FAR 31.205
Unallowable Costs

The Contractor's Guide to Unallowable Costs Under
Federal Acquisition Regulation (FAR) Part 31
91
Expressly Unallowable
52
FAR Subsections
9
Audit Sections
#1
DCAA Audit Focus
01 — The Foundation
The Four-Part Allowability Test
Before FAR 31.205 even applies, every cost must pass the four-part allowability test
from FAR 31.201-2. All four conditions must be met simultaneously for a cost to be allowable.

1. Reasonable

A prudent person in the conduct of competitive business would incur this cost. The amount does not exceed what a reasonable person would pay. Nature and amount are consistent with sound business practices.

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2. Allocable

The cost is assignable to one or more cost objectives (contracts, pools) based on relative benefits received. A cost is allocable if it benefits the contract, is necessary for overall operations, or is specifically required by the contract.

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3. CAS/GAAP Compliant

The cost is treated consistently with Cost Accounting Standards (CAS) and Generally Accepted Accounting Principles (GAAP). Consistency in estimating, accumulating, and reporting costs is mandatory.

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4. Contract Terms

The cost is not prohibited by the specific terms or conditions of the contract. Limitations or exclusions in the contract take precedence over general FAR cost principles.

⚠ Key Principle: FAR 31.205 Is the Final Filter

Even if a cost passes all four tests above, FAR 31.205 can still render it unallowable. The 52 subsections of FAR 31.205 define specific cost categories and whether they are expressly unallowable, conditionally allowable, or generally allowable. When in doubt, check the specific subsection.

02 — The Hard No
Always Unallowable Costs
These cost categories are expressly unallowable under FAR 31.205 regardless of circumstances. They must be identified and removed from your indirect cost pools before claiming.

Entertainment

Amusement, diversions, social activities, and related costs. Includes tickets, hospitality suites, meals with no bona fide business purpose, and recreational events for employees or clients.

Unallowable

Alcoholic Beverages

All costs of alcoholic beverages are unallowable. No exceptions. This includes beverages at business meals, company events, or any other occasion regardless of business purpose.

Unallowable

Contributions & Donations

Charitable contributions, donations, and gifts to any organization or individual. Includes sponsorships of charitable events, in-kind donations, and matching gift programs.

Unallowable

Fines & Penalties

Fines, penalties, and late payment charges imposed by federal, state, local, or foreign governments. Includes parking tickets, tax penalties, and regulatory fines.

Unallowable

Lobbying & Political Activity

Costs of lobbying, political contributions, PAC activities, and efforts to influence legislation or executive orders. Includes state and local lobbying.

Unallowable

Bad Debts

Losses from uncollectible receivables and bad debt write-offs. These are business risks unrelated to contract performance and are expressly unallowable.

Unallowable

Goodwill

Any amortization of goodwill arising from business combinations. Excess of purchase price over fair value of tangible assets is unallowable regardless of accounting treatment.

Unallowable

Interest & Financing

Interest on borrowings, bond discount amortization, finance charges, and the cost of financing capital. Exception: CAS 414 Facilities Capital Cost of Money is specifically allowed.

Unallowable

Economic Planning Costs

Costs of general economic planning not related to specific contracts or cost objectives. Broad market studies and economic forecasting outside contract scope.

Unallowable

💡 Adjustment Is the Key

Having unallowable costs in your general ledger is not a problem — every contractor has them. The issue is failing to adjust them out before claiming. Your Schedule B (G&A) and Schedule C (OH) must show adjustments that reduce the claimed amount to zero for these categories. The ICP Dashboard's Smart Validation Engine detects these automatically and verifies your adjustments.

03 — The Official List
91 Expressly Unallowable Cost Principles
Per DCAAM 7640.1 Appendix A (Figure A-1-1), DCAA maintains an official inventory of 91 expressly unallowable cost principles derived from FAR Part 31 and DFARS Part 231. These costs are subject to FAR 42.709 penalty provisions if claimed.
91
Total Entries
35
Compensation (31.205-6)
6
DFARS Additions
42.709
Penalty Provision

Compensation & Pay

16 entries

Excess executive compensation, distribution of profits as additional pay, unreasonable compensation amounts, stock-based compensation (stock options, restricted stock, SARs), severance pay exceeding normal patterns, foreign national severance, and back pay awards.

Includes Raytheon Co. and Exelis Inc. ASBCA case law precedents for stock-based compensation.

Pension & Retirement

13 entries

Unfunded pension accruals, failure to fund within required period (6 months after FY end), segment closing gains/losses, pension asset withdrawals (reversions), plan curtailment costs, ERISA termination adjustments, PBGC premium allocations, and early retirement incentives exceeding 2x normal cost.

DCAA notes penalty provisions apply. Cognizant FAO pension specialist evaluates for significance.

Deferred Comp, ESOP & PRB

9 entries

Deferred compensation not vested within 12 months of earning, ESOP leveraged buyout allocations, ESOP stock purchases above market value, post-retirement benefit (PRB) costs not compliant with CAS 416, and special compensation limitations.

12-month vesting rule is the most common deferred comp finding.

Insurance & Indemnification

6 entries

Self-insurance reserves exceeding actuarial estimates, key-person life insurance costs, property coverage beyond replacement cost, nuclear liability insurance premiums, and insurance for activities that are themselves expressly unallowable.

Excess property insurance is a common finding per entry #54.

Absolute Prohibitions

6 entries

Entertainment costs (zero exceptions), alcoholic beverages (zero tolerance), bad debts and write-offs, goodwill amortization from acquisitions, charitable contributions and donations, and general economic planning costs unrelated to contracts.

Interest & Financial

5 entries

Interest on borrowings (all forms), bond discount and premium amortization, financing charges, and contingency provisions for anticipated penalties or fines. Exception: CAS 414 Facilities Capital Cost of Money is specifically allowed.

Property & Facilities

8 entries

Depreciation exceeding asset fair value, idle facility maintenance and repair costs, idle capacity costs above normal operating range, plant reconversion costs, rental costs exceeding fair market value, and lease-purchase arrangements treated as purchases.

Marketing, Legal & Operations

22 entries

Public relations advertising, lobbying and political activities (all forms), organization and M&A costs, selling costs to non-government customers, legal defense of fraud proceedings, tax exemptions not passed through, trade show costs for promotion, and excessive professional service fees.

Lobbying and organization costs include Raytheon Co. ASBCA precedent.

DFARS & Employee Costs

6 + misc

Government-owned equipment leasing costs (DFARS), additional compensation limits for DoD contracts, DoD lobbying prohibitions, restructuring costs exceeding projected savings, independent research (DFARS cap). Plus: employee morale entertainment, relocation home acquisition costs exceeding limits, first-class travel.

FAR 42.709 Penalty Provisions

Expressly unallowable costs that are claimed carry special penalty provisions under FAR 42.709. If a contractor includes expressly unallowable costs in its proposal, DCAA will assess penalties equal to the disallowed amount (first offense) or up to double the disallowed amount (repeat offenses). The ICP Dashboard scans 21 FAR 31.205 categories automatically and flags potential expressly unallowable costs before submission.

04 — It Depends
Conditionally Allowable Costs
These cost categories are allowable only under specific conditions, within certain limits, or when they meet additional criteria. They require careful documentation and often generate the most DCAA questions.
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Advertising & PR

Unallowable for general promotion. Allowable for recruiting employees, procuring scarce items, disposing of surplus materials, or when specifically required by contract.

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Compensation

Allowable if reasonable for the work performed and consistent with the company's established practices. Executive compensation is capped by the statutory benchmark (currently ~$630K/year for top 5 executives).

Travel Costs

Allowable at economy/coach class. First-class and business-class airfare unallowable unless justified (medical, no other options). Lodging and meals subject to per diem limits or actual cost with justification.

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Insurance & Indemnification

Business insurance is generally allowable. Key-person life insurance, self-insurance reserves, and coverage beyond necessary business scope may be unallowable. Requires documentation of necessity.

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Employee Morale & Welfare

Allowable when related to employee health, safety, and welfare. Social activities, parties, and recreational events may be unallowable if they cross into entertainment. Requires clear business purpose.

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Relocation Costs

Allowable within limits for new hires and transferred employees. Includes moving expenses, temporary living, and house-hunting trips. Must follow company policy and be reasonable in amount.

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Selling Costs

Allowable for proposal preparation, bid costs, and direct selling to the government. Corporate image advertising and costs of selling to commercial customers are unallowable as indirect costs on government contracts.

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Independent R&D / B&P

Allowable subject to a ceiling negotiated in advance agreements. Must benefit government contracts. Basic and applied research costs allocated through the G&A pool. Requires detailed project records.

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Organization Costs

Costs of incorporating, legal fees for business formation, and initial stock issuance are unallowable. Ongoing costs of maintaining corporate status and annual compliance are allowable.

05 — The Green Light
Generally Allowable Costs
These cost categories are generally allowable when reasonable, allocable, and properly documented. They form the bulk of most contractors' indirect cost pools.
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31.205-6: Labor

Salaries, wages, and benefits for employees performing contract work. Subject to reasonableness and executive comp caps.

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31.205-26: Materials

Direct materials, supplies, and parts consumed in contract performance. Standard material handling charges.

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31.205-36: Rent

Facility rental and lease costs at rates consistent with market. Includes leasehold improvements amortization.

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31.205-44: Training

Employee education, training, tuition assistance, and professional development directly related to contractor operations.

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31.205-25: Manufacturing

Manufacturing and production engineering costs, tooling, and equipment maintenance for contract production.

📝
31.205-33: Professional

Professional and consultant service fees, including legal, accounting, and technical consulting when reasonable.

💰
31.205-41: Taxes

Federal, state, and local taxes properly assessed. Includes payroll taxes, property taxes, and sales taxes (not income tax).

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31.205-34: Recruiting

Costs of help-wanted advertising, employment agencies, and travel/relocation for new hires when reasonable.

💡 “Generally Allowable” Still Requires Documentation

Even for allowable costs, DCAA expects contemporaneous documentation: timesheets for labor, receipts for purchases, approved travel authorizations, and evidence that amounts are reasonable. An allowable cost category with poor documentation can still be questioned.

06 — Audit Risk
Top 10 DCAA Audit Targets
Based on our 10+ years of DCAA Audit Experience, these are the FAR 31.205 categories most frequently examined and questioned during incurred cost audits.
#1 — 31.205-6

Executive Compensation

The single most questioned cost category. DCAA compares top-5 executive pay against the statutory benchmark cap. Excess compensation above the cap must be adjusted out.

Highest Risk
#2 — 31.205-46

Travel — Airfare & Lodging

First-class tickets, luxury hotels, and per diem overruns. DCAA verifies travel policies match government rates and compares actual costs against available alternatives.

High Risk
#3 — 31.205-14

Entertainment

Often commingled with legitimate business meals. The line between a business meal and entertainment is a frequent audit dispute. Documentation of business purpose is essential.

High Risk
#4 — 31.205-1

Advertising & PR

General corporate image advertising mixed with allowable recruiting ads. DCAA scrutinizes whether advertising serves an allowable purpose or is general promotion.

Medium Risk
#5 — 31.205-33

Professional Services

Consultant fees questioned for reasonableness and necessity. DCAA looks for duplicative services, excessive rates, and work that could be done in-house.

Medium Risk
#6 — 31.205-13

Employee Morale

Company parties, team events, and wellness programs. DCAA distinguishes between reasonable morale activities and entertainment. Amount and frequency matter.

Medium Risk
#7 — 31.205-22

Lobbying Activities

Trade association dues that include a lobbying component. Contractors must identify and remove the lobbying portion of membership dues and political activities.

Medium Risk
#8 — 31.205-35

Relocation Costs

Loss-on-sale-of-home provisions and excessive temporary living expenses. DCAA verifies amounts against company policy and reasonableness standards.

Medium Risk
#9 — 31.205-19

Insurance Costs

Self-insurance reserves, key-person policies, and coverage amounts in excess of business need. DCAA examines whether insurance costs match actual risk exposure.

Medium Risk
#10 — 31.205-6(j)

Pension & Retirement

Unfunded pension accruals, late funding, segment closing adjustments, and early retirement incentives. DCAA coordinates with cognizant FAO pension specialists. 13 expressly unallowable provisions.

High Risk
07 — The Process
DCAA Incurred Cost Audit Program
Activity Code 10100 is DCAA's standard audit program for post-year-end incurred cost proposals. It defines exactly what auditors examine, in what order, and what evidence they require. Available in Small (v6.3) and Large (v12.3) contractor variants. Visit GovConDash.ai to see what audit program applies to your business.
SECTION 1

Planning & Preliminary

B-01

Permanent file review, management inquiries, internal controls assessment, fraud risk evaluation, reconciliation of proposal to financial statements, voluntary deletions, and materiality assessment.

17 steps • Entrance conference
SECTION 2

Direct & Indirect Labor

D-01

Internal controls over timekeeping, labor analysis and testing plan, substantive analytical procedures, test of details (hours and rates), T&M contract labor verification, and executive compensation cap testing.

11 steps • FAR 31.205-6(p) cap
SECTION 3

Direct Material

E-01

Internal controls over purchasing, material cost analysis, testing plan development, substantive analytical procedures, real-time transaction testing per CAM 6-305.3a, and detailed cost verification.

9 steps • CAM 6-305.3a
SECTION 4

Subcontracts

F-01

Excessive pass-through charge evaluation (FAR 52.215-23, 70% threshold), allocability per FAR 31.201-4, reasonableness per FAR 31.201-3, consent verification, and assist audit coordination with subcontractor auditors.

10 steps • FAR 52.215-23
SECTION 5

Other Direct Costs

G-01

Travel costs (airfare class, per diem, lodging), consultants, equipment, and miscellaneous direct charges. Verification of allocability and reasonableness for each ODC category.

8 steps • Travel focus
SECTION 6

Indirect Expenses

H-01

GL/trial balance analysis, income and credit adjustments, Cost of Money verification against Treasury rates, basic research limitations, pension cost evaluation, health care eligibility, and IR&D/B&P compliance.

15 steps • Most extensive section
SECTION 7

Inter-Org Transfers

I-01

Pricing of work between company divisions and affiliates per FAR 31.205-26(e). Price-based vs. cost-based transfer evaluation, commercial item exceptions per FAR 15.403-1(b), and intercompany profit elimination.

10 steps • FAR 31.205-26(e)
SECTION 8

Compensation Reasonableness

U-1

FAR 31.205-6(p) statutory cap testing, blended cap calculations, position descriptions review, market survey comparisons, escalation factor validation, fringe benefit analysis, and long-term incentive evaluation.

14 steps • FAR 31.205-6(p)
SECTION 9

Concluding Steps

A-01

Audit opinion formulation, questioned cost compilation, expressly unallowable penalty assessment per FAR 42.709-2(b), exit conference, DCAA Form 1 report, DMIS reporting, and CAS noncompliance referral.

11 steps • FAR 42.709 penalties

Small Contractor v6.3

  • Standard 9-section audit program
  • Streamlined planning and preliminary steps
  • Standard labor testing (hours and rates)
  • Basic subcontract verification
  • Standard indirect expense procedures
  • Standard compensation reasonableness review

Large Contractor v12.3

  • Enhanced contract brief reliability testing
  • T&M employee qualifications per FAR 52.232-7(a)(3)
  • Subcontractor billing verification against terms
  • COM rate comparison to published Treasury rates
  • Pension cost significance evaluation & CAS audit
  • Health care dependent eligibility review

💡 Why This Matters for Your ICP

Understanding the DCAA audit program tells you exactly what evidence to prepare. Every step in the 10100 audit program maps to specific schedules in the ICP Dashboard. The ICP Dashboard's adequacy review automates the 47-question DCAA checklist and flags gaps before auditors arrive. Preparation is the best defense.

08 — The Mechanics
How Adjustments Work
The ICP Dashboard handles unallowable costs through the adjustment column on Schedules B and C. Here is the flow from general ledger to claimed amount.

The Adjustment Pipeline

Unallowable costs flow through your general ledger into indirect cost pools just like any other cost. The adjustment column on Schedule B (G&A) and Schedule C (OH) is where you remove them before they reach the claimed rate.

  • Per G/L Amount — The total posted to the general ledger for this account. This is the starting point and includes both allowable and unallowable portions
  • Adjustment Amount — A negative dollar amount that removes unallowable costs. For fully unallowable accounts, the adjustment equals the negative of the G/L amount
  • Claimed Amount — Per G/L + Adjustment. This is what goes into your indirect rate calculation. For properly adjusted unallowable costs, this should be $0
  • Rate Impact — The claimed amount flows into the pool total on Schedule A. Smaller pool = lower rate = lower cost to the government
Schedule B G&A Pool
Schedule B showing G&A pool accounts with Per G/L, Adjustments, and Claimed columns

Common Adjustment Mistakes

DCAA auditors frequently find these adjustment errors in incurred cost proposals. Each one can result in questioned costs or an inadequacy determination.

  • Missing Adjustments — Unallowable costs left in the pool with no adjustment. The most basic error and the easiest to catch with automated scanning
  • Partial Adjustments — Only part of an unallowable amount is adjusted out. Common with accounts that contain both allowable and unallowable costs (e.g., travel with first-class tickets)
  • Wrong Direction — Positive adjustments that increase rather than decrease the pool. Adjustments for unallowable costs should always be negative
  • Wrong Schedule — Adjustments placed on Schedule B when the account belongs to an OH pool (Schedule C), or vice versa. Must match the account's pool assignment
Schedule C OH Pool
Schedule C showing Overhead pool accounts with adjustment column for removing unallowable costs
09 — Quick Reference
FAR 31.205 Checklist
Use this as a quick reference when reviewing your incurred cost proposal for unallowable costs. Every item here represents a common DCAA finding.

Scan for Entertainment (31.205-14)

Search GL for "entertainment", "amusement", "tickets", "hospitality". All must be adjusted to $0 claimed.

Verify Executive Comp Caps (31.205-6)

Compare top-5 executive pay against the statutory benchmark. Excess above the cap must be removed as an adjustment.

Remove Alcohol Costs (31.205-51)

All alcoholic beverage costs must be adjusted out. No exceptions, no conditions, no thresholds. Zero tolerance.

Flag Donations & Contributions (31.205-8)

Charitable giving, sponsorships, matching gifts, and in-kind donations. All must be identified and adjusted out of indirect pools.

Check Travel Policies (31.205-46)

Verify no first-class airfare, luxury hotels, or per diem overruns are being claimed. Coach-class only unless specifically justified.

Separate Lobbying Costs (31.205-22)

Trade association dues with lobbying components must be split. Only the non-lobbying portion is allowable. Request allocations from associations.

Remove Fines & Penalties (31.205-15)

Late fees, tax penalties, parking fines, and regulatory penalties. Scan for "fine", "penalty", "late fee", "violation" in account names.

Document Conditional Costs

For conditionally allowable categories (advertising, morale, relocation), maintain documentation proving the allowable business purpose and reasonableness.

Verify Adjustment Math

For every unallowable account: Per G/L + Adjustment = $0 (fully unallowable) or a documented allowable remainder (partially unallowable).

Use Automated Scanning

The ICP Dashboard's Smart Validation Engine scans 21 FAR 31.205 categories automatically and verifies adjustments against Schedule B/C data. Let the system catch what humans miss.

Know the Rules. Claim with Confidence.

FAR 31.205 defines which costs are allowable on government contracts. With 91 expressly unallowable cost principles and 9 DCAA audit sections to navigate, the ICP Dashboard scans categories automatically, verifies your adjustments, and flags issues before DCAA finds them.

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