Transaction Cost Economics and The Demise of Wire Transfers

The Nature of the Firm (Coase, 1937) introduced one of the primary organizing principles in economics arguing that the costs of economic exchange — not just production costs — determine how firms organise themselves and where they draw their boundaries. Coase identified three categories of transaction cost: search and information costs, bargaining and decision costs, and policing and enforcement costs. The gradual decrease in the usage of wire transfers as the main mode of B2B payment demonstrates Coase's theory in action in the current marketplace.

Transaction Costs in Payment Terms

Wire transfers generate significant friction across all three categories. On the information side, the verification process of beneficiary information is done manually and is subject to error. Payment terms tied to wire settlement — typically one to three business days — introduce working capital costs that compound across supply chains. The enforcement of wire transfers is generally irreversible which causes wire transfers to be inherently risky since, once sent, the recovery of payment will be either impossible or prohibitively expensive.

The Association of Financial Professionals indicates that processing a wire payment will cost anywhere from $14-$30 and will include the cost associated with labour, accounting, and error corrections related to processing the transaction. This price is much higher than what the bank charges for sending the wire, thereby demonstrating that the visible price of the transaction is significantly lower than the actual economic costs of the transaction.

Adverse Selection and Fraud-Related Market Failure. 

One of the reasons that market failures occur as a result of an irreversible wire transfer payment is that there is an "adverse selection" problem. Specifically, the sender cannot verify the authenticity of the beneficiary in a timely manner; and thus bad actors exploit the information asymmetry between payer and recipient. The FBI estimated that business email compromise (BEC) resulted in a total loss of $2.9 billion to U.S. businesses in 2023, where a supplier's email is corrupted, causing the wire payment to be sent to an incorrect location. The model of "Lemon Markets" developed by Akerlof applies to the problem of sending wire transfers, as businesses are unable to easily differentiate between legitimate and non-legitimate wire payment instructions, thus systematically mispricing transactions; this results in either serious investments in verification types of transactions or losses, both of which negatively impact allocative efficiency.

Virtual Cards as Institutional Response to Market Failure. 

Virtual cards serve to reduce transaction costs through the institutionalised nature of monitoring and administrative costs. The virtual card is an institutional device through which to internalise the amount of costs that wire transfers have typically created outside of the business process. Each virtual card credential has a unique counterparty, value and timeframe; modern virtual card providers like Finup build on this structure to eliminate fraud vectors, automate reconciliation, and generate structured data that reduces monitoring and administrative costs. Virtual cards represent exactly the kind of institutional innovation that new institutional economics predicts will emerge when transaction costs make existing arrangements economically irrational.

From 2020 to 2023, according to the report published by Mastercard on B2B payments, the use of virtual cards by mid-market U.S. firms increased by 42%, primarily driven by the automated accounts payable process as a transactional channel. This shift is not driven by preference alone — it is driven by cost minimisation, which is the mechanism Coase placed at the centre of how firms organise exchange.

How Transaction Costs Influence Firm Boundaries and Market Structure

Coase argued that transaction costs determine firm boundaries. When it becomes less costly to coordinate externally, the practice of outsourcing becomes more rationally appealing, while vertical integration is less so. As virtual card solutions lower the transaction costs of B2B payments, they reduce the cost of transacting with external suppliers. In 2024, JP Morgan found that clients who utilise integrated virtual card programmes will see an average of 60% savings in payment processing costs compared to businesses that use wire transfer processes.

From a Coasian perspective, the decline of the wire transfer is indicative of a fundamental shift in how firms set their boundaries. The wire transfer is not declining because it is outdated. It is declining because the transaction cost arithmetic has decisively turned against it.