BigTime

BigTime is a professional services automation platform that covers time and expense tracking, project management, billing, and resource planning. It is designed for accounting and consulting firms that manage multiple concurrent engagements with varying billing structures.

Firms use BigTime to track billable time across client engagements, manage project budgets in real time, and plan resource allocation across the team. The platform supports multiple billing methods — fixed fee, time and materials, percentage complete, and retainer — giving firms flexibility to handle different client arrangements within one system. Resource planning features show team availability and utilisation, helping managers assign work and forecast capacity.

BigTime integrates with QuickBooks, Xero, and Sage for invoicing and accounting. It is best suited for mid-sized accounting and consulting firms that need detailed project profitability tracking and resource planning alongside their time and billing workflows.