RevKeen Documentation
Know what you keep, not just what you earn. The billing and payments platform with acquirer-level margin intelligence — built on Elavon and NMI, with no merchant-of-record markup.
Know what you keep, not just what you earn
RevKeen is the only billing platform that shows you your true margin on every transaction — every interchange cost, every scheme fee, every decline — because we run the whole payments stack. Built on Elavon and NMI, with no merchant-of-record layer adding a markup on top. You see what you actually earn, and you keep more of it.
Why RevKeen
See your real margin
Stripe, Polar and Paddle can't show you your true cost of payments — they are the cost, or they add a merchant-of-record markup on top. RevKeen runs on Elavon as acquirer and NMI as gateway, so every fee is visible. Know your net revenue per customer, per product, per transaction — not just your gross.
You own the merchant relationship
RevKeen is not a merchant of record. Your customers pay you, not a reseller. You keep direct relationships, direct chargeback handling, and direct brand on every statement descriptor. Global tax compliance is handled through our Quaderno integration — you don't give up VAT and sales tax automation to get control back.
The full billing suite Polar doesn't have
Automated dunning with smart retries, customer health scores, wallet credits, Direct Debit (London & Zurich), card-present terminals (PAX A920 Pro), and a branded customer portal. Enterprise-grade billing operations, without enterprise pricing or a procurement cycle.
Priced for operators, not platforms
Polar charges 4% + $0.40 as merchant of record. Paddle is 5% + $0.50. RevKeen is 1.7% + £0.10 per transaction plus a flat monthly subscription — roughly 40% cheaper at £10k/month in volume, and the gap widens as you grow. Worked example below.
How the numbers compare
A worked example on £10,000/month in revenue across 200 transactions:
| Platform | Model | Processing cost | Subscription | Total/month |
|---|---|---|---|---|
| Paddle | Merchant of record | 5% + $0.50 (~£580) | — | ~£580 |
| Polar | Merchant of record | 4% + $0.40 (~£480) | — | ~£480 |
| RevKeen (Pro) | Direct PayFac | 1.7% + £0.10 (~£190) | £119 | ~£309 |
At this volume, RevKeen saves roughly £170/month — over £2,000/year versus Polar, and close to £3,300/year versus Paddle. And because our percentage is lower, every pound of additional revenue you add compounds the saving.
RevKeen plans: Standard £69/mo (150 txn), Pro £119/mo (450 txn), Unlimited £199/mo. All plans include the full billing suite, margin intelligence, and the same 1.7% + £0.10 transaction rate.
What RevKeen handles
Billing automation — Recurring subscriptions, usage-based metering, one-time invoices, and automated dunning so you collect more revenue with less manual work.
Payments — Hosted checkout pages, payment links, card-on-file renewals, refunds, voids, Direct Debit, and card-present terminals — all routed through your Elavon merchant account with NMI as the gateway.
Customer operations — Health scores, a self-service customer portal, wallet credits, and multi-channel notifications (email, SMS, WhatsApp) to keep customers informed and engaged.
Margin intelligence — True net revenue per transaction, product, and customer. Settlement reconciliation. Fee breakdowns at interchange, scheme, and processor levels. This is the view no other platform can give you.
Integrations — Connect CRMs, accounting tools (Xero, QuickBooks), practice management systems (PracticeHub, Wodify), tax automation (Quaderno), and custom workflows via webhooks and our REST API.
Get started in 3 steps
Create your account
Sign up and configure your merchant profile. Account setup →
Connect your Elavon merchant account
We'll guide you through underwriting and NMI gateway setup so you're ready to process. Gateway setup →
Collect your first payment
Create a product, generate a payment link, and get paid. First payment →
Explore by topic
Getting Started
Account setup, gateway configuration, and your first payment
Using RevKeen
Customers, invoices, subscriptions, products, and the dashboard
Money
Payments, refunds, settlements, and financial operations
Operations
Billing automation, dunning, notifications, and workflows
Integrations
Connect RevKeen with CRMs, accounting tools, and webhooks
Developer resources
API Reference
Complete REST API documentation with request/response examples
Fundamentals
Authentication, pagination, idempotency, and error handling
Webhooks
Real-time event notifications for your application
SDKs
TypeScript, Python, and other client libraries
CLI
Command-line tools for managing your RevKeen resources
MCP
Model Context Protocol integration for AI assistants
LLM-friendly documentation
Machine-readable documentation for AI assistants and LLM-powered tools:
llms.txt— Lightweight index of all documentation pages with titles, URLs, and descriptionsllms-full.txt— Complete documentation in plain text, suitable for context injectionopenapi.json— Machine-readable OpenAPI 3.1 specification