Methodology

PaymentBrief publishes operator-grade payments intelligence — market payment guides, PSP analysis, payment method breakdowns, regulatory summaries, and payment operations playbooks. This page documents how content is sourced, what confidence levels mean, and how guides are refreshed over time.

What we cover

Payment market guides cover payment rails, regulatory licensing, merchant discount rates, PSP coverage, and market-entry considerations. PSP and payment method guides focus on integration economics and operator-relevant decision points. Articles analyse contracts, fee structures, compliance frameworks, and infrastructure changes relevant to payment operators.

Content is written from an operator perspective — for merchants, PSPs, fintech product teams, and platforms processing real payment volume. We do not republish vendor press releases as editorial analysis or present unsourced market predictions as facts. Any accepted sponsorship is clearly labelled and remains subject to editorial control, as described in our Disclosure page.

Source classification

The source notes in market guides and articles distinguish the following eight types. A label describes the cited material; it does not convert secondary reporting into a regulator document.

Regulator

Central banks, financial authorities, and government bodies — MAS, RBI, BCB, Bank Indonesia, FCA, and equivalent agencies. These are primary sources for licensing requirements, policy, and official statistics.

PSP

Direct from the payment service provider — Stripe documentation, Adyen Help Center, Checkout.com developer portal, and equivalent primary PSP sources.

Rulebook

Card network or payment rail rulebooks — Visa Core Rules, Mastercard Standards, Pix Rulebook, EPC SCT Inst Rulebook. These are authoritative on scheme fee structures and network participation rules.

Filing

SEC filings, annual reports, prospectuses, and audited financial statements. Used for volume, revenue, and market share data published by public companies.

Pricing

Published PSP pricing pages checked at a specific date. Pricing pages change without notice — the check date is always recorded.

Industry data

Third-party data providers — Statista, Chainalysis, Nilson Report, FXC Intelligence, McKinsey, CB Insights, and equivalent research. These are cited with source and date; where methodology is unclear, data is flagged as estimated.

Press

News articles and press releases — used sparingly, only for recent announcements without a primary regulatory or corporate filing source. The originating company's statement is preferred where available.

Operator estimate

PaymentBrief's own operational inference or illustrative estimate. It is not a published rule or a measured market-wide figure; assumptions and limits should be stated beside it.

Refresh cadence

Pages are prioritised for review when a source changes, a reader reports an error, or a scheduled check flags an aging claim. Pricing and regulatory details can change between checks. There is no guaranteed six-month review cycle for every market or quarterly check for every price.

A page's update or review date has the meaning stated next to it; an update to one claim is not proof that the full guide was re-verified. Source dates in the evidence block identify when individual materials were checked. Verify time-sensitive MDR, licensing and provider terms before acting.

What this site is not

Content on PaymentBrief is for informational purposes only. It is not legal advice, not financial advice, and not tax advice. Payment regulations, licensing requirements, and MDR rates change frequently. Engage local legal and compliance counsel before making regulatory or commercial decisions in any market.

Reporting errors

Factual errors are corrected promptly. If you identify a claim that is wrong, outdated, or unsupported, contact us at contact@paymentbrief.com. Include the URL, the specific claim, and the source you believe is correct.

Editorial standards

For editorial mission, authorship, and commercial relationship disclosures, see the About page and Disclosure page.