What Is Online Invoicing?
Online invoicing is the modern way to bill your clients. Instead of creating invoices in Word or Excel and emailing PDF attachments, you use a web-based platform to create, send, and track invoices — all from your browser.
With online invoicing, your clients receive a professional invoice via email with a link to view it online. They can pay instantly using their credit card, debit card, or EFT. You get notified when they view the invoice and when payment is received.
For South African businesses, online invoicing means faster payments, less admin, and a more professional image. No more chasing clients for payment or wondering if they received your invoice.
Why Choose Online Invoicing?
Save time, get paid faster, and look more professional with cloud-based invoicing.
Invoice From Anywhere
Create and send invoices from your laptop, tablet, or phone. No software to install — just log in and invoice.
Email Delivery
Send invoices directly to your clients via email. They receive a professional invoice with a link to pay online.
Online Payments
Clients pay instantly via credit card, debit card, EFT, or SnapScan using PayFast and Yoco integration.
Real-Time Notifications
Get notified when clients view your invoice and when payments are received. No more wondering if they saw it.
Works on All Devices
Fully responsive design means you can manage invoices on desktop, tablet, or mobile with the same great experience.
Secure & Private
Bank-grade encryption protects your data. Your invoices and client information are always secure.
How Online Invoicing Works
From creation to payment in three simple steps.
Create Your Invoice
Add your client, line items, and payment terms. VAT is calculated automatically if you're registered.
Send to Your Client
Email the invoice directly or share a link. Your client receives a professional invoice they can view online.
Get Paid Online
Clients click 'Pay Now' and pay via card or EFT. Payment is marked automatically — no manual updates needed.
Traditional vs Online Invoicing
See why South African businesses are switching to online invoicing.
What SA Businesses Say
"I used to spend hours creating invoices in Excel and chasing payments. Now I send an invoice in 2 minutes and clients pay online the same day."
"The ability to invoice from my phone while on-site with clients has been a game-changer. I get paid before I even leave."
Everything You Need for Online Invoicing
Illumi gives you all the tools to invoice professionally and get paid on time.
Frequently Asked Questions
Common questions about online invoicing
What is online invoicing?
Online invoicing is the process of creating, sending, and managing invoices through a web-based platform instead of using desktop software or paper. With online invoicing, you can access your invoices from any device, send them via email, accept online payments, and track payment status in real-time.
Is online invoicing secure?
Yes. Illumi uses bank-grade encryption (SSL/TLS) to protect all data in transit and at rest. Your invoices, client information, and payment details are stored securely on protected servers with regular backups.
Can clients pay invoices online?
Absolutely. When you send an invoice through Illumi, clients receive a 'Pay Now' button that allows them to pay instantly via credit card, debit card, EFT, or SnapScan using our PayFast and Yoco integrations.
Do I need to install any software?
No. Illumi is completely web-based. You just need a web browser and internet connection. It works on Windows, Mac, Linux, iOS, and Android devices.
Can I access my invoices offline?
You need an internet connection to create and send invoices. However, you can download PDF copies of your invoices for offline access or printing.
How is online invoicing different from traditional invoicing?
Traditional invoicing involves creating invoices in Word or Excel, emailing PDFs, and manually tracking payments. Online invoicing automates this entire process — invoices are sent with payment links, payments are tracked automatically, and reminders are sent for overdue invoices.