| Term | Full Form / Meaning | UPSC Significance |
|---|---|---|
| UPI | Unified Payments Interface — real-time mobile payment system enabling instant inter-bank transfers 24×7 | Developed by NPCI; launched April 2016; operational from August 2016 |
| NPI | National Payments Interface — Nepal's equivalent fast-payment system operated by NCHL | Counterpart to UPI in Nepal; enables domestic instant payments |
| P2P | Person-to-Person — direct fund transfer between two individuals | Contrast with P2M (Person-to-Merchant); the Nepal linkage is P2P only |
| P2M | Person-to-Merchant — payments from customer to a business or shop | 86% of UPI P2M transactions are below ₹500 |
| VPA | Virtual Payment Address — alias (e.g. name@bank) used instead of bank account number | Core security feature; eliminates sharing of sensitive bank details |
| UPI ID | User's unique payment identifier linked to their bank account | Can be mobile number, Aadhaar, or custom VPA |
| IMPS | Immediate Payment Service — real-time payment system that UPI is built upon | Pre-UPI; UPI = advanced version of IMPS + Aadhaar Enabled Payment System (AEPS) |
UPI operates on a 3-tier architecture designed by NPCI:
| Tier | Actor | Role |
|---|---|---|
| Tier 1 — Public Rails | NPCI (Central Switch) | Routes payment messages; handles switching, clearing & settlement; maintains Central Mapped Repository of payer/payee credentials |
| Tier 2 — Banks | 200+ banks connected to UPI | Hold user funds; debit/credit accounts; act as Issuer Bank (payer) or Acquirer Bank (payee) |
| Tier 3 — Fintech Layer | PhonePe, Google Pay, BHIM, Paytm, etc. | Front-end apps; interface with users; communicate with Tier 2 banks; PSP (Payment Service Provider) role |
User → UPI App → NPCI Switch → Payer Bank (debit) → NPCI Switch → Payee Bank (credit) → User
For cross-border UPI–NPI: Indian User → UPI App → NPCI/NIPL → NCHL (Nepal) → NPI → Nepalese Beneficiary Bank → Recipient
UPI is built on ISO 20022 messaging standards and uses open API architecture, enabling any bank or fintech to build on top of it. NPCI's Central Switch is the "heart" of UPI — routing every single transaction.
| Body | Full Form | Nature | Key Role | Est. |
|---|---|---|---|---|
| NPCI | National Payments Corporation of India | Section 8 (Not-for-Profit); RBI + IBA initiative | Umbrella org for all retail payment systems in India; operates UPI, RuPay, IMPS, FASTag, AePS, NACH | 2008 |
| NIPL | NPCI International Payments Limited | Wholly-owned subsidiary of NPCI | International arm of NPCI; deploys UPI globally; signed MoU with NCHL for UPI–NPI linkage | April 2020 |
| RBI | Reserve Bank of India | Central Bank; statutory body | Regulator & supervisor of NPCI under PSS Act 2007; issues Payments Vision documents | 1935 |
| IBA | Indian Banks' Association | Industry body | Co-promoted NPCI with RBI; represents banking sector | 1946 |
| NCHL | Nepal Clearing House Limited | Public limited company; promoted by NRB | Operates NPI, connectIPS, NCHL-IPS, NEPALPAY QR; partnered with NIPL for cross-border linkage | 2008 |
| NRB | Nepal Rastra Bank | Central Bank of Nepal | Regulates NCHL; counterpart of RBI in Nepal | 1956 |
Ten core promoter banks: SBI, PNB, Canara Bank, Bank of Baroda, Union Bank, Bank of India, ICICI Bank, HDFC Bank, Citibank N.A., HSBC. Currently 200+ banks are connected to UPI.
UPSC often asks: "Under which Act was NPCI established?" → Payment and Settlement Systems Act, 2007. NPCI is registered under Section 8 of the Companies Act, 2013 (earlier Section 25 of Companies Act 1956). Also remember: NIPL was incorporated in April 2020 — not at UPI's launch in 2016.
| Product | Function |
|---|---|
| NPI | National Payments Interface — open API platform for instant payments; enables UPI–NPI linkage |
| connectIPS | Inter-bank fund transfer (like NEFT/IMPS in India) |
| NCHL-IPS | Interbank Payment System — real-time gross settlement for Nepal |
| NEPALPAY QR | Interoperable domestic QR scheme (like BharatQR in India) |
| connectRTGS | Nepal's real-time gross settlement system |
| CORPORATEPAY | B2B payment platform for corporates |
UPI grew from 373 transactions in August 2016 to 24,162 crore transactions in FY 2025-26 — an ~12,000-fold increase in a decade. Value grew from ₹0.07 lakh crore to ₹314 lakh crore — a ~4,000-fold rise.
| Period | Monthly Volume | Annual Value | Milestone |
|---|---|---|---|
| Aug 2016 (first month) | 373 transactions | ₹0.07 lakh crore (FY17) | UPI goes live |
| FY 2023-24 | ~1,300–1,500 crore | ~₹200 lakh crore | 37,060 cross-border transactions |
| August 2025 | 2,001 crore | ₹24.85 lakh crore | First month crossing 2,000 crore |
| December 2025 | 2,163 crore | ₹27.97 lakh crore | YoY growth +29% |
| January 2026 | 2,170 crore | — | 81% of all retail digital transactions |
| March 2026 | 2,264 crore | — | All-time monthly high |
| FY 2025-26 (full year) | — | ₹314 lakh crore | ~24,162 crore total transactions |
| Financial Year | Volume | Value | Note |
|---|---|---|---|
| FY 2021-22 | 180 transactions | ~₹3,000 | Nascent stage |
| FY 2022-23 | 144 transactions | ~₹4,000 | Dip (piloting phase) |
| FY 2023-24 | 37,060 | ₹19.70 crore | Sharp jump; Singapore live Feb 2023 |
| FY 2024-25 | 7,55,000+ | ₹258.53 crore | 20× growth in volume |
| FY 2025-26 (Apr–Jul 2025) | 6,01,000 (4 months) | ₹169.29 crore | On pace to exceed FY25 |
The IMF formally acknowledged UPI as the world's largest real-time payment system by transaction volume in its June 2025 report. India processes nearly 49% of global real-time payment transactions — more than the US, China, and Europe combined in some metrics.
PhonePe: 48.3% and Google Pay: 37% together command over 85% of UPI market share. NPCI's proposed 30% market cap rule (no single app to exceed 30% of volume) has faced repeated implementation hurdles.
| Product | What It Does | Key Feature |
|---|---|---|
| BHIM UPI | Government app for UPI; launched Dec 2016 by PM Modi | Stands for Bharat Interface for Money; promotes financial inclusion |
| UPI Lite | Offline UPI wallet for small transactions in low/no-connectivity areas | Balance limit: ₹5,000; no PIN needed for transactions up to ₹500; reduces server load |
| UPI 123PAY | UPI for feature phones (non-smartphone users) | Works on basic phones via IVR, missed call, etc.; expands financial inclusion to rural India |
| UPI AutoPay | Automated recurring payments (subscriptions, EMIs) | Mandate-based; up to ₹1 lakh per transaction; used for Netflix, insurance, SIPs |
| UPI Circle | Full delegation feature — up to 5 secondary users under one primary account | Monthly limit ₹15,000 per secondary user; targets elders, students, family |
| RuPay Credit on UPI | Link credit cards to UPI for payments | Widely adopted in 2026; millions of merchants accepting credit via UPI |
| BharatQR | Interoperable QR code for merchant payments | Works across UPI, Mastercard, Visa, RuPay — single QR for all |
RBI's "Authentication Mechanisms for Digital Payment Transactions Directions, 2025" mandates from April 2026: all domestic digital payments including UPI must use two authentication factors from different categories (PIN + biometric, or device + PIN). SMS OTP alone is no longer sufficient.
| Category | Limit | Note |
|---|---|---|
| Standard P2P transaction | ₹1 lakh per transaction | May vary by bank (some allow higher) |
| Daily transaction cap | 20 UPI transactions per 24 hours | NPCI standard limit |
| UPI Lite wallet balance | ₹5,000 | Per-transaction limit: ₹500 (no PIN) |
| UPI AutoPay | ₹1 lakh per transaction | For recurring mandates |
| UPI Circle (secondary user) | ₹15,000/month | Delegated from primary user |
| Cross-border (Singapore) | SGD 1,000/day | Set by RBI at linkage launch (Feb 2023) |
UPSC has directly asked about how many countries accept UPI internationally. Also remember: Zero MDR (Merchant Discount Rate) on UPI transactions — government mandates this for P2P and P2M. However, this is controversial as PSPs and banks have no revenue model from UPI.
| Country | Local Payment System | Year of Link | Type | Key Detail |
|---|---|---|---|---|
| Bhutan | BHIM UPI / Bhutan QR | July 2021 | Merchant (P2M) | First country globally to accept UPI; via BHIM app |
| Singapore | PayNow (MAS) | February 2023 | P2P + P2M | First cross-border P2P link globally; launched by RBI Gov + MAS MD; PM Modi + Lee Hsien Loong present |
| UAE | UAEFTS / Merchants | 2022 onwards | P2M (merchants) | Large Indian expat population; Dubai + Abu Dhabi retail |
| France | Local merchants | 2023 | P2M (tourists) | Extended to Indian tourists via NIPL partnerships |
| Mauritius | Local banking network | 2021 | P2M | Small but early adopter; large Indian diaspora |
| Sri Lanka | LankaPay | 2023 | P2M | Post-crisis financial integration; Indian tourists |
| Nepal | NPI (NCHL) | June 2026 | P2P (cross-border remittance) | MoU June 2023; launched by Jaishankar–Khanal; via mobile/VPA/UPI ID |
| EU (Planned) | TIPS (ECB/Eurosystem) | Announced Nov 2025 | Remittance | UPI–TIPS interlinkage; realisation phase started; RBI + ECB collaboration |
Project Nexus (BIS initiative) aims to connect multiple domestic Fast Payment Systems (FPS) into a multilateral cross-border network. India is a founding member along with Malaysia, Philippines, Singapore, and Thailand. Indonesia is an observer. Expected to go live by 2026–27. Addresses the limitation of bilateral-only corridors.
NRIs in Australia, Canada, France, Hong Kong, Malaysia, Oman, Qatar, Saudi Arabia, Singapore, UAE, UK, USA can use UPI for INR transactions in India via their registered overseas mobile numbers (linked to Indian bank accounts).
UPSC directly asked: "Which countries accept UPI international merchant payments?" Answer (as of early 2026): UAE, France, Singapore, Bhutan, Mauritius, Nepal, Sri Lanka (7 countries for merchant; Singapore + Nepal for full P2P cross-border). Nepal appears in both lists — merchant acceptance pre-existed, but the P2P remittance linkage is the new 2026 development.
| Act / Regulation | Year | Relevance to UPI |
|---|---|---|
| Payment and Settlement Systems Act (PSS Act) PSS Act | 2007 | Primary statute governing all payment systems in India including UPI; NPCI was established under this Act's provisions; gives RBI authority to regulate and supervise payment systems |
| Reserve Bank of India Act RBI Act | 1934 (amended) | Grants RBI power as regulator of monetary policy and payment infrastructure; legal basis for RBI's Payments Vision documents |
| Foreign Exchange Management Act (FEMA) FEMA | 1999 | Governs cross-border UPI transactions; LRS (Liberalised Remittance Scheme) limit of USD 2,50,000/year applies to UPI Global transactions by resident individuals; inward remittances under FEMA |
| Companies Act | 2013 (Section 8) | NPCI registered as Section 8 (Not-for-Profit) company — earlier under Section 25 of Companies Act 1956 |
| Digital Personal Data Protection Act DPDP Act | 2023 | Governs data handling in UPI transactions; rules scheduled for full effect by May 2027; currently SPDI Rules 2011 apply |
| Information Technology Act | 2000 (amended 2008) | Provides legal validity to electronic payments and digital signatures; SPDI Rules under this Act govern payment data security |
| Document | Year | Key Mandate |
|---|---|---|
| Payments Vision 2019–21 | 2019 | Launched digital payments push; aligned with G20 financial inclusion goals |
| Payments Vision 2025 | 2022 | Roadmap for UPI global expansion; outlined cross-border linkage strategy |
| Payments Vision 2028 | March 2026 | Strategic roadmap: ease of cross-border fund transfers; regulatory liberalisation; single-window authorised person licenses |
| Authentication Directions 2025 | 2025 | From April 2026: two-factor authentication from different categories mandatory for all digital payments |
| Data Storage Directive | June 2019 | Payment data of Indian users must be stored only in India ("data localisation") |
The UPI–NPI linkage, UPI–PayNow linkage, and Project Nexus all align with the G20 Roadmap for Enhancing Cross-Border Payments, which targets: faster (near-instant), cheaper (under 3% cost), more transparent, and more accessible cross-border payments globally. India held G20 Presidency in 2023 and made digital payments a key deliverable.
Trap: "NPCI is a statutory body" — FALSE. NPCI is a Section 8 company (not-for-profit), not a statutory body. It was set up under PSS Act 2007 but is registered under Companies Act. RBI is the statutory regulator; NPCI is the operational entity. Also: NPCI does not directly interface with users — it operates through Tier 2 banks and Tier 3 PSP apps.
Nepal is a Landlocked Himalayan nation sharing a ~1,850 km open border with India. The relationship is governed by the 1950 Treaty of Peace and Friendship. Nepal is designated a priority partner under India's Neighbourhood First Policy.
| Date | Event | Significance |
|---|---|---|
| June 2023 | NCHL–NIPL MoU signed in New Delhi | Formal commitment to develop UPI–NPI P2P linkage; blueprint for cross-border remittance corridor |
| June 5–7, 2026 | Nepal FM Shisir Khanal visits India; meets EAM S Jaishankar | First FM-level visit since new Nepal government (March 2026); 3-day "fruitful" visit |
| June 6, 2026 | UPI–NPI P2P linkage jointly launched by Jaishankar & Khanal | Operationalises June 2023 MoU; real-time remittances between India and Nepal activated |
| June 6, 2026 | Digital India Bhashini–Kathmandu University MoU | Co-creating national digital infrastructure for "Voice First" Language Translation platform for Nepal; AI cooperation |
| June 7, 2026 | India hands over 72 health facilities + 12 cultural heritage projects to Nepal | Post-2015 earthquake reconstruction assistance; strengthens people-to-people ties |
| June 7, 2026 | Nepal FM meets NSA Ajit Doval | Security and cross-border crime cooperation discussed |
| June 9, 2026 | UPI–NPI linkage goes live via select banks | NIPL officially announces operationalisation; expansion to more banks planned in phases |
| Dimension | Key Data / Context |
|---|---|
| Nepali workers in India | ~40.6% of Nepal's remitters live in India (2023 data); millions work in construction, hospitality, security sectors |
| Nepal remittances as % of GDP | ~24–26% of GDP — one of the highest globally; remittances = lifeline of Nepal economy |
| Old system | Cash-based; hawala; costly bank wires; high remittance fees (~5–6% global average) |
| New UPI–NPI system | Real-time; low-cost; secure; no bank details needed; mobile number / VPA sufficient |
| Bidirectional nature | Indians can send to Nepal using VPA/mobile; Nepalis in India can send to Nepal; Nepalese users can send to India using UPI IDs |
| Open border benefit | The India–Nepal open border means millions of Nepalis live/work in India without formal migration status — UPI–NPI enables formal digital financial channels for this population |
The India–Nepal Mutual Legal Assistance Agreement in criminal matters was also activated during the June 2026 FM visit — improving cooperation in cross-border crime investigations. This is distinct from the UPI–NPI linkage but part of the same bilateral basket.
UPI–NPI P2P Cross-Border Linkage Goes Live: NPCI International Payments Limited (NIPL) and Nepal Clearing House Ltd. (NCHL) formally operationalised the UPI–NPI cross-border remittance linkage on June 9, 2026. The service is currently live through select banks and will be expanded in phases. Users can transact using mobile numbers, VPAs, or UPI IDs — no bank details required. Ritesh Shukla, MD & CEO of NPCI International, called it a "low-cost corridor promoting digital financial inclusion."
Jaishankar–Khanal FM Meeting: Nepal FM Shisir Khanal visited India (June 5–7, 2026) — first FM-level visit since Nepal's new government took office in March 2026. The visit reviewed bilateral ties covering development, connectivity, trade, energy, and digital cooperation. Alongside the UPI–NPI launch, an MoU between Digital India Bhashini and Kathmandu University was signed for a voice-first language translation platform. India also handed over 72 health facilities and 12 cultural heritage projects under post-earthquake reconstruction aid. Nepal called India its "most important partner."
UPI Completes 10 Years: UPI celebrated its decennial with record statistics — 24,162 crore transactions in FY 2025-26, up from 373 in its first month. All-time monthly high: 2,264 crore transactions in March 2026. The IMF acknowledged UPI as the world's largest real-time payment system in June 2025. India handles 49% of global real-time payment volume. UPI is now live in 8+ countries.
RBI Payments Vision 2028: Released in March 2026, the new strategic roadmap for India's payments ecosystem emphasises ease of cross-border fund transfers, regulatory liberalisation, and single-window applications for authorised person licenses. As of February 2026, UPI is live in over 8 countries with 23+ MoUs signed with countries for Digital Public Infrastructure (DPI) cooperation.
UPI–TIPS Interlinkage Announced: RBI and NPCI International announced an agreement with the European Central Bank to connect UPI with TARGET Instant Payment Settlement (TIPS) — the Eurosystem's instant payment network. Both sides entered the realisation phase for technical integration, risk management, and settlement arrangements. This will enable cross-border remittances between India and the EU.
Cross-Border UPI Transactions 20× Growth: Cross-border UPI volumes surged from 37,060 in FY24 to over 7,55,000 in FY25 — a 20-fold increase in volume. Value rose from ₹19.70 crore to ₹258.53 crore (13-fold). First 4 months of FY26 already recorded 6,01,000 transactions worth ₹169.29 crore — on track to exceed FY25 levels.
New Authentication Rules Live: From April 1, 2026, all digital payments including UPI mandatorily require two-factor authentication from different categories (not just SMS OTP). Banks and UPI apps must now integrate biometrics, secure in-app approvals, or dynamic tokens. This aims to reduce fraud linked to static UPI PINs.
The June 2026 UPI–NPI launch is highly likely to appear in UPSC Prelims 2027 as a current affairs question on: (a) Which Indian body partnered with Nepal? (b) What does NPI stand for? (c) Under which India foreign policy does Nepal cooperation fall? (d) What is the UPI–NPI linkage type — P2P or P2M? Always state: NIPL + NCHL · NPI = National Payments Interface · Neighbourhood First · P2P.
| Statement | True / False | Reason |
|---|---|---|
| NPCI is a statutory body established directly by the Government of India. | ❌ False | NPCI is a Section 8 company (not-for-profit) incorporated under the Companies Act, established by RBI and IBA. It is NOT a statutory body — no Act of Parliament directly created it. |
| Bhutan was the first country to accept UPI payments internationally. | ✅ True | Bhutan became the first in July 2021 via BHIM App for merchant (P2M) transactions. |
| The UPI–PayNow linkage was the world's first cross-border P2P link between two fast payment systems. | ✅ True | Launched February 21, 2023; described as the world's first bilateral cross-border P2P linkage between fast payment systems. NIPL and Banking Computer Services Pte Ltd (Singapore) partnered for this. |
| NIPL (NPCI International) was established at the same time as UPI in 2016. | ❌ False | NIPL was incorporated in April 2020 — four years after UPI launched in 2016. |
| The UPI–NPI linkage was launched during the visit of Nepal's Finance Minister to India in June 2026. | ❌ False | It was Nepal's Foreign Minister Shisir Khanal, not Finance Minister, who visited India (June 5–7, 2026) and jointly launched the linkage with EAM S. Jaishankar. |
| NPI (National Payments Interface) is operated by Nepal Rastra Bank. | ❌ False | NPI is operated by Nepal Clearing House Limited (NCHL). Nepal Rastra Bank (NRB) is the promoter/regulator of NCHL, not its operator. |
| Cross-border UPI transactions by Indian residents are exempt from the LRS (Liberalised Remittance Scheme) limit. | ❌ False | UPI Global transactions fall under the LRS limit of USD 2,50,000 per financial year for resident individuals under FEMA. |
| UPI accounts for nearly 49% of global real-time payment transactions as acknowledged by the IMF. | ✅ True | IMF acknowledged this in its June 2025 report — India processes ~49% of global real-time payment volume. |
Students confuse NPCI as a "RBI body" or "government department." It is neither. NPCI is a privately incorporated Section 8 company promoted by RBI and IBA. RBI is the regulator of NPCI but does not directly own or run it. NPCI owns UPI, RuPay, IMPS — not RBI directly.
Two separate records: Bhutan (July 2021) = first country to accept UPI internationally (P2M merchants). Singapore (February 2023) = first cross-border P2P linkage between two fast payment systems globally. The question says "first country" → Bhutan. "First P2P cross-border" → Singapore.
NCHL operates NPI; NRB (Nepal Rastra Bank) promotes/regulates NCHL. The MoU for UPI–NPI was signed between NIPL (India) and NCHL (Nepal) — not between RBI and NRB. Students often confuse the central bank with the clearing house.
UPI had some presence in Nepal for merchant (P2M) payments before June 2026 (it appears in some lists of UPI-accepting countries for merchants). The June 2026 development is specifically the P2P remittance linkage via NPI — bidirectional, using mobile/VPA/UPI ID. Do not confuse prior merchant acceptance with the new P2P linkage.
Government mandates Zero MDR (Merchant Discount Rate) on UPI for customers. However, UPI is not free for PSPs and banks — they bear infrastructure costs with no direct revenue from UPI transactions. This is the "Zero MDR dilemma" — a key concern for the sustainability of the UPI ecosystem and fintech companies.
In June 2026, it was Nepal's Foreign Minister (FM = Foreign Affairs Minister) Shisir Khanal, not the Finance Minister, who visited India and launched the UPI–NPI linkage. The topic headline says "FM Meeting" referring to Foreign Minister, not Finance Minister. UPSC may test this distinction.
UPI-related questions in Prelims tend to be: (1) statement-based T/F (multiple statements, pick correct ones); (2) pair-matching (country + local payment system); (3) date/order chronological. Prepare: Bhutan 2021 · Singapore Feb 2023 · Nepal June 2026 · PayNow · NPI · TIPS · NPCI/NIPL · PSS Act 2007.
| What | Number / Year |
|---|---|
| PSS Act — governs NPCI / UPI | 2007 |
| NPCI incorporated | 2008 |
| UPI launched (pilot) | April 2016 |
| UPI operational (public) | August 2016 |
| NIPL incorporated | April 2020 |
| Bhutan (first country for UPI) | July 2021 |
| NCHL–NIPL MoU for UPI–NPI | June 2023 |
| Singapore–PayNow P2P link | February 21, 2023 |
| UPI–NPI P2P launch (Nepal) | June 9, 2026 |
| UPI monthly high (March 2026) | 2,264 crore transactions |
| Global real-time payment share | 49% (IMF, 2025) |
| Cross-border growth (FY25) | 20× (37,060 → 7,55,000+) |
| Nepal remittance as % of GDP | ~25–26% |
| Project Nexus founding members | 5 (India + Malaysia + Philippines + Singapore + Thailand) |