Essays on payment performance, infrastructure and economics
Long-form writing on how payments actually work: authorization rates and false declines, orchestration across processors, interchange economics, fraud defence, ledger design, open banking and cross-border settlement.
All essays
- Building a Payments Ledger That Survives an Audit
Every fintech eventually discovers that its database is not a ledger. Here are the invariants that separate systems you can trust with money from ones you cannot.
- The Modern Payment Fraud Playbook: Defending Against Attacks That Learn
Fraud has industrialised. Account takeover, synthetic identity, first-party fraud, and authorized push payment scams each demand different defences — and blocking more is not the goal.
- Stablecoins in Cross-Border Payments: Separating the Real Use Case from the Pitch
Stablecoins have found genuine product-market fit in a narrow band of cross-border flows. Understanding exactly where — and why — matters more than the ideology.
- Authorization Rate Optimization: The Cheapest Revenue You Are Not Collecting
A one-point lift in authorization rate outperforms most growth initiatives. Here is the systematic playbook for finding and fixing false declines.
- Payment Orchestration: When Multiple Processors Help and When They Hurt
Orchestration promises redundancy, better rates, and global reach. It also multiplies operational complexity. Here is how to judge whether you are ready.
- How Payment Rails Actually Work: From Card Swipe to Settled Funds
A ground-level tour of the four-party model, authorization, clearing, and settlement — and why money that looks instant to the shopper takes days to actually move.
- Interchange Economics: Who Really Pays for Your Points
Interchange is the largest line item in card acceptance and the least understood. Here is how it is set, why it varies so wildly, and what regulation has and has not changed.
- Embedded Finance and the Great Distribution Shift
Financial products are migrating into the software where work already happens. That relocation changes who owns the customer, who carries the risk, and where the margin lands.
- Buy Now Pay Later Meets the Credit Cycle
BNPL grew up in an era of cheap funding and benign credit. Now it faces regulation, funding costs, and its first real test of underwriting quality.
- Open Banking and the Rise of Account-to-Account Payments
Bank-to-bank payments were supposed to disrupt cards. In some markets they did decisively, in others they stalled — and the difference reveals what actually drives payment adoption.