Invoice payment terms in South Africa: what sole traders need to know

Cash flow is the number one killer of small businesses. Your payment terms are the first line of defence.

What are payment terms?

Payment terms are the agreed conditions under which you expect to be paid. They appear on your invoice and, when agreed upfront, form part of the contract between you and your client.

The most common formats:

Due on receiptPayment is due immediately when the invoice is received. Common for one-off jobs with new clients.

Net 7 / Net 14Payment is due 7 or 14 days after the invoice date. Good for regular clients in high-frequency industries.

Net 30The most common standard in South Africa. Payment due 30 days after invoice date. Common in corporate procurement.

Net 60 / Net 90Used in large corporate or government contracts. Puts significant strain on small business cash flow, so avoid if you can.

EOM (End of Month)Payment due at the end of the month in which the invoice was issued. Common in retail supply chains.

What terms should you use?

As a sole trader, your default should be Net 14 or Net 30. Shorter terms help your cash flow; longer terms may be required by large clients but should be avoided where possible.

A few practical rules:

→State your terms clearly on every invoice. Don't assume the client knows when payment is due.
→Agree terms before starting work, not after the invoice is sent. Your terms should be in your quote, your contract, or at minimum confirmed in writing.
→Consider "due on receipt" for new clients until trust is established.
→Large corporate clients often have their own payment cycles (30, 60, or 90 days). Negotiate, since they may be willing to move faster for smaller suppliers.

Are payment terms legally enforceable in South Africa?

Yes, if they were agreed to, either explicitly (in a written contract or quote) or implicitly (the client received the invoice with the terms and did not object). South African contract law under the common law of contract recognises payment terms as binding once both parties have agreed to them.

In practice, this means:

→If a client ignores your payment terms, you can pursue the debt through the Small Claims Court (for amounts up to R20 000) or through a civil magistrate's court.
→Having a signed quote or purchase order that references your terms strengthens your position significantly.
→The National Credit Act (NCA) governs credit agreements but generally does not apply to standard B2B invoicing for services. Your payment terms are governed by the common law of contract.

What to do when a client pays late

Late payment is common and frustrating. A structured approach works better than reactive chasing:

1 day overdue

Send a polite payment reminder. Many late payments are accidental, and a quick email with the invoice attached resolves most.

7 days overdue

Follow up directly, by phone or email. Confirm they received the invoice and check whether there are any issues they haven't raised.

14–21 days overdue

Send a formal demand noting that the account is now overdue and that you reserve the right to charge interest or suspend services.

30+ days overdue

Consider a letter of demand from an attorney, or file in the Small Claims Court (amounts up to R20 000). For larger amounts, consult an attorney.

Tip:You can include a late payment interest clause in your terms (e.g. "Interest of 2% per month will apply to overdue amounts"). Whether you enforce it or not, it signals professionalism and often encourages faster payment. Ensure this is stated on your invoice and agreed upfront.

How to protect your cash flow

Beyond setting the right terms, a few practices make a real difference:

✓Invoice immediately. The payment clock starts when the invoice is received, not when you get around to sending it.
✓Include your banking details clearly on every invoice. Ambiguity is a common excuse for non-payment.
✓Ask for a deposit upfront for large or long projects. 30 to 50% before work begins is reasonable and common.
✓Keep records. Save every invoice, quote, and written communication. These are your evidence if a dispute arises.

Put your terms on every invoice

SortedNexus lets you set your default payment terms (Net 7, Net 14, Net 30, or custom) and prints the due date and terms clearly on every invoice PDF.

Create a free invoice →

Sources

Disclaimer: This guide is for general information only and does not constitute legal or financial advice. Consult a qualified attorney or financial advisor for advice on your specific situation.