If you run a supplier-inclusion or subcontracts program, you've been asked the same question by finance, by a corporate customer, or by a contracting officer: how much did we spend with diverse and small suppliers last year? The honest answer is that it depends on what you're counting and how. Two numbers hide inside that question, and confusing them is how programs end up reporting the same dollar twice or claiming credit they can't defend in an audit.
Tier 1 is the spend you pay a diverse or small supplier directly. Tier 2 is the spend that reaches diverse suppliers through your own suppliers, one layer down in the chain. Both count, but they count differently, they get reported through different mechanisms, and they carry different burdens of proof. Here's how to keep them straight.
Tier 1: the spend you pay directlyTier 1 is the clean number. It's every dollar your company pays directly to a supplier that holds a qualifying status: a small business, or a business certified as minority-owned, women-owned, veteran-owned, service-disabled veteran-owned, LGBTQ-owned, or disability-owned. You contracted with them, you cut the check, and the spend pulls straight from your AP or ERP system.
The work in Tier 1 isn't the math. It's keeping the supplier records accurate. A supplier's certification can lapse. A small business can outgrow its size standard mid-year and stop counting against the goal it used to satisfy. So Tier 1 reporting is really a data-hygiene problem: matching your vendor master to current, verified certifications, then summing what you paid the ones that still qualify.
That verification step matters more than it used to on the federal side. As of the SBA final rule effective August 5, 2024, service-disabled veteran-owned firms can no longer self-certify for awards or subcontracts that count toward goals. They have to be certified through SBA's VetCert program. Self-certified SDVOSBs stopped counting toward a prime contractor's small business subcontracting goals after the application deadline of December 22, 2024. Small disadvantaged business status tightened on the same logic. If you're crediting a firm in Tier 1 based on a self-certification that's no longer valid, your number is wrong before you ever submit it. Confirm status against the issuing body. Our certifying body directory lists who issues which certification and where to check it.
Tier 2: the spend that flows through your suppliersTier 2 is the spend your direct (Tier 1) suppliers make with diverse and small businesses to deliver your work. You don't pay those second-tier firms. Your supplier does. But because that spend exists to fulfill your contract, you can claim a share of the economic impact.
Tier 2 is where programs grow their reported numbers, and it's also where the methodology gets contested. There are two accepted ways to report it, and the difference is the whole ballgame.
Direct (unallocated) Tier 2. Your Tier 1 supplier reports the actual dollars it spent with a diverse subcontractor specifically to support your account. A staffing prime hires a minority-owned background-check vendor for the workers on your contract, and reports that exact amount to you. This is the precise method. The spend is real, it's tied to your work, and it holds up in an audit. The cost is administrative: your suppliers have to track spend by customer, which many can't or won't do at line-item granularity.
Indirect (proportional) Tier 2. Your supplier reports its total diverse spend across all its customers, then attributes a slice to you based on your share of its revenue. If a Tier 1 supplier did $50 million in business last year, spent $5 million with diverse suppliers, and you were 10% of its revenue, you'd be credited roughly $500,000 in indirect Tier 2. This is the common method in large programs because exact attribution isn't practical at scale. It's also the softer number. You're claiming a proportional estimate, not traced dollars, so be explicit in your reporting about which method produced each figure.
A clean Tier 2 program asks suppliers for direct numbers where they can produce them and accepts proportional allocations where they can't, then never blends the two without labeling them. Double-counting is the cardinal sin here: a dollar one of your suppliers reports as their Tier 1 spend can also show up in your Tier 2, which is fine, because it's a different company's report, but the same dollar should never appear twice inside your own total.
Where this meets federal complianceCorporate Tier 2 programs are voluntary. The 2025 rollback of federal contractor affirmative-action rules, including the rescission of Executive Order 11246, hit those voluntary corporate efforts, and some companies trimmed or rebranded them. What did not change is the statutory federal subcontracting obligation. If you hold federal prime contracts, the math below is a contract requirement, not a values exercise.
Under FAR 52.219-9, a large prime contractor on a covered contract above the threshold has to maintain a small business subcontracting plan with goals for small business and the socioeconomic categories. The government-wide targets the plan ladders up to are 23% of prime dollars to small business overall, with 5% to women-owned, 5% to small disadvantaged business, 5% to service-disabled veteran-owned (raised from 3% by the FY2024 NDAA, P.L. 118-31), and 3% to HUBZone firms. Your individual plan goals are negotiated, but those are the federal benchmarks behind them. The program rules live in FAR subpart 19.7.
You report performance against that plan through the Electronic Subcontracting Reporting System (eSRS) at esrs.gov, on two forms:
- The Individual Subcontract Report (ISR), filed per contract, showing your subcontract awards to each small business category.
- The Summary Subcontract Report (SSR), an agency-wide or company-wide rollup.
Reports are due within 30 days after the end of the government's fiscal year, and the data is limited to awards made to your immediate next-tier subcontractors. That last point is the federal version of the Tier 1 rule: in eSRS you report what you awarded directly, and you flow the plan requirement down so your own large subcontractors report theirs. Federal subcontracting reporting is fundamentally a Tier 1 mechanism. Corporate Tier 2 reporting is the layer you build on top of it voluntarily, for your commercial customers and your own scorecard.
Finding suppliers who count in the first placeNone of this reporting helps if the suppliers aren't there to spend with. The harder problem is sourcing: finding certified small and diverse firms in the right NAICS codes before the requisition goes out, not scrambling to attribute spend after the fact.
On the federal side, SBA's Small Business Search (the database formerly called the Dynamic Small Business Search, DSBS) lists certified small businesses, and SBA's SUBNet portal is where primes with subcontracting plans post opportunities for small subcontractors to find. Those are the federal sourcing rails. For the corporate side, and for cross-checking a certification before you credit a dollar to it, you need a verified pool you can search by certification and capability.
That's the gap our supplier directory fills. You can search certified diverse and small suppliers by certification type, industry, and NAICS code, then verify the certification against its issuing body before you onboard. Build your pipeline from a pool that's already vetted and your Tier 1 number takes care of itself, because every supplier you add already counts.
If you're new to the federal sourcing rails specifically, our breakdown of the cheapest path to federal contracts walks through how small suppliers register and get found, which is the same plumbing you'll use to find them.
The short versionTier 1 is what you pay diverse and small suppliers directly, it's the easy number to pull and the one that maps to your federal eSRS reporting, and its only real risk is stale certification data. Tier 2 is what flows through your suppliers, reported either as traced direct spend or as a proportional allocation, and the discipline is labeling which method produced each figure and never counting a dollar twice. Get your supplier records verified and your sourcing pipeline full, and both numbers get easier to defend.
Start by searching the supplier directory for certified firms in the categories your goals require.
