Payment Gateways: Choosing an Integration for Your Fintech MVP

In the world of standard e-commerce, choosing among payment gateways comes down to two metrics: speed of integration and processing fees. However, for an MVP fintech founder, it’s rarely that simple. In reality, fintech MVP considerations involve a variety of structural complexities that move beyond accepting payments.

Most MVP fintech apps require much more than selecting payment gateways in their strict definition. They require financial infrastructure integration that often includes Banking-as-a-Service (BaaS), brokerage APIs, ledgering, card issuing, and more. 

Fintech features a variety of products ranging from consumer-facing budgeting apps and crypto platforms to enterprise-grade invoicing solutions and neobanks. Each type of MVP fintech product will have a different architecture. For example, Stripe or Braintree will suit B2C payment-centric fintech apps that seek global reach and ease of user onboarding. In contrast, enterprise-grade fintech B2B solutions will benefit from Worldpay or Adyen with their extensive acquiring capabilities, focus on compliance, and mature global infrastructure.

Each MVP fintech app will require an integration that satisfies its category-specific requirements. At the same time, it must balance it with the MVP purpose – proving product-market fit and fast time-to-market. Therefore, in this article, we’ll provide the most suitable payment gateway integrations considering the broader financial infrastructure and depending on the MVP fintech app category. 

MVP Fintech: Startup Priorities in Payment Gateways Selection

In the world of fintech apps, each category prioritizes different features of payment gateways. For instance, an earned-wage access (EWA) app and a cryptocurrency wallet will have absolutely different requirements. EWA is a part of the traditional banking system and operates with traditional money, or fiat currencies (unlike crypto – Bitcoin, Solana, etc). The goal of this app is often to quickly transfer small amounts (e.g., $50-$100) into local accounts. So, the priority will be the payment gateway’s support for real-time rails (Visa Direct, Mastercard Send, or FedNow). 

In contrast, a cryptocurrency wallet is a nightmare for traditional banking gateways. This is due to traditional payment gateways perceiving cryptocurrency purchases as ‘high-risk’ transactions and blocking them. Plus, buying/selling cryptocurrency is irreversible, while in traditional banking, there are chargebacks or fraud disputes, etc. So, while a crypto platform should connect to traditional banking cards for purchasing the cryptocurrency, there are a host of different payment gateways that often support Web3 “Plug-and-Play” Widgets. For example, these can be MoonPay, Ramp Network & Transak, and Stripe Crypto Onramp. Additionally, there are Coinbase Onramp and Banxa & BVNK for enterprise-grade licensed networks.

MVP Fintech App Type	Payment Gateways Selection Criteria
Digital Banking	compliance, scalability
Lending Platforms	Fraud prevention
Cross-Border Remittance	Transaction speed and coverage
Personal Finance	Reliability of data aggregation/connectivity
Wealth Management	Compliance, security, auditability
Cryptocurrency Platforms	Fiat on/off ramps, speed, fraud prevention
Earned-Wage Access	Payroll integration, repayment automation
Buy Now Pay Later (BNPL)	Accuracy of credit decisioning and fraud prevention
Merchant Payments	Settlement speed, scalability, costs
Expense Management	Spend control, accounting integration
Invoice Financing	Verification, fraud prevention, compliance, auditability
Insurance Technology	Speed of claims processing
Treasury Management	Cash visibility

For this purpose, to implement these types of MVP fintech apps, Fintech App Development utilizes a variety of payment gateways and broader financial infrastructure integrations.

MVP Fintech Apps & Startup-Grade Payment Gateways Recommendations

In this section, we’ll discuss payment gateways and broader financial integrations for most fintech MVP solutions, such as neobanks all the way up to treasury management. In addition, you can check out our article “Finance Startups: Top 10 in 2026 for AI Trends and Use Cases” for more ideas for launching your fintech startup.

Digital Banking

To develop an MVP for a digital bank, Startup Services focus on utilizing existing infrastructure with all its complexity as much as possible. 

MVP Fintech App Type	MVP Focus	Criteria for Selecting Payment Gateways
Digital Banking	• verify user identity to issue a virtual debit card; • authenticate users and show their account balances; • enable transactions and show their transaction history.	1. Strict KYC/AML Ledgering 2. Core Banking API Compatibility 3. Card Program Management (ability to spin up virtual cards such as Visa or Mastercard and sync with Google Pay or Apple Pay)

Therefore, the logical startup-focused BaaS integrations include Swan for the European region and Unit for the US. These are all-in-one Banking-as-a-Service platforms. They handle a large portion of compliance and infrastructure tooling and, therefore, remove the need for a startup to build such an infrastructure from scratch. As a result, BaaS comes with different types of fees, such as per-user, for setup, for infrastructure, and interchange revenue share. 

But, not all BaaS will do for an MVP fintech app in digital banking. In fact:

“Many traditional BaaS providers will only work with you if you’re a regulated financial institution… The time between contract signing and actually launching your embedded banking features can stretch to more than a year under this operating model. “

So, choosing Swan or Unit removes the need for early licenses or a compliance team, as KYC/AML ledgering and other security features take care of it.

Lending Platforms

Generally, an MVP lending platform focuses on the accuracy of its algorithm for underwriting loans. Therefore, things like gathering data and payment collection will be enabled via existing off-the-shelf solutions. 

MVP Fintech App Type	MVP Focus	Criteria for Selecting Payment Gateways
Lending Platforms	• gather applicants’ data for borrowing; • obtain and process credit data through open banking; • manage the loan payout and collect repayment.	1. pipeline to open banking data 2. Low-cost ACH/SEPA disbursal 3. Automated recurring loan collection from the user’s bank account

All in all, the most common MVP combination here is Plaid + Increase or Plaid + Synctera. Plaid enables sharing bank information without exposing the user’s login credentials to fintech apps. As for ACH disbursal, it can be enabled in your MVP fintech app with APIs, such as Synctera or Increase.

This MVP fintech development can start as niche solutions, such as creator cash advances or other vertical-specific lending. In addition, an MVP startup can offer embedded financing to operate inside SaaS products. Once this works out, the lending MVP does capital-intensive custom work, e.g., builds its custom infrastructure, obtains licenses, and strikes partnerships.  

Cross-Border Remittance

This MVP fintech development focuses on testing whether migrant workers or businesses hiring worldwide are ready to change traditional money transfer services and banks in favor of a more modern and faster solution. Usually, an MVP would start with a single high-demand corridor, such as the UAE to India or the US to Mexico, and expand to more countries.

MVP Fintech App Type	MVP Focus	Criteria for Selecting Payment Gateways
Cross-Border Remittance	•  exchange rate calculation between currencies of two countries in real-time • securing a money-transfer corridor	1. Multi-currency web liquidity pools to calculate the lowest exchange rate markup and transfer fees 2. Support for localized payment rails 3. Compliance for the origin and destination jurisdictions

So, the best payment gateways and integrations include Wise Platform API or Nium. They allow your startup to immediately use licensed money-transfer corridors and access real-time local FX rails. Then, there is also Braintree, which leverages PayPal’s global consumer wallet network. Finally, if your MVP falls into an enterprise-grade high-volume remittance solution, then BVNK provides near-instant settlement globally utilizing institutional stablecoins (USDC/USDT).

Personal Finance: The Most Affordable MVP Fintech App to Launch

In short, this type of MVP needs to aggregate users’ data from multiple bank accounts, process it, and provide a budgeting solution. 

MVP Fintech App Type	MVP Focus	Criteria for Selecting Payment Gateways
Personal Finance	• secure way to collect or access user spending data • interactive dashboards and budgeting features	1. Secure, read-only open banking API 2. Merchant gateway for subscriptions

After all, the fastest way to set it up is to use Plaid for accessing the data and Stripe Billing for collecting your app’s subscriptions. 

Wealth Management: Pairing Payment Gateways with Brokerage Rails

Overall, the MVP fintech development will focus on making traditional brokerage more accessible and affordable. In the first place, the app will need to do an onboarding via a questionnaire to gauge the user’s risk tolerance. Then, it would provide portfolio advice, offer opportunities to buy stocks, and rebalance automatically within the initially set thresholds.

MVP Fintech App Type	MVP Focus	Criteria for Selecting Payment Gateways
Wealth Management	• ability for stock purchasing with cash depositing • user authentication, verification, and onboarding	1. Instant ACH/SEPA deposits to enable users to capitalize on market changes immediately 2. Brokerage API

In essence, the best existing solutions for this type of MVP fintech apps are Alpaca API or DriveWealth. In addition, you might want to add Plaid. This can be useful in case your app needs to verify income & balance or speed up onboarding.

Cryptocurrency Platforms

All in all, for building consumer-facing web3 apps that enable buying and selling crypto inside apps, the MVP can use MoonPay, Ramp, Transak, & Banxa. 

MVP Fintech App Type	MVP Focus	Criteria for Selecting Payment Gateways
Cryptocurrency Platforms	• ability to buy crypto or other digital assets with fiat currency (traditional cash) • safe transfer to a crypto wallet and secure transactions	1. Crypto-native gateway 2. Built-in fraud for chargeback fraud for the fiat currency side 3. Multi-chain settlement layer

Another popular MVP fintech example can be a cryptocurrency platform with a non-custodial wallet for a lower compliance burden and faster time-to-market. Overall, the app will have three layers: 

• payment rails for traditional cash via networks like Visa or Mastercard; 
• the engine that converts fiat currency into crypto and makes a purchase; 
• the blockchain settlement layer, where the purchased crypto is sent over the blockchain to a user-owned crypto wallet like MetaMask.

By and large, crypto-native gateways like Stripe Crypto Onramp or Onramper are the most common solutions.

Earned-Wage Access (EWA)

Generally, the MVP version of the fintech app would focus on offering employers to provide on-demand pay to their employees as a benefit. 

MVP Fintech App Type	MVP Focus	Criteria for Selecting Payment Gateways
Earned-Wage Access (EWA)	• ability to integrate with an employer’s payroll for accrued hours and wages • allow a worker to pull an advance on their wages	1. Immediate money transfer like Visa Direct/Mastercard Send 2. Fees optimization: small transactions might be better served with flat fees than percentage-based fees

To start, an EWA MVP can integrate with payroll software, e.g., Gusto. An employer who uses it would opt in and grant access to payroll schedules and historical pay data. The EWA app will be estimating earned wages based on this data.  Then, an employee would be able to request a small transfer, usually within a $50-$100 range. For this purpose, the app should integrate with payment infrastructure providers like Marqeta or Stripe Issuing to provide payouts.

Buy Now Pay Later (BNPL)

Here, the idea is to develop a BNPL solution marketed directly to merchants of different online stores, e.g., on Shopify, e-commerce platforms, or marketplaces. Equally, another path is to develop a BNPL integration for a platform like Shopify, WooCommerce, etc. Such an MVP either needs to use its own capital to pay merchants while collecting payments from users over time, or open a credit line. For this purpose, Stripe or Adyen can be used for payments, and Plaid for risk scoring. 

MVP Fintech App Type	MVP Focus	Criteria for Selecting Payment Gateways
Buy Now Pay Later (BNPL)	• credit evaluation in real-time • split the purchase into 4 installments • managing payment collection	1. Instant credit card tokenization 2. Fraud and risk scoring APIs

More Types of MVP Fintech Apps & Payment Gateways & Financial Integrations 

MVP Fintech App Type	MVP Focus	Criteria for Selecting Payment Gateways	MVP-Grade Integration
Merchant Payments	• create an embedded window for merchants to accept credit card payments	1. White-label API to brand payment processing 2. Capabilities to split payments and route payments automatically	Finix or Tilled (White-Label PayFacs) Or Worldpay for enterprise-grade, highly-regulated MVPs
Expense Management	• the ability for an employer to issue an employee expense card • employer must be able to set limits dynamically and process receipts	1. Gateway should integrate with card networks to issue cards and control transactions in real-time 2. Provide webhooks to take a receipt photo upon transaction	Stripe Issuing or Galileo
Invoice Financing	to provide cash advances for unpaid invoices: • uploading and verifying B2B unpaid invoices • assess the credit profile of a B2B client • issuing cash advances upon the invoices	1. payment gateways catering to B2B escrow accounts and virtual IBANs 2. payment gateways that are optimized for large-scale corporate bank wires.	Modern Treasury + SVB / Direct Bank API
Insurance Technology	MVP that focuses on single-line insurance should: • workflow for single-line policy quotes; • digital generation of documents; • premiums collection.	1. gateway should cater best to subscriptions with smart retries; 2. Property & Casualty Regulatory Reporting requires compliance and payment trails for audits.	Stripe Billing or Adyen for consumer-facing setups; Worldpay for enterprise InsurTech
Treasury Management	• access to balances in several banks of different countries and displaying them on a consolidated dashboard; • transfer of idle cash into interest-bearing accounts.	1. Payment gateways that support SWIFT, BAI2, or ISO 20022 formats 2. APIs of payment gateways should support high-security multi-signature  approvals	Treasury Prime

FAQ: Payment Gateways: Choosing an Integration for Your Fintech MVP