JAIIB Paper 2 • Principles & Practices of Banking (PPB) āāāā
Digital Banking
India's payments revolution, fully updated for 2026 ā from UPI crossing 21+ billion monthly transactions to the Digital Rupee's welfare-scheme expansion. This guide covers all 14 sub-topics in expert detail ā NEFT, RTGS, IMPS, UPI, BBPS, AePS, RuPay, NACH, ECS, Digital Wallets, Internet Banking, Mobile Banking, CBDC, and Digital Payment Security ā with 50 exam-style MCQs with hidden answers.
š Updated: September 2026 • 35 min read
š Digital Banking ā At a Glance (2026)
System
Min Amount
Max Amount
Availability
NEFT
ā¹1
No RBI limit
24Ć7 (batch settlement)
RTGS
ā¹2 lakh
No RBI limit
24Ć7 (real-time)
IMPS
ā¹1
ā¹5 lakh
24Ć7 (instant)
UPI (regular)
ā¹1
ā¹1 lakh/day
24Ć7 (instant)
UPI (capital markets/tax/insurance etc.)
ā¹1
ā¹5 lakh/txn, ā¹10 lakh/day
24Ć7 (instant)
Hot for JAIIB 2026: UPI processed 21.63 billion transactions worth ~ā¹28 lakh crore in December 2025 alone (29% YoY growth) ā and RBI's Digital Rupee (CBDC) is now being piloted for welfare/subsidy delivery in Gujarat, Puducherry and Chandigarh.
1 NEFT
National Electronic Funds Transfer (NEFT), operated by RBI, moves funds in half-hourly batches, available 24Ć7 (since December 2019). There is a minimum of ā¹1 and no RBI-imposed maximum ā making it suitable for both small and large transfers where instant settlement isn't essential.
2 RTGS
Real-Time Gross Settlement (RTGS), also operated by RBI, settles each transaction individually and instantly, available 24Ć7 (since December 2020). It has a minimum of ā¹2 lakh ā designed specifically for high-value transfers ā with no RBI-imposed maximum.
3 IMPS
Immediate Payment Service (IMPS), operated by NPCI since November 2010, offers instant, 24Ć7 transfers with no minimum and a maximum of ā¹5 lakh per transaction (raised from ā¹2 lakh in 2021) ā filling the gap between NEFT's batch processing and RTGS's high minimum.
4 UPI
21.63 BillionUPI transactions in December 2025 (29% YoY growth)
Unified Payments Interface (UPI), launched by NPCI in 2016, lets users pay via a Virtual Payment Address (VPA), mobile number, or QR code ā without sharing sensitive bank details ā making it the world's largest real-time retail payment system by volume.
P2P / P2M (regular)
ā¹1 lakh/day
Capital Markets/Tax/Insurance
ā¹10 lakh/day
Since 15 September 2025, NPCI enabled higher limits for specific categories ā capital markets, IPO/mutual funds, education, healthcare, insurance, tax payments, and travel ā allowing up to ā¹5 lakh per transaction and ā¹10 lakh per day, while regular P2P/P2M transfers remain capped at ā¹1 lakh/day.
5 BBPS
Bharat Bill Payment System (BBPS), operated by NPCI, is a centralised, interoperable platform for paying utility, telecom, DTH, education, and other recurring bills through a single interface ā accessible via banks, apps, and BBPS-authorised agents.
6 AePS
Aadhaar-enabled Payment System (AePS) allows customers to perform basic banking transactions ā cash withdrawal, balance enquiry, cash deposit, fund transfer ā using just their Aadhaar number and biometric authentication, without needing a debit card or PIN. AePS is a cornerstone of rural/BC-led financial inclusion.
7 RuPay
RuPay is India's own domestic card payment network, developed by NPCI, offering debit, credit, and prepaid cards as a cost-effective alternative to international networks like Visa/Mastercard ā and forming the backbone of the PMJDY debit card programme.
8 NACH
National Automated Clearing House (NACH), operated by NPCI, is a centralised system for bulk, repetitive transactions ā salary credits, dividend payments, EMI/SIP debits, subsidy disbursements ā replacing the earlier, more fragmented Electronic Clearing Service (ECS).
9 ECS
Electronic Clearing Service (ECS) was the earlier RBI-run mechanism for bulk credit/debit transactions (similar to NACH's current role), operated on a regional basis with less standardisation. ECS has been largely superseded by NACH, which offers pan-India, centralised processing.
10 Digital Wallets
Digital Wallets (Prepaid Payment Instruments, or PPIs) store monetary value for making payments, top-ups, and transfers ā issued by banks or authorised non-bank entities under RBI's Master Direction on PPIs. Examples include mobile wallets, gift cards, and app-based payment balances.
11 Internet Banking
Internet Banking lets customers access accounts, transfer funds, pay bills, and manage investments through a bank's website/web portal ā the original digital banking channel, now supplemented (and often overtaken) by mobile apps.
12 Mobile Banking
Mobile Banking delivers the same core services via a dedicated smartphone app, optimised for on-the-go use with biometric login, push notifications, and integrated UPI/BBPS/bill-pay features ā now the dominant channel for retail digital banking in India.
13 CBDC
19 BanksCurrently offering CBDC (eā¹) wallets
The Central Bank Digital Currency (CBDC), or Digital Rupee (eā¹), is RBI's own digital form of the rupee ā a direct central bank liability, distinct from UPI or bank deposits.
1 Nov 2022Wholesale pilot (eā¹-W) launched, for settlement of government securities transactions.
1 Dec 2022Retail pilot (eā¹-R) launched, using a two-tier model ā RBI issues to banks, banks distribute to customers via wallets.
FY 2025-26Welfare-linked CBDC pilots conducted in Gujarat, Puducherry and Chandigarh for subsidy delivery.
2026-27 (Planned)RBI plans to widen domestic pilots to more DBT/business use cases, plus cross-border CBDC links with Singapore and UAE.
RBI has also developed the Unified Markets Interface (UMI) for tokenising financial assets, using wholesale CBDC for settlement ā with an initial pilot on tokenised certificates of deposit.
JAIIB tip: CBDC remains firmly in the pilot phase as of 2026 ā RBI has not announced a full-scale public launch. Retail e-Rupee adoption remains a small fraction of UPI's massive scale.
14 Digital Payment Security
Tokenisation
Card-on-file tokenisation, mandatory since October 2022, replaces stored card numbers with secure tokens.
Two-Factor Authentication
OTP/PIN-based second-factor verification for online transactions.
Positive Pay System
Pre-verification of high-value cheque details before payment (see our Negotiable Instruments guide).
Fraud Monitoring
Real-time transaction monitoring and anomaly detection across payment rails.
ā Key Takeaways
NEFT: ā¹1 min, no max, batch, 24Ć7. RTGS: ā¹2 lakh min, no max, real-time, 24Ć7. IMPS: no min, ā¹5 lakh max, instant.
UPI: ā¹1 lakh/day regular; up to ā¹5 lakh/txn and ā¹10 lakh/day for capital markets, tax, insurance, education, and healthcare (since Sept 2025).
NACH has largely replaced ECS for bulk/repetitive transactions.
AePS uses Aadhaar + biometrics for basic banking without a card or PIN ā key to rural financial inclusion.
RuPay is India's own domestic card network (NPCI), underpinning PMJDY.
CBDC (eā¹) remains in pilot phase in 2026 ā no full public launch yet, but expanding into welfare/DBT use cases and cross-border pilots.
Digital payment security rests on tokenisation, 2FA, Positive Pay, and continuous fraud monitoring.
š Top 50 JAIIB-Style MCQs on Digital Banking
Test your understanding with these 50 practice MCQs, closely modelled on the pattern expected in the upcoming JAIIB PPB exam ā including combination-answer questions and the very latest UPI/CBDC updates. Each question has 5 options ā the correct answer is hidden by default; tap "Show Answer" to reveal it along with a short explanation.
šø NEFT
1 NEFT settles transactions:
A. In real-time, individually
B. In half-hourly batches
C. Once a month
D. Only on weekends
E. Only for amounts above ā¹2 lakh
Answer: B. NEFT settles in half-hourly batches.
2 NEFT has been available 24Ć7, including holidays, since:
A. 2010
B. December 2019
C. December 2020
D. 2016
E. It has never been 24Ć7
Answer: B. NEFT became 24Ć7 from December 2019.
3 The maximum transfer limit for NEFT, as set by RBI, is:
A. ā¹1 lakh
B. ā¹2 lakh
C. ā¹5 lakh
D. There is no RBI-imposed maximum
E. ā¹10 lakh
Answer: D. NEFT has no RBI-imposed maximum limit.
ā” RTGS
4 The minimum amount for an RTGS transaction is:
A. ā¹1
B. ā¹50,000
C. ā¹1 lakh
D. ā¹2 lakh
E. ā¹5 lakh
Answer: D. RTGS has a ā¹2 lakh minimum.
5 RTGS became available 24Ć7 from:
A. December 2019
B. December 2020
C. 2016
D. 2010
E. It is not 24Ć7 yet
Answer: B. RTGS became 24Ć7 from December 2020.
6 RTGS settles transactions:
A. In batches, similar to NEFT
B. Individually, in real time
C. Once a week
D. Only via NPCI
E. Only for retail customers
Answer: B. RTGS settles each transaction individually, instantly.
š² IMPS
7 IMPS is operated by:
A. RBI directly
B. NPCI
C. SEBI
D. CERSAI
E. FIU-IND
Answer: B. NPCI operates IMPS.
8 The maximum per-transaction limit for IMPS is currently:
A. ā¹1 lakh
B. ā¹2 lakh
C. ā¹5 lakh
D. ā¹10 lakh
E. There is no maximum
Answer: C. The IMPS max is ā¹5 lakh, raised from ā¹2 lakh in 2021.
š± UPI
9 UPI was launched by NPCI in:
A. 2010
B. 2016
C. 2020
D. 2022
E. 2025
Answer: B. UPI was launched in 2016.
10 The standard daily limit for regular UPI P2P/P2M transactions is:
A. ā¹10,000
B. ā¹50,000
C. ā¹1 lakh
D. ā¹5 lakh
E. ā¹10 lakh
Answer: C. The standard UPI daily limit is ā¹1 lakh.
11 Since September 2025, which categories can use higher UPI limits of up to ā¹5 lakh/transaction and ā¹10 lakh/day? (i) Capital markets/IPO (ii) Insurance premiums (iii) Regular P2P transfers between friends
A. (i) only
B. (i) and (ii) only
C. (iii) only
D. All of (i), (ii) and (iii)
E. (ii) and (iii) only
Answer: B. Capital markets and insurance qualify for higher limits; regular P2P does not.
12 In December 2025, UPI processed approximately how many transactions?
A. 2.1 billion
B. 21.63 billion
C. 100 million
D. 500 million
E. 1 trillion
Answer: B. UPI processed 21.63 billion transactions in December 2025.
š§¾ BBPS
13 BBPS is designed for:
A. Only stock market trading
B. Centralised, interoperable payment of utility, telecom, and other recurring bills
C. Only foreign remittances
D. Only large corporate loans
E. Only government bond purchases
Answer: B. BBPS centralises recurring bill payments.
š AePS
14 AePS allows customers to transact using:
A. Only a credit card
B. Aadhaar number and biometric authentication
C. Only a cheque book
D. Only a PAN card
E. Only a passport
Answer: B. AePS uses Aadhaar plus biometrics.
15 AePS is particularly important for:
A. High-frequency stock trading
B. Rural/BC-led financial inclusion, enabling basic banking without a card
C. Only corporate treasury operations
D. International remittances only
E. Only urban ATM networks
Answer: B. AePS underpins rural, BC-led financial inclusion.
š³ RuPay
16 RuPay is developed and operated by:
A. RBI
B. NPCI
C. SEBI
D. A foreign card network
E. CERSAI
Answer: B. NPCI developed and operates RuPay.
17 RuPay forms the backbone of which government financial inclusion programme?
A. PM-KISAN
B. PMJDY
C. PMSBY
D. PMJJBY
E. Stand-Up India
Answer: B. RuPay cards underpin the PMJDY programme.
š NACH
18 NACH is primarily used for:
A. One-off, single high-value transfers
B. Bulk, repetitive transactions like salary credits and EMI debits
C. Only foreign exchange trading
D. Only cheque clearing
E. Only ATM cash withdrawals
Answer: B. NACH handles bulk, repetitive transactions.
19 NACH is operated by:
A. RBI directly
B. NPCI
C. SEBI
D. IRDAI
E. FIU-IND
Answer: B. NPCI operates NACH.
š ECS
20 ECS has largely been replaced by:
A. RTGS
B. NACH
C. UPI
D. AePS
E. CBDC
Answer: B. NACH has largely replaced ECS.
21 Compared to NACH, ECS operated:
A. On a fully centralised, pan-India basis
B. On a more fragmented, regional basis
C. Only for international transfers
D. Only via mobile apps
E. Only for RTGS-sized transactions
Answer: B. ECS was regional and less standardised than NACH.
š Digital Wallets
22 Digital Wallets are regulated under RBI's:
A. Master Direction on KYC
B. Master Direction on Prepaid Payment Instruments (PPIs)
C. Master Direction on Wilful Defaulters
D. Priority Sector Master Direction
E. Microfinance Master Direction
Answer: B. PPI regulations govern digital wallets.
š» Internet Banking
23 Internet Banking primarily provides access to banking services through:
A. A physical branch visit
B. A bank's website/web portal
C. Only a landline phone call
D. Only a physical passbook
E. Only a fax machine
Answer: B. Internet Banking uses a website/web portal.
š± Mobile Banking
24 Mobile Banking is best described as:
A. Banking services accessed via a dedicated smartphone app
B. A type of physical currency
C. A form of cheque clearing
D. Only available in metro cities
E. A type of fixed deposit
Answer: A. Mobile Banking delivers services via a smartphone app.
šŖ CBDC
25 CBDC stands for:
A. Central Bank Digital Currency
B. Commercial Bank Deposit Certificate
C. Consolidated Banking Data Centre
D. Credit-Backed Digital Currency
E. Cross-Border Digital Clearing
Answer: A. CBDC = Central Bank Digital Currency.
26 RBI's wholesale CBDC pilot (eā¹-W) was launched on:
A. 1 November 2022
B. 1 December 2022
C. 1 January 2020
D. 1 April 2024
E. 1 November 2025
Answer: A. The wholesale pilot launched 1 November 2022.
27 RBI's retail CBDC pilot (eā¹-R) was launched on:
A. 1 November 2022
B. 1 December 2022
C. 1 January 2023
D. 1 April 2025
E. 1 June 2020
Answer: B. The retail pilot launched 1 December 2022.
28 The retail e-Rupee operates through which model?
A. A single-tier model where RBI directly serves customers
B. A two-tier model ā RBI issues tokens to banks, who distribute to customers
C. A three-tier model involving foreign central banks
D. No structured model at all
E. A model requiring physical cash exchange only
Answer: B. The retail e-Rupee uses a two-tier RBI-bank-customer model.
29 As of 2026, the status of India's CBDC is best described as:
A. Fully launched nationwide, replacing physical cash
B. Still in expanding pilot phase, with no full-scale public launch announced
C. Completely discontinued
D. Available only outside India
E. Merged entirely with UPI
Answer: B. CBDC remains in an expanding pilot phase.
30 During FY 2025-26, RBI piloted CBDC for welfare/subsidy delivery in which states/UTs? (i) Gujarat (ii) Puducherry (iii) Chandigarh
A. (i) only
B. (i) and (ii) only
C. All of (i), (ii) and (iii)
D. (iii) only
E. None of these
Answer: C. All three ā Gujarat, Puducherry, and Chandigarh ā hosted welfare CBDC pilots.
31 RBI's Unified Markets Interface (UMI) is primarily designed for:
A. Retail UPI transactions
B. Tokenisation of financial assets, using wholesale CBDC for settlement
C. Consumer bill payments
D. ATM cash dispensing
E. Cheque clearing
Answer: B. UMI facilitates asset tokenisation settled via wholesale CBDC.
32 As of the RBI's 2026 FAQ update, approximately how many banks offer CBDC (eā¹) wallets to users?
A. 4
B. 9
C. 19
D. 50
E. All banks in India
Answer: C. 19 banks currently offer CBDC wallets.
š Digital Payment Security
33 Card-on-file tokenisation, mandatory since October 2022, is designed to:
A. Store the customer's raw card number with every merchant
B. Replace stored card numbers with secure tokens, reducing fraud risk
C. Eliminate the need for OTP verification
D. Allow merchants to freely share card data
E. Replace UPI entirely
Answer: B. Tokenisation replaces raw card data with secure tokens.
34 Two-Factor Authentication (2FA) in digital payments typically combines:
A. Two passwords, both identical
B. Something the user knows/has (e.g., card + OTP/PIN)
C. No verification at all
D. Only a signature
E. Only a phone call
Answer: B. 2FA combines multiple independent verification factors.
š Mixed / Applied Concepts
35 A customer needing to instantly transfer ā¹3 lakh outside banking hours would best use:
A. NEFT (batch-based, may have delay)
B. RTGS (instant, meets the ā¹2 lakh minimum)
C. UPI (capped at ā¹1 lakh for regular transfers)
D. A physical cheque
E. ECS
Answer: B. RTGS is instant, 24Ć7, and suits this ā¹3 lakh transfer.
36 Which of the following systems are operated by NPCI, not RBI directly? (i) UPI (ii) IMPS (iii) RTGS (iv) RuPay
A. (i) and (ii) only
B. (i), (ii) and (iv) only
C. (iii) only
D. All of (i), (ii), (iii) and (iv)
E. (iv) only
Answer: B. UPI, IMPS, and RuPay are NPCI systems; RTGS is operated by RBI.
37 A rural customer without a debit card, wanting to withdraw cash using only their Aadhaar and fingerprint at a BC point, would use:
A. RTGS
B. AePS
C. NACH
D. BBPS
E. CBDC wholesale
Answer: B. AePS enables card-free, biometric cash withdrawal.
38 A company wanting to credit monthly salaries to thousands of employee accounts simultaneously would most likely use:
A. Individual RTGS transfers, one by one
B. NACH
C. AePS
D. A single UPI QR code
E. CBDC retail wallets
Answer: B. NACH is designed for exactly this kind of bulk crediting.
39 Which of the following are true about UPI's growth as of December 2025? (i) Volume grew 29% YoY (ii) Value grew approximately 20% YoY (iii) Average daily transaction count fell below 100 million
A. (i) only
B. (i) and (ii) only
C. (iii) only
D. All of (i), (ii) and (iii)
E. (ii) and (iii) only
Answer: B. Volume and value both grew strongly; daily counts were far above 100 million (statement iii is false).
40 A merchant wanting to accept a single utility-style recurring payment covering electricity, water, and mobile bills through one common platform would use:
A. NACH
B. BBPS
C. RTGS
D. AePS
E. CBDC wholesale
Answer: B. BBPS is the unified bill-payment platform.
41 Which of the following best differentiates CBDC from UPI?
A. CBDC is a direct central bank liability; UPI is a payment rail moving money between existing bank deposits
B. They are identical concepts
C. UPI is issued directly by RBI as legal tender
D. CBDC has no connection to RBI
E. UPI predates CBDC by over 50 years
Answer: A. CBDC is RBI's own digital currency; UPI moves money between bank accounts.
42 Which combination of features describes IMPS accurately? (i) Operated by NPCI (ii) Available 24x7 (iii) Settles only once daily in batches
A. (i) only
B. (i) and (ii) only
C. (iii) only
D. All of (i), (ii) and (iii)
E. (ii) and (iii) only
Answer: B. IMPS is NPCI-operated and 24Ć7 instant ā not batch-settled (statement iii is false).
43 A student paying tuition fees of ā¹4 lakh via UPI, taking advantage of the special education-category limit, illustrates:
A. A violation of UPI rules
B. The enhanced UPI category limit (up to ā¹5 lakh/transaction) introduced from September 2025
C. An RTGS transaction misclassified as UPI
D. A CBDC wholesale transaction
E. An AePS transaction
Answer: B. Education payments qualify for the enhanced UPI category limits.
44 Which of the following is the most fundamental reason NEFT has no per-transaction maximum, unlike UPI?
A. NEFT is designed and regulated by RBI directly for a broader range of transaction sizes, including large corporate transfers
B. NEFT is less secure than UPI
C. NEFT is only for retail micro-payments
D. UPI has no security features at all
E. There is no meaningful difference
Answer: A. NEFT serves a broader range of transfer sizes, including large-value transfers.
45 Which of the following would be classified as a Prepaid Payment Instrument (PPI)?
A. A savings bank account
B. A mobile wallet with a stored monetary balance
C. A fixed deposit receipt
D. A term loan account
E. A recurring deposit account
Answer: B. A mobile wallet storing balance is a classic PPI.
46 Which of the following statements about RBI's CBDC pilots are correct? (i) The wholesale pilot preceded the retail pilot by about a month (ii) Both pilots launched in the same week (iii) The wholesale pilot targets financial institutions; the retail pilot targets the general public
A. (i) and (iii) only
B. (ii) only
C. (iii) only
D. All of (i), (ii) and (iii)
E. (i) only
Answer: A. The wholesale pilot (1 Nov 2022) preceded retail (1 Dec 2022) by about a month; statement (ii) is false.
47 Which of the following best explains why RBI has been cautious about a full-scale CBDC launch?
A. UPI's dominance makes rapid mass adoption of a parallel system challenging
B. CBDC is illegal in India
C. RBI has no interest in digital currencies
D. Banks have refused to participate entirely
E. There is no use case for CBDC anywhere
Answer: A. UPI's massive existing scale makes rapid CBDC adoption harder to justify at pace.
48 A bank wanting to prevent card fraud by ensuring merchants never store a customer's actual card number would implement:
A. NACH
B. Card tokenisation
C. AePS
D. BBPS
E. ECS
Answer: B. Tokenisation prevents storage of raw card numbers.
49 Which of the following digital payment systems would be LEAST suitable for a single ā¹50 payment to a street vendor?
A. UPI
B. RTGS
C. A digital wallet
D. AePS (where applicable)
E. Cash equivalent digital rupee
Answer: B. RTGS's ā¹2 lakh minimum makes it unsuitable for a ā¹50 payment.
50 Which of the following best summarises the overall direction of India's digital banking evolution by 2026?
A. A shift away from digital payments back to cash
B. Continued expansion of UPI's dominance, alongside gradual, cautious CBDC pilot expansion into welfare and cross-border use cases
C. Complete replacement of all banking channels by CBDC
D. Abandonment of NEFT and RTGS entirely
E. No meaningful change since 2016
Answer: B. UPI dominance continues, while CBDC expands cautiously into new pilot use cases.
Disclaimer: This article is prepared for educational and exam-preparation purposes only, reflecting RBI/NPCI payment-system rules and CBDC pilot status as of September 2026. Payment limits and figures are revised periodically ā candidates should cross-check the latest official IIBF syllabus and current RBI/NPCI notifications before the exam.