The federal government buys almost everything — roofing, janitorial services, IT support, landscaping, training, trucking — and is required by law to send a meaningful share of it to small businesses. Getting set up to compete is free. This guide walks the whole path: registration, codes, certifications, where the opportunities live, and what the daily reality looks like once you're in.
SAM.gov is the government's official registration and opportunities system. To bid on federal contracts, your business must be registered there. Registration is completely free.
Say it out loud, because there's an entire scam industry built on people not knowing it: companies will call and email you offering to "complete your SAM registration" or "renew your SAM profile" for hundreds of dollars. Some make their emails look official. The registration they're charging you for is free at sam.gov, and the renewal (required annually) is also free. You may legitimately choose to pay a consultant for help, but no payment is ever required, and the unsolicited "your SAM is about to expire, pay now" outreach is predatory. Hang up.
Registering gets you a UEI (Unique Entity ID — the government's identifier for your business, issued through SAM.gov) and, for most contractors, a CAGE code. You'll need basic business info, your tax ID, and banking details for payment. Set aside a couple of sessions; the form is long but free.
NAICS codes are six-digit industry codes; every federal solicitation carries one, and your registration lists the codes you work under. They drive what opportunities you find and which size standards apply to you. Choosing well matters enough that we wrote a separate guide: NAICS codes for government contractors. Short version: pick codes for work you would actually bid, starting with one primary code.
"Small business" is defined per NAICS code by the SBA size standards — a revenue or employee-count ceiling that varies by industry. Check yours with the SBA's Size Standards Tool at sba.gov. Most readers of this guide will be comfortably small; confirm anyway, because your size status is a representation you make when bidding.
Beyond plain small business status, the SBA runs set-aside programs that reserve contracts for specific groups:
If you qualify for a certified program, pursuing the certification is usually worth the paperwork — set-aside competitions have dramatically smaller fields. The certifications themselves are free to apply for through SBA.
Every federal contract opportunity above the micro-purchase thresholds posts publicly at SAM.gov under Contract Opportunities. No paid tool has secret listings; they all start from this same public feed.
Notices come in types, and knowing them tells you where in the buying process the agency is:
| Notice type | What it means | What you do |
|---|---|---|
| Sources Sought | Market research — no RFP yet; the agency is asking who can do the work | Respond with a short capability statement. This can trigger a small business set-aside — see our Sources Sought guide |
| Presolicitation | A solicitation is coming soon; early details posted | Read it, start preparing, watch for the full solicitation |
| Solicitation (RFP/RFQ/IFB) | The actual request — requirements, evaluation criteria, due date | Decide bid/no-bid; if bidding, follow the instructions exactly |
| Combined Synopsis/Solicitation | Synopsis and solicitation in one notice, common for commercial items, often with shorter timelines | Same as a solicitation — read fast, the clock is usually short |
When you open a solicitation, read the statement of work (what they want), the evaluation criteria (how they'll choose), the set-aside (whether you're eligible), and the deadline — in that order. Many notices get amended after posting, so check for amendments before you submit anything.
Here's the best-kept non-secret in this field: the government funds a nationwide network of free counselors whose entire job is helping businesses like yours win government contracts. They're called APEX Accelerators (formerly PTACs), and they will sit with you — at no charge — to fix your SAM registration, review your capability statement, explain a solicitation, and point you at certifications you qualify for.
We recommend them without reservation. A free hour with an APEX counselor is worth more than most paid courses. Find your local office at apexaccelerators.us.
Once you're registered, here's the part nobody puts in the brochure: opportunities don't find you. New notices post on SAM.gov every business day, and the ones matching your codes arrive as a stack of dryly-titled listings, each of which you must open, read, and judge. That nightly reading is where most small contractors' federal ambitions quietly stall.
Two kinds of tools shrink it:
Free: SAM.gov saved-search alerts. Build searches filtered by your NAICS codes, set-asides, and location, and get a daily email of new matches. Free, official, and step one for everyone — our setup guide walks through it. The honest limit: alerts filter, they don't judge. Every row is still a notice you must read yourself.
Paid: matching tools that read the notices for you. That's the layer Bird Dog occupies. It reads the full notice descriptions against your 60-second capability profile, never shows you contracts your set-aside status makes you legally ineligible for, knows construction is location-bound while remote services aren't, and hands you a short ranked list — Strong, Possible, Broad — with the fit reasons in plain English. Seeing your daily matches is free; unlocking a specific opportunity's full brief starts at $9.99. The SAM.gov data is free either way — you'd only ever be paying for the matching work.
Register (free), pick your codes, set up the free alerts, call your APEX Accelerator — and then, when the daily pile gets heavy, add judgment on top.
See what fits your shop — free, 60-second setup.
Last reviewed: 2026-06-10