, and marketplaces, such as Weatherbys Bank and Gumtree, onboard merchants quickly and efficiently. In fact, our KYB customers have reduced their end-to-end onboarding times by up to 60% and cut manual customer checks by an average of 67%.
Here’s why 20,000 customers across 90 countries choose to partner with us:
Reduce merchant drop-off rates with comprehensive global data coverage
To reduce merchant drop-offs, you need to minimize the friction caused by incomplete or hard-to-verify data. Using our GBG Detected solution, you can tap into a wide range of data to verify merchants more efficiently without relying solely on what they provide.
This includes:
- 600+ million global company records
- More than 200 beneficial ownership registries
- 8,500+ global ID types
- 2,500+ sanctions, PEP, and adverse media lists
Instead of requesting additional documents when data is missing or difficult to access, you can use this coverage to automatically retrieve and validate key business details across jurisdictions.
And by applying comprehensive global data within a single workflow, you can move merchants from application to approval faster. This is particularly valuable for smaller or international merchants, where filling in data gaps with trusted external sources allows you to verify legitimacy while keeping the onboarding experience smooth.
Accelerate onboarding with configurable workflows and custom forms
Static onboarding processes can create unnecessary delays because every merchant is pushed through the same set of steps. By using GBG Detected’s configurable workflows, you can tailor onboarding journeys based on factors like business type, industry, or jurisdiction, allowing low-risk merchants to move quickly while automatically introducing additional checks for higher-risk cases.
With a drag-and-drop workflow builder, you can structure onboarding to request the right information at the right time, such as incorporation documents, bank statements, director and UBO details, or ID verification. Instead of overwhelming merchants with lengthy upfront forms, steps can be triggered contextually based on prior inputs.
What’s more, since the workflows are no-code, you can adjust requirements as regulations change or new risk signals emerge without relying on engineering resources.
We also provide you with custom forms and questionnaires, which enable you to capture more relevant, business-specific information early on. This reduces the need for follow-ups and ensures your risk assessments are based on more complete, higher-quality data from the start.
Incorporate multiple data points for tailored risk management
Relying on a single data point, like registry data or credit score, can lead to incomplete risk assessments and unnecessary friction. That’s why we designed GBG Detected to layer multiple data sources into a unified view of each merchant.
You can also integrate risk scoring and fraud signals into the process, such as:
- GBG Trust (our cross-industry intelligence network that monitors millions of transactions across 28 sectors with powerful rules to deliver real-time fraud protection)
- Email intelligence that analyzes the behavioral and transaction history of an email address
- Mobile intelligence that confirms a mobile number is genuine and the device isn’t lost or stolen
- Address verification with real-time address lookup and a type-ahead search function
Combining signals into a configurable risk score that reflects your specific risk appetite allows you to prioritize the factors that matter most to your business. This could include online reputation, credit indicators, and regulatory exposure for marketplaces and payment processors.
A layered approach also helps you identify inconsistencies earlier, such as mismatches between a merchant’s stated activity and their industry code, or their IP location.
Additionally, via open APIs, you can connect transaction monitoring tools to the solution to continuously update risk profiles and enhance automation.
We also provide an auto-build hierarchy tool that helps uncover complex ownership structures:
How Gumtree accelerated business onboarding and boosted user confidence with GBG Detected
Gumtree, a leading UK-based online marketplace, wanted to accelerate its merchant onboarding process to support growth in the home services sector.
Using our GBG Detected product, Gumtree was able to automate and scale its onboarding process for professional services accounts by reducing the need for time-consuming and costly manual checks. Gumtree also enhanced user safety with our solution by using real-time data to verify that those offering services are who they say they are.
Our GBG Detected solution’s customized and automated workflows enabled new service providers to complete verification quickly within a single, intuitive platform, ensuring a smooth start to a new business relationship.
“We chose GBG because we needed a simple, powerful solution to make business onboarding faster and easier for our service providers, whilst ensuring the necessary KYB checks have been completed,” says Joseph Rindsland, Gumtree’s Head of Digital Trust & Safety. “With its business onboarding solution, GBG Detected, we’re able to automate this process into a single, connected system, eliminating silos and static checks.”
Build an efficient merchant onboarding process that supports compliance with GBG Detected
An effective merchant onboarding process isn’t just about speed or compliance: it requires flexibility to adapt as merchant volumes grow and risk becomes more complex.
Our GBG Detected solution gives you the tools to design merchant onboarding journeys that are easily adjustable and data-driven so the process is more efficient and improves conversion rates, all while strengthening your overall risk and compliance framework.
Learn how we can help you improve your merchant onboarding process: Request a demo today.
FAQs: Merchant onboarding
The length of the merchant onboarding process can vary widely depending on the complexity of the merchant’s business, the level of risk, your own business type (for example, a financial institution, a payment service provider (PSP), and a marketplace will all have slightly different processes in place), and how much of the process is automated.
For low-risk merchants with complete and verifiable data, onboarding can take minutes or even seconds when automated verification and decisioning are in place.
For higher-risk or newly formed businesses, the process can take several days or longer, particularly if EDD reviews, due diligence, or enhanced background checks are involved. This is often necessary to assess fraud risk, detect potential red flags, and ensure compliance with anti-money laundering (AML) regulations.
The merchant onboarding process typically requires a combination of business, ownership, and identity information to support KYB and compliance requirements. This often includes business registration details, proof of incorporation, business address, and information about directors and beneficial owners.
In many cases, merchants must also provide documentation to verify the merchant's identity as part of the KYC process, along with bank account details and insights into the merchant's business model, expected transaction volume, and how they intend to process payments. The exact requirements can vary based on factors like jurisdiction, industry, and risk level, with higher-risk merchants generally subject to more detailed checks.
These checks help you assess risk, detect suspicious activities, and prevent financial crime while maintaining a smooth customer experience.
Risk scoring improves the merchant onboarding process by enabling faster, more consistent decision-making based on multiple data points. Instead of treating every merchant application the same, risk scoring allows you to assess each application based on its unique characteristics, including payment processing history and overall financial health.
This helps increase operational efficiency by automatically approving low-risk merchant accounts with minimal friction, while flagging higher-risk cases for additional review. By prioritizing attention where it’s needed most, risk scoring reduces manual workload, speeds up onboarding times, and strengthens compliance by ensuring that potential risks are identified early in the process.