Payment Processors vs Erotica: The Real Reason Your Books Get Banned

Every adult-content policy at every major retailer is really a payment processor policy in disguise. Amazon, Apple, Kobo, Google Play, Smashwords, Draft2Digital, Hoopla, Patreon, OnlyFans, MasterCard's recent dramas with Pornhub, Visa's recent dramas with everyone — they are all responding to the same underlying constraint, which is that two private companies in California run the underwriting that decides which merchants can process credit card transactions for what content, and the rules those companies apply have tightened steadily for fifteen years and show no sign of loosening.

If you are publishing erotica in 2026, this is the system you are operating inside, and understanding it changes how you make decisions about where to publish and how to get paid. Most authors never learn how it works because nobody in publishing has any incentive to explain it. Here is what is actually going on.

The structure of the system

When a reader buys your book on Amazon, the payment moves through five distinct entities before it reaches you. The reader has a card from an issuing bank. The card is on a network — Visa, Mastercard, Discover, or American Express. Amazon has a merchant account with an acquiring bank. The transaction passes through the network from issuing bank to acquiring bank, and the network takes a small percentage at each step. Amazon then pays you out of its accumulated revenue, less their 30 to 65 percent cut.

The leverage point in this chain is the network rules. Visa and Mastercard together process more than 90 percent of card transactions globally, and the rules they set about what merchants can accept their cards for are essentially law for any business that operates at scale. The networks publish detailed merchant category requirements, prohibited content rules, and enforcement frameworks. Acquiring banks who let their merchants violate these rules get fined, lose network access, or get expelled. Banks that get expelled cannot operate as card processors at all, which is an extinction-level event for a bank.

The merchant — Amazon, in this example — is one link in the chain, and not the most powerful link. Amazon's risk-management decisions about adult content are almost entirely about not violating Visa and Mastercard's rules. The customers and the authors are downstream of those rules and have no meaningful voice in setting them.

What Visa and Mastercard actually prohibit

The published rules are publicly available and worth reading in their actual form. The summary is that the networks prohibit transactions for content that depicts illegal acts (CSAM, real-animal abuse, non-consensual content involving real people), content that the merchant cannot verify is age-gated, and content that the network considers high-risk for chargebacks or reputational damage.

The high-risk category is where the action is. The networks do not have a published list of specific content types that are prohibited as high-risk. They have a list of merchant categories — adult entertainment, gambling, certain pharmaceuticals — that are flagged for enhanced underwriting, and within those categories the merchant has to demonstrate compliance with the network's content standards. The standards are deliberately vague. The enforcement is reactive. A merchant that processes a transaction for a piece of content that generates a complaint, a news story, or a political controversy can lose its merchant account on hours' notice.

This vagueness is the problem. Visa and Mastercard do not say "incest fiction is prohibited." They say merchants must not process transactions for "content that could damage the network's reputation," and they enforce that standard by punishing specific merchants when specific transactions come to their attention. The merchant cannot know in advance which transactions will trigger enforcement, so the merchant pre-emptively blocks anything that might.

The result is what you see at Amazon, at Apple, at Kobo. Books with explicit content in flagged categories — incest, step-family, dubcon, breeding, monster, ageplay, anything the merchant's risk team can imagine being the subject of a future complaint — get filtered out, suppressed, or banned, regardless of whether the books themselves are legal. The merchant is not making a moral judgment about your book. The merchant is making a risk-management judgment about its own merchant account.

Why this keeps tightening

The system has been tightening for fifteen years and the curve has accelerated in the last five. A few specific events drove the tightening, and they explain why 2026 is harder than 2020 was, which was harder than 2015 was.

In 2020, Mastercard and Visa both faced public pressure over content on Pornhub, which led to mass de-monetization of the site and a wave of new merchant requirements specifically targeting adult content. The new requirements included enhanced KYC for the people uploading content, mandatory consent documentation for performers, and content moderation requirements that effectively required adult merchants to operate the kind of trust-and-safety systems that only the largest platforms can afford. Most smaller adult platforms could not meet the requirements and either shut down or stopped accepting card payments.

In 2021, Mastercard introduced new requirements for "specially monitored merchants" that required acquiring banks to provide additional documentation, audits, and content reviews for any merchant processing adult content. The enhanced monitoring effectively raised the cost of providing services to adult merchants by a factor of three or four, and many acquiring banks responded by dropping adult merchants entirely.

In 2022, a series of news stories about adult content on mainstream platforms — including stories about adult books on Amazon — generated regulatory attention in the EU, the UK, and several US states. Mainstream merchants like Amazon and Apple responded by tightening their own content rules well beyond what the networks technically required, because the cost of getting it wrong publicly was worse than the cost of being conservative.

In 2023 and 2024, the EU's Digital Services Act and the UK's Online Safety Act introduced new legal obligations for platforms regarding adult content, age verification, and the protection of minors. Platforms responded by reducing the surface area of adult content they were willing to carry. The card networks signaled they would treat platforms that failed to comply with these regulations as elevated risk, which accelerated the platform-side tightening.

In 2025, several large card processors — including Stripe and PayPal — introduced their own additional restrictions on adult content that went beyond the network rules, citing reputational concerns. PayPal in particular has cut off adult merchants on hours' notice for years, and the 2025 changes formalized practices that had been informal before.

The 2026 environment is the cumulative result. There is no single restrictive policy you can point to. There are dozens of overlapping restrictions, each one slightly worse than the year before, with no coordinated mechanism for loosening any of them.

What this means for authors

The practical consequence for authors is that any platform that accepts credit cards for adult content is operating under permanent risk of having its payment processing cut off, and every platform reacts to that risk by being more conservative about content than its users would prefer. The conservatism is not about morality. It is about the fact that one phone call from a Visa risk manager can end the business.

This explains a few things that look mysterious from the outside. Why books with no obvious content issues sometimes get pulled from Amazon. Why authors get account terminations with no warning. Why Patreon banned adult content even though adult creators were a huge portion of its revenue. Why OnlyFans tried to ban adult content in 2021 before reversing course under user pressure (and even then only because they found new processors willing to take the risk at higher fees). Why every adult creator who has built a platform of any size eventually faces a payment-processor crisis.

It also explains why the consolidation in the industry has been toward a handful of mainstream platforms that can absorb the processor pressure and a handful of crypto-based platforms that route around it. The middle has been hollowed out. Independent adult merchants who tried to operate on card payments without a large platform's scale have mostly been driven out of business or forced to crypto.

The crypto workaround

Bitcoin and the other major cryptocurrencies do not pass through the Visa and Mastercard networks. Transactions settle directly between the payer and the payee through the blockchain, with no intermediary that can veto the transaction or close the merchant's account. This is the entire reason crypto matters for adult content publishing in 2026.

The trade-offs are real. Crypto requires the buyer to have a wallet and some basic familiarity with the technology, which is a friction point for some readers and a non-issue for others. Crypto prices fluctuate, which means a $4.99 book might be priced in Bitcoin at a slightly different effective price from one week to the next. Crypto transactions are pseudonymous rather than anonymous — the blockchain is public — but the connection between a wallet and a real identity requires deliberate work to establish.

For most working adult authors, the trade-offs are favorable. The fraction of readers who cannot or will not use crypto is offset by the fraction who specifically prefer the privacy. The platforms that have built crypto-based payment infrastructure for adult content tend to be more permissive, more author-friendly, and more durable than their card-based counterparts.

Maliven uses BTCPay Server for payment processing, which means all transactions on the platform settle through Bitcoin and the Lightning Network without ever touching the Visa or Mastercard networks. The platform is not exposed to processor pressure because there is no processor to apply pressure. Books that get banned from Amazon for tripping the content classifier stay up on Maliven indefinitely. Authors get paid in Bitcoin and can convert to fiat through exchanges at their discretion.

The author-side mechanics of getting paid in crypto are straightforward. You set up a wallet (the standard recommendation is a hardware wallet like a Ledger or Trezor for serious amounts, with a software wallet for daily use). You receive deposits to the wallet. You convert to fiat when you want to. The whole flow takes most authors a few hours to learn and then becomes routine.

What working authors actually do in 2026

The pattern across working adult-fiction authors in 2026 is to run a mixed payment infrastructure deliberately. The sanitized portion of the catalog runs through the major retailers with card processing — KDP for the cleaned-up versions, Apple and Kobo through Draft2Digital. The full catalog runs through platforms with no processor exposure — Maliven for direct sales, ZBookstore for the explicit backlist. The subscription layer runs through Ream Stories or SubscribeStar Adult, which have processor exposure but lower risk than the major retailers because the subscription model is more defensible to the underwriters.

The income mix shifts over time as authors learn which channels reward them and which do not. New authors typically start KDP-heavy and migrate toward crypto-based channels as their catalogs grow and they hit the inevitable payment processor problems. Established authors typically have most of their income coming from channels that are not processor-exposed, even though they still maintain a KDP presence for the new-release surge that helps with audience building.

The system is unfair in a structural sense, and no amount of individual author optimization fixes that unfairness. What the optimization does is keep you in business while the system is what it is. The platforms that route around the processors will keep growing. The platforms that depend on processors will keep tightening. The authors who set up their infrastructure with both feet planted on the crypto side of the line are the ones whose careers compound for the next ten years.

Whatever happens at the policy level, the underlying constraint — that two California companies decide what adult content gets sold in mainstream commerce — is not going to change voluntarily. The workarounds are technical and they exist. The cost of using them is mostly a few hours of learning. The cost of not using them is your career, sooner or later, depending on which kind of book Visa decides to be loud about next year.