Open Banking and Psychology: A Mutually Beneficial Relationship

Juggling accounts across different banks costs memory, attention, and accuracy. nBanks brings them into one place.

A finance team typically manages more than one bank account, often at more than one bank. One for financing, another for day-to-day checking accounts, and yet another for international transactions. Each has different access levels, statement formats, and approval workflows. Every month, these accounts must be reviewed to maintain financial control over the company. Approving a transaction becomes more difficult when the wrong bank or the wrong account is used for the task. This fragmentation creates friction that weighs on those who handle the company's money every day. There is a solution to this strain: open banking platforms, such as nBanks, bring together information from multiple accounts and banks in a single place.

The first psychological effect of banking fragmentation is memory overload. An employee who needs to keep track of the balances of multiple accounts, the limits at each bank, and the obligations associated with each one expends mental capacity that should be reserved for analyzing information. Every login, every manual validation, every attempt to navigate a different system consumes attention without producing value. It is time wasted and energy drained on small decisions that repeat themselves every day. Research summarized by the American Psychological Association, based on four experiments by Joshua Rubinstein, David Meyer, and Jeffrey Evans, found that people lose time whenever they switch repeatedly between tasks. The loss becomes greater when the tasks are more complex or less familiar. In a finance function, this matters because each bank portal has its own language, layout, approval logic, and reporting format. They are repeatedly rebuilding the mental context needed to interpret what they see. A single point of access does not remove the complexity of the underlying accounts, but it can remove much of the repeated effort required to locate and reorient around the same information.

Added to this is a cost that only becomes apparent after switching systems: attention residue. Whenever an employee closes one bank's portal and opens another's, part of their mind stays fixed on the previous task for a few minutes. It is this residual effect that explains why, after managing accounts at three different banks, a person takes longer to focus on the next task, even one that has nothing to do with banking. The cost is especially relevant when the systems involved are not designed around the same workflow. Research cited by the American Psychological Association explains why: switching tasks requires two separate mental operations, deciding to move to the new task and activating its rules while disengaging from the previous one. In practical terms, the employee has to leave one bank's logic behind before applying another's permissions, account structure, and approval process. Even when each switch takes only seconds, those seconds add up across a day spent checking balances, validating payments, downloading statements, and reconciling transactions. The result is slower execution and less uninterrupted attention for analysis and control.

There is also the risk of mixing up accounts. When multiple sources store data that looks similar, confusing them is simply how human memory tends to behave. Assigning an expense to Account A when it actually came from Account B may seem like a minor mistake, but if that amount is entered into a financial model, the error propagates through all subsequent calculations. And if it touches legal obligations or an audit, the problem stops being minor. Psychology has a name for this: a "source monitoring error," confusing where information came from rather than the information itself. Research published in Psychological Science shows that people can retain information while confusing the source it came from. In one experiment, 8 of 12 participants who gave a wrong answer, 67%, made a source-misattribution error, a rate well above the 33% expected by chance. In a related condition, the error rate reached 40% on the critical trial, compared with 5% in the first control trial. These figures do not mean the same percentages apply to bank-account reconciliation. They do show that source confusion is a measurable feature of human cognition, particularly when similar information has to be told apart across different formats or locations. It is an error that fades when there are fewer sources to confuse. Reducing the number of places where financial data is viewed and handled reduces the chances for it to happen.

There is also the paradox of choice: more options can make a decision harder, even when each new option is meant to help. Each additional bank account is another opportunity for the company, but it is also one more choice for the people who use it daily. That seems positive until the extra choice makes a simple task take longer than before, without the company gaining any efficiency in return. The paradox needs to be read carefully, though: more options do not automatically produce worse decisions. A meta-analysis published in the Journal of Consumer Research, covering 63 conditions from 50 published and unpublished experiments and 5,036 participants, found an average choice-overload effect close to zero. The meta-analysis does not say choice overload never happens. It shows the effect depends heavily on the situation, becoming more likely when people lack familiarity with the options, have no clear prior preference, face alternatives that are hard to compare, or have to process too much information in too little time. Bank accounts create exactly this kind of complexity, differing in purpose, currency, permissions, balances, approval rules, statement formats, and transaction histories. The problem, then, is not the number of accounts. It is the effort of comparing and choosing among them without a single and coherent view.

Finally, there is the cost of uncertainty. Not knowing how much cash the company has available creates an underlying sense of anxiety among financial managers, even when that information is not urgent. The mind seeks predictability, and the lack of it comes at a price: more stress and a reduced ability to make good decisions when it matters most. This cost shows up in how finance leaders assess the quality of their own information, not just in how they feel. Research reported by ICAEW found that 98% of surveyed finance and accounting leaders lacked confidence in their company's cash-flow visibility, even though 37% considered real-time cash-flow understanding critical for responding to unpredictable market changes. The same research found that 37% of CFOs did not fully trust their own financial data, and 50% of senior finance and accounting professionals reported the same concern. 31% of respondents traced that lack of trust to numerous data sources, month-end spreadsheets, and manual data collection. When a finance team cannot see cash, transactions, and account status in one coherent environment, uncertainty becomes part of the daily operating model. That makes it harder to act quickly, approve payments with confidence and make decisions before the situation turns urgent.

None of these issues stem from a lack of care on the part of financial teams. Memory overload, attention residue, account mix-ups, the paradox of choice and the anxiety caused by uncertainty all share the same root cause: the way banking information is scattered across different banks, systems, and formats. It is a problem of information organization and it is solved by changing that organization: consolidating balances, transactions, and approvals from all accounts into a single point of access. That is what an open banking platform like nBanks makes possible, viewing and managing all accounts from one place instead of switching between multiple systems every day. Less noise for the finance team means more room for what matters: making sound decisions and making them on time.