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Top 10 Best Project Billing Software of 2026

Discover the top 10 project billing software tools to streamline your workflow. Find the best fit for your needs today.

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How We Ranked These Tools

01
Feature Verification

Core product claims cross-referenced against official documentation, changelogs, and independent technical reviews.

02
Multimedia Review Aggregation

Analyzed video reviews and hundreds of written evaluations to capture real-world user experiences with each tool.

03
Synthetic User Modeling

AI persona simulations modeled how different user types would experience each tool across common use cases and workflows.

04
Human Editorial Review

Final rankings reviewed and approved by our editorial team with authority to override AI-generated scores based on domain expertise.

Independent Product Evaluation: rankings reflect verified quality and editorial standards. Read our full methodology →

How Our Scores Work

Scores are calculated across three dimensions: Features (depth and breadth of capabilities verified against official documentation across 12 evaluation criteria), Ease of Use (aggregated sentiment from written and video user reviews, weighted by recency), and Value (pricing relative to feature set and market alternatives). Each dimension is scored 1–10. The Overall score is a weighted composite: Features 40%, Ease of Use 30%, Value 30%.

Quick Overview

  1. 1#1: Harvest - Simple time tracking and invoicing software that enables teams to accurately bill clients for project-based work.
  2. 2#2: FreshBooks - Cloud-based accounting tool designed for small businesses with project time tracking and automated invoicing.
  3. 3#3: QuickBooks Online - Robust accounting platform featuring project profitability tracking, time expenses, and client billing.
  4. 4#4: BigTime - Professional services automation software with advanced time tracking, expense management, and project billing.
  5. 5#5: Accelo - All-in-one platform for service businesses handling projects, time tracking, retainers, and automated billing.
  6. 6#6: Kantata - Enterprise resource management software with sophisticated project financials, forecasting, and billing.
  7. 7#7: Toggl Track - Precise time tracking tool that integrates seamlessly with invoicing systems for project billing.
  8. 8#8: Paymo - Project management software combining task tracking, time logging, and invoicing for accurate billing.
  9. 9#9: Zoho Books - Affordable online accounting solution with project tracking, time tracking, and multi-currency invoicing.
  10. 10#10: Xero - Cloud accounting software offering project tracking, time billing, and profitability insights.

Tools were chosen based on a blend of core functionality (such as time tracking, invoicing, and profitability features), reliability, ease of use, and value, ensuring they meet the diverse demands of project-based workflows.

Comparison Table

Below is a comparison table of leading project billing software, including Harvest, FreshBooks, QuickBooks Online, BigTime, Accelo, and more, crafted to showcase key features, pros, and fit for varied workflows. Readers will discover insights to match their needs—from time tracking to invoicing integration—helping streamline the selection of the optimal solution.

1Harvest logo9.6/10

Simple time tracking and invoicing software that enables teams to accurately bill clients for project-based work.

Features
9.7/10
Ease
9.8/10
Value
9.3/10
2FreshBooks logo8.7/10

Cloud-based accounting tool designed for small businesses with project time tracking and automated invoicing.

Features
8.5/10
Ease
9.5/10
Value
8.0/10

Robust accounting platform featuring project profitability tracking, time expenses, and client billing.

Features
8.5/10
Ease
7.8/10
Value
8.0/10
4BigTime logo8.6/10

Professional services automation software with advanced time tracking, expense management, and project billing.

Features
9.1/10
Ease
8.2/10
Value
8.4/10
5Accelo logo8.2/10

All-in-one platform for service businesses handling projects, time tracking, retainers, and automated billing.

Features
8.5/10
Ease
7.7/10
Value
8.0/10
6Kantata logo8.4/10

Enterprise resource management software with sophisticated project financials, forecasting, and billing.

Features
9.1/10
Ease
7.6/10
Value
8.0/10

Precise time tracking tool that integrates seamlessly with invoicing systems for project billing.

Features
8.2/10
Ease
9.6/10
Value
8.5/10
8Paymo logo8.6/10

Project management software combining task tracking, time logging, and invoicing for accurate billing.

Features
8.8/10
Ease
8.5/10
Value
8.4/10
9Zoho Books logo8.1/10

Affordable online accounting solution with project tracking, time tracking, and multi-currency invoicing.

Features
7.8/10
Ease
8.5/10
Value
9.0/10
10Xero logo7.8/10

Cloud accounting software offering project tracking, time billing, and profitability insights.

Features
7.5/10
Ease
9.0/10
Value
8.2/10
1
Harvest logo

Harvest

specialized

Simple time tracking and invoicing software that enables teams to accurately bill clients for project-based work.

Overall Rating9.6/10
Features
9.7/10
Ease of Use
9.8/10
Value
9.3/10
Standout Feature

Direct invoicing from time-tracked data with automated rate application and expense inclusion

Harvest is a leading time tracking and invoicing platform tailored for project-based billing, enabling users to log hours, track expenses, and generate invoices seamlessly from time entries. It supports detailed project budgeting, profitability reporting, and team scheduling through its integrated Forecast tool. Ideal for agencies and consultancies, Harvest simplifies the transition from time tracking to client billing with intuitive dashboards and automation.

Pros

  • Seamless conversion of time entries into professional invoices
  • Excellent mobile app for on-the-go time tracking
  • Robust integrations with tools like QuickBooks, Asana, and Slack

Cons

  • Limited advanced project management features compared to full PM suites
  • Per-user pricing can become costly for large teams
  • Reporting customization could be more flexible for complex needs

Best For

Freelancers, creative agencies, and consulting firms focused on accurate time-based billing and profitability tracking.

Pricing

Pro plan at $12/user/month (billed annually) or $15 monthly; Enterprise custom pricing.

Official docs verifiedFeature audit 2026Independent reviewAI-verified
Visit Harvestgetharvest.com
2
FreshBooks logo

FreshBooks

specialized

Cloud-based accounting tool designed for small businesses with project time tracking and automated invoicing.

Overall Rating8.7/10
Features
8.5/10
Ease of Use
9.5/10
Value
8.0/10
Standout Feature

Project Profitability dashboard that automatically calculates margins from time, expenses, and invoices in real-time

FreshBooks is a user-friendly cloud-based accounting platform tailored for small businesses, freelancers, and agencies, specializing in invoicing, expense tracking, and time management. For project billing, it offers dedicated project tracking tools that allow users to log time and expenses per project, generate progress invoices, and manage retainers with automated recurring billing. It streamlines client payments through integrated gateways like Stripe and provides profitability insights to help optimize project margins.

Pros

  • Intuitive interface with drag-and-drop project setup
  • Seamless time tracking and expense allocation per project
  • Fast payment collection with automated reminders and retainers

Cons

  • Limited advanced reporting and customization for complex projects
  • Pricing scales quickly for teams with many clients
  • Lacks deep inventory or job costing for product-based billing

Best For

Freelancers, solopreneurs, and small service agencies seeking simple, automated project billing without steep learning curves.

Pricing

Lite ($19/mo, 5 clients), Plus ($33/mo, 50 clients), Premium ($60/mo, unlimited clients); 50% off first 3 months, annual billing discounts.

Official docs verifiedFeature audit 2026Independent reviewAI-verified
Visit FreshBooksfreshbooks.com
3
QuickBooks Online logo

QuickBooks Online

enterprise

Robust accounting platform featuring project profitability tracking, time expenses, and client billing.

Overall Rating8.2/10
Features
8.5/10
Ease of Use
7.8/10
Value
8.0/10
Standout Feature

Project Profitability dashboard for real-time income, costs, and margins per project

QuickBooks Online is a comprehensive cloud-based accounting platform with built-in project billing features that allow users to track time, expenses, and profitability across multiple projects. It supports creating invoices from billable hours and costs, generating project-specific profit and loss reports, and integrating with time-tracking apps for accurate billing. While not a dedicated project management tool, it excels in tying project data directly to accounting workflows for seamless financial oversight.

Pros

  • Robust project profitability tracking with P&L reports
  • Seamless invoicing from time and expenses
  • Strong integrations with time-tracking tools and payments

Cons

  • Project features require Plus plan or higher, increasing cost
  • Steeper learning curve for non-accountants setting up projects
  • Limited native project management beyond billing and tracking

Best For

Small to medium-sized businesses needing integrated accounting with project billing and profitability insights.

Pricing

Starts at $30/month (Simple Start, no projects); Projects feature in Plus ($90/month) or Advanced ($200/month); annual discounts available.

Official docs verifiedFeature audit 2026Independent reviewAI-verified
Visit QuickBooks Onlinequickbooks.intuit.com
4
BigTime logo

BigTime

specialized

Professional services automation software with advanced time tracking, expense management, and project billing.

Overall Rating8.6/10
Features
9.1/10
Ease of Use
8.2/10
Value
8.4/10
Standout Feature

Skill-based resource scheduling with real-time profitability forecasting

BigTime is a cloud-based professional services automation (PSA) platform tailored for project-based firms, excelling in time tracking, expense management, resource scheduling, and invoicing. It enables accurate project billing through billable hours capture, milestone tracking, retainers, and automated invoice generation integrated with accounting tools like QuickBooks. The software provides real-time profitability insights and customizable reporting to optimize revenue recognition and financial performance.

Pros

  • Robust billing options including fixed-fee, hourly, and milestone-based invoicing
  • Excellent integrations with major accounting software for seamless data sync
  • Advanced reporting and dashboards for project profitability analysis

Cons

  • Steeper learning curve for new users due to extensive features
  • Pricing can be high for very small teams
  • Limited native CRM functionality requiring third-party integrations

Best For

Mid-sized professional services firms like accounting, engineering, or consulting agencies needing comprehensive project billing and profitability tracking.

Pricing

Starts at $10/user/month (Essentials), $25/user/month (Pro), $45/user/month (Elite), billed annually with a minimum of 5 users.

Official docs verifiedFeature audit 2026Independent reviewAI-verified
Visit BigTimebigtime.net
5
Accelo logo

Accelo

specialized

All-in-one platform for service businesses handling projects, time tracking, retainers, and automated billing.

Overall Rating8.2/10
Features
8.5/10
Ease of Use
7.7/10
Value
8.0/10
Standout Feature

Automated retainer billing with usage tracking against allocated hours

Accelo is a comprehensive professional services automation (PSA) platform that integrates project management, time tracking, CRM, and billing into a single system. It enables teams to log time and expenses against projects, automate invoice generation based on billable hours or fixed fees, and handle retainers for recurring revenue. Designed for service-based businesses, it provides real-time profitability insights and streamlines the entire workflow from project initiation to payment collection.

Pros

  • Robust automation for time-to-invoice workflows
  • Real-time project profitability tracking
  • Flexible billing options including retainers and milestones

Cons

  • Steep learning curve due to extensive features
  • Higher pricing may not suit very small teams
  • Reporting customization could be more intuitive

Best For

Professional service firms and agencies needing an all-in-one PSA tool for project billing and operations management.

Pricing

Starts at $39/user/month (billed annually) for CRM-focused plans, $59 for Projects, $89 for full PSA; custom enterprise pricing available.

Official docs verifiedFeature audit 2026Independent reviewAI-verified
Visit Acceloaccelo.com
6
Kantata logo

Kantata

enterprise

Enterprise resource management software with sophisticated project financials, forecasting, and billing.

Overall Rating8.4/10
Features
9.1/10
Ease of Use
7.6/10
Value
8.0/10
Standout Feature

Revenue forecasting engine that ties billable utilization, project budgets, and actuals for accurate profitability predictions

Kantata is a robust professional services automation (PSA) platform that streamlines project billing through integrated time tracking, expense capture, and automated invoicing. It supports complex billing models like milestone, retainer, and fixed-price projects, while providing real-time profitability insights and revenue forecasting. Ideal for services firms, it connects project delivery with financial outcomes via seamless accounting integrations.

Pros

  • Advanced automated invoicing and revenue recognition
  • Precise time/expense tracking with project-level granularity
  • Strong integrations with QuickBooks, NetSuite, and Salesforce

Cons

  • Steep learning curve due to extensive features
  • Pricing is quote-based and can be costly for small teams
  • Interface feels cluttered for billing-only users

Best For

Mid-to-large professional services firms and agencies managing complex, multi-client projects with integrated billing needs.

Pricing

Custom quote-based pricing; starts around $39/user/month for Teams plan, scaling to Enterprise tiers with full PSA features.

Official docs verifiedFeature audit 2026Independent reviewAI-verified
Visit Kantatakantata.com
7
Toggl Track logo

Toggl Track

specialized

Precise time tracking tool that integrates seamlessly with invoicing systems for project billing.

Overall Rating8.4/10
Features
8.2/10
Ease of Use
9.6/10
Value
8.5/10
Standout Feature

Real-time profitability tracking that instantly calculates project margins from billable time and rates

Toggl Track is a leading time tracking solution that enables users to log hours against projects and clients, assign billable rates, and generate invoices based on tracked time. It offers detailed reports, profitability insights, and seamless integrations with tools like QuickBooks, Asana, and Jira to support project billing workflows. Ideal for time-based billing, it emphasizes accuracy and simplicity but relies on integrations for advanced accounting needs.

Pros

  • Intuitive one-click time tracking with idle detection for accuracy
  • Robust reporting and profitability dashboard for billing insights
  • Extensive integrations with PM and accounting tools

Cons

  • Basic invoicing without native payment processing or recurring bills
  • Lacks built-in expense tracking or advanced billing automation
  • Full billing features locked behind Premium plan ($18/user/mo)

Best For

Freelancers and small teams focused on hourly project billing who prioritize simple, precise time tracking.

Pricing

Free plan for basic tracking; Starter $9/user/mo (annual), Premium $18/user/mo with invoicing and profitability.

Official docs verifiedFeature audit 2026Independent reviewAI-verified
8
Paymo logo

Paymo

specialized

Project management software combining task tracking, time logging, and invoicing for accurate billing.

Overall Rating8.6/10
Features
8.8/10
Ease of Use
8.5/10
Value
8.4/10
Standout Feature

Automatic profitability tracking that calculates margins per project, client, or team member in real-time

Paymo is a comprehensive work management platform designed for agencies and teams, integrating time tracking, task management, resource scheduling, and invoicing into one tool. It excels in project billing by allowing users to track time against specific tasks and projects, automatically generate invoices from those entries, and monitor profitability in real-time. With client portals and customizable reports, it streamlines the entire workflow from project initiation to payment collection.

Pros

  • Seamless time tracking to invoicing workflow
  • Robust profitability and financial reporting
  • Intuitive interface with strong integrations (e.g., QuickBooks, Google Workspace)

Cons

  • Limited advanced customization for complex billing scenarios
  • Pricing scales up quickly for larger teams
  • Mobile app lacks some desktop features

Best For

Agencies and service-based teams that bill clients by time and projects while needing profitability insights.

Pricing

Free plan for solo users; paid plans start at $9.95/user/month (billed annually) for teams, with Business at $15.95 and Ultimate at $24.95 per user/month.

Official docs verifiedFeature audit 2026Independent reviewAI-verified
Visit Paymopaymoapp.com
9
Zoho Books logo

Zoho Books

specialized

Affordable online accounting solution with project tracking, time tracking, and multi-currency invoicing.

Overall Rating8.1/10
Features
7.8/10
Ease of Use
8.5/10
Value
9.0/10
Standout Feature

Automated retainer invoicing that draws from tracked project time and expenses

Zoho Books is a cloud-based accounting platform with built-in project billing capabilities, enabling users to track time, manage projects, and invoice based on hours, milestones, or retainers. It integrates time tracking and expense allocation directly to projects, supporting multi-currency billing and automated invoicing. Ideal for small businesses, it combines comprehensive accounting with straightforward project financials in a unified dashboard.

Pros

  • Affordable pricing with a free tier for basic use
  • Seamless time tracking and project expense allocation
  • Strong integrations with Zoho apps and third-party tools

Cons

  • Limited advanced project management (e.g., no Gantt charts or resource scheduling)
  • Some project billing features locked behind higher plans
  • Reporting lacks depth for complex, multi-phase projects

Best For

Small businesses and agencies handling simple to moderate project billing alongside general accounting.

Pricing

Starts free for 1 organization; paid plans from $20/user/month (Standard) to $70/user/month (Ultimate), billed annually with project features from Professional ($50/user/month).

Official docs verifiedFeature audit 2026Independent reviewAI-verified
Visit Zoho Bookszoho.com/books
10
Xero logo

Xero

enterprise

Cloud accounting software offering project tracking, time billing, and profitability insights.

Overall Rating7.8/10
Features
7.5/10
Ease of Use
9.0/10
Value
8.2/10
Standout Feature

Direct invoice generation from project time/expenses with automatic ledger postings

Xero is a cloud-based accounting software with built-in project billing capabilities via its Projects feature, allowing users to track time, expenses, and profitability on specific jobs or projects. It enables creating draft invoices directly from project data and integrates seamlessly with core accounting functions like bank feeds and payroll. Ideal for small businesses needing straightforward project tracking without complex project management tools.

Pros

  • Seamless integration of project billing with full accounting suite
  • Intuitive interface for quick time and expense entry
  • Real-time profitability reporting per project

Cons

  • Projects feature requires higher-tier plans
  • Basic time tracking lacks mobile timers and advanced scheduling
  • No native task management or Gantt charts

Best For

Small businesses and freelancers seeking simple project billing tightly integrated with everyday accounting.

Pricing

Early plan $15/mo (no Projects); Growing $42/mo; Established $78/mo (USD, 12-mo commitment; Projects in Growing+).

Official docs verifiedFeature audit 2026Independent reviewAI-verified
Visit Xeroxero.com

Conclusion

Evaluating the top project billing tools reveals three exceptional platforms, each excelling in distinct areas, with Harvest leading as the top choice. Harvest stands out for its simple yet effective time tracking and invoicing, making it a versatile option for teams. FreshBooks and QuickBooks Online, ranking second and third, offer their own strengths—FreshBooks for small businesses and cloud-based needs, QuickBooks for robust accounting and profitability insights—serving as strong alternatives depending on specific requirements.

Harvest logo
Our Top Pick
Harvest

Take the first step toward efficient project billing: explore Harvest today to experience its user-friendly features and streamline your client invoicing process.

Tools Reviewed

All tools were independently evaluated for this comparison

Referenced in the comparison table and product reviews above.