Simple Invoices
Simple Invoices: A flexible self-hosted invoicing system with recurring billing, payments, and broad exports. Ranked #35 of 83 in Invoicing Software by our editors (5.9/10); pricing: Free plan; best for self-hosters needing flexible payment and export options.
At a glance
- Editor score5.9 / 10
- PricingFree plan
- Best forSelf-hosters needing flexible payment and export options
- Free planYes
- Paid fromFree
- Client portalYes
- Founded2005
- Facts checked19 Sep 2026
Where it wins
- Recurring invoices support daily, weekly, monthly, and yearly schedules
- Online payments, multi-currency invoices, and customer portals are included
- Exports include PDF, XLSX, DOCX, and HTML print view
Where it doesn't
- Requires server installation through Docker or a PHP and database stack
- Self-hosting places deployment responsibility on the business
- Managed, ready-to-use hosting is not its primary model
Our verdict on Simple Invoices
Simple Invoices is a free, open-source, self-hosted web application for creating, sending, and managing invoices. It suits businesses that want to operate their own invoicing system and keep invoice data on their server. The application handles itemized and total invoices, customer and biller records, products, taxes, reports, payment tracking, and invoice-status management. It also supports customer self-service through a portal for invoices, payment history, and payments.
The published licensing details describe the software as GPLv3-licensed, with no license fees or per-user charges. Its feature set is broad for a free invoicing application: recurring invoices can run daily, weekly, monthly, or yearly; invoices can be generated as PDFs and emailed with attachments; and online payments can connect with Stripe, PayPal, Mollie, Coinbase, Authorize.net, Adyen, eWay, Ko-fi, and PaymentsGateway. Multiple currencies and per-invoice currency settings make it suitable for businesses billing across currencies. Multiple isolated invoice domains can also run from one installation.
The main trade-off is the self-hosted operating model. Installation requires a server using Docker or a traditional PHP and database stack, so it is a better fit for organizations prepared to manage their own deployment than for buyers seeking a hosted service with minimal administration. Its export options—PDF, XLSX, DOCX, and HTML print view—support flexible record handling, while browser access keeps the working interface web-based. Choose Simple Invoices when control, extensibility, payment options, and data ownership matter; choose a managed alternative when avoiding server setup is the priority.
Your product? Our editors can test Simple Invoices in depth and publish a review, labelled as paid · from $149/mo →
Simple Invoices pricing
Simple Invoices fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Recurring invoices | Yes |
| Online payments | Yes |
| Payment reminders | Not verified |
| Multi-currency invoicing | Yes |
| Included team users | Not verified |
| Client portal | Yes |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Integrations | 9 integrations: Stripe, PayPal, Mollie, Coinbase, Authorize.net, Adyen … |
| Pricing | Free plan |
| Website | simpleinvoices.org |
| Facts checked | 19 Sep 2026 |
Simple Invoices integrations
Simple Invoices lists 9 integrations on its own site.
- Stripe
- PayPal
- Mollie
- Coinbase
- Authorize.net
- Adyen
- eWay
- Ko-fi
- PaymentsGateway
Alternatives to Simple Invoices
- Zoho InvoiceA free invoicing tool with payments, reminders, portals, projects, and reporting.9.4
- PayPal InvoicingA free invoicing option for small businesses already using PayPal.9.3
- Stripe InvoicingA payment-focused invoicing system for global billing and recurring collections.9.2
See all Simple Invoices alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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