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What is UPI: Everything about Unified Payments Interface

02 January 202519 min read
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The United Payments Interface (UPI) stands as a remarkable instant payment system, meticulously crafted by the National Payments Corporation of India (NPCI) since its establishment in 2016. In the latest figures as of October 2023, UPI transactions have achieved an unprecedented milestone, soaring to an impressive 17.16 lakh crores, with a remarkable 11.41 billion transactions. This represents a noteworthy 55% year-on-year growth in transaction volume and a substantial 42% surge in transaction value. For a comprehensive exploration of UPI and its future prospects, we extend an invitation to delve into our detailed analysis of this financial phenomenon. Furthermore, our exploration unveils the rationale behind Google's endorsement of the UPI model, which has resonated to the extent of capturing the attention of the United States Federal Reserve Bank, considering its emulation for their proposed inter-bank real-time gross settlement service, 'FedNow.' Discover why UPI stands as a testament to India's groundbreaking strides in the innovative realm of unified payment systems.


In 2012, the Reserve Bank of India (RBI) unveiled a visionary four-year plan, expressing a steadfast commitment to establishing a secure, efficient, accessible, inclusive, interoperable, and authorized payment and settlement system in India. To bring this vision to fruition, the National Payments Corporation of India (NPCI) was established under the guidance of the RBI, entrusted with the task of crafting this innovative payment system. The transformative moment arrived on April 11, 2016, when UPI was launched, emerging as a beacon of success among India's deep-tech financial innovations. At its core, UPI aimed to address a significant challenge – maximizing financial inclusion, particularly for the underbanked citizens of the nation. To achieve this, a mobile-first, user-friendly, and multi-bank operable payment system was envisioned. This system was meticulously designed atop an open infrastructure, fostering an environment that encouraged private entities to innovate and develop applications atop the existing public infrastructure. The result was a groundbreaking initiative that not only met the immediate needs of the underbanked but also laid the foundation for a dynamic and inclusive financial landscape in India.

What is UPI ID?

UPI stands as a sophisticated payment markup language, playing a pivotal role in facilitating seamless inter-bank peer-to-peer (P2P) and person-to-merchant (P2M) transactions. Executing a transaction on UPI requires an individual to possess a Virtual Payment Address (VPA) or UPI ID, serving as a unique identifier. VPAs, akin to email addresses, function as widely accepted digital bank account numbers. To create a VPA, a consumer must possess a bank account and a valid debit card, with the UPI VPA becoming the addressing layer for the associated bank account. The flexibility of UPI is evident as one VPA can be linked to multiple banks, allowing users to create multiple VPAs on a single bank account. The dynamic nature of the system allows for the addition or deletion of bank accounts as needed. Once activated, users can seamlessly transact on UPI through popular payment apps like Google Pay, PhonePe, or PayTM.

What is VPA in UPI ID?

Unified Payment Interface (UPI), a Virtual Payment Address (VPA) functions akin to an email ID, serving as a unique identifier for individuals to send or receive money effortlessly. UPI revolutionizes fund transfers by eliminating the need for cumbersome details like IFSC codes or bank account numbers; all that's required is the simplicity of the VPA. Think of VPA as the key to the UPI kingdom. It's the sole piece of information needed for all transactions, providing a streamlined and user-friendly experience. With the UPI interface, users enjoy the privilege of initiating fund transfers to any UPI-enabled bank account holder 24/7, with transactions processed instantaneously. For a seamless UPI experience, a valid username, in the form of a VPA, is a prerequisite. This unique identifier is intricately mapped to the user's bank account, ensuring a secure and personalized connection for every transaction. In the world of UPI, simplicity meets security, and the VPA stands as the gateway to hassle-free digital transactions.

What is UPI PIN?

The UPI PIN, or Unified Payments Interface Personal Identification Number, stands as a distinctive four or six-digit code, acting as the guardian for all bank transactions. Its uniqueness lies in its role as a virtual payment address during the setup of a UPI account. This crucial code serves as the key to secure financial transactions and should be guarded, as sharing it could pose the risk of financial fraud. As the gateway to UPI accounts, the UPI PIN ensures a secure and personalized virtual payment experience.


How to Generate a UPI PIN?

Before diving into the convenience of UPI transactions, you need to sign up for the service at your bank through mobile or net banking. Follow these steps to generate your unique UPI PIN:

Step 1: Select and visit a UPI application like PhonePe, Paytm, Google Pay, Amazon Pay, etc.

Step 2: Navigate to the "Bank Account" option on the application to view the list of linked banks.

Step 3: Choose your preferred bank to set a UPI PIN. If you're a first-timer, click on "SET PIN."

Step 4: Enter the expiry date and last six digits of your ATM or Debit card to receive an OTP on your registered mobile number.

Step 5: Enter the OTP, set a UPI PIN of your choice, and click "Submit."

Upon completion, a congratulatory message confirms successful UPI PIN generation. Now, you can engage in online transactions with your linked bank account, using the UPI PIN for authentication. If you ever lose your mobile, forget the PIN, or enter it incorrectly three consecutive times, you'll need to reset it. Here's how:

How to Reset Your UPI PIN?

Step 1: Open the UPI application for which you want to reset the PIN.

Step 2: Select the "Send Money to Anyone" option.

Step 3: Click on the setting icon at the top right, and go to the bank section.

Step 4: Under the bank you want to reset the PIN for, choose "Change PIN."

Step 5: Enter the expiry date and last six digits of the linked ATM or Debit card.

Step 6: Enter the current UPI PIN, followed by the new PIN. Re-enter the new PIN and click "Confirm" to reset.

While UPI PIN and mPIN are sometimes confused, they serve different purposes. Keep reading to understand the distinctions between the two.

Key Features of UPI

Real-time Transactions: UPI operates as a fast, real-time system, available 24/7, 365 days a year, ensuring swift and efficient financial transactions.

Transaction Charges: As of now, individual UPI payments for peer-to-peer transactions are entirely free. However, starting from April 1, 2023, an additional interchange fee of 1.1 per cent is levied on merchant UPI transactions exceeding ₹2,000, conducted using prepaid payment instruments (PPIs) such as wallets or cards.

No Minimum Transaction Limit: UPI eliminates any minimum limit on transaction amounts, providing users with the flexibility to transact according to their specific needs.

Daily Transaction Limit: While there is no minimum limit, regular UPI transactions are subject to a maximum daily limit of ₹1 Lakh, ensuring security and control in financial transactions. Empowering seamless transactions, UPI continually evolves to simplify payments through innovative features.

UPI ID Simplifying Payments

UPI continually evolves to simplify payments through innovative features:

Aadhaar-Based UPI Activation:

Google Pay recently introduced a groundbreaking feature – Aadhaar-based authentication for Unified Payments Interface (UPI). This integration allows users to register for UPI using their Aadhaar credentials, eliminating the need for a debit card. The strategic deployment of Aadhaar-based onboarding aims to simplify UPI ID creation, fostering digital payment adoption. Initially available to account holders of participating banks, this feature anticipates expansion to include more banks in the near future. Google Pay's initiative with Aadhaar promises to significantly enhance financial inclusion, extending UPI services to a wider demographic.

QR Codes for Offline Payments:

The introduction of QR codes for UPI IDs has revolutionized how offline merchants handle payments. Displayed prominently at sales points, these QR codes streamline transactions and reduce reliance on cash. Customers simply scan the QR code using a compatible mobile app, facilitating quick and secure payments. This technological leap not only simplifies the offline payment process but also enhances security by eliminating manual data entry. From street vendors to larger businesses, QR codes have become a game-changer, ensuring a smooth, cashless payment experience.

Transacting without UPI PIN - UPI Lite:

Enter UPI Lite, the 'on-device wallet' introduced by NPCI, enabling swift, small-scale transactions without requiring a UPI PIN. Tailored for frequent small payments, UPI Lite stands out for its convenience and flexibility. Users can close their accounts at their discretion, and seamless fund transfers from the Lite account to a bank account are made effortless with a single click, free of charge. NPCI's UPI Lite redefines convenience in the world of digital transactions, catering to those who prioritize ease in their financial dealings.


The Components in UPI Universe

Within the UPI ecosystem, key stakeholders play distinct roles, fostering the seamless flow of digital transactions:

Banks:

At the core of UPI functionality, banks directly engage with user accounts to facilitate money transfers. The bank responsible for creating the Virtual Payment Address (VPA) is known as the Issuer Bank, while the one handling VPA transactions is termed the Acquirer Bank. This dual role ensures a smooth and secure process for sending and receiving funds through UPI.

NPCI (National Payments Corporation of India):

Established by the Government of India to advance digital payments, the NPCI oversees various payment schemes in the country, including BBPS and FASTag. Operating the UPI Switch, the NPCI acts as the vital intermediary, facilitating communication between issuer and acquirer banks. It ensures the efficient flow of data, contributing to the robust functioning of the UPI ecosystem.

UPI Apps:

Two distinct entities contribute to the development and operation of UPI Apps:

  • Banks: Traditional banking institutions, such as Kotak Mahindra Bank and HDFC Bank, actively participate in crafting and managing UPI Apps.
  • Fintech Companies: Innovative fintech entities like Google Pay and PhonePe also engage in creating and operating UPI Apps. As only banks have the authority to generate VPAs, fintech companies or Payment Service Providers (PSPs) typically collaborate with banks to offer UPI Apps. The NPCI ensures the accurate routing of data between these banks and payment apps, contributing to a secure and efficient UPI experience.

In this collaborative ecosystem, each stakeholder plays a crucial role, contributing to the success and widespread adoption of UPI as a dynamic digital payment platform.

UPI Transaction Flow

UPI transaction flow unveils a dynamic process shaped by various stakeholders. As we explore the payment journey involving multiple entities, let's break down the steps for both PUSH and PULL transactions:

PUSH Transactions:

Initiation:

  • The Payment Apps User kicks off the payment process, providing recipient details and transfer amount within their app.
  • The payment request is transmitted to the Payment Service Provider (PSP), subsequently forwarded to the NPCI.
  • The issuing bank (sender's bank) scrutinizes transaction authenticity, considering factors like customer details and account balance.
  • Once authorized, the issuing bank generates a digital signature for the transaction.

Fund Transfer:

  • The UPI Switch verifies the transaction using the issuing bank's details, ensuring fund availability.
  • If the sender's account has sufficient funds, UPI deducts the amount, transferring funds to the receiver's bank.
  • The receiving bank credits the funds to the payee's account.
  • A notification confirming the successful transfer, along with a transaction ID, is sent to the sender's app for reference.


PULL Transactions:

Initiation:

  • The person receiving money initiates a payment request through their UPI app, providing necessary details.
  • The payment request travels from the receiver's app to UPI, signaling the intent to pull funds from the payer.

Fund Transfer:

  • The payment request is transmitted from the creditor's bank to the debtor's bank via UPI.
  • The debtor's bank verifies the request and checks for fund availability.
  • Upon confirmation of sufficient funds, the NPCI is notified, deducting the amount from the debtor's bank and updating the receiver's bank.

Settlements:

Navigating the settlements phase in the UPI journey introduces a unique complexity. As no physical money changes hands between banks, the NPCI takes charge of settling every transaction on the UPI network. Multiple banks within the UPI network, holding accounts with the RBI, undergo periodic bulk settlements. Based on these settlement files, individual banks internally calculate the owed amounts or claims. Once settlements are complete, the RBI updates the overarching ledger for all banks in the UPI network. This intricate process ensures a secure, authorized, and seamless UPI experience, underscoring the collaborative efforts of stakeholders in reshaping digital transactions.

How to start using UPI?

To begin using UPI ensure the following prerequisites are in place:

  • Utilize a smartphone equipped with an operating system that supports UPI applications.
  • Hold an active bank account with a financial institution offering UPI services.
  • Verify your mobile number by linking it to your bank account.
  • Make sure you have a stable internet connection for UPI to work well.

Once these prerequisites are met, proceed with the subsequent steps:

  • Select and install a UPI-enabled application from your smartphone's app store.
  • Register on the application using the mobile number linked to your bank account.
  • After verifying the One-Time Password (OTP) sent to your mobile number, establish a secure 4-digit or 6-digit Personal Identification Number (PIN) for future transactions within the app.
  • Create a Virtual Payment Address (VPA) and seamlessly link your bank account(s) to it. It's noteworthy that multiple accounts can be linked to the same VPA.
  • To initiate your inaugural transaction, input the recipient's phone number into your payment app, enter the designated PIN, and voilà – your transaction is complete.

With these steps, you're set to navigate the world of UPI, enjoying the convenience and efficiency of digital transactions at your fingertips.


What are the Benefits of UPI?

  1. Effortless Transactions: Bid farewell to the hassle of entering cumbersome account details. With UPI, money transfers become a breeze, requiring just a few taps. Complex account numbers are no longer a burden as transactions are simplified for a seamless experience.
  2. 24/7 Accessibility: UPI empowers users with the flexibility to make transactions round the clock, irrespective of the time or location. Whether it's the dead of night or the crack of dawn, your money remains readily accessible at your fingertips.
  3. Instant Gratification: Experience the VIP lane of digital payments with UPI – lightning-fast transactions and instant notifications. The efficiency of UPI ensures that your transactions are not only quick but also instantly gratifying, providing a swift and rewarding payment experience.

How Secure is UPI?

Backed by stringent regulations set by the Reserve Bank of India (RBI) and robust safety protocols, UPI stands out as a secure choice for both businesses and individuals.

2-Factor Authentication:

UPI prioritizes transaction security through a robust Two-Factor Authentication (2FA) system. Users must authenticate transactions by entering their exclusive Mobile Personal Identification Number (MPIN). Going the extra mile, UPI enhances security by incorporating biometric authentication, utilizing features like fingerprint or iris recognition, fortifying the payment process and minimizing the risk of unauthorized access and fraudulent activities.

Transaction Encryption:

Since its inception in 2016, UPI has implemented cutting-edge encryption protocols to safeguard sensitive information. This commitment ensures that data remains confidential and secure throughout its transmission, maintaining an uncompromised level of security.

Enhanced Security Measures:

The Virtual Payment Address (VPA) serves as a unique identifier for UPI transactions, eliminating the need to share sensitive bank account details and reducing the risk of information exposure. Furthermore, UPI-enabled applications are often bound to specific devices, preventing unauthorized access from different devices and adding an extra layer of security.


UPI 2.0: Elevating Digital Payments

Revolutionizing digital payments, UPI 2.0 introduces a host of enhanced features, redefining the user experience across India. Among its standout elements is the 'Overdraft Facility,' enabling users to seamlessly link their overdraft accounts to UPI. This ensures uninterrupted transactions, even in the face of insufficient funds, providing a safety net for essential payments. Upping the ante, UPI 2.0 introduces 'Invoice in the Inbox,' streamlining invoice receipt and review directly within the UPI app. A boon for businesses and individuals, this feature simplifies financial record management. Beyond these additions, UPI 2.0 maintains its hallmark traits – lightning-fast, 24/7 transactions. Introducing an extra layer of security with 'Signed Intent and QR,' users can digitally sign their transaction intent, enhancing authenticity verification and mitigating fraud risks. Enhancing the shopping experience, UPI 2.0 introduces the 'One-Time Mandate.' This feature facilitates seamless authorization for recurring payments, catering to subscription services, utility bills, and loan repayments. In a digitally driven era, UPI 2.0 underscores India's commitment to a secure, efficient, and user-friendly financial ecosystem.

UPI Lite: Simplifying Digital Transactions for All

Meet UPI Lite, a simplified and user-friendly iteration of the Unified Payments Interface, designed to cater to a diverse user base across India. Its standout feature lies in its simplicity, ensuring that digital payments are accessible to individuals with varying levels of technological proficiency. Beyond simplicity, UPI Lite boasts versatility, supporting a myriad of transactions – from person-to-person transfers to bill payments and online shopping. This streamlined approach eliminates the need for multiple apps or intricate procedures, allowing users to effortlessly manage utility bills, recharge mobile phones, or shop online. Crucially, UPI Lite maintains the robust security standards of its full-fledged counterpart, safeguarding users' financial data and transactions. Bridging the digital divide, UPI Lite ensures that whether you're a tech-savvy urban resident or someone from a remote village, digital payments become an inclusive and efficient experience for all.

Revolutionizing Recurring Payments with UPI ID Autopay

Discover the simplicity and convenience of UPI Autopay, a seamless feature within the Unified Payments Interface (UPI) system, widely embraced in India for its digital transaction prowess. UPI Autopay transforms the landscape of recurring payments, offering an effortless solution for monthly bills, subscriptions, and EMIs (Equated Monthly Installments). Empowering users to set up recurring payments with ease, UPI Autopay operates like a digital guardian, ensuring that the specified amount is automatically debited from your bank account on the scheduled date. Bid farewell to the manual hassle of making payments each time, as Autopay streamlines the process for you. Benefiting from the UPI platform, UPI Autopay exempts users from transaction charges, presenting a cost-effective solution for managing financial commitments. Moreover, being on the UPI platform significantly minimizes the probability of transaction failures, providing a near-zero failure rate.


UPI for Businesses

In navigating today's digital landscape, understanding why businesses should embrace UPI becomes paramount. As India's unrivaled champion of payment instruments, UPI's simplicity and widespread adoption have transformed the way transactions are conducted. The ease of pulling out a phone, scanning a QR code, and making a payment has contributed to UPI's stratospheric growth. Businesses can harness the power of UPI through two primary flows: UPI Collect and UPI Intent. While the UPI Collect flow is swift, it can be susceptible to human errors as customers manually input their Virtual Payment Address (VPA). In contrast, UPI Intent eliminates the need for a VPA or QR code, facilitating a seamless App-to-App switch. This not only reduces errors but also enhances visibility over the transaction funnel. In addition to these flows, businesses can leverage In-App UPI payments, delivering exceptional customer experiences, higher conversion rates, and valuable customer insights. The utilization of QR codes, both static and dynamic, further simplifies the payment process. While UPI's impressive success rates make it an attractive choice for businesses, optimizing UPI Collect and UPI Intent flows can elevate these rates, ensuring smoother transactions and delighted customers.

Benefits of UPI for Businesses:

  • Rapid Settlement: UPI's rapid settlement cycles empower businesses to maintain better cash flow, providing a significant advantage, particularly for early-stage and cash-intensive enterprises.
  • Customer Satisfaction: UPI doesn't solely benefit merchants; it also contributes to customer satisfaction. The convenience and speed of UPI transactions leave customers content, increasing the likelihood of their return for repeat business.
  • Seamless Integration: UPI facilitates seamless integration for developers and tech-savvy merchants, allowing a smooth connection of UPI services to online stores and apps. Payment gateways and platforms offer APIs that streamline the integration process.
  • Reduced Transaction Costs: Businesses leveraging UPI enjoy reduced transaction costs compared to other payment modes such as credit cards, debit cards, and net banking, enhancing overall cost-effectiveness.

As UPI's platform evolves, it continues to support a diverse range of use cases, presenting businesses with endless possibilities for innovation and growth such as

  • E-commerce
  • Education/ Edtechs
  • Software/ IT
  • Retail
  • Logistics
  • Insurance
  • Travel
  • Utilities
  • Non-profit organisations


Businesses with ZOOP UPI Verification API

In the dynamic landscape of digital transactions, ZOOP's UPI Verification API emerges as a pivotal tool, revolutionizing the way businesses operate in the online sphere. This innovative API is designed to streamline and fortify the UPI verification process, offering a seamless and secure experience for both businesses and their customers.

Key Features and Benefits:

  1. Effortless UPI Verification: ZOOP's UPI Verification API simplifies the UPI verification process, making it quick and hassle-free for businesses. It ensures that businesses can effortlessly authenticate users through their UPI credentials, enhancing the overall user experience.
  2. Enhanced Security Measures: Security is paramount in the digital realm, and ZOOP understands this well. The UPI Verification API incorporates robust security measures, safeguarding sensitive user information during the verification process. This commitment to security instills confidence in businesses and users alike.
  3. Seamless Integration: Integration into existing business systems is seamless with ZOOP's UPI Verification API. Businesses can easily incorporate this tool into their applications or platforms, ensuring a smooth and cohesive experience for both the business and its customers.
  4. Real-Time Verification: In the fast-paced world of digital transactions, real-time verification is essential. ZOOP's API operates with efficiency, providing businesses with real-time UPI verification capabilities. This ensures that transactions can proceed swiftly, contributing to a positive user experience.
  5. Customizable Solutions: Recognizing the diverse needs of businesses, ZOOP offers customizable solutions through its UPI Verification API. Whether a business requires specific features, branding, or integration options, the API can be tailored to meet these unique requirements.
  6. Enhanced User Trust: By implementing a robust UPI verification process, businesses utilizing ZOOP's API build trust with their users. This trust is foundational for customer retention, as users feel confident in the security and reliability of the business's digital transactions.

In conclusion, ZOOP's UPI Verification API stands as a catalyst for businesses seeking to optimize their digital transaction processes. With its user-friendly design, stringent security measures, and customizable features, the API not only meets the current demands of the digital landscape but also propels businesses toward a future of seamless and secure online transactions.

Fintech
Digital Banking
Open Banking
API Integration
man
ZOOP Team
02 January 2025
19 min read
Technology & Innovation(+3)
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