BANKpay+ for WooCommerce enables your store to accept instant SEPA bank transfers with settlement in just 7 seconds. No card fees, no chargebacks, just instant bank-to-bank payments.

Why Choose BANKpay+ Over Card Payments?

Save Money

Credit card fees: 1.5-3.5% per transaction
BANKpay+ fees: Starting at 0.5% (save up to €2,500/month on €100k revenue)
No monthly fees, no setup costs

Get Paid Instantly

Settlement time: 7 seconds (vs. 2-7 days with cards)
Same-day access to your money
Improved cash flow management

Zero Chargeback Risk

Bank transfers are final and irreversible
No fraudulent chargebacks
No chargeback fees (typically €15-25 each)

Better Customer Experience

No card details required
Works with all European banks (3000+ institutions)
Mobile-first payment flow
One-click payments for returning customers

Features

Payment Processing

Instant Settlement – Money in your account within 7 seconds
Low Fees – Significantly lower than card processing fees
No Chargebacks – Bank transfers are final and secure
EU Coverage – Accept payments from customers across Europe
Refunds – Process refunds directly from WooCommerce
IBAN Validation – Real-time validation with MOD-97 checksum (70+ countries)
Returning Customers – One-click payment with saved bank selection

Admin Experience

Analytics Dashboard – Comprehensive payment analytics with Chart.js visualizations
Transaction Management – View all BANKpay+ payments in dedicated admin panel
Payment Dashboard – Real-time statistics (today, week, month, all-time)
Performance Metrics – Success rates, volume trends, and processing times
Bank Analytics – Top performing banks with usage statistics
CSV Export – Download analytics data for external analysis
Order Details – Payment information displayed on order edit screen
WordPress Dashboard Widget – Quick overview of payment activity
Search & Filter – Find transactions by status, customer, or order number

Security & Reliability

Bank-Grade Security – Webhook signature verification and HMAC authentication
Rate Limiting – Automatic protection against webhook abuse
Replay Protection – Timestamp validation prevents duplicate processing
CSRF Protection – All admin actions protected with capability checks
Security Headers – CSP, HSTS, X-Frame-Options, and more

Developer Friendly

Test Mode – Sandbox environment for testing
HPOS Compatible – Full support for High-Performance Order Storage
WordPress Standards – Follows WordPress and WooCommerce coding standards
Extensible – Hooks and filters for customization
REST API – Public endpoint for IBAN validation

Requirements

WooCommerce 8.0 or higher
PHP 8.0 or higher
WordPress 6.0 or higher
BANKpay+ merchant account (Sign up here)

How It Works

Customer selects BANKpay+ at checkout
Customer is redirected to select their bank
Customer authorizes payment in their banking app
Payment is confirmed and settled instantly
Customer is returned to your store

Get Started in 5 Minutes

Install – Download from WordPress.org or search in your admin panel
Activate – Click “Activate” in your plugins list
Connect – Run the setup wizard (WooCommerce Settings Payments BANKpay+)
Test – Place a test order to verify everything works
Go Live – Switch from test mode to live mode

Easy Setup: Our guided setup wizard walks you through every step. No technical knowledge required!

Translations

BANKpay+ for WooCommerce is fully translated and available in 6 languages:

English (en_US) – Default, 100% complete
German (de_DE) – Deutsch, 100% complete (~98 strings)
Italian (it_IT) – Italiano, 100% complete (~98 strings)
Portuguese (pt_PT) – Português, 100% complete (~98 strings)
Spanish (es_ES) – Español, 100% complete (~98 strings)
Greek (el) – Ελληνικά, 100% complete (~98 strings)

Contributing Translations

We welcome translation contributions! You can contribute in two ways:

Via WordPress.org (recommended)
Visit: https://translate.wordpress.org/projects/wp-plugins/bankpay-open-banking-sepa-payments-for-woocommerce/
Translations submitted via GlotPress are automatically included in language packs.
Via GitHub
Fork the repository, translate the PO files in the languages/ directory, and submit a pull request.
See languages/README.md for detailed translation guidelines.

Translation Credits

German: BANKpay+ Team (based on BANKpay+ application translations)
Italian: BANKpay+ Team (professional translation)
Portuguese: BANKpay+ Team (professional translation)
Spanish: BANKpay+ Team (professional translation)
Greek: BANKpay+ Team (professional translation for compliance market)

Thank you to all translators for making BANKpay+ accessible to users across Europe!

For Translators

Total strings to translate: 309
– PHP strings: ~271 (admin interface, settings, error messages)
– JavaScript strings: ~38 (customer-facing UI, validation feedback)

Key terminology:
– “Instant Bank Transfer” “SEPA-Sofortüberweisung” (DE)
– “Settlement” “Abwicklung” (DE)
– “Bank-grade security” “Bank-Level Sicherheit” (DE)

For complete translation guidelines, glossary, and context notes, see:
languages/README.md in the plugin directory

For Developers

BANKpay+ is built with developers in mind, featuring extensive hooks, filters, and well-documented APIs for customization and integration.

Architecture

Design Patterns:

Dependency Injection Container
Repository Pattern for order operations
Observer Pattern for webhook events
Strategy Pattern for payment flows

Key Components:

WC_Gateway_BANKpay_Plus – Main gateway class extending WC_Payment_Gateway
BANKpay_Plus_API – RESTful API client with retry logic
BANKpay_Plus_Webhook – Webhook handler with signature verification
BANKpay_Plus_Analytics – Payment metrics and reporting
BANKpay_Plus_IBAN_Validator – MOD-97 validation with 70+ country support

API Integration

Authentication:

Authorization: Bearer {access_token}
X-API-Key: {api_key}
X-HMAC-Signature: {hmac_sha256}

Create Checkout Session:

POST /api/checkout/create
{
  "amount": 100.00,
  "currency": "EUR",
  "reference": "Order #123",
  "return_url": "https://yourstore.com/checkout/thank-you",
  "webhook_url": "https://yourstore.com/?wc-api=wc_gateway_bankpay_plus"
}

Webhook Payload:

POST /?wc-api=wc_gateway_bankpay_plus
{
  "event": "checkout.completed",
  "checkout_id": "chk_123",
  "payment_id": "pay_456",
  "status": "completed",
  "timestamp": "2025-01-26T15:30:00Z"
}

Hooks & Filters

Actions (Execution Points):

bankpay_plus_payment_initiated – Fires when payment initiates
bankpay_plus_payment_complete – Fires when payment completes
bankpay_plus_payment_failed – Fires when payment fails
bankpay_plus_refund_completed – Fires when refund processes
bankpay_plus_webhook_received – Fires on webhook receipt
bankpay_plus_webhook_verified – Fires after signature verification
bankpay_plus_webhook_failed – Fires on webhook error
bankpay_plus_analytics_event – Fires on analytics tracking

Filters (Data Modification):

bankpay_plus_gateway_title – Customize payment method title
bankpay_plus_gateway_description – Customize checkout description
bankpay_plus_payment_button_text – Customize payment button text
bankpay_plus_checkout_data – Modify checkout session data
bankpay_plus_api_endpoint – Change API endpoint URL
bankpay_plus_api_timeout – Adjust API request timeout (default: 30s)
bankpay_plus_iban_valid – Override IBAN validation result
bankpay_plus_bank_list_cache_ttl – Adjust bank list cache (default: 24h)
bankpay_plus_webhook_rate_limit – Adjust webhook rate limit (default: 50/min)
bankpay_plus_verify_webhook_signature – Toggle signature verification

Code Examples

Example 1: Custom Payment Completion Logic

add_action('bankpay_plus_payment_complete', 'my_custom_payment_handler', 10, 2);

function my_custom_payment_handler($order_id, $payment_data) {
    $order = wc_get_order($order_id);

    // Send custom confirmation email
    wp_mail(
        $order->get_billing_email(),
        'Payment Confirmed - Instant Delivery',
        'Your payment was processed in 7 seconds!'
    );

    // Trigger fulfillment webhook
    wp_remote_post('https://warehouse.example.com/fulfill', [
        'body' => json_encode([
            'order_id' => $order_id,
            'payment_method' => 'bankpay_instant'
        ])
    ]);
}

Example 2: Customize Gateway Title

add_filter('bankpay_plus_gateway_title', 'custom_gateway_title', 10, 2);

function custom_gateway_title($title, $order_id) {
    return $title . ' (Money in 7 seconds)';
}

Example 3: Validate Custom Business Rules

add_filter('bankpay_plus_checkout_data', 'add_business_rules', 10, 2);

function add_business_rules($data, $order) {
    // Add custom validation for high-value orders
    if ($order->get_total() > 1000) {
        $data['require_phone_verification'] = true;
    }

    // Add custom metadata
    $data['merchant_reference'] = get_option('custom_order_prefix') . $order->get_id();

    return $data;
}

Example 4: Track Conversions in Analytics

add_action('woocommerce_thankyou', 'track_bankpay_conversion', 10, 1);

function track_bankpay_conversion($order_id) {
    $order = wc_get_order($order_id);

    if ($order->get_payment_method() === 'bankpay_plus') {
        do_action('my_analytics_track', [
            'event' => 'instant_payment_completed',
            'value' => $order->get_total(),
            'settlement_time' => '7_seconds'
        ]);
    }
}

REST API Endpoints

IBAN Validation:

POST /wp-json/bankpay-plus/v1/validate-iban
{
  "iban": "DE89370400440532013000"
}

Response:
{
  "valid": true,
  "country": "DE",
  "bank_code": "37040044",
  "checksum_valid": true,
  "formatted": "DE89 3704 0044 0532 0130 00"
}

Rate Limiting: 10 requests per minute per IP address
Caching: Validation results cached for 30 days
Algorithm: MOD-97 checksum validation for 70+ countries

Database Schema

Analytics Table: {$wpdb->prefix}bankpay_plus_analytics

CREATE TABLE wp_bankpay_plus_analytics (
  event_id BIGINT AUTO_INCREMENT PRIMARY KEY,
  order_id BIGINT NOT NULL,
  checkout_uuid VARCHAR(100),
  event_type VARCHAR(50) NOT NULL,
  event_timestamp DATETIME NOT NULL,
  order_total DECIMAL(10,2),
  currency VARCHAR(3),
  customer_email VARCHAR(100),
  bank_connector_id INT,
  bank_name VARCHAR(255),
  processing_time_ms INT,
  is_returning_customer TINYINT(1),
  user_agent_hash VARCHAR(64),
  INDEX idx_order_id (order_id),
  INDEX idx_event_type (event_type),
  INDEX idx_event_timestamp (event_timestamp)
);

Testing

PHPUnit Test Suite:

cd wp-plugin/bankpay-plus-woocommerce
composer install
./vendor/bin/phpunit --testsuite unit
./vendor/bin/phpunit --testsuite integration

Code Quality:

composer phpcs          # Check WordPress coding standards
composer phpcbf         # Auto-fix coding standards
composer phpstan        # Static analysis (level 8)

Makefile Commands:

make test-all          # Run all tests
make lint              # Check coding standards
make format            # Auto-fix code style
make phpstan           # Static analysis

Security Considerations

Webhook Signature Verification:

Automatic HMAC SHA-256 verification ensures webhook authenticity. Invalid signatures are rejected with HTTP 403.

Rate Limiting:

Webhooks: 50 requests/minute per IP
IBAN validation: 10 requests/minute per IP
Automatic blocking with exponential backoff

Data Protection:

All input sanitized with sanitize_text_field(), sanitize_url()
All output escaped with esc_html(), esc_url(), esc_attr()
No sensitive data in logs (automatic redaction)
GDPR compliant (SHA-256 hashing for personal data)

Documentation

In Plugin Directory:

README.md – Quick start and overview
DEVELOPER_GUIDE.md – Architecture and contribution guidelines
API_INTEGRATION_GUIDE.md – Step-by-step API integration
TESTING_GUIDE.md – Unit, integration, and E2E testing
WARP.md – AI assistant integration guide

Online Resources:

GitHub: https://github.com/k42/WooCommerce
API Docs: https://docs.bankpay.plus/api
Support: https://wordpress.org/support/plugin/bankpay-open-banking-sepa-payments-for-woocommerce/

Contributing

We welcome contributions! Please see CONTRIBUTING.md in the plugin directory for:

Code style guidelines (WordPress + WooCommerce standards)
Testing requirements (PHPUnit coverage)
Pull request process
Security disclosure policy

Found a bug? Report it on the WordPress.org support forum

BANKpay+ for WooCommerce