DoubleDown Books Secure checkout · PayFast
DoubleDown Books

Quote it. Invoice it.
Get paid.

South African bookkeeping that does the VAT properly, issues a tax invoice SARS will accept, and tells you who owes you what. From R80 a month.

Live in 30 minutes No setup fee POPIA operator agreement Cancel any time
Your account

Let's get
your books open.

Eight short screens, then your books are built and delivered in 30 minutes. Nothing here is a commitment — you can go back at any point, and nothing is charged until the last screen.

  1. 01
    Tell us about the business

    Your details, how the business is registered, and whether you are VAT registered. Eight short screens.

  2. 02
    Pick a plan

    Three plans, no setup fee. You pay the first month today and the next payment is one calendar month later.

  3. 03
    Pay by card

    Secure checkout through PayFast. Your card details never touch our servers.

  4. 04
    Your books are live in 30 minutes

    We build your account, seed your chart of accounts for your industry, and email you the app link — within 30 minutes on a business day.

Who are we opening the books for? *

Business identity

How the business
is registered.

This is what prints on every tax invoice you issue, so it has to match your registration exactly. SARS requires the supplier's name and address on a tax invoice — that is why the address is not optional.

How is the business registered? *

Where is the business? *

This address prints on your tax invoices. A tax invoice without the supplier's address is not a valid tax invoice.

Leave that unticked unless you actually post to a different place — you can add a separate postal address in the app.

VAT

Are you registered
for VAT?

This decides what your invoices are legally allowed to say. Get it right and DoubleDown Books enforces it for you on every document from then on.

Your VAT status *

Worth knowing
  • You must register for VAT once your taxable turnover passes R1 000 000 in any twelve consecutive months.
  • You may register voluntarily once it passes R50 000 in the past twelve months.
  • If you are not registered you must not charge VAT, and your invoices must not say "TAX INVOICE" or show a VAT number. DoubleDown Books enforces that for you.
  • The standard rate is 15%. We work VAT out to the cent by subtraction, so the excluding amount plus the VAT always equals the total shown — no rounding drift.

This is a statement of the rules, not advice about your business. If you are near the threshold, ask your accountant.

Your work

What you sell,
and how much of it.

Two things happen with these answers: your chart of accounts is seeded for your line of work, and we work out which plan actually fits instead of guessing.

What line of work are you in? *

Do you sell goods, services, or both? *

Roughly how many quotes and invoices do you issue in a month? *

An estimate is fine. Only issued documents count — drafts are free — and you can move plan at any time.

What do you need it to do?

Pick everything you want. Anything above the plan your volume needs will lift the recommendation — you will see exactly why on the next screen.

Your default terms

Your plan

One price.
No setup fee.

You pay your first month today and nothing else. The next payment is one calendar month from today. Month-to-month — cancel from inside the app whenever you like.

Run out of documents in a month? Buy a top-up pack from inside the app — 100 more for R49, 500 more for R199, 2 000 more for R599 — or move up a plan, effective immediately. Nothing you have already issued ever stops being readable.

Your documents

Make them
look like you.

Two things worth doing now: your logo, and the number your invoices carry on from. Everything else on this screen has a sensible default and lives in Settings inside the app.

Your logo

Colours, style, font and standard terms Optional — all of it is in Settings inside the app, and changing it there takes a minute

Your colour

Used for headings and rules on your documents #4FD8A6

Document style

Classic — Ruled table, serif headings. What most accountants expect.
Modern — Open, generous spacing, your brand colour as a rule.
Minimal — No lines, no fuss. Just the numbers.
Document font

Document numbering

Moving over from Sage, Xero, QuickBooks or a spreadsheet? Type the number you want to carry on from — if your last invoice was INV-0247, type 248. Leave both at 1 if this is your first invoice. You can still change this in the app right up until you issue your first document; after that it is fixed, because two invoices with the same number is a SARS problem. On: your numbers read INV-2026-0001. Off: one unbroken run, INV-0001 onwards.

Your first invoice will be INV-2026-0001. Numbers are gapless from there — SARS treats a gap as a red flag, so we never skip one.

Where customers pay you

Optional, and it is the account customers pay into — printed at the foot of your invoices. We never ask for internet-banking logins or card numbers, and you must never give them to anyone claiming to be us.

Standard terms printed on your documents Optional — there is a sensible default, and Settings can change it later
TAX INVOICEINV-0001
Billed toA customer of yours
Callout and first hourR 650,00
Replacement mixerR 1 240,00
Subtotal excluding VATR 1 643,48
VAT at 15%R 246,52
TotalR 1 890,00

A sketch, not the real thing — but the colour, the font and the layout are the ones your customers will get.

Service agreement

The whole
agreement.

Read it before you accept. It is month-to-month, there is no setup fee and there is no minimum term — clause 2 says exactly that, in those words.

SERVICE AGREEMENT
This Service Agreement ("Agreement") is entered into between DoubleDown AI (Pty) Ltd, registration number 2026/041829/07 ("Provider"), and {{biz}} ("Client"), represented by {{name}} ({{email}} · {{phone}}).

1. WHAT THE SERVICE IS

The Provider gives the Client access to DoubleDown Books — {{plan}} plan: a hosted bookkeeping, quoting and invoicing service for South African businesses, delivered as a secure installable web app (Progressive Web App).

The service includes quotes, tax invoices, credit notes, customers, an item catalogue, payment records, statements with ageing, VAT handling at the standard rate, PDF documents in the Client’s own branding, and the reporting and analytics included in the Client’s plan. The exact feature set for each plan is the one shown on the plan screen of this signup and on the product page, and forms part of this Agreement.

The Provider is a software provider. The Provider is not the Client’s accountant, auditor, bookkeeper or tax practitioner, and nothing produced by the service is professional advice. See clause 9.

2. FEES AND PAYMENT

There is no setup fee. The amount the Client pays at checkout is the first month’s subscription, in full and in advance.

Monthly subscription: {{monthly}}. The first month is the payment made today. The next payment is taken one calendar month after the payment date, and monthly on that date thereafter. No client can be suspended for non-payment during their first month.

How the monthly is collected: at checkout PayFast stores a secure token against the card used. The Provider charges that token each month. The Provider never sees, stores or transmits the Client’s card number, expiry date or CVV. The Client can change the card or cancel at any time from inside the app.

Term: month-to-month. There is no contract period and no minimum term. The Client may cancel at any time and will keep access until the end of the month already paid for.

VAT on our fees: the Provider’s prices are not subject to VAT. No VAT is charged or invoiced on the subscription.

Failed payments: if a monthly payment fails, the Client is notified by email and the Provider retries. If payment has not succeeded after the grace period shown in the app, document creation is paused. The Client’s existing records stay readable and exportable throughout — the Provider does not hold a business’s books hostage over a failed card. Service resumes immediately once payment succeeds. There is no reactivation fee.

3. DELIVERY

The account is built, seeded and delivered within 30 minutes during business hours — Monday to Friday, 08:00 to 16:30 South African time, excluding South African public holidays — from the moment payment is confirmed.

A signup completed outside those hours is delivered at 08:30 on the next business day. The same turnaround applies to every plan and there is no charge for faster delivery.

Delivery consists of an email to the address given at signup containing the app link and sign-in instructions. Sign-in is by a one-time six-digit code emailed to that address; the Provider does not issue or email passwords.

4. DOCUMENT ALLOWANCE

Each plan includes a monthly allowance of issued documents — quotes and invoices — as shown on the plan screen: {{cap}} per month on the {{plan}} plan. The allowance resets on the Client’s monthly billing date.

A draft costs nothing. Only a document that is issued counts. Credit notes do not count against the allowance, because the Client must always be able to correct an invoice.

If the allowance runs out the Client may buy a top-up pack from inside the app or move up a plan, effective immediately. Existing documents remain fully readable, printable and exportable when the allowance is exhausted.

5. HISTORY AND THE CLIENT’S DATA

The books belong to the Client. The Provider processes them; it does not own them.

How much history the app shows depends on the plan: the Minimum plan shows the most recent 6 months of documents; the Intermediate and Pro plans show everything. This is a display limit, not a deletion policy. Nothing is deleted when a plan limits the view, and moving up a plan makes the older records visible again immediately.

Export is unlimited on every plan, including Minimum. The Client can export their complete data — every business record, customer, item, quote, invoice, line, payment, supplier, expense, bank transaction, ledger account and journal — at any time, ignoring the display limit, in a machine-readable format. This is deliberate: SARS requires the Client to keep five years of records, and a plan tier must never stand between a business and its own tax records.

On cancellation the Client keeps export access for 30 days after the last paid day. After that the Provider may remove the data from active systems.

6. RECORD RETENTION — THE CLIENT’S LEGAL DUTY

South African law requires the Client, not the Provider, to retain business records:
  • Five years from the end of the tax period, under the Tax Administration Act, No. 28 of 2011, and for VAT records under the Value-Added Tax Act, No. 89 of 1991.
  • Seven years for company records, under the Companies Act, No. 71 of 2008.
The Provider retains the Client’s data for as long as the subscription is active and provides unlimited export so that the Client can meet those duties. The Provider does not accept, and cannot accept, responsibility for the Client’s statutory record-keeping. The Client is strongly advised to take a full export at least once a year and store it independently.

7. SARS COMPLIANCE OF DOCUMENTS

The service produces documents in the form required by the Value-Added Tax Act: it applies the correct document type by value (a full tax invoice above R5 000 including VAT, an abridged tax invoice between R50 and R5 000), it prints the words "TAX INVOICE" and a VAT number only where the Client has told us they are VAT registered, and it carries the mandatory fields.

This depends entirely on the information the Client gives us being correct — the registered name, address, VAT number and VAT status. The Provider does not verify these against SARS or CIPC and cannot do so. If the Client’s VAT status or registered details change, the Client must update them in the app. Documents issued on the strength of incorrect information supplied by the Client are the Client’s responsibility.

8. ISSUED DOCUMENTS CANNOT BE EDITED

Once a quote or invoice is issued it is locked. It cannot be edited and it cannot be deleted, by the Client or by the Provider. Document numbers are gapless and sequential.

This is not a limitation, it is the point: an accounting record that can be quietly changed after the fact is not an accounting record, and SARS and any auditor will treat a gap in an invoice sequence as a red flag. Mistakes are corrected the correct way — with a credit note, which the service issues in one click and which leaves both documents visible.

The Client accepts that they cannot ask the Provider to alter, renumber or delete an issued document.

9. NOT TAX, ACCOUNTING OR LEGAL ADVICE

DoubleDown Books is software. It is not a tax practitioner, an accountant, an auditor or a legal adviser, and it does not give advice.

Calculations, VAT positions, VAT201 preparation figures, compliance calendar dates, reports and financial statements produced by the service are generated mechanically from the data the Client enters and the settings the Client chooses. They are a starting point for the Client and the Client’s professional adviser, not a substitute for one.

The Client remains solely responsible for the accuracy and completeness of every return, declaration and submission made to SARS, CIPC or any other authority, and for any penalty, interest, assessment or dispute arising from one. The Provider strongly recommends that the Client engages a registered tax practitioner or accountant.

The Client accepts that a figure being produced by the service does not make it correct for the Client’s circumstances.

10. DATA PROTECTION AND POPIA

Both parties will handle personal information in compliance with the Protection of Personal Information Act, No. 4 of 2013 (POPIA).

The Client is the Responsible Party for the personal information of the Client’s own customers, suppliers, employees and contacts. The Provider is an Operator processing that information on the Client’s behalf and on the Client’s instruction. This Agreement is the written Operator agreement required by section 21 of POPIA.

The Provider will: (a) process personal information only to provide the service and only on the Client’s instruction; (b) apply appropriate, reasonable technical and organisational security measures, including per-tenant database isolation enforced at the database itself; (c) not sell, rent or share the Client’s data, and not use it to train any model; (d) notify the Client without undue delay, and in any event within 24 hours, of a confirmed compromise; (e) return or delete the data on termination, subject to clause 5.

Where the data is: the service is hosted in the European Union, which the Information Regulator recognises as providing an adequate level of protection under section 72 of POPIA. Backups and processing stay within that region.

The Client warrants that it has a lawful basis for every piece of personal information it puts into the service.

11. SECURITY

Access to the app requires authentication on every login. Each business’s records are isolated from every other business’s records by row-level security enforced inside the database, not merely by the application — so a fault in the app cannot expose another business’s books.

The Provider never asks for and must never be given: the Client’s SARS eFiling username or password, internet-banking login credentials, or card numbers. Bank statement data is imported by file (CSV or OFX) that the Client downloads from their own bank. Anyone asking the Client for those credentials in the Provider’s name is not the Provider.

Sign-in is by a one-time code emailed to the address on the account, so access to that mailbox is access to the books. The Client is responsible for keeping that mailbox secure, and for the actions of every user they invite.

12. WHAT THE PROVIDER IS NOT LIABLE FOR

The Provider’s total aggregate liability under or in connection with this Agreement is limited to the fees paid by the Client in the three months immediately preceding the claim. The Provider is not liable for indirect, consequential or incidental loss, including lost profit, lost business or lost opportunity.

Without limiting clause 9, the Provider is not liable for:
  • any penalty, interest, additional assessment, audit or dispute with SARS, CIPC or any other authority, however it arises;
  • data the Client or the Client’s users entered incorrectly, or a setting the Client chose incorrectly, including a wrong VAT status, a wrong VAT rate or a wrong opening balance;
  • a document sent to the wrong recipient by the Client;
  • the conduct of the Client’s own customers, suppliers or invited users;
  • outages of third parties the service depends on, including PayFast, the Client’s bank, email delivery, or the Client’s own internet connection;
  • loss arising from the Client failing to keep their sign-in email account secure, or from sharing access;
  • any failure caused by events outside the Provider’s reasonable control, including power or network outages, natural disaster, government action or third-party API failure.
The service is provided as is. The Provider targets 99.5% monthly uptime but does not warrant that the service will be uninterrupted or error-free. Nothing in this clause excludes the Client’s rights under the Consumer Protection Act, No. 68 of 2008 for genuine non-delivery or a defective service.

13. INTELLECTUAL PROPERTY

The software, its configuration, workflows and code remain the intellectual property of DoubleDown AI (Pty) Ltd. The Client receives a non-exclusive, non-transferable licence to use the service for the duration of an active subscription.

Everything the Client puts into the service — their data, documents, logo, branding and content — remains the Client’s property, in full, at all times.

14. SUPPORT

Support is provided by email to info@doubledownai.co.za and on WhatsApp at +27 76 847 0371, at the response times shown for the Client’s plan. Scheduled maintenance, where required, is announced 48 hours in advance and carried out outside business hours.

15. CANCELLATION AND TERMINATION

By the Client: at any time, from inside the app or by email to info@doubledownai.co.za. Cancellation takes effect at the end of the month already paid for. There is no notice period and no cancellation fee. Months already paid are not refunded, and no part-month is refunded.

By the Provider: the Provider may suspend or terminate the service on notice for non-payment beyond the grace period, or immediately for use of the service for an unlawful purpose, or for conduct that threatens the security or stability of the service for other clients.

On termination, in either direction, clause 5 applies: the Client has 30 days of continued export access.

16. GENERAL

Changes: the Provider may change these terms or the price on 30 days’ written notice to the Client’s signup email address. Because the Agreement is month-to-month, the Client’s remedy is simply to cancel before the change takes effect.

Disputes: the parties will attempt to resolve any dispute in good faith for 15 business days, then by mediation, before any legal proceedings are started.

Governing law: the laws of the Republic of South Africa. The parties consent to the jurisdiction of the courts of Gauteng.

Entire agreement: this document, together with the plan and price shown on the plan screen of this signup, is the entire agreement between the parties and supersedes anything said or written before it.

ELECTRONIC ACCEPTANCE

By typing their full legal name, ticking the acceptance box and continuing to payment, the Client confirms that they have read, understood and agree to this Agreement in full, and that they are authorised to bind {{biz}}.

This electronic acceptance is legally binding under South African law and carries the same weight as a handwritten signature in terms of the Electronic Communications and Transactions Act, No. 25 of 2002. The accepted version, the name typed, the date and time, and the plan and price agreed are recorded against this signup.

Three things to confirm separately *

These are the three that matter most for a bookkeeping product, so they are not buried in the box below.

Typing your name here is a signature under the Electronic Communications and Transactions Act, No. 25 of 2002.

How you will sign in

There is no password to invent and nothing else to remember. You open your books, type the email address you gave on the first screen, and we email you a six-digit code that is valid for an hour. That is the whole login.

We deliberately do not email you a password — a password sitting in an inbox is a password anyone with your inbox has. You can set one later from Settings if you would rather.

Payment

One month.
Then month to month.

There is no setup fee, so what you pay today is your first month and nothing else.

DoubleDown Books
Setup feeNone
First month, in advance
Payable today

Then a month, starting one calendar month from today, by debit order off the card you use now. Includes quotes and invoices a month.

  • There is no setup fee. What you pay today is your first month, in advance.
  • Your next payment is taken automatically one calendar month from today, then monthly on that date.
  • Month-to-month. No contract period, no minimum term. Cancel any time from inside the app.
  • Cancelling stops the next payment. Months already paid are not refunded, and no part-month is refunded.
  • Our prices are not subject to VAT — no VAT is charged or invoiced on your subscription.
  • Your books stay exportable in full on every plan, and for 30 days after you cancel.
PayFast

You are handed to PayFast to pay. Your card number, expiry and CVV never touch our servers — PayFast returns a secure token and that is all we ever hold.

Do not close this tab while it is working. If anything fails, everything you have typed is still here.

Questions before you pay? WhatsApp +27 76 847 0371.

Paid.
Your books are being built.

Your invoice is on its way to your email address. Your app link follows within 30 minutes on a business day — or at 08:30 the next business day if you signed up after hours. Sign in with that same email address and the six-digit code we send you.

Reference ·

  1. 01
    Payment confirmed

    PayFast confirms the payment to us directly. Your invoice is emailed to you immediately.

  2. 02
    We build your books

    Your business, your VAT settings, your numbering and a chart of accounts seeded for your industry.

  3. 03
    Delivery email

    Your app link, within 30 minutes on a business day — or 08:30 the next business day if you signed up after hours. Sign in with your email address and the six-digit code we send you.

  4. 04
    Issue your first invoice

    Add a customer, add a line, issue. The PDF is ready to send. It takes about a minute.

Nothing in your inbox after 30 minutes?

Check your spam folder first, then WhatsApp us on +27 76 847 0371 with the reference above. Your payment is recorded against it, so we can find you instantly.