Project Time & Billing Software
That Protects Your Margin
Track time, manage complex billing rules, control WIP, and sync directly to your general ledger – all in one connected financial system.
Here's Why Dozens of Companies Have Chosen BigTime
Operational Financial Visibility
See budget vs. actual, margin, and WIP in real time.
Flexible Billing Models
Support hourly, T&M, milestone, and blended rate structures.
Accurate Invoicing
Automate invoice generation without reconciliation chaos.
Deep Accounting Integration
Sync seamlessly with QuickBooks Desktop, Online, and Sage.
Trusted by 3,000+ firms worldwide
From CPA firms to engineering consultancies and IT services teams, organizations rely on BigTime as their billing engine – connecting time, delivery, and financial reporting in one system.
“BigTime empowers our managers to get the data in real time and use it to make decisions on projects.”
-50%
invoicing time
Kyle MacDonald
CFO, Aegis Project Controls
“BigTime was a great solution because we were able to do the project management, the invoicing, the timecard — everything all in one place.”
+26%
increase in revenue
Leslie Pink Morgan
COO, Isaman Design Inc
“BigTime is literally the DNA of our professional services organization.”
+66%
increase in productivity
Richard Sides
CEO, Adroit North America
Everything You Need to Run Time & Billing with Confidence
BigTime goes beyond timesheets – connecting time tracking directly to billing, costing, and accounting for complete financial visibility.
Advanced time tracking
Cut month-end reconciliation with intuitive mobile and office time entry.
Flexible Rate Cards
Apply client-, role-, or project-based rates without manual invoice adjustments.
Time & Materials Billing
Automate T&M billing with built-in WIP tracking and cost alignment.
Budget vs. Actual Visibility
Monitor project performance in real time before margins slip.
Automated invoicing
Generate accurate invoices from approved time and expenses in seconds.
WIP Control
Track, review, and adjust work-in-progress before it impacts revenue.
Accounting Integration
Sync seamlessly with QuickBooks and Sage for clean financial reporting.
Profitability Insights
See margin by client, project, or service line in real time.
Built for Firms Where Time Is Revenue
BigTime adapts to how you bill, structure projects, and manage profitability – across accounting, consulting, and engineering firms.
- Track time by engagement and service line
- Manage partner vs staff rates
- Sync seamlessly with QuickBooks and Sage
- Bill hourly, by milestone, or T&M
- Protect margin with real-time budget visibility
- Deliver detailed, client-ready invoices
- Manage phase-based billing
- Track labor costs and blended rates
- Monitor project costing and profitability
Basic Time Billing Tools Can Work – Until Complexity Increases
If your team spends more time adjusting invoices, reconciling WIP, or exporting data to accounting than analyzing profitability, it may be time for a system built around financial control – not just timesheets.
 |
 |
|
| Implementation & Scalability | Deploys in weeks with guided onboarding and clear time-to-value miles. | Quick to launch for basic needs, but hard to scale as billing grows more complex. |
| Time & Expense Tracking | Integrated time and expense tracking with real-time cost and margin visibility. | Capture hours worked, but limited visibility into cost and margin impact. |
| Billing & Invoicing | Automates hourly, milestone, and T&M billing with built-in WIP control. | Handle basic hourly billing, but require manual edits for complex contracts. |
| Accounting Integration | Bi-directional integration with QuickBooks and Sage for accurate financial alignment. | Often rely on manual exports or limited accounting sync. |
| Profitability Visibility | Real-time visibility into budget, utilization, and project-level profitability. | Basic reports focused on hours and invoices. |
A Single Platform For Your Full Project Billing Lifecycle
From time entry to cash collection, BigTime connects every stage of financial delivery.
Connected Financial Visibility – From Quote to Cash
When billing complexity increases, financial visibility must increase with it. BigTime keeps your delivery and accounting aligned – protecting margin at every stage.
Delivery Management
Plan capacity with ease. Forecast and allocate resources to match demand, while keeping overhead low.
Integrated Quoting
Connect sales to delivery with quotes that pull from historical performance and auto-convert to project plans.
Cost-Effective Staffing
Plan your team’s capacity with precision. Forecast and allocate resources to match demand, while keeping overhead low.
Works With the Tools You Already Use
BigTime connects seamlessly with QuickBooks, Salesforce, HubSpot, Lacerte, and more – plus custom API access to fit your exact needs.
Recognized by Leading Firms for Financial Precision
How Priority Designs Recovered $50K in Annual Revenue with BigTime Delivery
“[Prior to BigTime] I was spending so much time in the weeds trying to make sure that each project ran successfully, but I didn’t have time to actually do CFO things. PMs didn’t feel like they had the ability to be good project managers because they weren’t comfortable with the information they were getting.”
in recaptured productivity
in recovered invoices
Todd Henson
CFO
How HPE Increased Cash Flow While Reducing Reconciliation Time and Effort
“I spend less of my time making sure that everything is correct in the books and going to the CPA. That’s an increase in revenue because it’s a decrease in my time spent on admin—I’m able to take on more work because I don’t have to spend my time reconciling payments.”
saved moving data to QuickBooks
in staff utilization
Jen Henderson
President
How Patomak Global Partners Accelerated Invoicing With Easy-to-Use Time & Expense Tracking
“With BigTime, I’ve been able to go from spending 100% to 75% of my time on accounts receivable. Now I can spend 25% on billable [tasks]. It allows our company to make more billable use out of an employee like me.”
improvement in average invoice turnaround
decrease in manual time spent invoicing
Nic Bewley
Senior Analyst & Billing Operations
