AtomicPay Blog
Practical guides to sell more online.
Guides for creators and digital operations — checkout, funnels, subscriptions, marketing attribution, churn, and payment webhook automation.
Checkout
Black Friday in Brazil 2026: A Checkout Playbook for Digital Product Sellers
Black Friday Brazil 2026 is the biggest sales event of the year for Brazilian e-commerce, and it is no longer only about electronics and fashion. Course…
Read article
Payments
Pix with Biometrics (JSR): One-Click Pix Without Redirects, Explained
Pix changed how Brazilians pay, but online it still has one weak point: the redirect. The buyer copies a code or scans a QR code, leaves the store, open…
Read article
Payments
Brazil's Split Payment and Tax Reform (CBS/IBS): What It Means for Online Sellers
Brazil is in the middle of the biggest change to its consumption taxes in decades. Five taxes are being replaced by a dual value-added tax, and the way…
Read article
Payments
Installment Payments in Brazil (Parcelamento): What Sellers Need to Know
Walk into any Brazilian store or open any Brazilian sales page and you will see prices like "10x de R$ 29,90". Installment payments are part of how Braz…
Read article
Payments
Pix vs Credit Card: Which Should Online Sellers in Brazil Push in 2026?
Every online seller in Brazil eventually faces the same question: should I push buyers toward Pix or toward credit card? The answer affects your fees, y…
Read article
Checkout
Payment MCP Server: Let AI Assistants Run Your Checkout, Sales and Pix
AI assistants have moved from answering questions to doing real work. With a payment MCP server, you can ask an assistant to create a product, generate…
Read article
Payments
How to Sell Online Courses in Brazil: Payments, Pricing and Delivery
Brazil is one of the largest and most active markets for digital education in the world. Brazilians buy courses on everything from marketing and program…
Read article
Checkout
How to Recover Unpaid Pix Payments: Turning Generated QR Codes Into Sales
Every Brazilian seller knows the feeling. A buyer fills in the checkout, chooses Pix, generates the QR code and then disappears. The order sits in your…
Read article
Checkout
Apple Pay and Google Pay at checkout: one-tap payment
Apple Pay y Google Pay son carteras digitales que guardan las tarjetas del comprador en su móvil y le permiten pagar con un toque,…
Read article
Payments
Payment tokenization: charge again with one tap
La tokenización de pagos consiste en sustituir el número real de la tarjeta por un código sin valor fuera de tu sistema, llamado token.…
Read article
Payments
PCI DSS: what you actually comply with and what builds trust
PCI DSS es el estándar de seguridad que deben cumplir todas las empresas que guardan, procesan o transmiten datos de tarjetas de pago.…
Read article
Subscriptions
Proration when plans change: upgrades and downgrades
El prorrateo es el cálculo que ajusta el importe de una suscripción cuando el cliente cambia de plan antes de que termine su ciclo de…
Read article
Payments
3D Secure and PSD2 SCA: authenticate without losing sales
3D Secure es el protocolo que permite al banco emisor comprobar que quien paga con una tarjeta es realmente su titular. En Europa es la…
Read article
Payments
International payments: local methods by country
Los pagos internacionales son los cobros que recibe tu negocio de clientes de otros países, ya sea con tarjetas emitidas fuera de…
Read article
Payments
Intra-community invoices: B2B VAT, reverse charge and VIES
Una factura intracomunitaria es la que emites a una empresa o profesional establecido en otro país de la Unión Europea. Si el cliente…
Read article
Checkout
Pix Payment Links: How to Sell on WhatsApp and Instagram Without a Website
A Pix payment link is the fastest way to turn a conversation into a sale in Brazil. A buyer asks about your course, mentorship or ebook in a WhatsApp ch…
Read article
Subscriptions
Free trials: turn the trial into a paid charge
Un periodo de prueba gratis convierte en cliente de pago cuando el usuario ha visto valor antes de que llegue el primer cobro y ese…
Read article
Checkout
Checkout without an account: guest checkout that sells more
Un checkout sin registro, o guest checkout, permite comprar sin crear una cuenta: el cliente introduce lo imprescindible, paga y recibe…
Read article
Payments
What Are Payment Processing Systems and How Do They Work?
A payment processing system is the digital network that securely moves money from a customer to a business when someone makes a purchase. It takes the card d…
Read article
Subscriptions
Recurring Billing and Subscriptions: How to Charge Customers Automatically
Recurring billing is an automated process where a business charges a customer's saved payment method on a set schedule for an ongoing product or service. The…
Read article
Checkout
How to Reduce Cart Abandonment at Checkout
Cart abandonment happens when a customer adds items to their online cart but leaves before finishing the purchase. It is one of the most common and frustrati…
Read article
Payments
How to Accept Payments Online: A Guide for Sellers
To accept payments online, you set up a payment processor or an all-in-one platform that securely handles credit cards, digital wallets, and bank transfers. …
Read article
Payments
Online Payment Methods: Which Ones Should You Offer at Checkout?
Online payment methods are the ways customers can pay you over the internet, including credit and debit cards, digital wallets, bank transfers, and buy now, …
Read article
Payments
How to Sell Digital Products Online: A Step-by-Step Guide
Selling digital products online means creating something once, such as a template, an e-book, or a course, and selling it over and over without stock, shippi…
Read article
Checkout
How to Build a High-Converting Digital Product Checkout
A digital product checkout is the page where a visitor becomes a paying customer for something like a course, an e-book, or a template. Because digital produ…
Read article
Payments
How to Prevent Chargebacks and Payment Fraud
A chargeback is a forced reversal of a card transaction, initiated by a customer through their bank rather than through you. The bank pulls the money back fr…
Read article
Checkout
Order Bumps and Upsells: How to Increase Average Order Value
Average order value, or AOV, is the average amount a customer spends each time they place an order. Order bumps and upsells are two of the most effective way…
Read article
Payments
Accepting Payments from Brazilian Customers: Pix, Cards, Installments and CPF
Brazil is the largest digital economy in Latin America, and its buyers pay in ways that are very different from the United States or Europe. Pix, the in…
Read article
Payments
Card, Bizum or bank transfer: which online payment methods to offer
La tarjeta sigue siendo el método más universal, y se procesa a través de un TPV virtual: la infraestructura que verifica los datos,…
Read article
Payments
Bizum for business at checkout: the instant payment customers already expect
Introduce su número de teléfono móvil asociado a Bizum.
Read article
Payments
Direct debit and SEPA: the most stable way to bill subscriptions
SEPA Core: para cobros a particulares; el cliente puede reclamar la devolución durante ocho semanas. Es la opción habitual para…
Read article
Payments
Interest-free instalments: who finances the payments and what changes in cash flow
Klarna es uno de los proveedores más conocidos a nivel global y ofrece varias modalidades (3 cuotas sin intereses, pago a 30 días,…
Read article
Payments
Embedded checkout vs Redsys redirect in Spain: what leaving the page costs your store
Un checkout integrado incrusta el formulario de pago en tu propia página: los campos de tarjeta, la verificación y la confirmación…
Read article
Payments
Payment gateway: how to choose the best one for your digital business in Spain
A payment gateway is the technology intermediary that connects your online store to banks and card networks to process transactions. It is the bridge between…
Read article
Payments
Fraud prevention that declines a good sale: the cost of false positives
Ecommerce fraud costs billions of euros globally each year. Stolen cards, fraudulent chargebacks, and fake identities are real threats. That is why gateways …
Read article
Checkout
Abandoned cart recovery: the cadence that recovers without burning the list
Cart abandonment is when a visitor adds products to the cart but does not complete payment. Industry stats put the average abandonment rate between 65% and 8…
Read article
Payments
VAT and invoicing for digital products: what changes with Verifactu and OSS
Electronic invoicing is moving from optional to mandatory in Spain. Verifactu is the new regulatory framework requiring invoicing software to guarantee integ…
Read article
Payments
A return policy that reduces disputes instead of increasing them
Most online businesses write their return policy to protect themselves from customers who want to return. With that mindset they create restrictive, confusin…
Read article
PIX
Automatic PIX: recurring billing without depending on cards
Use automatic PIX for digital subscriptions to cut involuntary churn and card dependency.
Read article
PIX
PIX MED refund: what to do when a return hits your account
Understand Brazil’s PIX special return mechanism, evidence, and ops process for fast response.
Read article
Checkout
Transparent checkout vs redirect: what leaving the page costs
Compare transparent and redirect checkout — friction, local methods, order bumps, and attribution.
Read article
Checkout
Checkout Conversion Rate: Where Buyers Drop Off and How to Win Them Back
Here is the frustrating truth about checkout. The people abandoning it already decided to buy. They found you, chose the product, clicked to pay, and then walke
Read article
Checkout
Agentic commerce: ready your checkout for AI buyers
How AI shopping agents buy on customers' behalf and what an agent-ready checkout requires.
Read article
Funnels
Order Bump and Upsell: Raising Average Order Value with the One Click Upsell
The cheapest revenue you will ever make comes from a customer who already has their card out. You spent money getting them to buy. They said yes. And in that na
Read article
Subscriptions
Involuntary Churn: Recovering Revenue Lost to Failed Payments
Voluntary churn hurts, but at least it announces itself. Someone clicks cancel, you see it, you know you lost them. Involuntary churn is quieter and, for many s
Read article
Subscriptions
Subscription billing: design a cycle that retains
How billing cycles shape churn, why annual retains better, and how to recover failed recurring payments.
Read article
Payments
Payment gateway: how to choose the best for digital business
Evaluate gateways beyond headline fees — approval rates, PIX, integration, reconciliation, and cash flow.
Read article
Payments
False-positive fraud prevention: the cost of blocking good sales
How antifraud false positives hurt approval and ROAS — and what to measure to tune risk.
Read article
Payments
Payment split for co-producers and affiliates
Split revenue automatically without spreadsheets — rules, refunds, and reconciliation.
Read article
Payments
Receivables anticipation: the hidden cost of not waiting D+30
Decide when to anticipate receivables — margin, installments, ROAS, and cash flow.
Read article
Payments
Chargeback: how disputes work and how to protect digital sales
Prevent chargebacks on digital products — recognizable checkout, delivery evidence, and support.
Read article
Payments
Refund policy that reduces disputes instead of increasing them
Design a clear refund policy that diverts chargebacks without destroying margin.
Read article
Payments
Payment reconciliation: why your report never matches the acquirer
Align dashboard, acquirer, and cash — fees, splits, refunds, and identifiers.
Read article
Payments
Payment approval rate: why good sales get declined
Why legitimate transactions get declined and what improves authorization rates and payment routing.
Read article
Payments
Chargeback Prevention: Reduce Payment Disputes and Keep a Low Chargeback Ratio
A chargeback feels personal the first time it happens. You made the sale, delivered the product, and then weeks later the money is yanked back out of your accou
Read article
Payments
Settlement Timing: How Payout Schedules Shape Cash Flow and Funding Delays
Most merchants obsess over their transaction rate and barely think about their payout schedule. That is backwards. The difference between a two percent and a tw
Read article
Payments
Effective transaction cost: what you really pay
Calculate your real blended cost per sale beyond the headline rate — fixed fees, declines, and disputes.
Read article
Payments
Payment platform migration without losing subscribers
Migrate subscriptions with stored cards preserved, parallel migration, and safe merchant onboarding.
Read article