Should a small business register for VAT voluntarily?

It depends. Voluntary registration lets you claim input VAT on your purchases, which helps if your customers are mostly VAT-registered businesses. But it adds the admin of charging VAT, filing returns and keeping valid tax invoices, and it makes your prices 15% higher to non-VAT customers. Weigh the input-VAT benefit against the compliance cost.

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VAT & SARS · Updated June 2026 · ~6 min read

How to register for VAT in South Africa

Q: When must I register for VAT in South Africa?

Registration is compulsory once your taxable supplies (turnover) exceed R1 million in any consecutive 12-month period, or where you are contractually bound to exceed it within 12 months. You can register voluntarily once your taxable supplies have exceeded R50,000 in the past 12 months.

Q: How do I register for VAT with SARS?

You register through SARS eFiling (or at a SARS branch by appointment) using the VAT101 application. You'll need your income-tax number, business and banking details, proof of address, ID, and proof you meet the turnover threshold such as invoices or financial statements. SARS issues a VAT number once the application is approved.

Crossing the VAT threshold, or thinking about registering voluntarily? Here's exactly when you have to register, when it's worth doing early, the documents SARS wants, and the eFiling steps — without the jargon.

The short version

Compulsory once taxable turnover passes R1 million in any 12-month period.
Voluntary registration is allowed once you've passed R50,000.
You apply on SARS eFiling with the VAT101 and supporting documents.
Once registered you must charge VAT, file returns and keep valid tax invoices.

When do you have to register?

VAT registration in South Africa is driven by your taxable supplies — broadly, your business turnover from sales that aren't exempt. There are two thresholds:

Threshold	What it means
R1 million	Compulsory. Once your taxable supplies exceed R1 million in any consecutive 12-month period — or you've signed a contract that will take you over within 12 months — you must register.
R50,000	Voluntary. Once your taxable supplies have passed R50,000 in the past 12 months, you may choose to register.

The R1 million test is a rolling 12 months, not your financial year — so watch your trailing turnover, not just the annual total. Register within the period SARS requires after you cross the line, or you risk penalties and interest.

Should you register voluntarily?

Below R1 million, registering is a judgement call. The upside is that you can claim input VAT on your business purchases. The downside is the admin and the price effect on your customers.

It usually makes sense if:

Your customers are mostly VAT-registered businesses — they reclaim the VAT you charge, so your prices don't really rise for them, and you get to claim your own input VAT back.
You buy a lot of VAT-bearing stock or equipment and want to reclaim that input VAT.

It usually doesn't if your customers are mainly the public or non-registered small businesses — adding 15% can make you less competitive, for limited input-VAT gain.

Documents you'll need

Have these ready before you start the application:

Your income-tax reference number (the business must be registered for income tax first).
ID of the owner / representative taxpayer, and proof you're authorised to act.
Proof of business address and a business bank account in the entity's name.
Proof you meet the threshold — invoices, signed contracts, financial statements or a sales schedule showing turnover.
Company registration documents (for a Pty Ltd) or your details as a sole proprietor.

How to register on eFiling — step by step

Log in to SARS eFiling (or register for an eFiling profile if you don't have one).
Go to SARS Registered Details and start a new VAT registration (VAT101).
Complete the business, contact, banking and turnover details, and choose your tax period and accounting basis.
Upload the supporting documents requested.
Submit. SARS may ask you to verify in person or supply more proof; once approved, your VAT number is issued and your registration date is set.

What changes the day you're registered

You must add 15% VAT to your taxable sales, issue valid tax invoices with your VAT number, file VAT201 returns each period (usually every two months), and keep every tax invoice for five years. The flip side: you can now reclaim input VAT on your purchases.

Set up your record-keeping before you register

VAT registration turns receipts from "nice to have" into "legally required". Every claim you make on a VAT return has to be backed by a valid tax invoice, and SARS verifies refunds. The businesses that find VAT painless are the ones whose receipts are already captured, split into VAT and ex-VAT, and filed — long before the return is due.

How SlipStack helps

Once you're a VAT vendor, send each supplier slip to SlipStack on WhatsApp. It pulls out the VAT, keeps a running claimable-VAT total, and files the original tax invoice to your own Google Drive — so every VAT201 is backed by documents you can produce in seconds. See how it works →

This guide is general information, not tax advice. VAT thresholds, forms and procedures change — confirm the current requirements with SARS or a registered tax practitioner before registering.

Frequently asked

When must I register for VAT in South Africa?

Compulsorily once your taxable supplies exceed R1 million in any consecutive 12-month period (or you're contracted to exceed it within 12 months). Voluntarily once you've passed R50,000.

How do I register for VAT with SARS?

Apply through SARS eFiling using the VAT101, with your income-tax number, ID, proof of address, banking details and proof you meet the threshold. SARS issues your VAT number once approved.

How long does VAT registration take?

It varies. Straightforward eFiling applications can be approved quickly, but SARS often requests verification or extra documents, which adds time. Apply well before you'd be charging VAT.

Do I have to charge VAT once registered?

Yes — you must add 15% to your taxable supplies, issue valid tax invoices showing your VAT number, file VAT201 returns and keep records for five years. In return you can claim input VAT on purchases.

Be VAT-ready before you register

SlipStack captures, splits and files every tax invoice — so VAT returns are backed by documents, not guesswork.

Try SlipStack free for 30 days

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