How to Connect PayFast with Kit (ConvertKit) for South African Legal Services Businesses
South African Tool
PayFast
South Africa's most widely used payment gateway, supporting EFT, credit cards, SnapScan, and more.
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Global Tool
Kit (ConvertKit)
Email marketing platform built for creators, course sellers, and digital product businesses.
Why this matters in South Africa
South African law firms bill by the hour but lose 35% of billable time to non-billable admin: trust account reconciliations, FICA compliance onboarding, and file management across systems that do not communicate with each other.
Compliance note: Legal practices must comply with the Legal Practice Act 28 of 2014, the FICA Act for client due diligence, and the Rules of the Legal Practice Council. Trust accounts are subject to mandatory annual audits under the Attorneys Act.
South African law firms often lose billable hours to manual administrative tasks like chasing retainer payments and updating client records across disparate systems. By integrating PayFast with Kit, your firm can automate the transition from a successful ZAR payment to a segmented client communication workflow, ensuring that once a client settles a fee or retainer, they are automatically tagged in Kit for specific matter-related updates. This data flow eliminates the manual reconciliation of payment notifications against email lists, allowing your team to focus on billable legal work rather than data entry. Crucially, this integration must be architected to respect POPIA and FICA requirements; by using middleware to route only necessary contact data while keeping sensitive financial records within your accounting software, you maintain compliance with the Legal Practice Council’s data retention standards while simultaneously professionalizing your client onboarding experience.
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How to add PayFast to Kit (ConvertKit)
- 1
1. Create a dedicated Zapier or Make account to serve as the secure middleware between PayFast and Kit, as neither platform offers a native direct integration. Ensure this account is registered under the firm’s legal entity to maintain a clear audit trail for annual trust account inspections.
- 2
Within your PayFast dashboard, navigate to the 'Integration' settings to locate your Merchant ID and Merchant Key, which are required to authenticate the connection. Store these credentials in a secure vault, as they provide access to your firm’s transaction data and must be protected under FICA-related internal security policies.
- 3
Set up a 'Webhook' trigger in PayFast that listens for the 'payment_successful' event, ensuring the system only initiates a workflow when funds have been cleared in ZAR. This prevents your firm from triggering client communications for failed or pending transactions that do not yet satisfy the Legal Practice Act’s requirements for trust deposits.
- 4
Configure your middleware to map the PayFast 'custom_str1' or 'custom_str2' fields to the client’s unique matter number or file reference. This ensures that every payment event is tied to a specific legal file, which is essential for the mandatory annual audits required by the Attorneys Act.
- 5
In Kit, create a custom field specifically for 'Matter Status' or 'Payment History' to store the data passed from PayFast. Ensure this field is configured to hold only non-sensitive metadata, keeping actual bank details or FICA-sensitive documents strictly within your secure practice management software.
- 6
Build a filter in your middleware to verify that the incoming data includes a valid email address and a unique identifier before pushing it to Kit. This step is vital for POPIA compliance, as it ensures you are only processing data for clients who have provided explicit consent for electronic communication.
- 7
Map the PayFast transaction status to a specific 'Subscriber Tag' in Kit, such as 'Retainer Paid' or 'Invoice Settled'. This allows you to automatically trigger automated email sequences that provide the client with their next steps, such as a request for FICA documentation or a confirmation of the next consultation date.
- 8
Conduct a test transaction using a small ZAR amount to verify that the data flows correctly from PayFast to the specific Kit subscriber profile. Document this integration process in your firm’s internal compliance manual to demonstrate to the Legal Practice Council that your digital workflows maintain the integrity of your trust account records.
Free calculator
Are you still doing admin manually?
Calculate what it's costing your business in rands
Frequently asked questions
Is PayFast compatible with Kit (ConvertKit)?
Yes. PayFast and Kit (ConvertKit) can be connected via their APIs or through automation tools like Zapier. This guide covers the exact process for South African legal services businesses.
How long does the setup take?
Most businesses complete the initial setup in 1–3 hours. If you already have active accounts on both platforms, you can have a basic automation running in under an hour.
Do I need a developer?
Not for basic Zapier-based integrations. Custom API integrations will need development support. Melamu Tech Ventures builds these — get in touch if you need a tailored solution.