Top Invoice Tracking Systems for Freelancers

All‑in‑one invoicing, time‑tracking, and expense management tool with automated hourly and fixed‑price invoicing, client portals, and recurring invoices.

Tailored for freelancers, it combines mileage tracking, expense categorization, and customizable invoices for hourly or project‑based rates.

Free invoicing and accounting suite with unlimited invoices, time‑tracking add‑on, and support for both hourly and fixed‑price billing.

Feature‑rich invoicing platform offering time‑sheet integration, multi‑currency support, and automated reminders for hourly and flat‑rate projects.

Time‑tracking focused tool that turns tracked hours into professional invoices, with budget alerts and fixed‑price project templates.

Freelancer‑first suite with contract generation, time tracking, and invoicing that handles hourly rates, retainers, and milestone payments.

Project management, time tracking, and invoicing combined; supports hourly billing, fixed‑price quotes, and client‑facing portals.

Open‑source invoicing platform with unlimited clients, time‑tracking, and the ability to bill by hour, project, or retainer.

Free tier offers unlimited invoices, customizable hourly rates, and fixed‑price templates; premium adds auto‑reminders and recurring billing.

Cloud accounting software with robust invoicing, time‑sheet integration via add‑ons, and support for both hourly and fixed‑price projects.

Comprehensive accounting suite that includes invoicing, time‑tracking, and project billing for freelancers.

Simple invoicing tool integrated with Square payments; lets freelancers bill hourly or flat rates and accept card payments instantly.

Free invoicing service that supports hourly line items, fixed‑price items, and instant payment collection via PayPal.

Developer‑friendly billing platform for freelancers who need custom invoicing, subscription, and one‑time payment handling.

Accounting software with invoicing, time‑tracking integrations, and flexible pricing options for hourly and project work.

Simple cloud accounting with clean invoicing UI; supports hourly rates, fixed‑price jobs, and automatic tax calculations.

UK‑focused freelancer accounting tool offering time‑tracking, expense management, and invoices for hourly and fixed‑rate work.

Designed for gig‑economy workers; includes mileage tracking, invoicing with hourly and flat‑rate options, and tax summaries.

Mobile‑first invoicing app with customizable templates, hourly billing, and recurring invoice automation.

Simple invoicing and accounting solution that lets freelancers create hourly or fixed‑price invoices quickly.

Free accounting platform with invoicing, time tracking, and automated reminders; supports both hourly and project rates.

Professional invoicing SaaS with multi‑currency support, hourly billing, and fixed‑price project templates.

All‑in‑one freelancer suite offering contracts, time tracking, and invoicing for hourly, retainer, and milestone billing.

Accounts‑payable/receivable automation that integrates with popular accounting tools and supports custom invoice line items for hourly work.

Free accounting software with invoicing, automated tax calculations, and the ability to bill by hour or fixed price.

Open‑source invoicing system that can be self‑hosted; supports hourly rates, project fees, and multiple currencies.

Online invoicing with time‑tracking add‑on; lets freelancers create hourly and fixed‑price invoices with client portals.

Free tier for up to 5 clients; includes time‑sheet entry, hourly rates, and fixed‑price invoicing.

Popular time‑tracking app that pairs with Toggl Invoice to generate professional invoices from tracked hours or project fees.

Freelance‑focused invoicing platform with built‑in time tracking, hourly billing, and milestone payments.

All‑in‑one business management suite offering time tracking, proposals, and invoicing for hourly and fixed‑price contracts.

Lightweight invoicing tool that integrates with Harvest time‑tracking to create hourly or flat‑rate invoices.

Premium version with workflow automation, recurring invoices, and conditional pricing for complex hourly/fixed‑rate structures.