Maryland Performance BondsLittle Miller Act Limits
State Finance and Procurement §17-103 requires a performance bond on Maryland public construction contracts exceeding $100,000. Most guides stop there. What they skip is §17-104: Maryland is one of the few states that spells out cash and real-property alternatives to a surety bond -- and once you run the numbers, the bond wins every time. If you also chase federal work in the DC metro, this page walks through which law -- Title 17 or the Miller Act -- governs each contract you bid.
Maryland's $100,000 Line: What Triggers a Bond and What Doesn't
State Finance and Procurement §17-103(a) is the operative rule: before a public body awards a construction contract that exceeds $100,000, the contractor must provide both payment security and performance security. The performance security amount is left to the awarding public body's judgment -- the statute says only that it must be an amount the public body “considers adequate for its protection.” The payment security has a statutory floor of at least 50% of the total contract amount.
That statutory floor is not what you'll actually see on a State of Maryland bid, though. COMAR 21.06.07.10 -- the regulation that implements Title 17 for State procurements -- sets both bonds at a flat 100% of the contract price for construction contracts over $100,000, delivered no later than the time the contract is executed. So while §17-103 technically only requires 50% payment security, every DGS, MDOT, and university solicitation you'll actually bid asks for 100%/100%.
Below $100,000, the State has no bonding requirement at all. But §17-103(b) gives public bodies other than the State -- counties, municipalities, bi-county agencies -- discretion to require security for contracts between $50,000 and $100,000, capped at 50% of the contract amount. A $75,000 county resurfacing contract might require a bond; a $75,000 state contract never will. Read the specific solicitation, not just the headline threshold.
$75K State Contract
$75K County Contract
$150K Any Public Body
Cash, a Mortgage, or a Bond: What §17-104 Actually Lets You Post
Most state Little Miller Acts only mention a surety bond. Maryland is more explicit: §17-104 spells out three acceptable forms of security, including using your own real property as collateral. Almost no contractor takes Maryland up on the alternatives once they see the numbers side by side.
Maryland Construction Contract Security Options Under §17-104
What each option actually costs a contractor bidding a $500,000 public contract
| Security Type | Capital Tied Up | Approx. Cost | Renews for Next Job? | Statute |
|---|---|---|---|---|
| Surety Bond | None -- premium only | ~1-3% of contract value/year | Yes -- capacity extends to your next bid | §17-104(a)(1) |
| Cash Deposit | Full bond amount in cash | Lost opportunity cost on locked cash | No -- cash sits until the project closes out | §17-104(a)(2) |
| Mortgage/Deed of Trust on MD Real Property | Up to 75% of your equity in the property | Recording fees + title/appraisal work | No -- recorded per project in county land records | §17-104(b) |
| Other Security (public-body-approved) | Varies -- negotiated case by case | Varies, often requires legal review | No standard renewal path | §17-104(a)(3) |
A mortgage or deed of trust must be recorded in the land records of the county where the real property is located, and the face amount cannot exceed 75% of the contractor's equity interest.
Md. Code, State Fin. & Proc. §17-104
On a $500,000 contract, cash security means parking $500,000 that can't bid your next job. A surety bond does the same job for a few thousand dollars in annual premium, and your bonding capacity refreshes as each project closes out. The mortgage option exists for contractors without bondable financials, but recording a lien against your own property to win a public contract is a last resort, not a strategy.
Who You're Bonding To: State Agencies, MDOT, and the DMV Counties
“Maryland requires a bond over $100,000” is true for the State -- but the obligee on your contract changes who filed the requirement and where you file the bond.
Maryland Public-Body Bonding by Obligee
Same $100,000 baseline, different filing paths
| Obligee | Governing Rule | Threshold | Bond Amount | Filed With |
|---|---|---|---|---|
| State agencies (DGS, universities) | Title 17 + COMAR 21.06.07.10 | > $100,000 | 100% performance + 100% payment | Comptroller of Maryland |
| MDOT / State Highway Administration | Title 17 + COMAR (MDOT is a state unit) | > $100,000 | 100% performance + 100% payment | MDOT contracting office |
| M-NCPPC (Montgomery & Prince George's) | Bi-county agency, state model adopted | > $100,000 (discretionary below) | 100% performance + 100% payment | M-NCPPC Contract Administration |
| Counties & municipalities generally | §17-103(b) -- optional $50K-$100K | Mandatory > $100,000; optional $50K-$100K | Up to 50% if invoked below $100K; 100% typical above | Awarding county or municipal office |
| Private owner or developer | Contract terms only -- no state mandate | Not statutory | Set by the contract | Per contract terms |
Always confirm the exact bond amount and filing office in the specific solicitation's General Conditions -- individual public bodies can and do require more than the statutory floor.
Md. Code, State Fin. & Proc. Title 17, Subtitle 1; COMAR 21.06.07.10
Federal Job or State Job? Why the DC-Metro Answer Isn't Obvious
A contractor working the Baltimore-Washington corridor can have a Title 17 state job, a federal Miller Act job, and a WMATA job all running at the same time -- on sites that are sometimes blocks apart. The law that governs is set by who signs as the obligee, not where the dirt is.
Maryland Title 17 vs. Federal Miller Act
Side-by-side comparison for contractors bidding both
| Requirement | Maryland (Title 17) | Federal (Miller Act, 40 U.S.C. §3131) |
|---|---|---|
| Performance bond threshold | > $100,000 (mandatory) | > $150,000 (FAR 28.102-1 operative figure) |
| Payment security amount | ≥50% statutory floor; 100% under COMAR for State work | 100% of contract price, never less than the performance bond |
| Acceptable security types | Surety bond, cash, MD real-property mortgage/deed of trust, or other approved security | Surety bond (Treasury Circular 570-listed) or FAR 28.204 alternative payment protections |
| Approval authority | Attorney General (state) or public body counsel (other) | Contracting officer |
| Filed with | Comptroller of Maryland or the awarding public body | Contracting agency |
A project physically located in Maryland does not make it a Title 17 contract -- a federally funded contract with a federal agency as obligee follows the Miller Act instead.
Md. Code, State Fin. & Proc. §§17-103 to 17-105; 40 U.S.C. §3131; FAR 28.102-1
Quick Read on Who Governs Your DMV-Area Contract
Working federal contracts too? Our Miller Act bond requirements guide and federal government-contract performance bonds page cover the FAR 28.102 thresholds and Circular 570 surety list in detail.
Building Bonding Capacity Across the District Line
A contractor running both Title 17 state work and Miller Act federal work doesn't get two separate bonding lines -- your surety underwrites one aggregate capacity across every open bond, state and federal alike. That capacity comes from a single-job limit (the largest contract your surety will bond at once) and an aggregate limit (total bonded backlog across every project you're carrying). Both are driven primarily by working capital, net worth, and multi-year financial trends -- not just credit score.
Because Maryland's $100,000 threshold sits well below the federal $150,000 line, DMV-area contractors often hit their first bonding requirement on a state or county job before they ever bid federal work. That first Title 17 bond -- and how cleanly you close it out -- becomes part of the track record a surety reviews when you later chase a larger GSA or NAVFAC contract. Contractors bidding both sides of the district line benefit from keeping financials on a fiscal-year cadence a surety can review quickly across every obligee: DGS, MDOT, Montgomery County, and federal agencies alike.
For a full walkthrough of the underwriting factors -- financial statements, experience, largest completed project -- see our guide to getting bonded and bond cost breakdown. If you also hold a Maryland trade license, the standing license bond and your project performance bonds are underwritten separately -- see Maryland contractor license bond requirements for that side of your bonding program.
Official Maryland Requirements
"Before a public body may award a construction contract that exceeds $100,000, the contractor shall furnish to the public body: (1) performance security in an amount that the public body considers adequate for its protection; and (2) payment security in an amount that is at least 50% of the total amount payable under the contract."Maryland General Assembly • Md. Code, State Fin. & Proc. §17-103(a)
Maryland Performance Bond Questions From DMV-Area Contractors
Answers grounded in State Finance and Procurement Title 17, COMAR 21.06.07.10, and 40 U.S.C. §3131
Does a $90,000 Maryland public contract need a performance bond?
No -- not automatically. Under State Finance and Procurement §17-103(a), a performance bond is only mandatory once the construction contract exceeds $100,000. A $90,000 contract falls below that line. But §17-103(b) gives public bodies other than the State itself the discretion to require security on contracts between $50,000 and $100,000, capped at 50% of the contract amount. Whether your $90,000 county or municipal contract needs a bond depends on that awarding body's own policy -- check the solicitation's General Conditions, not just the statute.
Can I post cash or a mortgage instead of a bond on a Maryland public job?
Yes. State Finance and Procurement §17-104 recognizes three forms of security: a surety bond from a company authorized to do business in Maryland, cash in an amount equivalent to the bond, or "other security satisfactory to the public body awarding the contract" -- which can include a mortgage or deed of trust on Maryland real property, capped at 75% of your equity interest and recorded in the county land records. In practice almost no contractor chooses cash or a mortgage: both lock up capital you could otherwise use to bid the next job, while a bond only costs a premium. See the cost comparison below for the real numbers.
My contract is with MDOT, not a county -- does the threshold change?
No. The Maryland Department of Transportation is a unit of state government, so MDOT construction contracts follow the same framework as any other state agency: Title 17's statutory floor plus COMAR 21.06.07.10, which sets performance and payment bonds at 100% of the contract price for construction contracts over $100,000, delivered no later than contract execution. MDOT State Highway Administration incorporates this into its own Standard Specifications for Construction and Materials, so the bonding clause you see in an SHA bid package traces back to the same statute covered on this page.
I bid Montgomery County and Prince George's County work and also chase federal GSA contracts in DC -- which law applies to each?
It depends on who signs as the obligee, not where the jobsite sits. A Maryland state agency, MDOT, or a Maryland county contract is governed by Title 17's Little Miller Act. The Maryland-National Capital Park and Planning Commission (which serves both Montgomery and Prince George's counties) follows the same $100,000 / 100%-of-contract model in its own bid documents. A federal contract -- GSA, NAVFAC Washington, VA, NIH -- is governed by the Miller Act (40 U.S.C. §3131) regardless of whether the jobsite is in Maryland, DC, or Virginia. A WMATA contract is a separate case: WMATA operates under its own interstate compact and procurement manual, so its bonding clause should be confirmed directly in the solicitation rather than assumed from either statute.
Is Maryland's payment security also 100% of the contract, like the performance bond?
The statute itself sets a lower floor: §17-103(a) requires payment security of "at least 50%" of the total contract amount. But the regulation that implements Title 17 for State procurements, COMAR 21.06.07.10, sets both the performance bond and the payment bond at 100% of the contract price for construction contracts over $100,000. In practice, almost every state and MDOT solicitation you'll bid uses the 100%/100% COMAR standard -- the 50% figure mostly matters for local public bodies drafting their own bonding policy under the statutory floor.
Who approves the bond form and where do I file it in Maryland?
Under §17-105, the security must be made payable to "the State of Maryland" for state contracts, or to the specific public body for other contracts. The form of the security has to be approved by the Attorney General for state contracts, or by that public body's own legal counsel otherwise. Once approved, the contractor files the bond (or the trust account evidence, for cash security) with the Comptroller's Office for state contracts, or with the appropriate office of the other public body. Your surety agent typically handles the paperwork, but knowing who signs off explains why bond approval can take longer on a first-time state filing.
New to construction bonding? Our learning center covers how surety bonds work, our performance bond calculator estimates your premium, and performance bond requirements by state shows how Maryland compares nationally. Need both bonds on the same project? See performance and payment bonds or run the payment bond calculator.
Estimate Your Maryland Performance Bond Premium
Free calculator — ballpark cost in under 60 seconds, no email required.
Other Maryland Bonds
Additional surety bonds available in Maryland
Nearby States
Performance bonds in neighboring states
Washington DC requirements, statute, and bond amount
Delaware requirements, statute, and bond amount
Pennsylvania requirements, statute, and bond amount
Virginia requirements, statute, and bond amount
West Virginia requirements, statute, and bond amount

All content is researched from official state and federal sources (.gov) and verified before publication. BuySuretyBonds.com works with Treasury-certified, A-minimum rated surety carriers serving all 50 states.
Skip the Cash Deposit -- Bond It Instead
Whether your obligee is DGS, MDOT, a DMV-area county, or a federal agency, your bonding capacity shouldn't be the thing that slows down your bid. Get approved before the solicitation deadline.