Invoice Ninja
Free, open-source invoicing, payments, and expense tracking platform.
About Invoice Ninja
Invoice Ninja is open-source invoicing software that handles client billing, recurring invoice schedules, expense tracking, and time logging in one platform. You connect payment gateways directly — Stripe, PayPal, Braintree, or WePay — and collect payments without routing funds through Invoice Ninja itself. The self-hosted version is free with no client or invoice limits; the hosted Pro plan adds branded domains and advanced reporting for $10/month. Freelancers and small agencies get the most out of it, particularly those billing multiple clients under different brands. The white-label feature lets agencies present fully branded portals to each client without exposing Invoice Ninja's name. Time tracking feeds directly into invoice line items, which removes a manual step that trips up hourly billers using separate tools like Toggl. Where it falls short: self-hosting requires a server, a working PHP environment, and ongoing maintenance — this is not a plug-and-play setup. Accountants accustomed to FreshBooks or QuickBooks Online will find the UI less polished and bank reconciliation absent entirely. There is no native accounting ledger, so Invoice Ninja works alongside bookkeeping software rather than replacing it. Support on the free tier is community forums only, which is slow when something breaks.
Best for
Freelancers and agencies wanting free, customizable invoicing with payment processing
Key Features
- Recurring invoice automation
- Multi-gateway payment processing
- Time tracking with billable hours
- White-label customization
- Expense tracking and reporting
Pros & Cons
Pros
- Self-hosted version is genuinely free with no client, invoice, or user caps
- White-label portals let agencies brand the client-facing experience per client without extra per-seat fees
- Connects directly to Stripe, PayPal, Braintree, and WePay — payment funds go to your account, not through a middleman
- Time tracking module converts logged hours to invoice line items automatically, eliminating manual entry
- Recurring invoice engine supports custom intervals, auto-send, and automatic payment charging on saved cards
- Full data ownership on self-hosted installs — no vendor holds your client records
- Zapier integration extends automation to tools outside Invoice Ninja's native stack
Cons
- Self-hosting demands PHP server setup and ongoing maintenance — accountants without technical staff will hit a wall quickly
- No bank reconciliation or general ledger, so you still need separate bookkeeping software for month-end close
- Free tier support is forums only; paid support is limited even on Pro plans, and response times are inconsistent
- UI lags behind FreshBooks and QuickBooks Online in polish — client portal and mobile app feel underdeveloped
- Zapier is the primary integration bridge; native connections to Xero or QuickBooks for two-way sync do not exist
- Hosted plan pricing scales up for larger teams, erasing the cost advantage over entry-level SaaS competitors
Ledger Brief Take
The open-source foundation sets this apart from SaaS competitors like FreshBooks, giving tech-savvy practices full customization control and data ownership without vendor lock-in. While the feature set covers standard invoicing needs adequately, the real value lies in white-label capabilities for agencies managing multiple client brands. Best suited for firms comfortable with self-hosting or managing their own infrastructure rather than plug-and-play users.
Frequently Asked Questions
Common questions accountants ask about Invoice Ninja.
Is Invoice Ninja actually free, or is there a catch?
The self-hosted version is free with no client or invoice limits, but you pay for your own server hosting. The cloud-hosted free plan caps you at 20 clients. Pro hosted plans start at $10/month and remove that cap. There is no free trial period — the free tiers are permanent within their limits.
Does Invoice Ninja integrate with QuickBooks or Xero?
No native two-way sync exists with QuickBooks Online or Xero. You can push data through Zapier, but that requires building and maintaining your own zaps. If your workflow depends on real-time ledger sync, Invoice Ninja is not the right front-end billing tool for that stack.
How does Invoice Ninja compare to FreshBooks for freelancers?
FreshBooks charges $19-$55/month and includes cleaner UI, phone support, and a more developed mobile app. Invoice Ninja undercuts that cost significantly on the self-hosted free tier but requires technical setup and offers no phone support. FreshBooks wins on ease of use; Invoice Ninja wins on cost and customization control.
Who should self-host Invoice Ninja versus using the cloud version?
Self-host if you have a developer or IT-comfortable staff member who can manage a PHP server and run updates. Use the cloud version if you want zero infrastructure management. Agencies handling sensitive client data often prefer self-hosting specifically for data ownership and to meet client confidentiality requirements.
Is client payment data secure on Invoice Ninja?
Card data is handled by your connected gateway — Stripe, PayPal, or Braintree — not stored by Invoice Ninja itself. On self-hosted installs, security depends entirely on how you configure and maintain your own server. The hosted cloud version uses standard encryption, but Invoice Ninja has not published a SOC 2 certification.
Can Invoice Ninja handle multi-currency billing for international clients?
Yes. Invoice Ninja supports multi-currency invoicing and lets you set a default currency per client. Exchange rate updates are manual, not automatic, so you need to adjust rates yourself. Payment gateway currency support depends on which gateway you connect and that gateway's own country restrictions.