Build vs. Buy for KYC: When In-House Identity Verification Stops Making Sense

Use Cases of Merchant Acquiring: QR, POS, SoftPOS, BNPL and More

<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/marketing-cms/m2p-blog/2026/09/m2p_multirail_violet_centered_2000x1000.webp" alt="One Platform. Every Rail. All Your Merchants Covered." title="" id="w6vlef0gi" width="100%" height="362">Merchants today don't accept payments through a single channel — they accept them through all of them. A customer might tap a card, scan a UPI QR code, or pay through a mobile wallet, often within the same store, sometimes within the same hour. For the merchant, this is a checkout convenience. For the acquiring bank or PSP behind that checkout, it's a considerably harder infrastructure problem.This is what the industry calls multi-rail acquiring — the ability to accept, process, and settle payments across different payment rails through a single, unified system rather than a patchwork of disconnected channels.<h1 class="heading-node" id="omzfpvt62">Why Multi-Rail Acquiring Has Become Non-Negotiable</h1>A few years ago, an acquiring bank could reasonably specialize: card acquiring on one system, UPI on another, wallet integrations handled as one-off partnerships. That approach doesn't hold up anymore, for a few reasons:<ul class="list-node" id="pabf08c6v"><li>Payment preferences are fragmented and shifting. Cards remain dominant for certain merchant categories, UPI has become the default for everyday retail in markets like India, and wallets continue to hold share in specific demographics and geographies. Merchants need to support all three to avoid losing sales at checkout.</li><li>Merchants expect one relationship, not three. A merchant onboarding with an acquirer wants a single dashboard, a single settlement cycle, and a single support line — not three vendor relationships stitched together on the back end.</li><li>Regulatory and interoperability requirements keep expanding. Rail-specific mandates (tokenization for cards, UPI's own compliance framework, wallet KYC norms) all have to be satisfied simultaneously, and increasingly, in real time.</li><li>Operational cost adds up fast. Running separate reconciliation, risk, and reporting pipelines per rail multiplies the acquirer's operational overhead and increases the chance of errors at settlement.</li></ul>The acquirers that handle this well aren't the ones with the most integrations — they're the ones that have abstracted the complexity of each rail behind a common, well-architected core.<h1 class="heading-node" id="k1w0amfqv">What "Handling" Multi-Rail Actually Requires</h1>Supporting multiple rails isn't just a matter of adding more payment method logos to a checkout page. A platform genuinely built for multi-rail acquiring needs to solve for several things at once:1. A unified transaction and settlement layer Regardless of whether a payment came in via card network, UPI, or a wallet provider, the acquirer needs consistent transaction data, consistent settlement timelines, and a single reconciliation process. Without this, finance teams end up manually <a class="link" href="https://m2pfintech.com/recon360/?utm_source=blg&amp;utm_medium=mms&amp;utm_campaign=multirail" target="_blank">reconciling</a> three different formats from three different rails.2. Rail-specific compliance without rail-specific silos Cards require PCI-DSS adherence and network-specific tokenization; UPI has its own NPCI compliance and dispute-handling framework; wallets bring their own KYC and interoperability rules. A well-designed acquiring platform builds compliance into the core architecture per rail, while keeping the merchant-facing experience consistent.3. Risk and fraud monitoring that spans rails Fraud patterns don't respect payment method boundaries — a merchant being targeted for card fraud may also see anomalies on UPI. Acquiring platforms need FRM systems that monitor transaction behavior holistically across all rails a merchant uses, not in isolated per-rail silos.4. Merchant onboarding that scales across payment types A merchant shouldn't have to go through separate onboarding for card acceptance versus UPI acceptance. Modern platforms consolidate <a class="link" href="https://m2pfintech.com/kyc-suite/?utm_source=blg&amp;utm_medium=mms&amp;utm_campaign=multirail" target="_blank">KYB</a>, documentation, and risk checks into a single onboarding flow that activates all relevant rails together.5. Real-time visibility for merchants Merchants want to see all their transactions, across every rail, in one dashboard — with clarity on settlement status, fees, and disputes, without switching between tools.<h1 class="heading-node" id="rbns5e89y">How M2P's Merchant Acquiring Solution Solves This</h1>This isn't a theoretical challenge for us — it's one we've built our <a class="link" href="https://m2pfintech.com/merchant-acquiring-solutions/?utm_source=blg&amp;utm_medium=mms&amp;utm_campaign=multirail" target="_blank">Merchant Management System </a>(MMS) around from the ground up.M2P's acquiring platform is designed as a single core system that natively supports cards, UPI, and wallet-based payments, rather than layering rail-specific add-ons onto a card-first architecture. A few ways this shows up in practice:<ul class="list-node" id="cepo0cpxy"><li>Unified merchant onboarding: Merchants onboard once through a consolidated KYB and risk-check process, and are activated across the payment rails relevant to their business — without separate onboarding cycles per rail.</li><li>Consolidated settlement and reconciliation: Transactions across cards, UPI, and wallets flow into a common settlement engine, giving merchants (and the acquiring bank's finance teams) one clean view instead of fragmented, rail-by-rail reports.</li><li>Cross-rail risk and fraud monitoring: Our <a class="link" href="https://m2pfintech.com/frm-aml/?utm_source=blg&amp;utm_medium=mms&amp;utm_campaign=multirail" target="_blank">FRM</a> capability is built to evaluate merchant transaction behavior across all active rails together, so fraud signals aren't missed because they showed up on a different payment channel than the one being watched.</li><li>A single merchant dashboard: Merchants get one place to track transactions, settlements, and disputes — regardless of which rail the customer paid through.</li><li>API-first integration: Banks and PSPs can plug into M2P's acquiring stack through a consistent set of APIs, whether they're enabling card acceptance, UPI QR acceptance, or wallet payments, reducing the integration burden on their engineering teams.</li></ul>The result is that banks and PSPs partnering with M2P aren't choosing between rail coverage and operational simplicity — they get both, from a platform already built to handle the complexity underneath.<h1 class="heading-node" id="aqh526cca">The Direction This Is Heading</h1>As payment behavior continues to diversify — and as new rails or interoperability mandates inevitably emerge — the acquirers best positioned to adapt will be the ones running on infrastructure designed for multi-rail from day one, not the ones retrofitting new channels onto legacy, card-only cores.For banks and PSPs evaluating their acquiring stack, the question worth asking isn't "can this platform support UPI or wallets too?" It's "was this platform built to treat every rail as a first-class citizen?"Ready to simplify multi-rail acquiring for your merchants?<a class="link" href="https://m2pfintech.com/contact-us/?utm_source=blg&amp;utm_medium=mms&amp;utm_campaign=multirail" target="_blank">Talk to our team</a> about how M2P's Merchant Acquiring Solution can help you accept cards, UPI, and wallet payments on one unified platform.

How Modern Acquiring Platforms Handle Multi-Rail Payments (Cards, UPI, Wallets)

<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2022/07/Creatives-for-Debit-Cards-blog_1M-1.webp" alt="M2P Fintech" title="" width="100%" height="347">Debit cards remain one of the most deeply anchored layers of the payment ecosystem. Even as Unified Payments Interface (UPI) and credit cards dominate high-frequency retail transactions, the sheer footprint of debit cards remains massive: as of late 2025 / 2026, there are over 1.03 billion outstanding debit cards in force in India. While everyday POS and online transaction volumes have shifted toward UPI, debit cards remain the essential, secure backend plumbing of Indian banking - driving high-volume ATM activity, enabling cardholder authentication, and serving as the primary account-access tool for over a billion users.Highly secure and effortless to use, debit cards let cardholders instantly tap, enter a PIN, or tokenise their credentials for cashless transactions, drawing directly from an existing bank balance with zero interest or debt risk.This guide covers what debit cards are, the types issuers offer, the regulatory rules issuers must follow, and new for this update - a practical walkthrough of how a bank, NBFC, or fintech actually becomes a debit card issuer in 2026.<h2 class="heading-node" id="b7bd">What are debit cards?</h2>Debit cards are payment instruments linked directly to a bank account, issued by banks and NBFCs to individuals and corporate entities. They're used for in-store and online payments, fund transfers, and cash withdrawals. Funds move from the cardholder's account to the recipient's account in real time, at the moment of transaction - there's no credit extended and nothing to repay later.Here are the key components of a debit card.<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2022/07/Creatives-for-Debit-Cards-blog_3M.webp" alt="M2P Fintech" title="" id="5csx15muw" width="100%" height="347"><h2 class="heading-node" id="da17">Types of debit cards</h2>Banks and NBFCs classify debit cards by payment network, technology, and use case.<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2022/07/Creatives-for-Debit-Cards-blog_2M.webp" alt="M2P Fintech" title="" id="tae1ugzin" width="100%" height="347"><h3 class="heading-node" id="9d76">Payment platform</h3><ul class="list-node" id="fgmfns2b2"><li>Visa Debit Card - runs on the VISA network</li><li>MasterCard Debit Card - runs on the MasterCard network</li><li>RuPay Debit Card - runs on NPCI's RuPay network</li></ul><h3 class="heading-node" id="4bba">Technology</h3><ul class="list-node" id="6ruhqggsp"><li>Contactless Debit Card - RFID / NFC-enabled; tap to pay, no physical handover needed</li><li>Chip &amp; PIN Debit Card - encrypted chip storage, PIN-verified transactions</li><li>Magnetic Stripe Debit Card - swiped through a card reader</li></ul><h3 class="heading-node" id="7b59">Usage</h3><ul class="list-node" id="zld71taol"><li>Prepaid Debit Card - pre-loaded with a fixed balance, reloadable</li><li>Virtual Debit Card - digital-only, used for online purchases via mobile banking apps</li><li>Disposable Debit Card - instantly generated virtual card for one-time online use</li><li>International Debit Card - enabled for overseas payments and withdrawals</li><li>Business Debit Card - issued to employees for business purchases and expenses</li></ul><h2 class="heading-node" id="ytj1qos8a">How to Become a Debit Card Issuer in 2026</h2>Becoming an issuer isn't a single license application - it's a stack of decisions, each with its own vendor and compliance layer. Here's how banks, NBFCs, and neobanks typically approach it today.<h4 class="heading-node" id="zyj3v8d6n">1. Secure BIN Sponsorship</h4>A Bank Identification Number (BIN) is what ties a card to a network and a settlement bank. Licensed banks apply for and hold their own BIN directly with the network (Visa, Mastercard, RuPay). Non-banks and neobanks that want to issue cards but don't hold a banking license instead enter a BIN sponsorship arrangement - partnering with a sponsor bank that lends its BIN and regulatory standing, while the non-bank runs the customer-facing program. This is the single most important early decision, since it determines who carries ultimate regulatory accountability.<h4 class="heading-node" id="1aapg2zfp">2. Choose a Card Management System (CMS)</h4>Once sponsorship is in place, the next decision is the technology layer that actually issues, manages, and processes the cards - card creation, PIN management, transaction authorization, limits, controls, and lifecycle management. Legacy CMS platforms are slow to configure and typically take 12+ months to launch a program. Modern API-first CMS platforms, like M2P's, compress that timeline to weeks by handling BIN application support, issuer processing, card printing and fulfillment coordination, mobile wallet tokenization, and scheme contract management under one stack - plus a proprietary card switch and ACS (authentication gateway), which most other providers don't offer natively.<h4 class="heading-node" id="md2gjpm4c">3. Integrate with the Card Network</h4>Whichever network the card runs on - RuPay, Visa, or Mastercard - the issuer (or its CMS partner) needs to complete technical certification and testing with that network's directory server and processing systems. This step governs how transactions authorize, settle, and route, and it needs to be repeated for every network the program supports.<h4 class="heading-node" id="gvu7f78cw">4. Build Compliance and KYC Into the Program</h4>RBI mandates apply from day one: customer KYC at onboarding, adherence to the debit card issuance directives below, and ongoing reporting obligations. For BIN-sponsored programs, compliance is a shared responsibility between the sponsor bank and the technology/program partner - but the sponsor bank remains accountable to the regulator regardless of who built the tech.<h2 class="heading-node" id="f613">RBI directive on debit cards</h2>While the foundational rules from 2022 remain active, the RBI has introduced several critical amendments through its 2024, 2025, and April 2026 Master Directions that modern issuers must follow:<ul class="list-node" id="b6q9hl02l"><li>Network Portability (Choice of Network): Card issuers are prohibited from entering into exclusive agreements with card networks. They must provide eligible customers the option to choose their preferred card network (e.g., RuPay, Visa, Mastercard) at the time of issuance or renewal.</li><li>Co-branding Autonomy: Banks and registered NBFCs no longer need prior RBI approval to become co-branding partners for debit cards, provided they follow their board-approved policies. The co-branded card must explicitly indicate the partnership and cannot be marketed solely as the partner's product.</li><li>Account Eligibility &amp; Overdrafts: Banks can issue debit cards only to savings or current account holders, not to cash credit or loan accounts. However, the RBI permits linking overdraft facilities provided under Pradhan Mantri Jan Dhan Yojana (PMJDY) or Kisan Credit Card (KCC) accounts to a debit card.</li><li>Mandatory Digital Security (2026): Effective April 1, 2026, an Additional Factor of Authentication (AFA) is strictly mandatory across all digital payment channels, significantly changing the security baseline for new programs.</li><li>NBFC Issuance: NBFCs can issue debit cards (virtual or physical) only after obtaining explicit RBI approval.</li><li>Customer Consent &amp; Controls: Customers cannot be forced to accept a debit card, and declining one cannot be used to deny other bank services. Furthermore, banks must provide accessible channels (app, internet banking, IVR, SMS) to disable, block, or adjust limits on the card at any time.</li></ul><h2 class="heading-node" id="lpx87xmkp">New Card Issue - What It Actually Means?</h2>New card issue refers to the technical process behind creating a fresh debit or credit card for a customer, distinct from a reissue or replacement. It typically involves three steps:<ol class="list-node" id="n5js0qvz5"><li>PAN generation - a unique Primary Account Number is generated for the card, following network (Visa/Mastercard/RuPay) numbering rules.</li><li>Core banking mapping - the newly generated PAN is linked to the customer's underlying bank account in the core banking system, so transactions settle against the correct balance.</li><li>Provisioning - the card is issued either physically (printed and dispatched) or virtually (instantly provisioned into a banking app, and increasingly tokenized directly into Apple Pay, Google Pay, or UPI for immediate use, ahead of the physical card arriving).</li></ol><h2 class="heading-node" id="lphpf5tot">What's Changed: 2026 Trends in Debit Card Issuance</h2>A few shifts have become standard practice since this guide was first written:<ul class="list-node" id="h14jjnk81"><li>Virtual-first issuance - Many issuers now provision a virtual card instantly at account opening - usable immediately in Apple Pay, Google Pay, or UPI - with the physical card following by mail. This closes the historical gap between account opening and having a usable card.</li><li>Card-as-a-Service (CaaS) - This has become the standard industry term for API-driven, modular card issuance - the model this guide describes in the "How to Become an Issuer" section above, as opposed to monolithic legacy platforms.</li><li>Tokenization as a baseline feature - Following RBI's card tokenization guidelines, storing raw card numbers on merchant servers is no longer permitted for online transactions. Modern issuance platforms now build tokenization into the default issuance flow rather than treating it as an add-on.</li></ul><h2 class="heading-node" id="1f7e">Why Banks and NBFCs Issue Debit Cards?</h2><ul class="list-node" id="21wiul5yx"><li>Stronger customer retention and engagement</li><li>Higher cross-sell opportunities and contextual conversion into pay-later products</li><li>No NPA exposure - no interest or repayment risk on debit spend</li><li>Support for digital transactions and financial inclusion goals</li><li>Built-in spending discipline for cardholders, since debit draws only from available balance</li></ul><h2 class="heading-node" id="8bec">The Problem With Legacy Card Issuance Platforms</h2>Legacy infrastructure was built for a slower, less customized era of card issuance. It struggles to support the range of card programs, personalization, and go-to-market speed that today's issuers need. Standing up a card program on legacy rails can take the better part of a year — a lag that shows up directly as lost cost, effort, and competitive ground.<h2 class="heading-node" id="6462">Modern APIs Are Changing the Issuance Game</h2>An API-first card issuing platform lets issuers build differentiated debit products without inheriting legacy constraints. Hosted on cloud infrastructure, these platforms scale with the business and adapt as new use cases and regulatory requirements emerge.<h2 class="heading-node" id="ty48ay9he">Launch a Debit Card Program in Weeks, Not Quarters</h2>With <a class="link" href="https://m2pfintech.com/debit-cards/" target="_blank">M2P's API-based debit card platform</a>, issuers can go to market with a full debit card program in weeks. That includes <a class="link" href="https://m2pfintech.com/blog/reaching-the-last-mile-m2ps-debit-card-revolution-for-thrift-and-rural-banks/" target="_blank">BIN sponsorship support</a>, issuer processing, card printing and fulfillment coordination, mobile wallet tokenization, and scheme contract management - backed by a proprietary card switch and <a class="link" href="https://m2pfintech.com/acs/" target="_blank">ACS</a>, features most other providers don't offer in-house.Issuers get custom controls, real-time data-driven transaction authorization, and the ability to launch virtual and disposable cards alongside physical ones. The platform covers core issuing, processing, and back-office operations - including reconciliation and chargeback handling - plus support for marketing and customer service. Programs are modular, so issuers can adopt what fits their current stage of readiness.Want to know more about launching a <a class="link" href="https://m2pfintech.com/blog/say-goodbye-to-hassles-simplify-debit-card-management-with-m2p-fintechs-revolutionary-platform/" target="_blank">debit card program</a>? <a class="link" href="https://m2pfintech.com/contact-us/?utm_source=M2PBlogs&amp;utm_medium=social&amp;utm_campaign=Debit_Card_Issuer2026_Blog" target="_blank">Talk to us today! </a><h3 class="heading-node" id="45k9reaab">Frequently Asked Questions</h3><ul class="list-node" id="wrnm8hz5j"><li>What does "new card issue" mean? It refers to generating a brand-new card - creating the PAN, mapping it to the customer's core banking account, and provisioning it physically or virtually - as opposed to reissuing or replacing an existing card.</li><li>Can a non-bank become a debit card issuer? Not directly. Non-banks and neobanks issue debit cards through a BIN sponsorship arrangement with a licensed bank, which holds regulatory accountability while the non-bank runs the customer-facing program.</li><li>What is Card-as-a-Service (CaaS)? CaaS is the industry term for modular, API-driven card issuance infrastructure - covering issuance, processing, and lifecycle management as configurable services rather than a monolithic legacy build.</li><li>Is tokenization mandatory for debit card issuance in India? Yes. Following RBI's tokenization guidelines, merchants cannot store raw card numbers for online transactions, and modern issuance platforms build tokenization in as a default part of the issuance flow.</li></ul><a class="link" href="https://m2pfintech.com/newsletter/">Subscribe</a>&nbsp;to our newsletter and get the latest fintech news, views, and insights, directly to your inbox.Follow us on&nbsp;<a class="link" href="https://www.linkedin.com/company/m2pfintech/mycompany/">LinkedIn</a>&nbsp;and&nbsp;<a class="link" href="https://twitter.com/m2pfintech">Twitter</a>&nbsp;for insightful fintech tales curated for curious minds like you.

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