Independent, vendor-neutral comparisons of ERP, PSA, and project management software for consulting, agency, accounting, and advisory firms. We analyze real pricing, real implementation timelines, and real tradeoffs — not marketing collateral. Whether you're evaluating BigTime, NetSuite PSA, QuickBooks alternatives, or just trying to understand what you actually need from your operations stack, these guides cut through the noise and give you actionable decision frameworks.
Featured Comparison
Mid-market PSA speed vs. enterprise ERP depth. We break down implementation timelines, year-one costs, feature gaps by firm size, and the hidden implementation costs that don't appear in vendor quotes. 15+ comparison dimensions for consulting firms 10–200 employees.
Firm Size Sweet Spot
15–200
employees
By Tool Category
Accounting vs ERP
When do services firms outgrow QBO? We break down the trigger points at which QuickBooks becomes a liability — and what to move to.
Read comparison →PSA vs Manual
When does upgrading from Excel actually pay off? The real cost analysis for consulting firms at the 10–50 person inflection point.
Read comparison →Enterprise ERP vs Manual
The $100K implementation question: when does enterprise PSA make sense for a services firm?
Read comparison →PSA Alternatives
Full PSA vs PSA-lite vs WorkPulse: 13-row comparison of all three categories with year-one cost breakdown and decision framework.
Read comparison →Modern Finance Tools
Modern accounting built for services firms vs. full-suite ERP. Is NetSuite's complexity worth it?
Read comparison →Modern Finance Tools
Two modern finance tools purpose-built for services firms. Revenue recognition, project margin visibility, and integrations compared.
Read comparison →Pricing Comparison
Year-one cost breakdown for BigTime vs NetSuite PSA: licensing, implementation, training, and hidden costs for firms 15–200 employees.
Read comparison →Mid-Market PSA
12-dimension comparison: resource management, billing, implementation, and year-one costs for 30–100 person professional services firms.
Read comparison →Mid-Market PSA
BigTime-first framing: year-one costs, implementation speed, and firm-size fit for 15–150 person services firms. $15K–$27K vs $20K–$40K.
Read comparison →Platform Migration
What actually changed after the 2022 rebrand — pricing impact, feature migration, and what to know if you’re evaluating or leaving either platform.
Read comparison →BigTime Product Guide
February 2026 rebrand explainer: Projector PSA → BigTime Enterprise PSA + new Services CPQ. Which tier fits your firm, and who should look elsewhere?
Read guide →DCAA-Compliant PSA
Enterprise A&E vs mid-market GovCon: year-one costs ($75K–$250K vs $43K–$108K for 50-person firms), DCAA compliance depth, and implementation time.
Read comparison →Standalone vs Salesforce PSA
Best-in-class time management vs Salesforce-native full PSA. Year-one costs ($30K–$81K vs $75K–$195K for 50-person firms), implementation (4–8 weeks vs 3–9 months).
Read comparison →Integrated ERP vs PSA
Built-in accounting + project ERP vs standalone PSA that layers on QuickBooks. Year-one costs ($18K–$55K vs $12K–$45K for 50-person firms), implementation, and which firm type each serves.
Read comparison →Technology Consulting
PSA suitability for 30/50/100-person tech consulting firms. T&M billing complexity, multi-project resource allocation, and SaaS implementation tracking.
Read comparison →Risk & Compliance
Audit trail requirements, fixed-fee profitability tracking, and regulatory deadline management for 30/50/100-person compliance consulting firms.
Read comparison →Management Consulting
Project-based billing, consultant utilization tracking, and client profitability analysis for 30/50/100-person management consulting firms.
Read comparison →IT Consulting
Long-term support, resource scheduling, and project portfolio management for IT consulting firms evaluating BigTime as their PSA solution.
Read comparison →By Business Problem
Spreadsheets vs. full ERP migration vs. WorkPulse. Which actually delivers project-level margin visibility for 15–100 person firms?
Read guide →How accounting and advisory firms track project profitability without migrating to full ERP — and why most are stuck using spreadsheets.
Read guide →The operational definitions every professional services owner needs to understand — and how they differ from revenue utilization.
Read guide →By Industry Vertical
Structural, civil, and MEP consulting
View vertical page →Public accounting, tax, and advisory firms
View vertical page →Strategy and management consulting
View vertical page →Digital, creative, and media agencies
View vertical page →Commercial and residential architecture
View vertical page →Life sciences and healthcare advisory
View vertical page →Managed services and IT consulting
View vertical page →L&D and professional education
View vertical page →Common Questions
What is the best PSA software for professional services firms?
It depends on firm size and complexity. BigTime leads for 15–200 person US consulting firms with 4–12 week implementations. NetSuite PSA suits larger or ERP-committed firms needing deep financial integration. For firms wanting project visibility without replacing their stack, WorkPulse ($149/mo) delivers PSA-grade reporting in minutes rather than months.
When should a services firm replace QuickBooks with dedicated ERP?
Most firms hit the trigger point around 10–15 employees and $1.5M+ revenue. Warning signs: inability to track project-level margin, manual timesheet assembly eating 5+ hours/week, no utilization visibility, and revenue recognition requiring spreadsheet gymnastics.
How much does professional services ERP software cost in year one?
Full PSA suites (BigTime, Kantata, NetSuite PSA) run $35,000–$400,000+ year one. PSA-lite tools (Scoro, HubPlanner) run $5,000–$20,000. WorkPulse starts at $149/mo with no implementation fee — accessible for firms wanting PSA-grade reporting without the enterprise price tag.
Can you get project margin visibility without migrating from QuickBooks?
Yes. WorkPulse layers on top of existing accounting software — no migration required. Upload timesheet CSV weekly, get a 13-week rolling margin report every Monday. Tradeoff: no deep financial integration or automated billing — that's where full ERP wins.
What's the implementation timeline for major PSA platforms?
BigTime: 4–12 weeks. Kantata/Mavenlink: 8–20 weeks. NetSuite PSA: 6–18 months. Deltek: 6–12 months. WorkPulse: 4 minutes from signup to first report. Most firms underestimate the cost of running old systems in parallel during cutover — add 4–12 weeks of duplicate overhead.
When do spreadsheets stop working for project tracking?
Roughly 8–12 employees and $1M+ revenue. Below that threshold, PSA overhead often outweighs the benefit. Above it, spreadsheet tracking costs 5–10 hours/week of senior staff time — $25,000–$75,000/year in fully-loaded labor — and produces data that's 2–4 weeks stale by the time it's assembled.
The exact 5 metrics that separate 40%+ margin firms from the rest — and how to benchmark yours in under 10 minutes. For professional services owners.
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