Invoice Ninja

Invoice Ninja is a billing and work-management app for freelancers and small businesses that want invoicing, payments, time tracking, projects and expenses together. It suits operators who need more than a way to send bills, especially those who value self-hosting or cross-device apps.

The trade-off is clear: the forever-free plan stops at five clients, while useful growth features such as API access start with a paid plan. It is a strong fit for service businesses that can use its broader toolkit, but may be more than a simple invoicing workflow needs.

Overview

Invoice Ninja brings recurring invoices, automatic billing and quotes into the same system as client payment, billable time, project and expense management. That breadth can reduce the need to keep separate tools for billing and project administration; it also means buyers should consider whether they will actually use the additional functions.

Clients can pay through gateways including Stripe, PayPal, Square and GoCardless. The app also supports invoice tracking, overdue-balance reports, payment reminders and a customer payment portal, making it more than a document generator when following up on outstanding work matters.

Users can manage projects with Kanban boards, track billable hours and record expenses and vendors. Automation connections include Zapier, Make, Pabbly Connect and n8n. These capabilities suit freelancers and small teams with varied billing workflows, though the five-client free cap makes the no-cost hosted tier a limited long-term choice for a growing client book.

Key features

• Invoices and billing: Recurring invoices, automatic billing, quotes and 11 customizable templates cover common repeat and one-off work. The template range offers flexibility, but it does not by itself establish how deeply the design can be changed.
• Payments and collections: Gateway support includes Stripe, PayPal, Square and GoCardless. Invoice tracking, reminders, overdue-balance reporting and a client payment portal help centralize the collection process.
• Projects, time and expenses: Kanban project boards sit alongside billable-time tracking, expenses and vendor records. This combination is most valuable to service providers who need to connect work performed with what they bill.
• Integration and API: Zapier, Make, Pabbly Connect and n8n provide automation options. REST API access is reserved for Pro and Enterprise, so users needing custom integrations must move beyond Free.
• Hosting and security: The source-code-available product can be deployed on a user's own server, which Invoice Ninja describes as free to self-host. For its hosted platform, the company says it has completed a SOC 2 examination, uses TLS 1.2+ in transit and AES-256 at rest, and offers MFA. It says card details remain with the selected gateway and that it does not store full card numbers.

Pricing

The pricing model is freemium, with paid plans starting at $14 per user per month. The distinction between per-user and account-based pricing matters for teams: Enterprise scales with account users, while the entry paid price is stated per user.

• Free — free, billed Forever free: Five clients, unlimited invoicing and 11 templates. It is a credible starting point for a freelancer with a small client roster, but the client ceiling is restrictive for an established practice.
• Ninja Pro — $14 a month, billed monthly: Unlimited clients and invoices, API integration and automatic payment reminders. This is the practical step up for a solo operator outgrowing Free or needing API access; the listed price is per month, while the overall paid-from figure is per user per month.
• Enterprise — $18 a month, billed monthly: Pricing scales by account users, supports up to 100 users and includes 250 PEPPOL credits. Its higher user ceiling and included credits target larger operations, but the listed monthly amount should be read alongside the user-scaled pricing.
• Premium Business — from $280 a year: Custom pricing, with all Pro and Enterprise features, direct priority support and developer concierge. It is aimed at organizations that need a higher-support relationship rather than just the core billing suite.

Invoice Ninja describes self-hosting as free, an alternative for technically capable users willing to deploy the source code on their own server. No trial term is stated for Invoice Ninja's plans.

Platforms

Invoice Ninja offers browser, macOS, Windows, Linux, iOS and Android apps, with data synced across devices. That range is useful for businesses switching between desktop and mobile work. The product also supports self-hosting and provides an API on Pro and Enterprise.

Who it's for

Freelancers and small businesses that bill for ongoing or project-based work are the clearest fit, particularly those that want client payments, reminders, time and expenses tied to their invoicing workflow. Small teams can also benefit from project tools and the Enterprise option's capacity of up to 100 users.

It is less compelling for someone who only needs to send occasional invoices and has no use for time, project or expense management: the broader system may be unnecessary, and Free's five-client cap may force an upgrade sooner than a narrow invoicing tool would.

Pros and cons

• Pro: Billing, collections, projects, billable time and expenses share one product, which can suit service businesses that want these workflows together.
• Pro: Free includes unlimited invoices and 11 templates, making the five-client cap the main constraint rather than an invoice quota.
• Pro: Hosted and self-hosted options, plus desktop and mobile apps, offer flexibility over deployment and device use.
• Con: Free is limited to five clients, so it is not a durable free tier for many growing freelance practices.
• Con: API access begins on Pro, so Free users cannot rely on that integration path.
• Con: Enterprise pricing scales with account users, which makes team cost less straightforward than a single flat account price.

Alternatives

• FreeAgent is another freemium option with a free plan and monthly plans for sole traders and partnerships or LLPs; choose it if those business-specific plan categories better match your setup.
• Plutio is a paid product that also has a free plan and covers Android, iOS, macOS, web and Windows; consider it if you want to compare another cross-platform option.
• Fakturoid offers a free tier for up to five customers, unlimited invoices, one user and 1,500 API requests per month; it is worth considering if that quota-based API access fits better.
• Wave has a free Starter plan with unlimited estimates, invoices, bills and bookkeeping records, while online card payments carry a 2.9% + $0.60 transaction fee; choose it if those free accounting records matter more than Invoice Ninja's project and time tools.
• Zoho Invoice is free and its listed plan is free for Indian businesses, forever, with up to two users, three projects and 500 invoices per year; it may suit an eligible Indian business comfortable with those caps.
• Bookipi has a free plan capped at three invoices and three eSignatures per month, making it a comparison for users whose needs fit those smaller monthly allowances.
• Invoicely limits its free plan to five monthly invoices and three saved clients, with PayPal as the only payment option; Invoice Ninja's unlimited free invoices and broader gateway selection make it the stronger fit for those specific needs.
• Zervant offers a free plan capped at five customers and five invoices per month, with invoices sent by email or PDF; compare it if that limited free workflow is sufficient.

Invoice Ninja also belongs in comparisons across Freelance Invoicing Software, Accounts Receivable Software, Time and Expense Software, Time Billing Software and Invoicing software.

Verdict

Choose Invoice Ninja if you are a freelancer or small business that wants invoices, payments, time, project work and expenses in one system, or if self-hosting is important. Its breadth and deployment choice are the strongest reasons to pick it; the five-client free cap and paid gate on API access are the clearest reasons to look elsewhere or budget for Pro.