An invoice due date beats a payment term. Payment terms: 30 days requires the reader to do arithmetic. Payable by 26 September 2026 does not. Put the date on the invoice, every time.
Where the invoice due date should come from
Not from a default. From the client's payment cycle.
- Corporate and government: usually 30 days, often paid on a monthly run rather than on your date.
- Small businesses: 7 to 14 days is normal and usually accepted.
- New clients: shorter, or a deposit, until there is a payment history.
- Retainers: due at the start of the period, not the end.
The cut-off matters more than the term
If a client pays on the 25th and requires invoices by the 15th, an invoice dated the 16th with 30-day terms will not be paid on the 15th of next month. It will be paid on the 25th of the month after, which is closer to 40 days.
Ask two questions when onboarding any corporate client: when is your payment run, and what is the cut-off? Then date your invoices to land before it.
Counting from the right day
| Term | Due date is |
|---|---|
| Net 30 from invoice date | 30 days after you issued it |
| 30 days from statement | 30 days after month end, so up to 60 days total |
| 30 days end of month | End of the month following the invoice |
The second and third are common with larger clients and are meaningfully longer than they sound. Read what the client's terms actually say before you assume Net 30 means 30 days.
Put it where it is seen
Next to the total, not in the footer. The two figures a client looks at are the amount and the date. Everything else on the invoice is there for their accounts department, not for them.
Common questions
Can I set a shorter due date than the client's standard terms?
You can state it, but a large client will pay on their cycle regardless. Negotiate terms at onboarding rather than on each invoice.
What if the due date falls on a weekend?
Most businesses pay the preceding business day or the next one. It rarely matters, but avoid dating anything critical to a Sunday.
Should the due date be on the quotation too?
State the payment terms there. The specific date only exists once the invoice is issued.
Set your default terms once and every invoice carries a calculated due date.
Create your invoiceDisclaimer: This content is for general information only and does not constitute legal, tax, accounting or financial advice. Always confirm important requirements with SARS, the relevant authority or a qualified professional.
