18 Mistakes Vendors Make When Dealing with Contracting Officers

Your proposal might be strong.

Your pricing might be competitive.

Your company might even be capable of delivering the work.

And yet many vendors still lose opportunities before their proposal is even fully considered.

One reason? How they deal with contracting officers.

Understanding the Contracting Officer's Role

Contracting officers operate within a very structured system. Their job is not to "help vendors win contracts."

Their responsibility is to:

• Follow federal acquisition regulations
• Ensure fair competition
• Protect the government's interests
• Award contracts to capable, compliant vendors

But many vendors don't understand this. They approach contracting officers like they would approach a private-sector buyer — sending vague emails, ignoring instructions, and expecting special treatment.

None of these things help. In fact, they can hurt your credibility as a vendor.

The vendors who build better relationships with contracting officers usually do something different: they understand the process, communicate clearly, and respect the structure of government procurement.

18 Mistakes That Cost Vendors Contracts

Here are the most common mistakes vendors make when dealing with contracting officers — and how to avoid them.

1. Ignoring Instructions

Failing to follow solicitation instructions can quickly eliminate your proposal. The RFP tells you exactly what to submit, in what format, by what deadline. Contracting officers don't have discretion to overlook missing requirements — they're required to evaluate what you submitted against what was requested.

Fix: Read the entire solicitation. Create a compliance checklist. Have someone else verify you addressed every requirement before submitting.

2. Vague Emails

Unclear messages make it difficult for contracting officers to understand your request. When you send an email that says "I'd like to discuss opportunities," you're asking them to do your work for you.

Fix: Be specific. Reference solicitation numbers. State exactly what you need. Make it easy for them to respond with a yes or no.

3. Missing Documents

Leaving out required documents can disqualify your submission immediately. This includes certifications, representations, past performance questionnaires, and required attachments.

Fix: Use the solicitation's document checklist. Many RFPs include a list of required attachments — use it as your submission checklist.

4. Late Responses

Responding after deadlines shows poor attention to the procurement timeline. In government contracting, late is late — there's no grace period, no "close enough."

Fix: Submit at least 24 hours early. Technical issues happen. Give yourself a buffer.

5. Poor Preparation

Contacting contracting officers without understanding the opportunity wastes valuable time — theirs and yours. They can tell when you haven't read the solicitation or done basic research.

Fix: Before reaching out, know the solicitation number, scope of work, deadline, and your specific question. Learn how to communicate effectively with contracting officers.

6. Giving Up Early

Many vendors stop after a few losses instead of learning and improving. Government contracting has a learning curve. Your first few proposals probably won't win — that's normal.

Fix: Request debriefs after losses. Analyze what went wrong. Each loss should make your next proposal stronger.

7. Weak Research

Not researching the agency or requirement can lead to irrelevant communication. If you don't understand what the agency actually needs, your proposal won't resonate.

Fix: Research the agency's mission, past purchases, and current priorities before you bid. Learn how to research government opportunities.

8. Ignoring Rules

Government procurement follows strict regulations that vendors must respect. The FAR (Federal Acquisition Regulation) governs everything. "That's not how we do it in the private sector" doesn't matter.

Fix: Learn the basics of the FAR. Understand why rules exist. Work within the system, not against it.

9. Repeated Questions

Asking questions already answered in the solicitation shows lack of preparation. Every question you ask that's already in the RFP signals that you didn't read it carefully.

Fix: Search the entire solicitation before asking questions. Use Ctrl+F. Check the Q&A responses from other vendors.

10. Rushed Proposals

Quick submissions often miss details that evaluators expect to see. A proposal that looks rushed probably is rushed — and evaluators can tell.

Fix: Start early. Build in time for internal review. Have someone outside the proposal team read it for clarity.

11. Unclear Capabilities

If your capabilities are not clear, evaluators cannot assess your value. Vague statements like "we provide excellent service" don't help. Be specific about what you do and how you do it.

Fix: Quantify your capabilities. Use specific examples. Show past performance that demonstrates exactly what you claim you can do.

12. Unrealistic Pricing

Prices that appear too low or too high can raise concerns during evaluation. Too low suggests you don't understand the scope or will cut corners. Too high suggests you're not competitive.

Fix: Research comparable contract awards. Build your price from a realistic cost basis. Be prepared to explain your pricing rationale.

13. Poor Formatting

Ignoring formatting or structure requirements can make proposals harder to review. Evaluators read dozens of proposals. If yours doesn't follow the required format, they may miss key information.

Fix: Follow the RFP's formatting instructions exactly. Page limits, font sizes, section headers — all of it matters.

14. Missing Deadlines

Even small timing mistakes can disqualify an otherwise strong proposal. This includes not just the final submission deadline, but Q&A deadlines, intent to bid notices, and amendment acknowledgments.

Fix: Track every deadline in the solicitation. Set reminders. Build in buffer time.

15. Ignoring Feedback

When feedback is available, use it to improve future proposals. Debriefs are free consulting. Contracting officers tell you exactly why you lost — and many vendors never request them.

Fix: Always request a debrief after a loss. Take notes. Incorporate feedback into your next proposal.

16. Unprofessional Communication

Professional communication helps maintain credibility with contracting officers. This includes proper grammar, appropriate tone, and respecting their time.

Fix: Proofread every email. Keep messages concise. Be professional but not stiff.

17. Incomplete Compliance

Missing compliance details can prevent proposals from moving forward. This includes SAM.gov registration, required certifications, insurance requirements, and security clearances.

Fix: Verify your compliance status before you bid. Don't assume you're compliant — check. Ensure your SAM.gov registration is current.

18. Over-Selling

Contracting officers evaluate compliance and value, not sales pitches. They're not impressed by marketing language or aggressive follow-ups. They want to know: can you do the work, and are you compliant?

Fix: Focus on demonstrating capability, not selling. Let your past performance and technical approach speak for themselves.

The Pattern Behind These Mistakes

Notice what all 18 mistakes have in common:

• They treat government contracting like private-sector sales
• They don't respect the process
• They create more work for the contracting officer
• They show lack of preparation

The vendors who win consistently do the opposite. They understand the system, prepare thoroughly, and make the contracting officer's job easier.

What Sets Winning Vendors Apart

Winning vendors:

1. Read the entire solicitation — multiple times
2. Follow instructions exactly — no exceptions
3. Submit early — never on the deadline
4. Communicate clearly — specific questions, professional tone
5. Learn from losses — request debriefs, improve continuously
6. Respect the process — work within the system

Government contracting isn't about relationships or sales skills. It's about compliance, capability, and clear communication.

Avoid these 18 mistakes, and you'll already be ahead of most of your competition.