Understanding the Attachment E Cost Proposal Template

The AttachmentE Cost Proposal Template is a standard form used in many federal, state, and private contract solicitations to collect detailed pricing information from vendors. It allows the contracting officer and evaluation team to compare bids on a consistent basis and ensures that all cost elements are disclosed, justified, and compliant with applicable regulations.

Why the AttachmentE Is Important

Using a uniform template reduces the risk of misinterpretation and helps both the buyer and the seller:

• Transparency: All cost categories are visible and can be reviewed linebyline.
• Fair Competition: Vendors compete on the same basis, preventing pricehiding.
• Compliance: The template aligns with cost accounting standards (CAS) and other regulatory requirements.
• Auditability: Auditors can trace each cost element back to supporting documentation.

Structure of the Template

The typical AttachmentE consists of several sections. While formats may vary slightly by agency, the core components are:

Section	Description
1. Labor	Breakdown of direct labor hours, rates, and total labor cost.
2. Materials & Supplies	Itemized estimate of parts, consumables, and other tangible goods.
3. Equipment	Rental or usage fees for specialized tools, machinery, or software.
4. Subcontracts & Vendor Costs	Costs for work performed by thirdparty suppliers.
5. Indirect Rates	Overhead, G&A, and other indirect cost rates applied to direct costs.
6. Travel	Estimated travel expenses, including mileage, per diem, and lodging.
7. Other Direct Costs (ODC)	Training, testing, certification, and other projectspecific expenses.
8. Total Cost	Summation of all preceding sections, yielding the contracts proposed price.

Detailed Guidance for Each Section

1. Labor

Labor costs are usually the most scrutinized portion of a proposal. Follow these steps:

1. Identify each labor category (e.g., Project Manager, Engineer, Technician).
2. Specify the total hours expected for each category.
3. Provide the fullyburdened hourly rate, including fringe benefits.
4. Calculate the line total (Hours Rate) and include a brief justification for the effort.

Example:

Category	Hours	Rate ($/hr)	Total ($)
Project Manager	120	115.00	13,800
Systems Engineer	200	95.00	19,000
Technician	350	55.00	19,250

2. Materials & Supplies

Materials must be directly linked to project deliverables. Include part numbers, unit costs, quantity, and total cost. Avoid vague entries like miscellaneous supplies.

3. Equipment

If equipment is rented, list the daily or hourly rate, anticipated usage days, and total cost. For owned equipment, indicate depreciation or usage rates in accordance with your organizations cost accounting policy.

4. Subcontracts & Vendor Costs

Provide the name of each subcontractor, a description of the work, and the price. Attach a copy of each subcontractors cost proposal as a supporting document.

5. Indirect Rates

Most agencies require you to apply an approved overhead and G&A rate. State the source of your rates (e.g., audited CAS rate, negotiated provisional rate). Show the calculation:

Indirect Cost = (Direct Labor + Direct Materials + Direct Equipment)  Indirect Rate

6. Travel

Use the governmentpublished perdiem rates for lodging, meals, and incidental expenses. Include mileage reimbursement at the appropriate federal rate (currently $0.655 per mile as of FY2025). Provide a travel itinerary or a justification for each trip.

7. Other Direct Costs (ODC)

ODC items may include training fees, software licenses, testing services, and special certifications. Each ODC should be itemized and justified, showing its necessity to the performance of the contract.

8. Total Cost

Sum all sections, verify arithmetic, and present the final contract price. Many agencies require a Total FixedPrice line separate from Total CostReimbursement if the solicitation includes more than one contract type.

Best Practices for Completing AttachmentE

• Use consistent rounding. Round to the nearest dollar unless the solicitation specifies otherwise.
• Include supporting documentation. Attach labor rates, price quotes, and rate authorizations as appendices.
• Check compliance. Review the solicitations instructions for any mandatory disclosures (e.g., cost realism analysis, pricetoperformance ratios).
• Validate indirect rates. Ensure the rate applied matches the most recent audited rate or provisional rate approved by the contracting authority.
• Maintain traceability. Every cost line should be traceable to a source document or a calculation sheet.
• Proofread the totals. Small spreadsheet errors can cause bid rejections.

Common Mistakes to Avoid

1. Leaving fields blank. Even if a cost element is zero, enter 0.00 and provide a brief explanation.
2. Doublecounting costs. Ensure that indirect rates are applied only once and that subcontractor costs are not included both as direct labor and as subcontract expenses.
3. Using outdated rates. Verify that labor rates, perdiems, and mileage rates are current for the contract period.
4. Missing supporting quotes. Auditors will request original vendor quotes for any material or equipment cost.
5. Insufficient justification. Simply stating required for project may be rejected; elaborate on why the cost is necessary and reasonable.

Submitting the Completed Template

Follow the solicitations submission instructions precisely. Typically, the steps are:

1. Save the completed AttachmentE in the required format (PDF, Excel, or a fillable PDF).
2. Label the file clearly, e.g., CompanyX_AttachmentE_2026.pdf.
3. Upload the file through the designated procurement portal before the deadline.
4. Confirm receipt with the contracting officer and retain a copy for your records.

Resources and Reference Links

• Acquisition.gov Federal Acquisition Regulations (FAR)
• Defense Acquisition University Cost Estimating Guidance
• GSA PerDiem Rates
• Office of Management and Budget Circular A122 (Cost Accounting Standards)

Conclusion

The AttachmentE Cost Proposal Template is a critical tool for delivering transparent, compliant, and competitive pricing in government and largescale private contracts. By adhering to the structure outlined above, providing thorough justifications, and avoiding common pitfalls, vendors can enhance the credibility of their proposals and increase the likelihood of award. Investing the time to prepare a meticulous cost proposal pays dividends during the evaluation phase, during audits, and ultimately in fostering longterm contractual relationships.