Affidavit South Africa: How to Write One [2026]

An affidavit is one of the most common legal documents South Africans are asked to produce, yet most people only learn how to write one when they suddenly need it: to report a lost ID, confirm where they live, or declare a fact for Home Affairs, a bank, or the police. The good news is that an affidavit is simple, free to commission, and you can write one yourself in a few minutes.

This guide explains what an affidavit is, when you need one in South Africa, what a commissioner of oaths does, and how to write and sign one correctly. If you are dealing with an identity matter, you can also check whether a South African ID number is valid with our free tool before you put it in writing.

What Is an Affidavit?

An affidavit is a written statement of fact that you swear or affirm to be true in front of a commissioner of oaths. Once you sign it and the commissioner certifies it, the document becomes a sworn statement that can be used as evidence or proof in legal, government, and administrative matters.

The key word is "sworn". An ordinary letter saying "I confirm that the above is true" carries no legal weight. An affidavit does, because you make the declaration under oath and signing a false affidavit is a criminal offence (perjury). Affidavits in South Africa are governed by the Justices of the Peace and Commissioners of Oaths Act 16 of 1963 and its regulations.

When Do You Need an Affidavit in South Africa?

You will usually be asked for an affidavit when an institution needs a sworn declaration of something it cannot verify from a standard document. Common situations include:

A lost or stolen ID, passport, or driving licence, where Home Affairs or the police need a sworn account of how it went missing.
Proof of residence, when you do not have a utility bill in your own name and someone you live with confirms your address.
Confirmation of identity or details, for example declaring that two different spellings of a name refer to the same person.
Change of personal particulars, such as a name or marital status, alongside the Home Affairs forms.
Banking and compliance checks, where a bank may request a sworn statement as part of its FICA verification process.
SIM card registration, where you confirm your address for RICA if you cannot produce a recent proof of address.
Insurance, employment, and study applications, where a fact has to be declared formally.

What Is a Commissioner of Oaths?

A commissioner of oaths is a person authorised by law to administer oaths and certify affidavits. They confirm your identity, watch you sign, and then sign and stamp the document themselves. Their stamp is what turns your statement into a valid affidavit.

In South Africa you can have an affidavit commissioned free of charge at:

Any South African Police Service (SAPS) station.
Most Home Affairs offices.
Many banks, post offices, and municipal offices.
Practising attorneys, who are commissioners of oaths by virtue of their profession.

Always take your green ID book or smart ID card with you, because the commissioner has to confirm who you are before commissioning the document.

How to Write an Affidavit: Step by Step

You do not need a lawyer or a special form to write an affidavit. You can write it by hand or type it. Follow these steps:

Head the document. Write the word "AFFIDAVIT" at the top so the purpose is clear.
State who you are. Begin with your full names, your South African ID number, and your residential address. For example: "I, the undersigned, [Full Name], identity number [13 digits], residing at [address], hereby make oath and state that:".
Set out the facts. Use short, numbered paragraphs. Stick to facts you know to be true and keep them in a logical order. Do not include opinions or anything you cannot stand behind.
Close the statement. End with a line confirming that the contents are true and correct to the best of your knowledge.
Leave room for signatures. Add a space for your signature and the date, and a block for the commissioner of oaths to sign and stamp.
Do not sign in advance. You must sign in front of the commissioner, not before. If you sign at home, you will be asked to sign again.
Take it to a commissioner of oaths. Bring your ID, swear or affirm that the contents are true, and sign. The commissioner then certifies and stamps it.

Affidavit Format: What to Include

Whether you are looking for an "affidavit form" or writing your own, a valid South African affidavit contains the same core elements:

The heading "Affidavit".
Your full names, ID number, and address (the deponent's details).
The words "make oath and state" or "truly affirm and state".
The numbered facts you are declaring.
Your signature and the date.
The commissioner of oaths certification, including their full name, designation, address, and official stamp.

A handwritten affidavit is just as valid as a typed one, as long as it is legible and contains these elements. You do not have to pay for a template.

Affidavit for a Lost ID

One of the most common reasons South Africans need an affidavit is a missing identity document. If your ID is lost or stolen, Home Affairs will ask for a sworn statement explaining what happened before issuing a replacement. Our full guide on how to replace a lost ID card in South Africa walks through the process, the BI-9 form, and the fees.

Your affidavit should state that the document was lost or stolen, when and where you last had it, and that you are applying for a replacement. If you still remember your ID number, you can confirm it is a valid South African ID number before you submit your application, which helps avoid errors on the form.

Common Mistakes to Avoid

A few simple errors cause most rejected affidavits:

Signing before you reach the commissioner. The oath has to be administered as you sign.
Leaving out your ID number or address. The deponent must be clearly identified. You can find yours on your green ID book or smart card, explained in our guide to the South African ID number format.
Declaring things you are not sure of. A "sworn affidavit" must contain facts, not guesses. Remember that a false affidavit is a criminal offence.
Forgetting the commissioner's stamp. Without the official stamp, the document is not a valid affidavit.

Because an affidavit carries your ID number and personal details, treat it like any sensitive document. South Africa's privacy law, explained in our article on POPIA and your ID number, gives you rights over how that information is handled.

Frequently Asked Questions

How much does an affidavit cost in South Africa?

Nothing. Commissioning an affidavit at a police station, Home Affairs office, bank, or post office is free. You only pay if you ask an attorney to draft a complex statement for you.

Can I write my own affidavit?

Yes. You can write or type your own affidavit. It only becomes valid once you sign it in front of a commissioner of oaths, who then certifies and stamps it.

Where can I get an affidavit stamped?

At any SAPS station, most Home Affairs offices, many banks and post offices, and at any practising attorney. Take your ID document with you.

How long is an affidavit valid for?

An affidavit does not expire, but the institution receiving it may require a recent one. Many banks and government departments will only accept an affidavit that is less than three months old.

What is the difference between an affidavit and a sworn statement?

They are effectively the same thing in South Africa. An affidavit is a sworn (or affirmed) statement of fact made before a commissioner of oaths.

Do I need an affidavit to verify an ID number?

No. Verifying that an ID number is structurally valid is something you can do instantly. Use our free South African ID validator to check the date of birth, gender, citizenship, and checksum digits before you commit anything to an affidavit.

For more on identity documents and government services, see our complete guide to the South African ID number format. You can read the legislation governing commissioners of oaths on the Department of Justice website, and a general overview of affidavits on Wikipedia.