BigTime vs Deltek
Keep the Financial Depth. Leave the Deltek Overhead.
PSA that runs alongside your GL, not instead of it.
Deltek is built to be your entire ERP. BigTime PSA is built to run project economics: multi-entity billing, rate cards, and margin, connected to the accounting system you already trust.
With our old PSA system, we spent way too much time correcting for known inconsistencies in much of our data and questioning the integrity of the rest. With BigTime PSA, we can finally get back to running our business.
— Bob Radolph, Chief Financial Officer, Avasant
Here's why 3000+ US-based professional services firms use BigTime
Clear project tracking from scenario testing to payment
Real-time resource and profitability insights
CPQ enhanced by time & expense insights for faster & high-margin quoting
Budgeting that matches how you work—fixed fee, T&M, or custom billing rules
Deltek is known for project-based ERP built for GovCon and A&E…
…but for services firms that need project margin and multi-entity billing without an ERP rebuild, BigTime PSA gets there faster.
Your ERP should keep the books. Your PSA should protect margin.
If every new rate card, report, or billing rule turns into a partner ticket, it's time to look at BigTime PSA: purpose-built for project economics and rolled out in phases.
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| Core Focus | PSA for project economics: rate cards, billing, WIP, and margin across entities | Project-based ERP suite spanning GL, payroll, HR, and CRM, strongest in GovCon and A&E |
| Implementation Time | Phased rollout with the first billing cycle live in 60–90 days, run by an in-house U.S. team | Partner-led projects; Deltek partners cite 4–9 months from kickoff to go-live |
| Accounting & GL | Runs as a multi-company sub-ledger alongside Sage Intacct, Business Central, GP, or QuickBooks | Replaces your accounting system, so adoption means a full ERP migration |
| Multi-Entity & Currency | Automatic intercompany transactions, dated FX rates, and a chart of accounts per company | Deep multi-company capabilities, set up and maintained as ERP configuration |
| Billing & Invoicing | T&M, fixed fee, not-to-exceed with hard caps, retainers with overage, and milestones | Robust billing, built around ERP workflows and A&E contract terms |
| Project Budgeting | Time-phased budgets, estimate-at-completion alerts, and forecast accuracy reporting | Comprehensive budgets; reviewers call reports slow and hard to build |
| Resource Management | Skills-based scheduling with request-and-book workflows across teams and locations | Capable planning tools inside a broader, ERP-style interface |
| Ease of Use | Built for the people who log time, not only for accountants; 4.5/5 ease of use on G2 | 3.6/5 ease of use on Capterra (Vantagepoint); reviewers say it feels built for accountants |
| Integrations | In-house connectors for Salesforce, HubSpot, Jira, Smartsheet, ServiceNow, and Power BI | Broad Deltek ecosystem, with the most value when you stay inside it |
| Support & Services | Dedicated U.S. implementation specialist, CSM, and executive sponsor; 9.6 support on G2 | 4.0/5 support on Capterra (Vantagepoint); upgrades are often partner-led |
| Total Cost of Ownership | One subscription and in-house onboarding, with no ERP replacement to fund | No public pricing, multi-year terms, and partner fees for implementation and upgrades |
Core Focus
PSA for project economics: rate cards, billing, WIP, and margin across entities
Project-based ERP suite spanning GL, payroll, HR, and CRM, strongest in GovCon and A&E
Implementation Time
Phased rollout with the first billing cycle live in 60–90 days, run by an in-house U.S. team
Partner-led projects; Deltek partners cite 4–9 months from kickoff to go-live
Accounting & GL
Runs as a multi-company sub-ledger alongside Sage Intacct, Business Central, GP, or QuickBooks
Replaces your accounting system, so adoption means a full ERP migration
Multi-Entity & Currency
Automatic intercompany transactions, dated FX rates, and a chart of accounts per company
Deep multi-company capabilities, set up and maintained as ERP configuration
Billing & Invoicing
T&M, fixed fee, not-to-exceed with hard caps, retainers with overage, and milestones
Robust billing, built around ERP workflows and A&E contract terms
Project Budgeting
Time-phased budgets, estimate-at-completion alerts, and forecast accuracy reporting
Comprehensive budgets; reviewers call reports slow and hard to build
Resource Management
Skills-based scheduling with request-and-book workflows across teams and locations
Capable planning tools inside a broader, ERP-style interface
Ease of Use
Built for the people who log time, not only for accountants; 4.5/5 ease of use on G2
3.6/5 ease of use on Capterra (Vantagepoint); reviewers say it feels built for accountants
Integrations
In-house connectors for Salesforce, HubSpot, Jira, Smartsheet, ServiceNow, and Power BI
Broad Deltek ecosystem, with the most value when you stay inside it
Support & Services
Dedicated U.S. implementation specialist, CSM, and executive sponsor; 9.6 support on G2
4.0/5 support on Capterra (Vantagepoint); upgrades are often partner-led
Total Cost of Ownership
One subscription and in-house onboarding, with no ERP replacement to fund
No public pricing, multi-year terms, and partner fees for implementation and upgrades
Switching is easier than you think
We’ll make your move simple—with dedicated onboarding,
data migration, and training designed around your business.
#01
Personalized onboarding with a PSA expert
#02 Migration from Deltek support
#03
Hands-on training for your team
#04
Dedicated Customer Success and Support resources
Trusted by 3000+ US professional services firms
Join thousands of firms that have made the switch and turned it into improved utilization and higher profits.
We were taking 60 days from the end of a period to get time and expenses in, approved, and the invoices out. Now, with BigTime we’re down to about 20 days.
We’re getting paid much faster than we were previously and our days sales outstanding dropped nearly six days entirely across the company due to these efficiencies being added.
BigTime has provided us with the tools to maximize our efficiency when entering time and expenses against consulting projects.
We want to base our decisions on real time data to be competitive and optimize – and we couldn’t achieve that with spreadsheets.
Frequently Asked Questions
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