10 Best Billing Software for Professional Services in 2026

Birdview PSA is a professional services automation platform that brings together project management, resource planning, time tracking, client billing, and reporting in one centralized system, helping teams manage projects more efficiently from start to finish.

Who Is Birdview PSA Best For?

Birdview PSA is a strong fit for mid-sized agencies and professional services firms managing multiple concurrent client projects.

Why I Picked Birdview PSA

Birdview PSA earns its spot on my shortlist because of how well it handles visibility across active client engagements. I particularly like the portfolio-level dashboards, which surface budget status, resource utilization, and project health across every account at once. My team can track billable hours against project budgets in real time, so nothing slips through the cracks before invoicing.

Birdview PSA Key Features

• Invoice generation: Create and send client invoices directly from logged project time and approved expenses.
• Expense tracking: Log and categorize project expenses to keep client billing accurate and audit-ready.
• Client portal: Share project updates, files, and billing details with clients through a dedicated access point.
• Capacity planning: View team availability across upcoming projects to allocate billable resources before gaps occur.

Birdview PSA Integrations

Birdview PSA offers native integrations across the Microsoft ecosystem, including Microsoft 365, Microsoft Teams, SharePoint, OneDrive, MS Outlook, and MS Project, along with Jira, ServiceNow, QuickBooks, Adobe Creative Cloud, and Tim

Productive is a project management and billing platform built specifically for agencies, consultancies, and other professional services firms that need to connect project delivery with financial oversight in a single workspace.

Who Is Productive Best For?

Productive is purpose-built for digital and creative agencies that bill clients by the hour, retainer, or fixed fee and need tight control over project margins.

Why I Picked Productive

I've included Productive in my top picks because its margin tracking goes deeper than most billing tools in this space. I like that it factors in overhead costs and salary expenses alongside billable hours, so the margin figure I see per project reflects actual profitability, not just revenue. The profitability report breaks down budget spent, cost, and margin in real time, which means I can catch a slipping project before it closes in the red.

Productive Key Features

• Automated retainer invoicing: Productive auto-generates invoices for recurring budgets, so you can finalize and send them without rebuilding them each billing cycle.
• Multi-phase budget splitting: Break large, long-term projects into separate budget phases, each tracked independently for spend and remaining amounts.
• Budget overrun alerts: Set custom thresholds so Productive notifies you before a project burns through its estimate, not after.
• Multi-currency invoicing: Create invoices and track expenses in different currencies, with support for multiple subsidiaries within a single account.

Productive Integrations

Productive offers native integrations with Jira, HubSpot, Xero, QuickBooks, Sage, Slack, Gmail, Microsoft Outlook, Google Calendar, and BambooHR, along with accounting-specific connectors for Fortnox, Visma e-conomic, Exact, and Twinfield. It also connects with Zapier and provides an open API for custom integrations.

Scoro is a professional services automation (PSA) platform that covers the full project lifecycle, from quoting and resource planning to time tracking, invoicing, and financial reporting, all within a single system.

Who Is Scoro Best For?

Scoro is a strong fit for growing professional services firms that want one platform to manage projects, people, and finances without stitching together separate tools.

Why I Picked Scoro

Scoro earns its spot as one of the best on my shortlist because it genuinely covers the full billing workflow without needing companion tools. I like that quotes convert directly into projects, and approved time entries flow straight into invoices, keeping the billing cycle tight. The retainer management module tracks used vs. remaining hours per period, which I find especially useful for teams billing on recurring contracts.

Scoro Key Features

• Multi-currency invoicing: Generate invoices in different currencies with automatic exchange rate handling for international client billing.
• Billable vs. non-billable time tracking: Log hours against projects and flag each entry as billable or non-billable to keep revenue recognition accurate.
• Project budget tracking: Set cost and revenue budgets per project and monitor actuals against them in real time.
• Customizable financial dashboards: Build real-time views of revenue, utilization, and project profitability across your portfolio.

Scoro Integrations

Scoro offers native integrations with Xero, QuickBooks, Sage Intacct, Exact Online, Salesforce, HubSpot, Jira, Slack, Google Calendar, and Dropbox, among others. It also connects with Zapier and provides an API for custom integrations.

BigTime is a professional services automation (PSA) platform that covers time and expense tracking, project billing, resource management, invoicing, and quoting in a single system built around your general ledger.

Who Is BigTime Best For?

BigTime is a strong fit for mid-sized professional services firms—think consultancies, engineering, and IT firms—that bill clients by project or hourly engagement.

Why I Picked BigTime

BigTime is one of my top picks because I love how it connects time tracking directly to project billing. Its auto-generated timesheets pull logged hours straight into invoices, so your team spends less time on admin and more time on billable work. I also like the project financial health dashboard, which surfaces budget burn, resource usage, and underbilled time in one view, so you catch revenue leakage before it hits your margins.

BigTime Key Features

• Customizable invoice templates: Build invoices with your own branding, line-item structures, and billing rate configurations for each client.
• Expense tracking: Log, categorize, and attach receipts to project expenses that feed directly into client billing.
• Approval workflows: Route timesheets and invoices through multi-step approval chains before they reach the client.
• Revenue recognition: Recognize revenue by project milestone, completion percentage, or billing schedule.

BigTime Integrations

BigTime offers native integrations with QuickBooks, Sage Intacct, Xero, NetSuite, Salesforce, HubSpot, Jira, Google Calendar, Lacerte, and BambooHR, along with enterprise connectors for Smartsheet, Microsoft Project, Microsoft Dynamics GP, and Zendesk. It also connects with Zapier and provides a REST-based API for custom integrations.

Built for services firms, Accelo is a professional services automation (PSA) platform that helps teams manage the complete client lifecycle, from winning new business and delivering projects to tracking time, billing clients, and maintaining long-term customer relationships.

Who Is Accelo Best For?

Accelo works well for operations leads and finance teams at services firms who manage high volumes of client contracts and need billing to run with minimal manual intervention.

Why I Picked Accelo

Accelo earns its spot on my shortlist because automated client billing is genuinely built into how the platform works, not bolted on. I like that invoices can be triggered automatically based on project milestones, contract terms, or time thresholds, without anyone manually prompting the process. The retainer tracking also impresses me: it logs hours against each retainer in real time, so billing reflects exactly what was delivered before an invoice goes out.

Accelo Key Features

• AI budget monitoring: Accelo uses AI to flag budget overruns and scope creep in real time across active projects.
• Expense capture: Log billable expenses directly against a project or client record so they feed into the next invoice automatically.
• Client portal: Clients can review, approve, and pay invoices through a dedicated portal without email back-and-forth.
• Multi-currency billing: Issue invoices in multiple currencies to support billing across international clients from a single account.

Accelo Integrations

Accelo offers native integrations with Xero, QuickBooks Online, HubSpot, Salesforce, Microsoft 365, Google Workspace, Mailchimp, Slack, Dropbox, and Stripe. It also provides an API for custom integrations.

TimeSolv is a legal time tracking and billing platform that covers time entry, invoicing, trust accounting, online payments, project management, and CRM, built for law firms and professional services firms billing across multiple clients and matters.

Who Is TimeSolv Best For?

TimeSolv is a strong fit for mid-sized law firms and professional services practices billing clients across multiple currencies or international jurisdictions.

Why I Picked TimeSolv

I've included TimeSolv in my top picks because it handles international billing in a way most legal billing tools simply don't. You can select the billing currency at the invoice level, so firms working with clients across different countries can issue invoices in local currencies with accurate exchange rate conversions. I also like that TimeSolv supports built-in LEDES billing, which is standard for firms billing corporate clients globally, and multiple billing rate structures per matter.

TimeSolv Key Features

• Trust accounting: Track client funds held in trust separately from operating accounts, with built-in reconciliation tools.
• Matter budgets: Set spending limits per matter and monitor time and expense totals against those limits in real time.
• Batch billing: Generate and send multiple invoices in a single action across selected clients or matters.
• Mobile time entry: Log billable time from any device, including offline, with automatic syncing when reconnected.

TimeSolv Integrations

TimeSolv offers native integrations with QuickBooks, Xero, Microsoft 365 (including Outlook and OneDrive), Dropbox, NetDocuments, LawPay, AccountEdge, and LexShare/LexSign. Zapier is not currently supported, but an API is available for custom integrations.

Deltek Vantagepoint is a project-based ERP built specifically for professional services firms, combining project accounting, resource planning, time and expense tracking, billing, and financial reporting in a single platform.

Who Is Deltek Vantagepoint Best For?

Deltek Vantagepoint is a strong fit for architecture, engineering, and consulting firms that need project-based accounting with government contract compliance built in.

Why I Picked Deltek Vantagepoint

I picked Deltek Vantagepoint because no other tool on this list gives you project profitability analytics that are this deeply tied to the financial engine behind them. I especially like the built-in Dela AI, which monitors project health in real time and surfaces alerts when budgets, margins, or utilization metrics start moving in the wrong direction. Vantagepoint's project-specific KPIs let you track financial performance at the phase and task level, not just the project level, so you can pinpoint exactly where cost overruns are happening before they compound.

Deltek Vantagepoint Key Features

• Automated billing and invoicing: Automates the billing cycle, including invoice generation, so your team spends less time on manual billing tasks.
• Multi-company financial management: Manages financials across multiple entities, currencies, and cost structures from a single accounting environment.
• CRM and pipeline management: Tracks client relationships, pursuits, and proposal activity alongside project financials in one system.
• Vantagepoint Payments: Automates accounts receivable and accounts payable processes directly within the platform to accelerate cash collection.

Deltek Vantagepoint Integrations

Deltek Vantagepoint offers native integrations with Microsoft Outlook, UKG, Deltek PIM, Deltek ArchiSnapper, Deltek GovWin IQ, and QuickBooks Online, along with marketplace partners like EleVia Software, Vena Solutions, and ClientPay. It also provides a RESTful API for custom integrations and supports pre-built connectors for iPaaS platforms.

ConnectWise PSA is a professional services automation platform built for managed service providers (MSPs) that covers service management, time tracking, project delivery, billing automation, and sales pipeline management in one connected system.

Who Is ConnectWise PSA Best For?

ConnectWise PSA is purpose-built for managed service providers (MSPs) and IT service firms that need to manage recurring contracts, service tickets, and client billing in one system.

Why I Picked ConnectWise PSA

I picked ConnectWise PSA as one of the best because of how its workflow engine connects service delivery directly to billing. I like that automated ticket intake, SLA tracking, and billing reconciliation all run on the same workflow layer, so nothing slips through unbilled. The Agreement tie-back feature is particularly useful, automatically reconciling vendor and service data to active agreements so every billable moment gets captured without manual checking.

ConnectWise PSA Key Features

• Time and expense tracking: Log billable hours and expenses directly against service tickets, projects, or agreements.
• Procurement management: Create and track purchase orders, manage vendor costs, and tie procurement to client invoices.
• Project billing milestones: Set project phases with individual billing triggers to invoice clients at defined delivery points.
• Reporting dashboards: View real-time financial and operational data across clients, agreements, and technician activity.

ConnectWise PSA Integrations

ConnectWise PSA integrates with a marketplace of 458+ partners across cybersecurity, finance, and productivity. Key integrations include QuickBooks Online, Xero, and Zapier. An SDK and open API are available for custom integrations.

Bill4Time is a legal time tracking and billing platform that combines time entry, invoicing, trust accounting, online payments, expense tracking, and matter management in one solution. Built around matter-based billing workflows, it helps legal professionals stay organized, simplify billing processes, and manage client work more efficiently. 

Who Is Bill4time Best For?

Bill4time is a natural fit for solo attorneys and small law firms that need trust accounting compliance built into their billing workflow.

Why I Picked Bill4time

Bill4time earns its spot on my shortlist because its trust accounting compliance features are built into the billing workflow itself, not bolted on as an afterthought. I particularly like how it automatically separates earned funds from retainer funds, links trust deposits directly to individual matters, and generates trust ledger reports ready for audits. The built-in safeguards against overdrafts and commingling give solo attorneys and small firms real confidence that every transaction stays within IOLTA and ABA guidelines.

Bill4time Key Features

• Batch invoicing: Review, finalize, and send multiple invoices simultaneously from pre-bill drafts compiled from logged time and expenses.
• One-click time timers: Start, pause, stop, or resume timers that sync directly to specific matters and invoices across desktop and mobile.
• Automated payment reminders: Track overdue invoices and send automated reminder emails to reduce late payments without manual follow-up.
• Client portal: Give clients secure, 24/7 access to invoices, billing history, and online payment options directly from their portal.

Bill4time Integrations

Bill4time offers a smaller set of native integrations, including QuickBooks, Box, Google Calendar, Outlook Calendar, NetDocuments, and LawPay. An API is available for custom integrations, though Zapier support is not clearly documented.

Certinia PS Cloud is a professional services automation (PSA) platform built natively on Salesforce that covers project management, resource planning, billing, revenue recognition, and financial reporting in a single system. 

Who Is Certinia PS Cloud Best For?

Certinia PS Cloud is a natural fit for mid-to-large professional services firms that already run Salesforce as their CRM and want their PSA and billing data in the same ecosystem.

Why I Picked Certinia PS Cloud

I picked Certinia PS Cloud because no other PSA tool on this list runs directly inside Salesforce the way this one does. That means your CRM opportunity data, project billing, and revenue recognition all live on the same record, with no syncing required. I especially like how it connects sales and services early, letting resource managers see staffing demand during the sales cycle so billing can start without delays once a project kicks off. It also handles T&M, fixed-fee, milestone, and subscription billing models within the same platform.

Certinia PS Cloud Key Features

• Revenue recognition automation: Automates revenue recognition from opportunity through delivery, reducing manual billing cycles and revenue leakage.
• Einstein analytics: Uses Salesforce Einstein to run real-time, multidimensional analysis across project actuals, margins, and resource costs.
• Customer and partner communities: Built-in communities give clients and partners secure access to project plans, reports, and billing inquiries in one place.
• Skills-based resource matching: Matches staff to opportunities based on geography, skills, certifications, and experience before a project starts.

Certinia PS Cloud Integrations

Certinia PS Cloud is built natively on Salesforce, integrating with the full Salesforce ecosystem. It offers 25+ additional integrations, including Avalara, SAP Concur, Jira, DocuSign, Expensify, Outlook, Plaid, Conga, MuleSoft, and Xactly. RESTful and SOAP-based APIs are available for custom integrations.