Federal Contractor Billing Software — Honest Comparison of FieldLedger, Unanet, Deltek, PROCAS, and QuickBooks-Plus-Add-on

Federal contractor billing software is a fragmented market. The right pick depends on contract type mix, employee count, and how DCAA-rigorous your environment needs to be. This is the honest comparison across the five paths most small contractors consider.

The five paths

Path	Cost (20 users)	Best for
QuickBooks Online + federal add-on	$1,200/yr + $1,200/yr add-on	Pre-DCAA contractors, sub-$1M federal revenue
FieldLedger + QuickBooks Online	$2,900/yr	DCAA-compliant SMBs, $1M–$15M federal revenue
Unanet GovCon	$15K–$40K/yr	Mid-market, $10M–$50M federal revenue
Deltek Costpoint Essentials	$40K–$80K/yr (incl. consulting)	Larger SMBs to mid-market, $25M–$100M
Deltek Costpoint Premier	$100K+/yr	Mid-market to enterprise, $50M+

Above ~$100M revenue, the conversation shifts to enterprise ERP (full Deltek Vantage, SAP NS2, Workday + ERP add-ons). Below ~$1M federal revenue, the conversation is about whether DCAA compliance is required at all.

Path 1 — QuickBooks Online + federal add-on

Setup: QuickBooks Online Plus or Advanced for the GL. A federal-specific add-on (e.g., a third-party DCAA-compliance plugin) layered on top.

Cost: ~$2,400/yr total ($90/mo QBO + $100/mo plugin).

What it covers:

• General ledger
• AP and AR
• Bank reconciliation
• Basic project tracking
• Some indirect rate calculation
• Some federal invoice formatting

What it doesn't cover:

• DCAA-compliant timekeeping with full audit trail
• ICE Model Schedule production
• Indirect rate engine (FAR 31.2 compliant)
• Federal-specific invoicing patterns
• Multi-CLIN contract structures

Best for: Contractors with no current DCAA audit exposure, mostly FFP work, single-contract simplicity. Bidding for first DCAA-required contract is the trigger to upgrade.

Watch out for: Most "federal add-ons" cover 50–70% of DCAA requirements. The remainder shows up at first DCAA audit and you're scrambling. If your contracts have any CPFF or T&M components, this path is generally insufficient.

Path 2 — FieldLedger + QuickBooks Online

Setup: QuickBooks Online for the GL. FieldLedger for DCAA-compliant timekeeping, indirect rates, federal invoicing, and project cost segregation.

Cost: $149/mo FieldLedger + $90/mo QBO Plus = $2,868/yr.

What it covers:

• DCAA-compliant timekeeping (every entry attributable, immutable, retained)
• Project cost segregation (direct vs indirect)
• Indirect rate engine (FAR 31.2, Structure A or B, with 14 ASBCA case tests)
• Federal invoicing (CPFF, T&M, FFP, hybrid)
• ICE Model Schedules (H/I/K/L)
• Wrap rate calculator
• USACE EP 1110-1-8 equipment rates
• NIST 800-171 family 3.3 audit trail satisfaction (5 of 9 controls)

What it doesn't cover:

• General ledger (QBO handles this)
• AP and AR (QBO)
• Multi-subsidiary consolidation (out of scope)
• CAS-specific Disclosure Statement support
• Proposal pricing module
• Enterprise resource planning beyond cost accounting

Best for: Federal contractors with DCAA exposure under $15M federal revenue. Especially good for SDVOSB / 8(a) / WOSB contractors growing through the SBA program ladder.

Trade-off: You manage two systems (FieldLedger + QBO) instead of one. Most SMBs find this easier than one ERP because each tool is best-of-breed at its job. The integration is bidirectional — direct journal entries flow from FieldLedger to QBO, AR aging flows back.

Path 3 — Unanet GovCon

Setup: Unanet's federal-focused ERP — timekeeping, project accounting, billing, GL, AR/AP, reporting.

Cost: $15K–$40K/yr depending on user count and modules. Implementation consulting typically $20K–$50K.

What it covers:

• Full ERP for federal contractors
• DCAA-compliant timekeeping
• Indirect rate calculation
• Federal invoicing patterns
• Project profitability reporting
• Resource forecasting
• Some CAS support

What it doesn't cover:

• Sub-$5M revenue contractors find it overkill
• Heavy customization patterns (not a strong CRM, not a strong proposal tool)

Best for: Mid-market federal contractors ($10M–$50M revenue) who want everything in one system and can absorb the consulting bill.

Watch out for: Implementation timelines (3–6 months typical) and per-seat licensing that grows linearly with headcount.

Path 4 — Deltek Costpoint Essentials

Setup: Deltek's mid-market ERP for federal contractors. Includes GL, AP, AR, project accounting, timekeeping, billing.

Cost: $800/mo base license + $15K–$50K initial implementation consulting + $5K–$15K/yr ongoing consulting + per-seat licensing.

For a 20-person contractor: realistic total Year 1 = $40K–$80K, ongoing $25K–$40K/yr.

What it covers:

• Full mid-market ERP
• Deep DCAA support
• Modified CAS coverage support
• Multi-contract project profitability
• Federal invoicing across all contract types
• Strong reporting

What it doesn't cover:

• Modern UI (the platform feels client-server era)
• Cloud-native architecture (most deployments are managed-cloud, not SaaS)
• Quick ramp (12-week implementations standard)

Best for: Larger SMBs to mid-market ($25M–$100M federal revenue), CAS-covered contractors, or contractors specifically required to use Costpoint by a prime contract.

Watch out for: Per-seat licensing punishes growth. Vantage GL integration adds $10K–$20K. Custom reports are a Deltek-certified consultant cost line item.

See Deltek Costpoint alternative comparison for the full TCO analysis.

Path 5 — Deltek Costpoint Premier

Setup: Deltek's full enterprise ERP. All of Costpoint Essentials plus advanced modules (proposal pricing, resource planning, talent management, CRM).

Cost: $100K–$500K+/yr depending on modules and user count.

Best for: $50M+ federal revenue contractors, multi-subsidiary structures, contractors requiring proposal pricing module integration.

Watch out for: Beyond this scale, the conversation shifts to enterprise ERP selection (SAP NS2, Workday + add-ons, custom Deltek Vantage stacks).

Decision matrix by federal revenue

Federal revenue	Recommended path
< $1M	QuickBooks + federal add-on
$1M–$15M	FieldLedger + QuickBooks Online
$15M–$50M	Unanet GovCon (good fit)
$25M–$100M	Deltek Costpoint Essentials (if CAS or complex)
$50M+	Deltek Costpoint Premier or full ERP

The boundaries are fuzzy. A $5M contractor with all CPFF complexity may need Unanet; a $20M contractor with all FFP simplicity may stay on FieldLedger.

Decision matrix by complexity

If revenue is similar but complexity differs:

You have	Lean toward
Mostly FFP, simple billing	Lower-cost path
Mix of CPFF + T&M + FFP	DCAA-compliant path (FieldLedger or Unanet minimum)
CAS-covered (>$7.5M single contract)	Costpoint or Unanet
Multi-subsidiary	Costpoint or Unanet
1099 contractor heavy	FieldLedger or Unanet (per-seat models punish you)
First DCAA audit looming	DCAA-compliant path now
FedRAMP-required tooling	Most paths require platform + GovCloud hosting decisions

Decision matrix by contract type

Contract type	Minimum capability
FFP only	QuickBooks + federal add-on
T&M	DCAA-compliant timekeeping mandatory (FieldLedger floor)
CPFF	DCAA-compliant + indirect rate engine + ICE Model Schedules
Cost-plus-incentive-fee (CPIF)	Add fee-calculation logic; usually requires Unanet+
Multi-CLIN with mixed types	DCAA-compliant + multi-CLIN invoicing (FieldLedger or up)

What integration looks like

Each path has different integration patterns:

QuickBooks + add-on: Add-on layers on QBO. Single login, single data store. Minimal integration work but limited capability.

FieldLedger + QBO: Direct OAuth integration. Direct journal entries flow from FieldLedger to QBO. AR balance flows back. Customer master is shared. Two logins but tightly integrated.

Unanet GovCon: Single system. No integration headaches but no swappability either. Migration in/out is a project.

Costpoint Essentials: Single system if you take Vantage GL. If you want to use QBO for GL, add a custom integration ($10K–$20K consulting).

Costpoint Premier: Designed as the full stack. Module integration within Deltek is native; integration with non-Deltek tools is a custom build.

When to switch

Three signals you've outgrown your current path:

1. Manual workarounds for billing patterns. If you're exporting from your accounting system to Excel to produce a federal invoice, you've outgrown your current tool.

2. DCAA audit findings. First DCAA audit identifying gaps (audit trail, indirect rate calculation, unallowable cost segregation) is the upgrade trigger.

3. Per-seat license cost approaching FieldLedger's flat rate. When QuickBooks + add-on or Costpoint per-seat hits ~$3K/yr for your headcount, the math flips.

Two signals you're spending too much:

1. Most of your tool's capabilities are unused. If you're on Costpoint Essentials but only use 30% of the feature surface, you're paying for capacity you don't need. Downsize.

2. Per-seat costs growing with headcount on otherwise simple work. If your contracts are all FFP and you're paying $80/user/mo for Costpoint, you're overspending. Migrate to a flat-fee tool.

What to do this quarter

1. Inventory your current tooling. What do you pay annually total for accounting + billing + timekeeping + reporting?

2. Map your contract type mix. % FFP / CPFF / T&M / hybrid?

3. Identify your largest pain point. Audit risk? Per-seat creep? Manual workarounds? DCAA gaps?

4. Get pricing from the next-best alternative. If you're on Costpoint, get Unanet and FieldLedger quotes. If you're on QuickBooks-plus-add-on, get FieldLedger quote.

5. Run a 30-day shadow trial of the alternative. Most platforms support this. Confirm the alternative actually does what you need before committing.

Related reading

• Cost Accounting Standards (CAS) explained
• Cost-plus-fixed-fee vs time-and-materials contracts
• Deltek Costpoint alternative — FieldLedger comparison
• Unanet alternative for SMB
• DCAA-compliant timekeeping software under $200/month