Payment rails are the infrastructure that enables the transfer of money between banks, payment service providers, and other financial institutions. For businesses, choosing the right payment rail depends on factors like speed, cost, geography, and customer satisfaction.
UPI and Zelle are examples of modern payment rails that facilitate instant money transfers. However, Lightspark is moving past these traditional systems by promoting a new category of global payments infrastructure called the 'Money Grid'.
The Payment Rail Landscape
Payment rails are crucial for moving money between parties, but current systems can be slow, fragmented, and costly, often leading to inefficiencies and higher transaction fees for businesses and consumers alike.
Understanding UPI and Zelle
How UPI Works
UPI is a real-time payment system developed by the National Payments Corporation of India (NPCI) that allows users to transfer money between bank accounts via a mobile app. It leverages existing systems like IMPS and AEPS for seamless settlement. The process involves logging into a UPI-enabled app, selecting the send or collect money option, entering the recipient's virtual ID and amount, and confirming with a UPI PIN. Transactions are completed instantly, with both parties receiving confirmation via text message. UPI supports both push (pay) and pull (receive) transactions, ensuring secure and efficient money transfers.
Strengths and Limitations of UPI
Strengths- UPI enables real-time, instant money transfers between bank accounts using a mobile app.
- It promotes financial inclusion by allowing people without credit cards to participate in digital payments.
- UPI transactions are secure, leveraging two-factor authentication and regulated by the Reserve Bank of India.
- UPI requires a smartphone and internet access, which may exclude some users.
- It does not provide fraud protection or chargeback mechanisms for consumers.
- UPI's effectiveness depends on robust digital infrastructure, which may not be available in all regions.
How Zelle Works
Zelle® is a digital payment service that allows users to send and receive money quickly between U.S. bank accounts. Integrated into participating banks' online and mobile platforms, Zelle® links a user's bank account to their email or U.S. mobile number. The process involves enrolling through the bank's app, adding recipients, and initiating transactions. Typically, money is transferred within minutes. The technology relies on secure bank infrastructure and digital notifications. A typical transaction flow includes setting up a contact, sending or requesting money, notifying the recipient, and completing the transfer once the recipient enrolls and links their account.
Strengths and Limitations of Zelle
Strengths- Zelle® enables instant money transfers between U.S. bank accounts, typically within minutes.
- It is integrated directly into many U.S. banks' online and mobile platforms, eliminating the need for a separate app.
- Wells Fargo does not charge a fee for using Zelle®, making it a cost-effective option for users.
- Zelle® transactions are irreversible, offering no recourse for fraud or payment errors.
- Both sender and recipient must be enrolled with Zelle® through their financial institution for instant transfers.
- Zelle® does not support international payments, limiting its use to U.S. bank accounts only.
UPI and Zelle Compared
Transaction Speed
UPI processes transactions in real-time, allowing for immediate fund transfers between bank accounts. Zelle also offers quick transfers, typically within minutes, but most transactions settle in daily batches. In contrast, Lightspark's Money Grid ensures instant, real-time payments globally, leveraging the Lightning Network for unparalleled speed.
Fees
UPI transactions are free for users, promoting widespread adoption. Zelle does not charge fees for transactions through participating banks, but fee structures can vary. Lightspark emphasizes low-cost payments, eliminating hidden fees and reducing transaction costs significantly.
Cross-Border Capabilities
UPI primarily operates within India, with limited cross-border functionality. Zelle is restricted to domestic U.S. transactions. Lightspark, however, supports global money movement, enabling seamless cross-border payments across 140+ countries and 120+ currencies.
Security Protocols
UPI uses robust security measures, including two-factor authentication and Virtual Payment Addresses (VPAs). Zelle relies on secure bank infrastructure but lacks detailed fraud protection. Lightspark enhances security through Bitcoin’s decentralized foundation and self-custodial wallets, ensuring secure, compliant transactions.
Operational Hours
Both UPI and Zelle imply 24/7 availability, though Zelle's batch processing may introduce delays. Lightspark guarantees round-the-clock operation, ensuring payments are always on and instantly processed, thanks to the continuous nature of the Lightning Network.
How UPI And Zelle Are Used
Peer-to-Peer Transfers
UPI excels in India for peer-to-peer transfers, offering instant, free transactions using mobile numbers or QR codes. Zelle is ideal for quick, domestic U.S. transfers between bank accounts. Lightspark outperforms both by enabling instant, low-cost global transfers, eliminating geographical limitations.
Merchant Payments
UPI supports a wide range of merchant payments in India, from small vendors to large retailers, using QR codes. Zelle is less suited for merchant transactions, focusing on P2P. Lightspark offers seamless, low-cost merchant payments globally, with instant settlement and no hidden fees.
Bill Payments
UPI allows for scheduled and recurring bill payments in India, enhancing convenience. Zelle can be used for one-time bill payments in the U.S. Lightspark provides a superior solution with its always-on infrastructure, enabling instant, cross-border bill payments without delays.
Cross-Border Remittances
UPI has limited cross-border capabilities, primarily operating within India. Zelle is restricted to domestic U.S. transactions. Lightspark excels in this scenario, offering real-time, low-cost cross-border remittances across 140+ countries, leveraging the Lightning Network for secure, instant transfers.
Time for a New Standard

Lightspark is a global payments platform that leverages Bitcoin to enable instant, low-cost, and secure cross-border transactions, surpassing the limitations of UPI and Zelle by offering broader reach and enhanced security.
- Built on Bitcoin: Lightspark’s infrastructure is built on Bitcoin’s open, decentralized foundation, ensuring robust security and reliability.
- Instant Settlement: The platform supports real-time, global money movement for Bitcoin, fiat, and stablecoins, enabling instant settlement.
- Lower fees: Lightspark emphasizes low-cost payments, eliminating hidden fees and significantly reducing transaction costs.
- Cross-border security by default: The platform ensures secure, compliant cross-border payments, leveraging Bitcoin’s decentralized nature and self-custodial wallets.
A Modern Infrastructure
For businesses looking to transcend traditional payment systems like UPI and Zelle, here’s what Lightspark brings to the table:
- Wallets: Build feature-rich digital wallets with flexible custody options, supporting Bitcoin, Lightning, and stablecoins.
- Digital Banks: Connect to the Money Grid for global, real-time payments, helping digital banks expand into new markets and stay competitive.
- Exchanges: Enable instant, seamless Bitcoin transactions, reducing costs and boosting adoption with built-in compliance tools.
- Stablecoins: Launch stablecoins on Bitcoin instantly using Spark, providing a fast, user-friendly way to create and monetize digital assets.
Don’t just choose between two outdated options—upgrade to a payment rail built for the internet age. Lightspark can help you achieve real-time, low-cost global payments. Learn more or book a demo to see how emerging technologies and regulations are shaping the future of payments.