Paystaq
Hosted Checkout · All-in-one

Your checkout.
Optimised end-to-end.

Cashier is a fully hosted, white-label checkout that connects to your MIDs, routes transactions intelligently, and applies Paystaq's three-level approval stack on every payment.

Up to 20%
Higher approval rates
1–2 days
To go live
200+
PSPs supported
Checkout
Secured by Paystaq
Premium Plan × 1€149.00
VAT (19%)€28.31
Total due today€177.31
•••• •••• •••• 4242
MM / YY
•••
256-bit SSL · PCI DSS Level 1
Payment approved
Routed via Acquirer A · 142ms
Decline rescued
UPQS enriched · retried successfully
CAPABILITIES

Everything your checkout needs. Nothing it doesn't.

Cashier handles the full payment stack — from the UI your customers see to the routing decisions that determine whether a transaction succeeds.

Hosted, branded checkout
Deploy a fully hosted checkout page under your own domain. Customise colours, logo, fonts, and layout — no design team required. Works on desktop, mobile, and in-app webview.
UPQS data validation
Every transaction is enriched and validated before it reaches the acquirer. Malformed BINs, missing fields, and mismatched data are corrected automatically — reducing soft declines at the source.
Sentinel ML risk engine
AI-powered risk scoring runs in real time on every transaction. Distinguishes genuine fraud from false positives with models trained on real transaction patterns — preserving revenue without increasing chargebacks.
Smart routing across 200+ PSPs
Transactions are routed to the best-performing acquirer in real time, based on BIN, currency, geography, and live success rates. Failover is automatic when a provider degrades.
Multi-method payment support
Accept cards (Visa, Mastercard, Amex), Apple Pay, Google Pay, SEPA, and local payment methods through a single integration. New methods can be activated without development work.
Analytics & reporting dashboard
Full visibility into approval rates, decline reasons, routing decisions, and revenue recovered. Slice by date, method, geography, or acquirer. Export for reporting or feed into your BI stack.
HOW IT WORKS

From click to confirmation in five steps

Every transaction passes through all three optimisation layers before reaching the acquirer — automatically, every time.

01
Customer reaches checkout
Your customer arrives at the Cashier-hosted page. It loads instantly under your domain, pre-configured with your brand, accepted methods, and any prefilled data you pass via query parameters.
Avg. load time under 800ms. No redirects to third-party domains.
02
UPQS validates the transaction data
Before any authorisation attempt, Paystaq's UPQS layer checks and enriches the transaction — verifying BIN data, correcting field formats, appending missing metadata, and ensuring the payload matches the acquirer's exact requirements.
Fixes malformed data that causes up to 6% of soft declines.
03
Sentinel ML scores the risk
The transaction is scored in real time by Sentinel ML. Genuine fraud is flagged and blocked. Legitimate transactions that would have been wrongly declined by a blunt rule engine are cleared — recovering revenue that would otherwise be lost.
Sub-50ms scoring. Trained on real transaction data.
04
Smart Routing selects the best acquirer
Paystaq selects the optimal acquiring route based on BIN country, transaction amount, currency, card type, and live acquirer performance data. If the primary route fails, automatic fallback routing retries within milliseconds.
Routes across 200+ connected PSPs and acquirers.
05
Transaction is authorised and settled
The payment is authorised and the result — success, failure, or pending — is returned instantly to your system via webhook or API response. Settlement reporting is available in the Cashier dashboard in real time.
Webhooks, real-time reporting, and full audit trail included.
BUILT FOR YOUR INDUSTRY

Cashier is optimised for the hardest payment environments

The same three-level stack, tuned for the specific decline patterns and compliance requirements of each vertical.

iGaming
High-risk specialists

iGaming merchants face the highest decline rates in any vertical — partly due to MCC classification, partly due to blunt fraud rules that can't distinguish a genuine player from a bad actor. Cashier's UPQS validation and Sentinel ML are tuned for high-frequency, high-risk transaction profiles, keeping approval rates up without opening the door to chargebacks.

High-risk MCC support
3DS2 SCA ready
Fraud vs. false-positive tuning
See iGaming solutions
E-commerce
Volume-driven

E-commerce businesses lose revenue at checkout in ways that rarely show up clearly in dashboards — card validation failures, acquirer-specific formatting mismatches, and routing to underperforming providers during peak traffic. Cashier handles all of this automatically, so merchants see higher approval rates without changing anything about their checkout flow.

Multi-currency support
Apple Pay & Google Pay
Peak traffic auto-routing
See E-commerce solutions
PRODUCT PREVIEW

See what you're building with

Three core views of the Cashier platform — the checkout your customers see, the analytics you monitor, and the routing controls you configure.

Checkout
Secured by Paystaq
Premium Plan × 1€149.00
VAT (19%)€28.31
Total due today€177.31
•••• •••• •••• 4242
MM / YY
•••
256-bit SSL · PCI DSS Level 1
GET STARTED

Ready to see Cashier in action?

Book a 30-minute demo and we'll walk you through a live setup tailored to your business — from checkout branding to your first optimised transaction.