Contract Administration 101: Managing Your First Federal Contract

Winning a federal contract is exciting. What comes next — actually performing the contract, invoicing correctly, responding to government inquiries, and managing deliverables — is where many new contractors stumble.

Federal contract administration is more demanding than commercial contract management. There are strict invoicing rules, reporting requirements, performance monitoring systems, and legal obligations that have no commercial equivalent. Getting them wrong can lead to payment delays, contract disputes, or in serious cases, default termination.

This guide covers what you need to know from contract award through final payment.

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Key Players After Award

Contracting Officer (CO)

The only government official with legal authority to modify your contract or obligate funds. Every significant decision — adding scope, modifying prices, exercising options — requires a bilateral modification signed by the CO.

Critical rule: Never perform work based on verbal direction from anyone other than the CO. If the program manager (government's technical representative) asks you to do something outside the contract scope, that is scope creep. Get a contract modification before you do the work or you may not get paid.

Contracting Officer's Representative (COR)

The CO delegates day-to-day technical oversight to the COR. The COR:

• Monitors your technical performance
• Reviews and approves deliverables
• Communicates performance issues to the CO
• Reviews and recommends approval of invoices (in many agencies)

Build a strong working relationship with your COR. They write your CPARS assessment. They tell the CO whether you are performing well or poorly.

Contract Specialist

The administrative support person for the contracting office. Handles paperwork, modifications, and communication. Your day-to-day government contact for administrative questions.

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The Contract File: What to Maintain

From day one of contract performance, maintain a comprehensive contract file with:

Contract documents:

• Signed contract and all modifications
• Original solicitation (RFP) and any amendments
• Your accepted proposal

Performance records:

• All deliverables submitted and government acceptance/rejection notices
• Meeting notes and action items from government meetings
• Written communications with the CO and COR (never verbal-only)
• Travel and expense records (for T&M and cost-reimbursement contracts)
• Timesheets for all employees charging to the contract

Financial records:

• Invoice copies and confirmation of receipt
• Payment records
• Cost tracking by contract line item (CLINs)

The government can audit your contract records for up to three years after final payment (FAR 4.703). Do not discard anything.

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Invoicing: The Most Common Source of Problems

Incorrect invoices are the number one cause of payment delays. Federal agencies have strict invoice requirements, and a single missing field can result in rejection.

Invoice Requirements (FAR 32.905)

A proper invoice must include:

• Your name and address
• Invoice date and number
• Contract number and task/delivery order number (if applicable)
• Description of services/goods delivered
• Quantity, unit price, and extended price for each line item
• Contract line item number (CLIN) for each charge
• Payment terms
• Your TIN (for new vendors)
• Bank information (for EFT — typically not on the invoice itself if set up in SAM.gov)

Missing any of these → rejected invoice → payment clock resets.

Invoicing Systems

IPP (Invoice Processing Platform): The Treasury's standard federal invoicing system. Most civilian agencies use it.

WAWF (Wide Area Workflow): DoD's invoicing system. Required for virtually all DoD contracts. WAWF is separate from IPP.

Agency-specific portals: Some agencies (VA, NASA) use their own invoicing systems.

Set up your accounts in the appropriate system immediately after contract award — do not wait until you have your first invoice to create the account.

T&M and Labor-Hour Invoice Detail

For T&M and labor-hour contracts, invoices typically require:

• Labor category for each charged hour
• Employee name (sometimes — check Section G of your contract)
• Hours charged per period
• Labor rate
• Extended cost
• Supporting timesheets (may be attached or on file)

Invoicing Frequency

Most contracts specify invoicing frequency in Section G:

• Monthly is most common
• Semi-monthly for large contracts
• At milestone completion for fixed deliverable contracts

Submit on time — agencies budget payment disbursements on regular cycles. Missing invoice submission windows delays your payment by the same cycle.

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Managing Deliverables

Every contract has deliverables — reports, systems, services, personnel, data. The Contract Data Requirements List (CDRL) or deliverables schedule defines:

• What is due
• When it is due
• In what format
• To whom

Build a deliverables calendar on day one. List every required deliverable, its due date, the responsible person on your team, and the government acceptance point. Review weekly.

Government Acceptance Process

The government typically has a defined period (5–30 days, depending on the contract) to accept or reject each deliverable:

• Accept: Work done; invoice for it
• Conditionally Accept: Work needs minor revision; submit revision and invoice
• Reject: Major deficiency; fix and resubmit; no invoice until accepted

Track acceptance notices in writing. An email confirmation from the COR counts. Accepted deliverables become your invoice basis.

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Modifications: When Scope Changes

Contracts change. The government modifies contracts when:

• Adding scope (additional requirements)
• Reducing scope (cutting deliverables)
• Extending the period of performance
• Adjusting prices or funding
• Exercising option years
• Making administrative changes (changing CO, changing address)

Types of Modifications

Bilateral modifications (BOA): Both parties sign. Required for: changes to scope, price, or period. Do not perform additional scope until a bilateral modification is signed.

Unilateral modifications (P00, A00, etc.): Only the CO signs. Used for: administrative changes, exercising options, issuing notices.

Critical protection: If the government directs you to perform work that appears to be within the contract scope but you believe is a constructive change (additional work), document your position in writing to the CO within the required notice period (usually 20–30 days per the Changes clause, FAR 52.243-1). Failing to give timely notice can waive your right to an equitable adjustment.

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Option Years: How They Work

Most multi-year contracts have option years that the government may exercise at its discretion. Options:

• Are NOT automatic — the government must affirmatively exercise each option
• Must be exercised before the current period of performance ends (a one-day gap can raise legal issues)
• Are exercised via unilateral modification by the CO
• May include a price adjustment mechanism (economic price adjustment clauses)

Your obligation: Keep your workforce and resources aligned to the contract scope during option evaluation periods. Some contractors make the mistake of reducing staff before the option decision, then cannot staff up in time if the option is exercised.

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Performance Monitoring and CPARS

During contract performance, the government monitors you via the COR's daily oversight. Formal performance assessment comes through CPARS — typically at contract completion and annually for multi-year contracts.

To maximize your CPARS rating:

• Meet every deliverable deadline
• Proactively communicate problems before they become crises
• Request feedback from the COR informally throughout performance
• Document your accomplishments — deliverables submitted ahead of schedule, cost savings, innovations
• When performance issues arise, address them immediately with a written corrective action plan

Full CPARS guide →

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Contract Closeout: Final Steps

When performance is complete, the contract must be formally closed out. Closeout steps:

1. Final deliverable accepted by government
2. Final invoice submitted and paid
3. All contractor property returned or disposed of
4. All subcontracts closed out
5. Final CPARS assessment completed
6. Excess funds de-obligated by the CO
7. Contractor certifies completeness of performance

Closeout can take months — even years for complex contracts. Stay engaged with the contracting office to ensure final payments are processed and CPARS assessments are accurate.

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Key Takeaways

• Never perform out-of-scope work without a bilateral modification — verbal directions have no legal weight.
• Submit proper invoices — missing even one required field triggers rejection and restarts the payment clock.
• Build a deliverables calendar on day one — missed deliverables become CPARS weaknesses.
• Maintain your contract file — everything, from day one, because you may need it three years after final payment.
• CPARS ratings are cumulative — proactive communication and exceeded performance metrics are your best protection against a bad rating.
• Option exercises are not automatic — plan staffing and resources for option evaluation periods without assuming the option will be exercised.

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