Overview

InvoiceShelf brings invoices and estimates, payment tracking, recurring billing, expenses, and reporting into one open-source application. Its free plan has no invoice or customer cap, which makes it appealing for small businesses, agencies, and consultancies whose needs may outgrow basic billing tools. The trade-off is responsibility for deployment and upkeep: it requires a compatible server and database rather than a simple hosted signup.

Key features

Invoices, payments, and collections

Branded invoices and estimates, custom fields, tax rules, multi-currency support, and PDF templates give businesses useful control over billing documents. Users can record partial or full payments, track invoices, send payment reminders, and review overdue-balance reports. Stripe checkout supports online card payments. Customers can also use a private portal to view invoices, estimates, and payments without creating a separate account, reducing friction when they need to check a balance.

Recurring billing, expenses, and reporting

Recurring invoices cover retainers, subscriptions, and repeat customers, so the app can handle ongoing work as well as one-off jobs. Expense tracking and reports for sales, taxes, overdue balances, and profit give owners a broader view of business finances. These capabilities make InvoiceShelf more than a document generator, though its self-hosted model means users must manage the application environment themselves.

Extensibility and operations

A REST API using Sanctum tokens and a module system offer room to connect or extend workflows. The InvoiceShelf 3.0.0-alpha.5 MCP server can connect with Claude, ChatGPT, Claude Code, and Cursor, with read-only or read-and-write access, but remains disabled until a super admin enables it. That capability is tied to an alpha release, so it is not the foundation to choose the product around. Webhooks are marked as coming soon, limiting a route for event-driven integrations.

Remote storage drivers include Dropbox, Amazon S3, and DigitalOcean Spaces. The interface supports full, database-only, or files-only backups. The InvoiceShelf 2.4.6 release notes describe fixes for two security issues involving file disk selection and saved storage credentials; administrators should keep the installation maintained rather than treating self-hosting as a set-and-forget arrangement.

Pricing

The InvoiceShelf plan costs 0.00 USD per free and is free forever under AGPL-3.0. It is self-hosted, with unlimited invoices and customers, no seats, and no subscription. That combination suits a solo operator or small team that can provide its own hosting and wants to avoid per-seat or usage caps. The cost advantage comes with an infrastructure responsibility: hosting and maintaining the application are part of the deal.

Platforms

InvoiceShelf supports web, self-hosted, and API use. The download requirements are PHP 8.3 or 8.4, Nginx or Apache, and MySQL 8+, MariaDB 10.4+, PostgreSQL 13+, or SQLite 3.35+. Those requirements make it a practical choice for people able to run a compatible stack, but a poor fit for buyers who need an app they can use without managing a server. Community support is offered through Discord, with GitHub Discussions for installation help.

Who it's for

InvoiceShelf is best for individuals and small businesses, including agencies and consultancies, that want broad invoicing and finance features without a subscription and can self-host. It is less suitable for teams that need a hosted service, want webhooks now, or do not have someone able to maintain the required PHP and database environment.

Pros and cons

Pros: Unlimited invoices and customers at no subscription cost remove common growth caps for small operators.
Pros: Invoicing, recurring billing, expense tracking, reports, payment reminders, and a customer portal cover much of the day-to-day billing cycle in one application.
Pros: Partial-payment recording and overdue-balance reporting help businesses keep collections and outstanding amounts visible.
Cons: PHP, web-server, and database requirements make setup and maintenance a real commitment compared with hosted invoicing software.
Cons: Webhooks are not yet available, which can be a constraint for teams relying on event-driven integrations.
Cons: The MCP server is in an alpha release and must be enabled by a super admin, so AI connections are an emerging option rather than a dependable core workflow.

Alternatives

Invoice Ninja is worth considering if native apps across Android, iOS, Linux, macOS, and Windows matter more than unlimited customer capacity: its free plan includes unlimited invoicing but caps users at five clients, while Ninja Pro is 14.00 USD per month.

Zoho Invoice is a free alternative for eligible Indian businesses that prefer mobile or desktop platforms to self-hosting; its free plan is for Indian businesses and caps usage at two users, three projects, and 500 invoices per year.

BILL Accounts Payable may suit buyers looking for a paid Accounts Payable and Accounts Receivable subscription; its Essentials plan is 49.00 USD per month and a free trial is offered.

Invoiced is a paid API and web option with custom pricing based on requirements and use, quoted after a demo request.

Billtrust is a paid accounts receivable platform with pricing discussed through consultation.

Emagia Receivables Management is an enterprise receivables management option with pricing by inquiry.

HighRadius offers a paid SaaS subscription with multiple pricing strategies, including pay-as-you-go based on features used.

Versapay is a paid accounts receivable automation option with tailored pricing that varies by invoice volume, customer count, users, integrations, and capabilities.

For more options, browse Invoicing software or Accounts Receivable Software.

Verdict

Choose InvoiceShelf if you are a small business, agency, or consultant who wants uncapped invoicing and a broad billing toolkit without a subscription, and can handle self-hosting. Its strongest reason to buy is the combination of unlimited invoices and customers with recurring billing, payment tracking, expenses, and reports. Look elsewhere if you want hosted convenience or need webhooks as part of your integration workflow.

	Invoice2go	InvoiceShelf
Free plan	No	Yes
Free trial	Yes	No
Paid from	—	Free
Open source	No	No
Platforms	Android, iOS, Web	api, self-hosted, Web
Free plan	No	Yes
Recurring invoices	Yes	Yes
Online payments	Yes	—
Payment reminders	Yes	—
Client portal	Yes	—

Invoice2go vs InvoiceShelf

Invoice2go

InvoiceShelf