Technology in Banking System: Revolutionising Financial Transactions

Walk into a bank branch today and you can open an account, transfer money, or apply for a loan in a matter of minutes. Rewind a few decades and none of this was possible at that speed. Banks used to shut their counters by early afternoon just so staff could spend the rest of the day adding up transactions by hand and matching every entry across registers. Technology changed that completely, and it kept changing how banking works long after the first computer showed up on a bank’s desk.

From ledger books to networked servers 🔗

Before computers entered banking, every deposit, withdrawal, and transfer had to be written into a physical ledger, checked by a second person, and reconciled against other registers before the books could be closed for the day. This manual process is exactly why old-style banks stopped serving customers so early. The remaining working hours went into balancing accounts and preparing records for the next morning. A single mismatched entry could take hours to trace back through stacks of paper.

The core banking revolution 🔗

The shift began with what banking professionals now call a core banking solution, a centralised system that links every branch, ATM, and digital channel of a bank to one shared database. Once a bank adopts this kind of system, a transaction recorded at any branch updates instantly everywhere else. That is why you can walk into any branch of your bank, in any city, and access your account exactly as if you were sitting in your home branch. The Reserve Bank of India itself moved its own operations onto a similar centralised platform, a step it undertook specifically to re-engineer its internal processes and integrate its systems with banks and financial institutions rather than rely on older, disconnected methods of record-keeping.

This single architectural change removed the need for the long non-banking hours that were once routine. Reconciliation that used to consume an entire afternoon of clerical effort now happens automatically, in the background, within seconds of a transaction being made.

Impact on customer experience and internal operations 🔗

Computers did not just speed up back-office paperwork, they changed what a bank even means to the person using it. ATMs, passbook printers, cheque-scanning machines, and net banking portals turned banking into something that happens on the customer’s schedule rather than the bank’s. Nobody plans their day around a bank’s working hours anymore; banking now fits into the gaps of an ordinary day, whether that is checking a balance on a train or paying a bill after office hours.

Internal operations get an overhaul too 🔗

This transformation runs just as deep inside bank buildings as it does at the customer counter. Consider the Reserve Bank of India’s own back office: for years, a large share of its internal work, approvals, licensing applications, and coordination between departments, moved on paper. That changed with two internal digital systems, Sarthi and Pravaah, which digitised the RBI’s internal workflows and its regulatory application process respectively. According to the central bank’s own reporting, Pravaah alone has allowed more than 70 different types of regulatory applications to be filed digitally across nine departments, cutting down the paper trail that used to slow approvals for weeks. The same pattern has repeated across the wider banking sector: internal credit checks, compliance reporting, and inter-branch approvals that once required physically moving files between desks now move through interconnected software instead.

Role of internet and mobile technology 🔗

If computers laid the foundation, the internet and mobile phones built the structure we all bank inside today. Wireless access removed the last physical barrier between customers and their money, the need to visit a branch at all, and gave banks a way to reach customers who never had a nearby branch to begin with.

UPI: a case study in speed and scale 🔗

Nothing captures this shift better than the Unified Payments Interface, commonly known as UPI. Launched by the National Payments Corporation of India, UPI lets anyone with a smartphone move money between bank accounts instantly, at any hour, without needing to know the recipient’s account number or IFSC code. The scale UPI has reached in under a decade is difficult to overstate. Annual UPI transaction volume grew from about 2 crore transactions in FY 2016-17 to over 24,000 crore transactions in FY 2025-26, close to a 12,000-fold increase, while the value moved through the system rose by more than 4,000-fold over the same period. Person-to-merchant payments, the kind used for everyday purchases like groceries, transport, or a cup of tea from a roadside stall, now make up the majority of this volume, which shows how deeply digital payments have settled into daily life rather than staying limited to occasional large transfers.

This growth was not just a function of the technology existing, it needed the surrounding infrastructure to catch up too. UPI transaction value rose 30 percent in FY25 alone compared with the previous year, a jump driven by cheaper mobile data, wider smartphone ownership, and growing merchant acceptance of QR-code payments even in small towns.

Security keeping pace with speed 🔗

Moving this much money this fast would be reckless without matching security. Every digital transaction today runs through layers of protection that did not exist in the ledger era: encrypted communication between the app and the bank’s servers, one-time passwords sent to a registered mobile number, device binding that ties a banking app to a specific phone, and daily transaction limits designed to contain damage if something does go wrong. Banks and regulators have also had to build systems that can flag suspicious activity in real time rather than after the fact, since a fraudulent transfer that clears in seconds cannot be caught the next morning during manual reconciliation. This is one of the less visible ways technology has changed banking, it has forced the industry to build trust into the system itself rather than relying on a customer’s relationship with a familiar branch manager.

Wireless access and everyday convenience 🔗

Mobile banking apps have also quietly replaced several separate trips to the bank with a single tap. Updating a passbook, requesting a cheque book, blocking a lost card, or setting up a recurring payment used to each require a branch visit. Now they sit inside one app, available at 2 a.m. as easily as at 2 p.m. This convenience is not a side effect of technology, it is a direct result of banks investing in wireless communication systems that keep every channel, branch, ATM, website, and app, connected to the same live data.

Valuable roles of banking in society 🔗

It is tempting to think of banking technology purely as a convenience upgrade: faster transfers, fewer queues, less paperwork. But the more important story is about what banks actually do for an economy, and how technology has strengthened that role rather than replaced it.

Financial intermediation, made faster and wider 🔗

Financial intermediation, the process of channelling savings from people who have surplus money into loans for people and businesses who need it, is the basic economic function banks perform. Technology has not changed this function, it has changed how quickly and how widely banks can carry it out. A bank today can assess a small business loan using digital transaction history instead of weeks of paperwork, and can extend credit to a borrower in a small town almost as easily as one in a metro city.

Technology has also made banking central to financial inclusion in a way that would have been impossible through physical branch expansion alone. India’s approach relies on what is often called the JAM trinity, linking Jan Dhan bank accounts, Aadhaar identity numbers, and mobile phones into one connected system, an approach the World Bank has documented as central to bringing informal-sector workers and previously unbanked citizens into the formal financial system. The scale this reached is significant: Jan Dhan accounts have grown from roughly 14.72 crore in 2015 to 59.09 crore by August 2026, with close to 33 crore of those accounts held by women, and deposits in these accounts rising nearly thirteen-fold over the same period. None of this would have been achievable through branch expansion on its own. It needed mobile connectivity, digital identity verification, and low-cost account opening to reach remote and rural parts of the country cost-effectively.

Creating products, moving money, and shaping the financial future 🔗

Technology has let banks design financial products that would have been impossible under manual systems: instant micro-loans assessed through transaction history, automated recurring investments, real-time fraud alerts, and account aggregators that let a customer view holdings across multiple institutions in a single app. Banks are also using this same infrastructure to fulfil their oldest role, facilitating the transfer of funds, on a scale that paper-based systems simply could not have supported. Direct benefit transfers from the government to citizens, business payments between companies, and cross-border remittances all move through the same digital rails that power everyday UPI payments.

What has not changed is the underlying purpose. Money still needs to move from savers to borrowers, from the government to citizens, and from one business to another. What has changed is the infrastructure carrying that movement and how many more people it can now reach, from a farmer in a village receiving a subsidy directly into a bank account to a small trader accepting digital payments for the first time.

What do you think? As banks lean further into automation and digital-only service, do you think something is lost when banking no longer requires a human conversation at a counter? And with digital transactions growing this fast, how well do you think awareness of online safety and fraud protection is keeping pace among new banking customers?

References

1. https://www.business-standard.com/amp/article/finance/rbi-to-switch-to-cbs-use-in-its-operations-109060800084_1.html
2. https://newsonair.gov.in/rbi-awarded-digital-transformation-award-2025-for-digital-initiatives
3. https://www.pib.gov.in/PressReleasePage.aspx?PRID=2257087&reg=3&lang=2
4. https://www.business-standard.com/amp/finance/news/upi-value-hits-record-rs-24-77-trillion-in-march-marks-new-high-in-fy25-125040100744_1.html
5. https://documents1.worldbank.org/curated/en/818411539058713411/pdf/Project-Information-Document-PID-India-Digital-Financial-Inclusion-of-Informal-Sector-P167886.pdf
6. https://ddnews.gov.in/en/12-years-of-jan-dhan-how-indias-financial-inclusion-drive-has-expanded-banking-access-security-and-opportunity/