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Construction Bid Security Deposits: Types, Requirements, and Best Practices

December 24, 2025
10 min read
CBConstructionBids.ai Team
Construction Bid Security Deposits: Types, Requirements, and Best Practices

Bid security is a standard requirement for most public construction projects, guaranteeing that contractors will honor their bids if selected. Understanding bid security options, requirements, and implications helps contractors navigate procurement requirements effectively.

This guide covers bid security types, costs, and best practices for managing bid security obligations.

What Is Bid Security?

Bid security is a guarantee submitted with a bid, assuring the owner that the contractor will enter into a contract at the bid price if selected as the successful bidder.

Purpose of Bid Security

Bid security serves several functions:

Owner Protection

  • Ensures serious bidders only
  • Protects against bid withdrawal
  • Compensates if bidder defaults
  • Provides financial remedy

Market Integrity

  • Discourages frivolous bids
  • Promotes responsible bidding
  • Ensures commitment to pricing
  • Maintains fair competition

When Bid Security Is Required

Bid security is typically required for:

  • Federal construction contracts
  • State and local public works
  • Some private construction projects
  • Projects requiring performance and payment bonds

Types of Bid Security

Several forms of bid security are accepted.

Bid Bonds

The most common form of bid security.

How They Work

  • Surety company guarantees contractor's bid
  • Surety pays if contractor defaults
  • Typically 5% or 10% of bid amount
  • Part of ongoing bonding relationship

Advantages

  • Usually no out-of-pocket cost
  • Part of surety bonding program
  • No cash tied up
  • Professional relationship established

Considerations

  • Requires established surety relationship
  • Counts against bonding capacity
  • May require pre-approval for large bids

Cashier's Checks

Cash equivalent from a bank.

How They Work

  • Bank issues check guaranteed by bank funds
  • Submitted with bid
  • Returned to unsuccessful bidders
  • Deposited if forfeiture occurs

Advantages

  • Available without bonding relationship
  • Immediate availability
  • Universally accepted

Considerations

  • Ties up working capital
  • Must obtain before deadline
  • May earn no interest while held
  • Return delay after award

Certified Checks

Personal or business check guaranteed by bank.

How They Work

  • Bank certifies funds are available
  • Funds held by bank
  • Functions like cashier's check
  • Returned or deposited per results

Advantages

  • Available from your bank account
  • Immediate availability
  • Generally accepted

Considerations

  • Same working capital impact as cashier's check
  • Bank may charge fees
  • Return process after award

Letters of Credit

Bank commitment to pay on demand.

How They Work

  • Bank issues letter committing to pay
  • Owner can draw funds if conditions met
  • Standby arrangement
  • May or may not tie up funds

Advantages

  • May preserve some liquidity
  • Banks familiar with process
  • Flexible structure options

Considerations

  • Bank fees and costs
  • May require collateral
  • Less common for bid security
  • Some owners may not accept

Cash Deposits

Direct cash payment to owner.

How They Work

  • Contractor deposits cash with owner
  • Held during evaluation period
  • Returned after award
  • Forfeited if contractor defaults

Advantages

  • Simple and direct
  • Always acceptable

Considerations

  • Maximum working capital impact
  • No return during evaluation
  • Less professional appearance

Bid Security Amounts

Standard requirements for bid security amounts.

Common Requirements

| Requirement | Amount | |-------------|--------| | Federal (typical) | 20% of bid or $3M, whichever less | | State (typical) | 5-10% of bid | | Local (typical) | 5-10% of bid | | Private (when required) | 5-10% of bid |

Fixed vs. Percentage

Owners specify requirements as:

Percentage of Bid

  • Most common approach
  • Scales with project size
  • 5% or 10% typical

Fixed Amount

  • Some projects specify fixed amount
  • May cap maximum required
  • Simplifies for certain projects

Bid Security Forfeiture

Understanding when bid security may be lost.

Forfeiture Conditions

Bid security may be forfeited when:

Refusal to Execute Contract

  • Selected bidder won't sign contract
  • Fails to provide required documents
  • Doesn't execute within time specified

Failure to Provide Bonds

  • Cannot obtain performance bond
  • Cannot obtain payment bond
  • Bonds not provided timely

Withdrawal After Opening

  • Withdrawing during validity period
  • Not honoring bid price
  • Refusing to proceed after selection

Forfeiture Amount

What owners can collect:

Bid Bond Forfeiture

  • Typically difference between defaulting bid and next acceptable bid
  • Limited to bond amount
  • Surety pays the claim

Cash Security Forfeiture

  • Full amount deposited
  • Or actual damages, whichever specified
  • Immediate availability to owner

Avoiding Forfeiture

Protect your bid security:

Bid Carefully

  • Accurate estimating
  • Thorough scope review
  • Appropriate contingencies

Maintain Bonding

  • Keep capacity available
  • Communicate with surety
  • Address issues proactively

Honor Commitments

  • Plan to execute if selected
  • Prepare for contract signing
  • Have bonds ready to issue

Bid Security Best Practices

Manage bid security effectively.

For Bid Bonds

Maintain Surety Relationship

  • Keep financials current
  • Communicate proactively
  • Build bonding capacity
  • Request bid bonds early

Request Process

  • Contact bond producer before deadline
  • Provide project information
  • Allow adequate processing time
  • Confirm bid bond received

For Cash Security

Cash Management

  • Plan for cash tie-up
  • Consider cost of capital
  • Track outstanding deposits
  • Follow up on returns

Documentation

  • Keep copies of all deposits
  • Document delivery
  • Track return timing
  • Verify refunds received

General Practices

Pre-Bid Planning

  • Identify security requirements early
  • Determine best security type
  • Arrange before deadline
  • Allow margin for issues

Submission

  • Verify security meets requirements
  • Include with bid properly
  • Keep copies
  • Confirm receipt

Post-Bid

  • Track security status
  • Follow up on returns
  • Document for accounting
  • Maintain records

Special Situations

Handle unique circumstances appropriately.

Multiple Bids Outstanding

Managing multiple bid securities:

  • Track all outstanding securities
  • Monitor capacity impact
  • Plan cash requirements
  • Coordinate with surety

Errors in Bids

When you discover bid errors:

  • Notify owner immediately
  • Document the error
  • Request withdrawal if appropriate
  • Understand forfeiture implications

Bid Security Substitution

Some owners may allow:

  • Bid bond in lieu of cash after award
  • Security substitution during evaluation
  • Check specific solicitation terms
  • Don't assume substitution available

Frequently Asked Questions

Can I withdraw my bid and keep my bid security?

Generally, no. Withdrawal during the validity period typically triggers forfeiture. Some jurisdictions allow withdrawal for clerical errors if properly documented and requested promptly.

How long is my bid security held?

Until contract execution or rejection of your bid. For winning bidders, bid security is released when performance and payment bonds are in place. For others, release occurs after award to another bidder.

What if I can't get a performance bond after winning?

This typically triggers bid security forfeiture. The owner can claim the difference between your bid and the next acceptable bid, up to the security amount.

Do bid bonds cost money?

Bid bonds are typically provided free or at minimal cost as part of your surety bonding program. The surety's compensation comes from premiums on performance and payment bonds if awarded.

Can I use one bid bond for multiple bids?

No. Each bid requires its own bid bond for the specific project. Bid bonds are project-specific documents.

Conclusion

Bid security is a standard requirement that demonstrates serious commitment to your bid. Understanding the options, costs, and implications helps contractors navigate requirements while protecting their interests.

Maintain strong surety relationships for bond-based security, manage working capital for cash alternatives, and always understand the forfeiture conditions for any bid you submit.

Ready to find more bidding opportunities? Try ConstructionBids.ai free to discover projects and start building your pipeline today.

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