How to Set Up the NAB Payment Gateway (Unified Checkout)
Follow this checklist to configure the National Australia Bank (NAB) Unified Checkout (UNC) Payment Gateway for Parent Lounge Account Payment, Events & Payments, Extra Curricular, or the Commercial Debtors Online Payments Portal.
The NAB Unified Checkout is NAB's latest payment gateway for processing both card and digital wallet payments. To configure the older style ‘iFrame/Lightbox’ NAB payment gateway, refer to the guide on How to Set Up the NAB Payment Gateway (iFrame/Lightbox).
The NAB portal instructions in this guide are current as of 8th August 2025. If you notice any changes while completing this process, please inform our Customer Care team so we can update this documentation.
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1 | Contact NAB | To sign up for the NAB Unified Checkout (UNC) Payment Gateway, you must initially complete the 'NAB Merchant Establishment Form' and submit it to the National Australia Bank (NAB) (full instructions are on this form). Click on the following link to access the NAB Gateway Merchant Establishment Form.pdf Important! NAB Merchant IDs are required for your TASS.web setup. You will need a separate Merchant ID for each TASS product that you are implementing:
In Step 6, you must match each Merchant ID to a TASS product. Account Payment Merchant ID: ____________________________ Events & Payments Merchant ID: ___________________________ Extra Curricular Merchant ID: ______________________________ Commercial Debtors Merchant ID: _________________________ | 🔲 | ||||||||||||||||||||
2 | Check your School’s Network Configurations | Ask your System Administrator to review your school’s network configurations listed below. These setups are mandatory for integration with the NAB Unified Checkout Payment Gateway:
For more information on these requirements, please call the NAB Gateway Support Centre on 1300 369 852. | 🔲 | ||||||||||||||||||||
3 | Log in to the NAB Gateway | Log into the NAB Gateway using your NAB issued ‘Merchant ID' (also known as 'Organization ID'), 'Username', and 'Password’. If you do not have these details, contact the NAB Gateway Support Centre on 1300 369 852. | 🔲 | ||||||||||||||||||||
4 | Set up surcharges in the NAB Gateway and TASS.web | This step is optional. You only need to complete it if you plan to add surcharges to transactions processed through your payment gateway (e.g., card processing fees or transaction fees). Go to the NAB Gateway, navigate to Payment Configuration > Differential Fee and configure your surcharging rules. Add rules for any surcharges that will be automatically applied when parents/customers make payments through the Payment Gateway, then ‘Save’. Complete this for each Merchant ID/TASS product that you are setting up. See the ‘Enable surcharges in NAB Gateway' article on the NAB website for more information. Then, go to TASS.web Finance > Parent Accounts > Setup Information > Parent Accounts Setup. On the ‘GL Integration’ tab, verify that the ‘Surcharge Account’ field specifies the account in the General Ledger designated for surcharges from online payments processed through Parent Lounge Account Payment, Extra Curricular and Events & Payments. This ‘Surcharge Account’ is used exclusively for online payments made within the Account Payment, Extra Curricular and Events & Payments programs. You can apply surcharges for Commercial Debtors through your banking portal, but remember that the amount received will not be recorded in a separate GL Account, so this must be tracked separately. The Differential Fees entered in the NAB Portal may take 24 hours to update. Consider this before completing Step 6 and setting up the Payment Gateway in TASS.web. | 🔲 | ||||||||||||||||||||
5 | Generate a Key and Shared Secret for each Merchant ID. | Go to the NAB Gateway, and navigate to Payment Configuration > Key Management. Generate a new ‘Key’ and ‘Shared Secret’ for each Merchant ID by creating a new key and clicking the ‘Generate Key’ option. Important! After generating the key, a ‘Key' and ‘Shared Secret’ will appear on the screen. Please note these and keep them in a secure location. The Shared Secret only displays once. This is your only chance to retrieve it. Account Payment Shared Secret: ___________________________________________ Key: _______________________________________________________ Events & Payments Shared Secret: ____________________________________________ Key: _______________________________________________________ Extra Curricular Shared Secret: ___________________________________________ Key: ______________________________________________________ Commercial Debtors Shared Secret: ___________________________________________ Key: ______________________________________________________ | 🔲 | ||||||||||||||||||||
6 | Set up the Payment Gateway in TASS.web. | Go to TASS.web System Admin > Utilities > API Maintenance. On the ‘External APIs’ tab, click 'View' in the Payment Gateways Action column. If a Payment Gateway is already configured for the TASS Product, click ‘Edit’ next to the relevant 'TASS Product' to display the 'Payment Gateway Parameters' screen. OR To add a new Payment Gateway for a TASS Product, click 'New Payment Gateway' to display a blank 'Payment Gateway Parameters' screen.
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7 | Test your Payment Gateway | Go to TASS.web System Admin > Utilities > API Maintenance. On the ‘External APIs’ tab, click 'View' in the Payment Gateways Action column. To test your Payment Gateway connection, click the ‘Test' link in the relevant ‘TASS Product' Action column. The 'Payment Gateway Providers' pop-up will display the following information:
If this test status returns as ‘Failed’, cross-check the details entered in Step 6, then test again. If it fails again, review your School’s Network Configurations mentioned in Step 2 and test again. If it fails after that, delete your existing Key and Shared Secret in the NAB Gateway, repeat Step 5 to generate new credentials, complete Step 6 with the new credentials and test again. The most common cause of failure is the school firewall blocking communication. Contact the TASS Customer Care team by creating a Software Support request for assistance. | 🔲 | ||||||||||||||||||||
8 | Set up your preferred Payment Options in the NAB Gateway | This step is optional. You only need to complete it if you want to accept payment options other than the default options of Visa, Mastercard, and American Express. To configure the NAB Gateway to accept other payment options, such as Apple Pay, Samsung Pay, Google Pay, and Visa Click to Pay, log into the NAB Gateway and go to Payment Configuration > Digital Payment Solutions. Then, activate and configure your digital payments solutions. See the ‘NAB Gateway digital wallets' article on the NAB website for more information. You may need to complete a registration process for each new payment option. For support, contact the NAB Gateway Support Centre at 1300 369 852. | 🔲 | ||||||||||||||||||||
9 | Complete the remaining steps from the relevant Payment Gateway Checklist | The remaining setup steps are dependent upon which payment gateway portal you have configured:
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