Pricing from $20 per user per month (Essentials) to $55+ per user per month (Premier). A 50-person team on a mid-tier plan typically pays $15,000 to $30,000 per year in licensing. Implementation is typically complete within 60 days, no mandatory SI partner. If billing is your primary PSA need, BigTime delivers strong ROI. If you need resource management, project governance, or AI automation at depth, additional tools will be required, adding to the real TCO. Estimated 3-year TCO for billing-primary use: $55,000 to $100,000.

Pricing from $19 (Standard) to $49 (Business) to $69 (Premium) per user per month. AI capabilities and advanced revenue recognition are gated to the Premium tier. A 50-person team needing full feature access at Premium pays $41,400 per year in licensing, which is competitive at that depth. Implementation takes 2 to 6 weeks. Minimum 5 seats on all plans. Estimated 3-year TCO at Business tier: $90,000 to $130,000; at Premium: $130,000 to $180,000.

BigTime's AI features are limited in 2026. The platform focuses on reliable billing workflow execution rather than intelligence. Some basic automation for time entry reminders, invoice triggers, and budget alerts is available. There is no resource recommendation engine, no proactive delivery health monitoring, and no revenue forecasting automation. For teams that primarily need billing reliability rather than operational intelligence, this is not a barrier. For teams that need PSA AI, BigTime is not the platform.

Rocketlane has introduced AI features including AI-generated project plans, automated status updates, and delivery health summaries. These are useful productivity features that reduce manual work within the delivery workflow. At the Premium tier, more advanced analytics and financial forecasting are available. Rocketlane's AI roadmap is active and improving, but in 2026 it remains below the depth of KAIS for operational automation: it assists delivery managers rather than acting autonomously on delivery data.

BigTime offers resource scheduling through a visual scheduling view, showing team availability and project assignments across time. It handles basic time-based resource planning well for mid-market accounting and engineering firms with stable teams. Skills-based matching, bench management, and capacity forecasting at IT services scale are not first-class features. For firms primarily managing 5 to 30 billable professionals on structured project engagements, BigTime's resource scheduling is adequate.

Rocketlane covers resource management through workload views, capacity planning, and time-based scheduling. It handles resource allocation for project-based delivery teams well and has improved its resource management capabilities with each release cycle. Skills-based bench management at IT services scale, multi-entity allocation, and AI-driven resource recommendations are not current strengths. For SaaS implementation teams where resource pools are smaller and more stable, Rocketlane's resource management is sufficient.

BigTime's billing workflow is the strongest in this comparison for accounting and engineering firm billing models. Time capture to invoice generation is fast, reliable, and highly automated. Multiple billing rates per client, retainer billing, milestone invoicing, and expense reimbursement workflows are all well supported. QuickBooks, Sage, and NetSuite integration is deep and bidirectional. For firms where billing reliability is the primary PSA requirement, BigTime has best-in-class workflow execution. Multi-entity and multi-currency billing at enterprise scale is more limited.

Rocketlane covers standard billing models: T&M, fixed price, and milestone invoicing. Financial reporting and project profitability are available at all tiers. Advanced revenue recognition and financial forecasting are gated to the Premium tier ($69/user). For SaaS implementation teams with standard billing models, Rocketlane's billing coverage is sufficient. For firms with complex multi-entity billing structures or enterprise revenue recognition requirements, Rocketlane requires supplementary tools or the highest pricing tier.

BigTime covers project management through task lists, Gantt charts, and budget tracking against time entries. It is adequate for the delivery workflows of accounting and engineering firms where projects are structured around defined deliverables and tracked by hours. Client portals and collaborative delivery workspaces are not a BigTime strength. Delivery visibility is primarily internal: it shows PMs and billing managers what was captured, not clients what is happening. For firms where client transparency is a requirement, BigTime requires a supplementary collaboration tool.

Rocketlane's project delivery and client collaboration are best-in-class in this comparison. Shared project workspaces, client portals, real-time progress visibility, mutual action plans, and stakeholder communication tools are all built-in first-class features. Clients see what is happening without being asked for a status update. Delivery teams and clients work in the same system. For SaaS onboarding and implementation teams where client experience during delivery is a competitive differentiator, Rocketlane wins this dimension outright.

BigTime's integration strength is accounting platforms: QuickBooks (deep, bidirectional), Sage, NetSuite, and Intacct. Salesforce CRM integration is available. Jira integration is available for project tracking. HRIS integrations are limited: Keka, Darwinbox, and India-specific HRIS platforms are not natively supported. For US-based mid-market accounting and engineering firms, BigTime's integration set covers the core requirements well. For IT services firms in India or GCCs with enterprise HRIS requirements, BigTime's integration coverage is insufficient.

Rocketlane integrates natively with Salesforce (CRM), HubSpot, Jira, Slack, Microsoft Teams, and standard accounting platforms at the project level. Dedicated HRIS integrations and enterprise SAP connectivity are not current strengths. For SaaS and technology services implementation teams with Salesforce or HubSpot as their CRM, Rocketlane's integration set covers the core requirements. For IT services firms needing Keka, SAP, or enterprise HRIS integration, Rocketlane requires custom API work.

BigTime implementations typically complete within 60 days without an SI partner. The platform's focused scope (time, billing, project tracking) means setup decisions are straightforward. Guided onboarding, template libraries, and an accessible configuration interface make initial setup manageable for operations teams. Ongoing admin is minimal: the platform is designed to run without constant configuration changes.

Rocketlane deploys quickly, typically 2 to 6 weeks for a standard implementation team. The platform's design is intuitive and template-driven, making onboarding for delivery teams fast. No mandatory SI partner. Post go-live admin is minimal for delivery teams. Finance and revenue recognition setup at the Premium tier adds configuration complexity, but the base delivery platform is among the fastest to operational in this comparison.