Online Invoicing for Modern Businesses
Create professional invoices online, send them via email, and keep invoice status organised. No software to install — invoice from any device, anywhere you work.
International Pro availability will be announced separately • No credit card required • Works on all devices
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, you keep professional invoices, client details and invoice status together in one browser-based workspace rather than across separate documents and email threads.
For growing businesses everywhere, online invoicing means less admin and a more professional client experience, with a clear record of the invoices you have created and sent.
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.
Invoice Status Tracking
Keep invoice status visible from one workspace while international payment features are finalised.
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
Encrypted connections and workspace access controls protect invoice and client data in normal use.
How Online Invoicing Works
From creation to payment in three simple steps.
Create Your Invoice
Add your client, line items, and payment terms. Tax is calculated automatically when enabled.
Send to Your Client
Email the invoice directly or share a link. Your client receives a professional invoice they can view online.
Track Your Invoice
Keep invoice status and client records organised in one workspace.
Traditional vs Online Invoicing
See why modern businesses are switching to online invoicing.
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?
Illumi uses HTTPS/TLS connections, authenticated access and private workspace controls. No online service can promise zero risk, so protect account credentials and keep independent copies of important records.
Can clients pay invoices online?
International payment features are being finalised separately. Illumi's Free plan is available for professional invoicing, client records and expense tracking.
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?
Online invoicing keeps invoices, client records and status in one browser-based workspace instead of scattering documents across Word, Excel and email. International payment and automation features will be announced separately.