Introduction
The United States is the largest public procurement market in the world. Federal agencies alone award over $755 billion in contracts annually. Add state, county, municipal, school district, and special authority spending, and the total exceeds $2 trillion per year.
That scale comes with fragmentation. The federal government centralizes procurement on SAM.gov. Below that level, roughly 90,000 government entities each choose their own procurement platform. There is no national portal that aggregates everything.
For suppliers, this creates a familiar problem. You monitor three portals. You should monitor fifteen. Opportunities close before you knew they existed. This guide covers exactly where to look, how to register, and what separates effective monitoring from wasted effort.
The US Procurement Landscape
US government procurement operates on three distinct tiers. Each tier has different rules, different platforms, and different buying patterns.
Federal
Around 100 federal agencies procure through processes governed by the Federal Acquisition Regulation (FAR). SAM.gov is the mandatory publication point for opportunities above $25,000. The Department of Defense accounts for roughly 60% of federal contract spending. Other large procurers include the Department of Energy, Department of Health and Human Services, General Services Administration (GSA), and NASA.
Federal procurement is well-structured. Solicitations follow standardized formats. Evaluation criteria are published. Award decisions are documented and, in many cases, debriefed.
State
All 50 states maintain their own procurement systems. Annual state procurement spending is estimated at $500-700 billion, though precise figures are difficult to pin down because reporting standards vary. California, New York, Texas, and Florida are the largest state markets by volume.
States use different e-procurement platforms. Some run proprietary systems. Others use commercial vendors like Jaggaer, BuySpeed, CGI Advantage, or Periscope S2G. A contract from Washington state appears on WEBS. A contract from Pennsylvania appears on PA eMarketplace. A contract from Texas appears on the ESBD. There is no cross-state aggregation.
Local
Counties, cities, school districts, transit authorities, port authorities, housing authorities, and water districts represent the longest tail. Roughly 19,500 municipalities, 13,000 school districts, and 50,000 special districts each make their own purchasing decisions. Collectively, local government procurement exceeds $500 billion annually.
Local procurement platforms cluster around a handful of vendors. PlanetBids, BuySpeed, Bonfire, DemandStar, OpenGov, and PublicPurchase each serve hundreds to thousands of agencies. If you build relationships with the platform vendors, you cover large swaths of local procurement through a single interface. But no single vendor covers everything.
Key Portals and Databases
SAM.gov (Federal)
SAM.gov is the starting point for federal procurement. It consolidates what used to be separate systems — FedBizOpps, FPDS, DSBS, and the legacy CCR — into one platform. SAM.gov serves two functions: entity registration (required to do business with the federal government) and opportunity search (where agencies publish solicitations).
You can search by keyword, NAICS code, set-aside type, agency, place of performance, and response deadline. SAM.gov publishes pre-solicitation notices, combined synopsis/solicitations, solicitations, and award notices. The Opportunity API allows programmatic access with a free API key.
Limitation: SAM.gov only covers federal procurement above the simplified acquisition threshold ($250,000 for most purchases, $25,000 minimum for publication). Below-threshold purchases use simplified procedures and may not appear on SAM.gov at all.
USASpending.gov (Federal Awards Data)
USASpending.gov tracks where federal money goes after award. It draws from the Federal Procurement Data System (FPDS) and covers over 4.8 million contract actions per year. Use it for competitive intelligence: who wins contracts in your space, at what price, under which contract vehicle.
Grants.gov (Federal Grants)
Grants.gov publishes federal grant opportunities — adjacent to contracts but a different instrument. Approximately $1 trillion per year flows through federal grants. If your services align with grant-funded programs, this is a parallel pipeline worth monitoring.
DLA DIBBS (Defense Parts)
The Defense Logistics Agency Internet Bid Board System publishes roughly 10,000 solicitations per week for defense parts and supplies. These are largely exclusive to DIBBS and do not appear on SAM.gov. If you supply manufactured parts, components, or materials to the military, DIBBS is a primary source.
State Portals
Each state operates its own procurement portal. Some notable ones:
- California — Cal eProcure
- New York — New York State Contract Reporter (NYSCR)
- Texas — Electronic State Business Daily (ESBD), with approximately 45,900 solicitations
- Florida — MyFloridaMarketPlace (MFMP)
- Pennsylvania — PA eMarketplace
- Washington — WEBS (Washington Electronic Business Solution)
- Ohio — Ohio Procurement
States set their own thresholds for competitive bidding. Texas requires competitive bids above $50,000. California's threshold is $100,000 for services. These thresholds determine which contracts get published and which are handled informally.
Local and Specialty Portals
Local procurement platforms include PlanetBids, BuySpeed (Periscope/Unison), Bonfire, DemandStar (serving 1,400+ agencies), OpenGov, PublicPurchase, and IonWave. Port authorities, transit agencies, and housing authorities often use dedicated systems. USAC's E-Rate program handles technology procurement for schools and libraries nationwide.
The pattern is consistent: each platform serves a cluster of agencies. No single platform covers all local procurement.
Registration Requirements
Before you can bid on federal contracts, you need to be registered. This is not optional — an unregistered entity cannot receive a federal award.
Unique Entity Identifier (UEI)
The UEI replaced the DUNS number in April 2022. You obtain a UEI through SAM.gov during entity registration. It is the primary identifier the federal government uses to track your company across all procurement systems.
SAM.gov Registration
SAM.gov registration requires your UEI, legal business name, physical address, banking information for electronic funds transfer (EFT), NAICS codes describing your capabilities, and entity validation through IRS records (for US entities). Registration takes 7-10 business days. It expires annually. An expired registration makes you ineligible.
CAGE Code
The Commercial and Government Entity (CAGE) code is assigned automatically during SAM.gov registration for domestic entities. Foreign entities receive an NCAGE code through their country's national codification bureau. CAGE codes are used throughout the defense supply chain.
Small Business Certifications
If your company qualifies as a small business under SBA size standards, consider pursuing additional certifications:
- 8(a) Business Development — for small disadvantaged businesses
- HUBZone — for businesses in Historically Underutilized Business Zones
- SDVOSB — Service-Disabled Veteran-Owned Small Business
- WOSB/EDWOSB — Women-Owned / Economically Disadvantaged Women-Owned Small Business
Each certification opens access to set-aside contracts with reduced competition. The 8(a) program also allows sole-source awards up to $4.5 million for services and $7 million for manufacturing.
State and Local Registration
Most states require separate vendor registration. Some accept a central registration. Others require registration with each individual agency. Budget time for this — registering across 10 states means 10 separate processes with different requirements, different renewal cycles, and different classification systems.
How to Search Effectively
Raw portal access is necessary but not sufficient. The difference between finding opportunities and drowning in noise comes down to search strategy.
NAICS Codes
The North American Industry Classification System (NAICS) is how the federal government categorizes what it buys. Every solicitation on SAM.gov carries a primary NAICS code. Your SAM.gov registration lists the NAICS codes you can perform under.
NAICS codes are hierarchical. 541512 (Computer Systems Design Services) is a subset of 5415 (Computer Systems Design and Related Services), which falls under 54 (Professional, Scientific, and Technical Services). Search at both the specific 6-digit level and the broader 4-digit level to avoid missing opportunities classified under neighboring codes.
One common mistake: registering under too few NAICS codes. A cybersecurity firm might register under 541512 (Computer Systems Design) but miss opportunities coded under 541519 (Other Computer Related Services), 541690 (Other Scientific and Technical Consulting), or 561621 (Security Systems Services). Review your competitors' SAM.gov profiles to see which NAICS codes they list.
Set-Asides
Federal agencies are required to set aside contracts for small businesses when there is a reasonable expectation that two or more small businesses will submit competitive offers. The government-wide small business contracting goal is 23% of prime contract dollars.
Filter by set-aside type on SAM.gov to find reduced-competition opportunities matching your certifications. In FY2023, small businesses received over $178 billion in federal prime contracts. The 8(a) program alone accounted for billions in sole-source and competitive set-aside awards.
Contract Types
Understanding contract types helps you prioritize. The main categories:
- Firm-Fixed-Price (FFP) — price is set at award. Lowest risk for the government, highest risk for you. Most common for well-defined requirements.
- Time-and-Materials (T&M) — you bill hourly rates plus materials. Common for services where scope is uncertain.
- Cost-Plus — you bill actual costs plus a fee. Used for R&D and complex programs. Requires an adequate accounting system.
- IDIQ (Indefinite Delivery/Indefinite Quantity) — a contract vehicle with a ceiling value and a minimum guarantee. Task orders are competed among IDIQ holders. GSA Schedules are a form of IDIQ.
- BPA (Blanket Purchase Agreement) — simplified ordering for recurring needs. Often established under GSA Schedule contracts.
GSA Schedule
A GSA Schedule (officially the Multiple Award Schedule, or MAS) is a long-term government-wide contract that allows agencies to buy from pre-approved vendors at pre-negotiated prices. Getting on a GSA Schedule requires an application through GSA's eOffer system, including pricing proposals, past performance, and commercial sales data.
The process takes 3-6 months. Once awarded, your products and services are visible on GSA Advantage (the government's online shopping platform) and you can compete for task orders issued to Schedule holders. GSA Schedule sales exceeded $40 billion in FY2023.
Common Mistakes Suppliers Make
Waiting for the solicitation. By the time a solicitation appears on SAM.gov, the agency has already defined requirements — often with input from incumbent suppliers. Engage early. Review forecast notices, sources sought, and Requests for Information (RFIs). Attend industry days. The pre-solicitation phase is where you shape the opportunity.
Ignoring subcontracting. Large federal contractors are required to submit small business subcontracting plans. If you cannot win the prime contract, position yourself as a subcontractor. USASpending.gov shows prime-sub relationships. The SAM.gov Subaward Reporting system tracks subcontract data.
Registering and waiting. SAM.gov registration does not generate inbound leads. You still need to search, build relationships with contracting officers, attend industry events, and respond to opportunities. Registration is necessary. It is not sufficient.
Treating government sales like commercial sales. Government procurement follows codified rules. The FAR governs how agencies evaluate proposals. Lowest Price Technically Acceptable (LPTA) and Best Value tradeoff are different evaluation methods that require different bid strategies. Read the solicitation instructions. Follow them literally.
Monitoring only one portal. A company that monitors SAM.gov but ignores state portals leaves the majority of US procurement unobserved. The federal market is $755 billion. The sub-federal market is $1.5 trillion or more. Below-threshold federal purchases — under $250,000 — may not appear on SAM.gov at all.
Underestimating compliance. Federal contracts come with compliance requirements: FAR clauses, DFARS supplements for defense, cybersecurity requirements (CMMC for defense contractors), reporting obligations, and audit rights. Non-compliance can result in contract termination, suspension, or debarment. Budget compliance costs into your pricing.
How Monitoring Tools Reduce Manual Search Time
The core problem with US procurement is not access — most portals are free and public. The problem is volume and fragmentation. A BD team that manually checks SAM.gov, three state portals, and two local platforms spends 2-3 hours per day on portal monitoring. They miss the other 25 portals they should be checking.
Procurement monitoring tools address this by aggregating sources into a single feed. Instead of logging into each portal, parsing different formats, and maintaining separate alert configurations, you define your search criteria once and receive a unified stream of matching opportunities.
Duke tracks 30+ US procurement sources, including SAM.gov, DemandStar, PlanetBids, USAC E-Rate, DLA DIBBS, Socrata-based open data portals (NYC, Chicago, San Francisco), and state portals across major markets. These feed into the same procurement graph that covers 30 countries and 61.5 million records globally. Federal opportunities appear alongside state and local ones, normalized with consistent classification codes and buyer identifiers.
The practical value is coverage. A single monitoring setup replaces daily logins to a dozen portals. Below-threshold contracts that are invisible on SAM.gov surface through state and local source integration. Opportunities that close in 14 days — common at the state and local level — appear in your feed the day they publish, not three days later when you get around to checking that portal.
Time recovered from manual monitoring redirects to the activities that actually win contracts: relationship building, proposal writing, and pre-solicitation engagement.
Getting Started: A Practical Checklist
Week 1-2: Registration. Register on SAM.gov. Obtain your UEI. Select your NAICS codes carefully — review competitor profiles and past awards to identify codes you may have missed. If you qualify, begin small business certification applications (8(a), HUBZone, SDVOSB, or WOSB).
Week 3: Research. Use USASpending.gov to research the last 3 years of awards in your NAICS codes. Identify which agencies buy what you sell, who wins those contracts, at what price, and under which vehicles. This research shapes your pipeline.
Week 4: GSA Schedule assessment. Determine whether a GSA Schedule makes sense for your business. If agencies in your target market frequently buy through Schedules, the 3-6 month application process is worth starting early.
Ongoing: Monitor and engage. Set up alerts on SAM.gov for your NAICS codes. Register on the state portals where your target agencies operate. Consider a monitoring tool that aggregates across sources. Attend industry days and pre-solicitation conferences published in forecast notices.
Quarterly: Review and adjust. Check SAM.gov registration renewal dates. Review your NAICS code list against actual opportunities you have seen. Update your capability statement. Refresh your USASpending research to track shifts in agency buying patterns.
Frequently Asked Questions
How long does SAM.gov registration take?
Initial SAM.gov registration takes 7-10 business days for domestic entities, longer for foreign ones. The process requires a Unique Entity Identifier (UEI), banking information, NAICS codes, and entity validation through IRS records. Registration expires annually and must be renewed to remain eligible for federal contracts. Start the process well before you plan to bid — an expired registration makes your proposals non-compliant.
Can foreign companies bid on US government contracts?
Yes, with restrictions. The US is a signatory to the WTO Government Procurement Agreement (GPA), which grants companies from GPA countries access to federal contracts above GPA thresholds. However, the Buy American Act (BAA) and Trade Agreements Act (TAA) impose domestic content and country-of-origin requirements on many contracts. Some contracts are restricted to US-only bidders. Foreign companies typically need a US subsidiary or partner, a US bank account, and SAM.gov registration. Defense contracts carry additional restrictions under ITAR and DFARS.
What are set-asides and do they matter?
Set-asides reserve contracts for specific categories of small businesses: Small Business (SB), 8(a) Business Development, HUBZone, Service-Disabled Veteran-Owned (SDVOSB), and Women-Owned Small Business (WOSB). They matter significantly. The federal government sets a 23% small business contracting goal, and agencies face pressure to meet it. In FY2023, small businesses received over $178 billion in federal prime contracts. If your company qualifies for any set-aside category, certification opens access to a substantial pool of reduced-competition opportunities.
What is the difference between SAM.gov and USASpending.gov?
SAM.gov is where you find and bid on active opportunities. It publishes contract notices, solicitations, and manages entity registration. USASpending.gov is where you research past awards — who won, how much, and under which vehicle. USASpending draws from the Federal Procurement Data System (FPDS) and tracks over 4.8 million contract actions per year. Use USASpending to research the competitive landscape and pricing, then use SAM.gov to find and respond to live opportunities.
Do I need to monitor state and local portals separately from SAM.gov?
Yes. SAM.gov covers federal procurement only. State and local governments — which collectively spend an estimated $1.5-2 trillion annually — use their own portals. There is no US equivalent of the EU's TED that aggregates sub-federal procurement. Each of the 50 states has at least one portal, and cities, counties, school districts, and special authorities each choose their own e-procurement vendor. Monitoring tools that aggregate across these sources reduce the manual burden from dozens of daily portal checks to a single feed.