What must be on a tax invoice in South Africa?

A tax invoice is a specific document under the Value-Added Tax Act 89 of 1991. It is what allows your VAT registered customer to claim the VAT back, and it is what supports your own records. It is not simply any piece of paper with an amount on it.

A full tax invoice must contain all of the following:

• the words "tax invoice", "VAT invoice" or "invoice" in a prominent place
• the supplier's name, address and VAT registration number
• the recipient's name and address, and, above the threshold the Act sets for a full tax invoice, the recipient's VAT registration number
• an individual serialised invoice number and the date the invoice was issued
• a description and quantity of the goods or services supplied
• the value of the supply, the VAT charged and the total, or the total including VAT with a statement that it includes VAT at the applicable rate

If you are not registered for VAT, none of this applies to you, and you must not issue a tax invoice or charge VAT. You issue an ordinary invoice with no VAT on it, and no VAT number, because you do not have one. Issuing a document that looks like a tax invoice when you are not registered is a serious matter.

How it works step by step

Step one: know whether you are registered. VAT registration becomes compulsory once your taxable supplies exceed the threshold the Value-Added Tax Act sets, and voluntary registration is possible at a lower level. Both thresholds are set by law and administered by the South African Revenue Service, and they change, so check the current figures on the Service's website rather than relying on a number in an article.

Step two: decide full or abridged. Above the threshold the Act sets, you must issue a full tax invoice with all the details listed above, including the recipient's VAT number. Below that threshold you may issue an abridged tax invoice, which drops some of the recipient details. A supermarket till slip is the everyday example of an abridged invoice. If in doubt, issue the full version, because a full tax invoice is always acceptable.

Step three: number the invoices properly. "Individual serialised" means each invoice gets its own number, in a sequence, with no duplicates and no gaps you cannot explain. Accounting software does this automatically. A book of manual invoices works too, as long as you do not restart the numbering each month in a way that creates duplicates.

Step four: describe the supply properly. "Services rendered" is not a description. "Site inspection and drainage report, 12 Marine Drive, 8 hours" is. Quantity matters for goods.

Step five: show the maths. Either show the value before VAT, the VAT amount and the total, or show the VAT inclusive total together with a statement that the price includes VAT at the applicable rate. Do not leave the customer to work it out.

Step six: issue it on time and keep it. Tax invoices must be issued within the period the Act allows, and you must keep copies for the record retention period the South African Revenue Service requires. Electronic copies are acceptable if they are readable and retrievable.

Step seven: handle corrections properly. If you overcharge or undercharge, or a customer returns goods, you issue a credit note or a debit note, traceable to the invoice it corrects. You do not quietly reissue the original.

Illustrative example: a small engineering consultancy

The example is illustrative only.

Khumalo Engineering Consultants is a VAT registered private company. It bills a construction client for a structural inspection. The invoice reads:

• "Tax invoice" at the top
• Khumalo Engineering Consultants (Pty) Ltd, 14 Oak Road, Bloemfontein, VAT registration number shown in full
• Client name and street address, and the client's VAT number, because the amount is above the threshold for a full tax invoice
• Invoice number KEC-2026-0148, dated with the day it was issued
• Description: "Structural inspection and report, Erf 2211 Brandwag, 14 hours at the agreed hourly rate"
• Value of supply R21 000, VAT at the applicable rate shown as a separate line, and the total

Two weeks later the client points out that two hours were billed in error. Khumalo issues a credit note referring to invoice KEC-2026-0148, describing the correction and showing the VAT portion reversed. The credit note carries its own number in its own sequence. Both documents stay in the file.

Had Khumalo simply deleted the invoice and issued a new one with the same number, the client's own VAT records would not reconcile and the missing number would show up in any review.

What to do this week

1. Pull your last five invoices and check them against the list at the top of this guide. Most small businesses find at least one item missing.
2. Fix the template. Add the words "tax invoice", your VAT number and a proper description field.
3. Check your numbering for duplicates and unexplained gaps.
4. Add your business address, not just a post box or an email signature.
5. Confirm whether you are actually registered for VAT, and if not, remove every reference to VAT from your invoices immediately.
6. Collect your customers' VAT numbers and addresses now, so you are not chasing them at year end.
7. Set up a credit note template with its own number sequence.
8. Decide where copies live and make sure they are backed up. Customer records are personal information under the Protection of Personal Information Act 4 of 2013, so read does POPIA apply to my small business.

Documents and records to set up

• A tax invoice template containing every required item, in your accounting software or as a locked document.
• An abridged invoice format if you make small value supplies to walk in customers.
• A credit note and debit note template, each with its own sequence.
• A customer master file with each customer's full legal name, street address and VAT number.
• A numbered invoice register, which your accounting software generates automatically.
• Copies of every invoice issued and every tax invoice received, kept for the retention period the South African Revenue Service requires.
• Quotes and signed acceptances, because a quote is not a tax invoice but it is your evidence of the agreed scope. See what should be in a basic supplier or service contract and the basic service agreement template.
• A delivery or completion record linking the invoice to the work actually done.

Realistic timeline

• Day one: audit your last five invoices and list what is missing.
• Day two: rebuild the template and the credit note template.
• Week one: email customers to collect missing VAT numbers and addresses.
• Weeks two to four: correct anything issued in the current VAT period, using credit notes and reissued invoices rather than edits.
• Ongoing: review annually and whenever your address, name or registration status changes.

If you have been issuing defective invoices for years, speak to your accountant before doing anything wholesale, because correcting historic periods has its own process.

Common mistakes and what they cost

• Charging VAT when you are not registered. This is the most serious error on the list. A business that is not registered may not issue a tax invoice or charge VAT at all, and the amounts collected are recoverable from you.
• No VAT number on the invoice. Your customer cannot claim the input VAT, which means they will send the invoice back, delay payment, or claim and then be disallowed.
• Missing the recipient's details. Above the threshold for a full tax invoice you need the customer's name, address and VAT number. An invoice made out to "cash" fails.
• Duplicate or reused invoice numbers. It breaks the serialisation requirement and is the first thing a reviewer looks for.
• Vague descriptions. "Consulting, R45 000" invites questions about whether the supply happened and what it was.
• Editing an issued invoice. Corrections go on a credit note. Changing the original destroys the audit trail on both sides.
• Confusing a quote, a pro forma and a tax invoice. A pro forma is not a tax invoice and does not entitle anyone to claim VAT.

The cost is rarely a single dramatic penalty. It is disallowed input VAT for your customers, invoices that sit unpaid because they cannot be processed, and interest and penalties on your own account. Customers who will not pay for other reasons are dealt with in how to recover a debt from a customer who will not pay.

If you cannot afford an attorney

You do not need one for invoicing. This is accounting and tax administration, not litigation. The South African Revenue Service publishes free guides on VAT and on what a tax invoice must contain, and its contact centre and branches answer registration questions. Most small business accounting packages produce compliant invoices out of the box once you enter your VAT number. The Small Enterprise Development Agency runs free and subsidised support that covers invoicing and bookkeeping basics. The Companies and Intellectual Property Commission's own portal gives you the registered name and number to put on the invoice. University law clinics assist small businesses in several centres, and a bookkeeper is usually a better and cheaper first call than an attorney. Legal Aid South Africa deals with individuals rather than business tax matters.

Frequently asked questions

Can I issue a tax invoice if I am not VAT registered? No. Only a VAT registered vendor may issue a tax invoice or charge VAT. You issue a normal invoice with no VAT and no VAT number.

What is an abridged tax invoice? A shorter version allowed for supplies below the threshold the Value-Added Tax Act sets. It omits some of the recipient's details. Above that threshold you must issue a full tax invoice including the recipient's VAT number.

Does an emailed PDF count? Yes. There is no requirement that the invoice be on paper, as long as it contains everything required and you keep a retrievable copy for the retention period.

What if my customer refuses to give me their VAT number? For a full tax invoice you need it. Explain that without it they cannot claim the input VAT, which usually resolves the matter quickly.

Do I need to put payment terms on it? Not as a VAT requirement, but you should, because your payment terms and interest on overdue amounts come from your contract, not from the invoice.

What about a customer deposit? VAT timing on deposits and progress payments has its own rules. Ask your accountant rather than guessing, and see what small business and POPIA compliance costs for a sense of what professional help costs.