Retainer billing and recurring invoices

Invoice Software for Consultants in South Africa

Automate retainer billing, invoice for projects, and present a professional image to every client - with a payment link that actually works for South African businesses.

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Free plan available. Premium from R99/month. Built in Cape Town.

Built for the way consultants work

From monthly retainers to one-off projects - Rebill handles consulting billing end to end.

Recurring Retainer Billing

Set up monthly retainer invoices once and Rebill sends them automatically. Each invoice includes a payment link so clients can pay by card or EFT instantly. No more end-of-month invoice scrambles.

Project Invoicing

Invoice per project, per milestone, or per hour. Add detailed line items with descriptions so clients understand exactly what they are paying for. Quotes convert to invoices in one click.

Client Portal

Each client gets a private portal to view their invoices, download statements, and pay outstanding balances. Reduces back-and-forth emails and positions you as a professional operation.

Automatic Late Fees

Set a grace period and Rebill automatically adds a late fee to overdue invoices. Protect your cash flow without awkward conversations - the system handles enforcement for you.

Professional PDF Invoices

Send branded PDF invoices with your logo, business details, and SARS-compliant VAT breakdown. Your invoices look as polished as your consulting work.

WhatsApp Delivery

Send invoices directly to your client's WhatsApp - the channel South African business owners actually check. Clients see it immediately and can pay from the message.

Quick answer

What invoice software do South African consultants use?

South African consultants need invoicing software that handles both recurring retainer billing and one-off project invoices. Most international tools are built around general invoicing and do not have strong recurring billing features suited to consultants, or they lack the South African payment gateways clients expect. Consulting billing in South Africa often involves a mix of fixed monthly retainers, time-based billing for additional work, and project milestone invoices - all needing SARS-compliant tax invoices if the consultant is VAT registered. Rebill is used by IT consultants, management consultants, HR consultants, and marketing specialists across South Africa to automate retainer billing and invoice for project work. The recurring billing feature sends invoices automatically on a set schedule, while the client portal gives each client a self-service view of their account. WhatsApp delivery ensures invoices reach clients quickly, and the Paystack, Yoco, and PayFast payment integrations mean clients can pay immediately. At R99 per month, Rebill costs less than Sage or Xero while being better suited to the invoicing-focused needs of independent consultants.

Frequently asked questions

What is a retainer invoice?
A retainer invoice is a recurring invoice sent to a client on a regular schedule - typically monthly - for ongoing consulting services. The client pays a fixed retainer fee each period in exchange for your availability and work. Rebill automates retainer invoices so they are generated and sent automatically on your chosen schedule, with no manual work required.
How do I bill monthly retainers in Rebill?
In Rebill, you set up a recurring invoice for each retainer client. Choose the amount, the billing frequency (monthly, weekly, etc.), the start date, and whether invoices are sent automatically. Rebill then generates and sends each invoice on schedule. Clients can pay online via the payment link on the invoice.
Can I charge late fees for unpaid consulting invoices?
Yes. Rebill supports automatic late fees on overdue invoices. You can set a grace period, a late fee type (fixed amount or percentage), and a cap. Once enabled, Rebill automatically applies the late fee to invoices that remain unpaid after the grace period - no manual follow-up needed.
How does the client portal help consultants?
The client portal gives each of your consulting clients a private login where they can view all their invoices, download statements, and make payments. This reduces the time you spend answering payment queries and chasing clients for remittance confirmations - your clients handle it themselves through the portal.
Is Rebill suitable for an IT consultant in South Africa?
Yes. IT consultants in South Africa commonly use Rebill for monthly retainer billing, project-based invoicing, and hourly billing. You can invoice for time, deliverables, or a combination. If you are VAT registered, Rebill produces SARS-compliant tax invoices automatically. Clients can pay via Paystack, Yoco, or PayFast directly from the invoice.

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