Your project just got bigger. The scope expanded. Material costs skyrocketed. Now your original bond amount is no longer enough to cover the contract. You need a surety bond increase—and fast. But how does it work? Who do you notify? And will your surety approve it? This guide covers everything you need to know about surety bond increases, from federal regulations to state requirements to practical steps for contractors.
The Simple Definition
A surety bond increase is a formal process that raises the penal sum (maximum liability) of an existing surety bond to match an increased contract amount or expanded scope of work . Bond increases are most common in construction, where change orders, material inflation, and project expansions require higher bonding capacity.
Bond increases can be triggered by:
- Contract change orders increasing the project value
- Rising material costs requiring higher bond amounts
- Expanded project scope beyond original specifications
- Regulatory or statutory requirements for higher coverage
- Annual volume increases in license bond requirements
When Do You Need a Surety Bond Increase?
Construction Contract Increases
When a construction contract increases in value, the associated performance and payment bonds must typically increase as well . Under the Miller Act and most Little Miller Acts, penal sums must generally be 100% of the original contract price plus 100% of any price increases .
Common triggers for construction bond increases include:
| Trigger | Description |
|---|---|
| Change orders | Owner-directed changes adding work or materials |
| Material inflation | Rising steel, concrete, or lumber costs |
| Scope expansion | Additional phases or features added to project |
| Extended timeline | Longer project duration requiring extended bond coverage |
SBA-Guaranteed Bond Increases
Under 13 CFR 115.32, the Small Business Administration has specific rules for bond increases :
- Notification threshold: The surety must notify SBA of any increases or decreases that aggregate 25% or $500,000 of the original contract or bond amount, whichever is less
- Prior approval required: When a single change order increases the original bond amount by at least 25% or $500,000 (whichever is less), prior written approval from SBA is required on a supplemental Prior Approval Agreement
- Notification method: Use SBA Form 990 and select the application type used for the original bond guarantee
- Fee payment: The principal’s guarantee fee increase is due upon notification. If the increase is less than $250, no payment is due until the total of increases equals or exceeds $250
License Bond Increases
Some states require license bonds to increase based on business volume . For example, North Carolina mortgage lenders and brokers must increase their surety bonds based on residential mortgage loan origination and servicing volume :
| Annual Volume | Mortgage Broker/Lender Bond | Mortgage Servicer Bond |
|---|---|---|
| With application | $75,000 | $150,000 |
| Between $10M and $49,999,999.99 | $125,000 | $250,000 |
| $50,000,000 or more | $250,000 | $500,000 |
Filing deadline: Any increased bond required by volume must be filed with the Commissioner on or before May 31 immediately following the end of the December 31 measurement period .
Florida Department of Transportation Bonds
Under Florida Statute 337.18, the Florida Department of Transportation may allow alternative bonding arrangements for large contracts :
- For contracts of $250 million or more, the department may waive the 100% bond requirement and set a bond amount that is a portion of the total contract price
- Alternative security may include letters of credit, U.S. bonds and notes, parent company guarantees, or cash collateral
How Material Inflation Triggers Bond Increases
According to industry experts, rising material costs in 2026 are directly affecting surety bond requirements . Here is how inflation impacts different bond types:
Bid Bonds
- Sureties scrutinize bid accuracy more aggressively
- Unrealistically low bids raise red flags
- Bid spreads are widening
- More documentation is required (updated quotes, supplier pricing verification)
Performance Bonds
- Job cost accuracy is critical to underwriting
- Working capital requirements are increasing
- Supplier reliability matters more
- Inflation creates mid-project stress and cash strain
Bonding Capacity
- Each project requires more working capital
- A $10M backlog from 2020 may now cost $13M–$15M to complete
- Thin margins (3-5%) become extremely risky
- Larger bank lines are expected by underwriters
How to Request a Surety Bond Increase
The process follows several steps. Specialists like Swiftbonds can help contractors navigate bond increases with A.M. Best A-rated sureties. Here is how it works:
- Notify Your Surety Early: Contact your surety agent as soon as you know a bond increase is needed. Proactive communication prevents surprises and capacity restrictions .
- Provide Updated Documentation: Submit the change order or amended contract showing the new contract value, updated cost estimates, revised timeline, and any supplier quotes reflecting current material prices .
- Complete Supplemental Application: For SBA-guaranteed bonds, use SBA Form 990 . For standard bonds, complete the surety’s supplemental bond form.
- Pay Increased Premium: The additional premium is typically calculated as the same percentage rate applied to the increased bond amount. For SBA bonds, the principal’s guarantee fee increase is due upon notification .
- Receive and File Increased Bond: The surety issues an amended bond or bond rider showing the new penal sum. File it with the project owner or obligee.
Bond Decreases: When Bond Amounts Go Down
Bond amounts can also decrease in certain circumstances:
Contract Decreases
Under 13 CFR 115.32(d)(3), when SBA is notified of a decrease in contract or bond amount :
- SBA will refund to the principal a proportionate amount of the principal’s guarantee fee
- SBA will rebate to the surety a proportionate amount of SBA’s premium share
- If the refund amount is less than $250, no refund is made until the total of refunds aggregates at least $250
License Bond Decreases
Under Arizona Administrative Code R4-9-112, a surety bond or cash deposit cannot be decreased except at license renewal for the ensuing fiscal year . Contractors may only request lower bond amounts when their estimated annual volume has decreased.
State-Specific Bond Increase Requirements
Texas Notary Bonds
Under Texas notary rules, notaries can update their surety bond through the online portal :
- Log into the Notary Self Service portal
- Select “Manage Commission”
- Choose “Update Surety Bond”
- Upload a completed Form 2301B with signature from an authorized surety representative
- Enter agency name, address, and bond date
North Carolina Mortgage Bonds
Mortgage lenders and brokers must file increased bonds by May 31 following the December 31 measurement period . The bond amount is based on the prior 12 months’ origination and servicing volume .
Arizona Contractor Bonds
Contractors may increase bond amounts at any time, but decreases are only permitted at license renewal . A gross underestimate of volume knowingly made is a material misrepresentation that can subject the licensee to suspension or revocation .
How Bond Increases Affect Your Premium
The premium for a bond increase is typically proportional to the increased bond amount .
| Original Bond | Increase | New Bond | Premium Impact |
|---|---|---|---|
| $100,000 | $50,000 | $150,000 | +50% premium |
| $500,000 | $100,000 | $600,000 | +20% premium |
| $1,000,000 | $250,000 | $1,250,000 | +25% premium |
SBA bond fees: For SBA-guaranteed bonds, the principal’s guarantee fee increase is computed on the increase in contract amount . If the increase in the principal’s fee is less than $250, no payment is due until the total amount of increases equals or exceeds $250 .
How to Get a Surety Bond Increase
The process follows four simple steps, and specialists like Swiftbonds can help contractors secure bond increases quickly, working with A.M. Best A-rated sureties. Here is how it works:
- Apply: Contact your surety agent with the change order or amended contract details. Provide updated cost estimates and any supporting documentation.
- Quote: The surety evaluates the increased risk and returns a premium quote for the additional bond amount.
- Pay: You pay the additional premium via credit card, ACH, or wire transfer.
- File: The surety issues an amended bond or bond rider, and you file it with the project owner or obligee.
Swiftbonds LLC
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Frequently Asked Questions
Q: When do I need to increase my surety bond?
You need to increase your bond when the underlying contract increases in value (via change order or scope expansion), when material costs rise significantly, or when your business volume exceeds the threshold for your current license bond amount.
Q: How much notice does my surety need for a bond increase?
Notify your surety as soon as you know an increase is needed. For SBA bonds, notification is required when changes aggregate 25% or $500,000 of the original amount .
Q: Will my surety automatically increase my bond when material costs rise?
No. You must proactively request a bond increase. However, sureties may require increased bonds when they determine that original estimates are no longer accurate .
Q: Can a bond increase be denied?
Yes. If your financial condition has deteriorated or the increased risk is beyond your capacity, a surety may deny a bond increase request.
Q: What happens if I don’t increase my bond when required?
You may be in breach of your contract. The project owner may be able to file a claim against your existing bond for the shortfall, and you could face license suspension or revocation .
Q: How long does a bond increase take?
Standard bond increases can be processed in 1-3 business days. SBA-guaranteed bond increases require prior written approval, which may take longer .
Q: Can I decrease my bond amount after a project is complete?
For project-specific bonds, the bond terminates upon project completion. For license bonds, decreases are typically only allowed at license renewal .
5 Interesting Things About Surety Bond Increases Not in the Top 10 Sites
- The 25% threshold in SBA regulations creates a strategic opportunity.Contractors can aggregate multiple small change orders totaling less than 25% without triggering the prior approval requirement. This allows faster processing for incremental project expansions .
- Florida allows $250 million contracts to have reduced bond percentages.Under Florida Statute 337.18, for contracts of $250 million or more, the Department of Transportation may waive the 100% bond requirement and set a bond amount that is a portion of the total contract price—a rare exception to the standard 100% rule .
- SBA’s $250 de minimis rule for fee increases reduces administrative burden.Under 13 CFR 115.32, if an increase in the principal’s guarantee fee is less than $250, no payment is due until the total amount of increases equals or exceeds $250. This prevents small change orders from triggering fee processing .
- The 30-day notice period for bond cancellation creates a window for replacement. Most continuous bonds require the surety to provide 30 days’ notice before cancellation. This gives contractors time to secure a replacement bond before their license is suspended .
- Inflation is currently the largest driver of bond increases since the 1970s.According to industry experts, the current inflationary cycle (2022-2026) has led to more bond increase requests than any period since the 1970s, with material costs rising 15-25% on many projects .
Conclusion
Surety bond increases are required when contract values rise due to change orders, material inflation, or expanded project scope. Under federal regulations, SBA-guaranteed bonds require notification and prior approval for increases of 25% or $500,000 . State-specific rules apply to license bonds, with North Carolina requiring increased bonds based on annual volume and Arizona allowing increases at any time but decreases only at renewal .
Material inflation in 2026 is driving more bond increase requests, as sureties scrutinize bid accuracy, working capital, and supplier reliability . Contractors should communicate proactively with their surety, provide updated documentation, and request bond increases as soon as they are needed.
Before starting any project with potential for expansion, discuss bond increase procedures with your surety agent. A clear understanding of the process prevents delays when change orders arrive.