By Farzana Ali
SBA size standards use five years of receipts or 24 months of employees. See which applies, when your size locks, and what the 2026 proposed rule changes. SBA size standards measure five completed fiscal years of receipts or 24 months of average employees, and the window hides last year entirely. The harder question is which date fixes your size, and what reopens it. Both, and over periods longer than most owners expect. SBA size standards measure either average annual receipts across five completed fiscal years or an average headcount across the preceding 24 calendar months. The table at 13 CFR 121.201 fixes which measure your NAICS code uses, and you do not get to pick. The harder half of the question is not the measure at all. It is the date. Your size freezes on the day you self-certify with an offer that includes price, and it stays frozen for that contract. So a firm can be too big to bid tomorrow and still be a small business on four contracts it already holds. Small On Which Date 13 CFR 121.404(a) (https://www.ecfr.gov/current/title-13/section-121.404) sets the moment. A concern must qualify as small "as of the date the concern submits a written self-certification that it is small to the procuring activity." That certification arrives with the initial offer or response that includes price, under the NAICS code assigned to the contract. Then it adds the sentence that answers half the question. "Once awarded a contract as a small business, a firm is generally considered to be a small business throughout the life of that contract." Read those two together. Growth after award does not strip the award. Growth before the next offer does. A follow-on or a renewal gets no credit for history, because 121.404(j) calls it a new contracting action and sets size at the new self-certification. Two other dates run on their own rules. For architect-engineering, design-build and two-step sealed bidding, 121.404(h) uses the initial bid or proposal, which may carry no price. For subcontracts, 121.404(g) uses the date you certify to the prime, against the standard at 121.410. What SBA Size Standards Measure Receipts or employees, never both for one code. The averaging windows are long on purpose. 13 CFR 121.104(c)(1) (https://www.ecfr.gov/current/title-13/section-121.104) divides the total receipts of your five most recently completed fiscal years by five. A firm in business under five full years annualises instead: total receipts divided by weeks in business, multiplied by 52. A short year inside the window gets the same treatment, so the short year plus four full years divide by their combined weeks, times 52. Employees follow 13 CFR 121.106(b)(1), which takes the average "for each of the pay periods for the preceding completed 24 calendar months." Under 24 months in business, you average the pay periods you have. ! Three dates
SBA size standards measure five completed fiscal years of receipts or 24 months of average employees, and the window hides last year entirely. The harder question is which date fixes your size, and what reopens it.
Both, and over periods longer than most owners expect. SBA size standards measure either average annual receipts across five completed fiscal years or an average headcount across the preceding 24 calendar months. The table at 13 CFR 121.201 fixes which measure your NAICS code uses, and you do not get to pick. The harder half of the question is not the measure at all. It is the date. Your size freezes on the day you self-certify with an offer that includes price, and it stays frozen for that contract. So a firm can be too big to bid tomorrow and still be a small business on four contracts it already holds. Small On Which Date 13 CFR 121.404(a) (https://www.ecfr.gov/current/title-13/section-121.404) sets the moment. A concern must qualify as small "as of the date the concern submits a written self-certification that it is small to the procuring activity." That certification arrives with the initial offer or response that includes price, under the NAICS code assigned to the contract. Then it adds the sentence that answers half the question. "Once awarded a contract as a small business, a firm is generally considered to be a small business throughout the life of that contract." Read those two together. Growth after award does not strip the award. Growth before the next offer does. A follow-on or a renewal gets no credit for history, because 121.404(j) calls it a new contracting action and sets size at the new self-certification. Two other dates run on their own rules. For architect-engineering, design-build and two-step sealed bidding, 121.404(h) uses the initial bid or proposal, which may carry no price. For subcontracts, 121.404(g) uses the date you certify to the prime, against the standard at 121.410. What SBA Size Standards Measure Receipts or employees, never both for one code. The averaging windows are long on purpose. 13 CFR 121.104(c)(1) (https://www.ecfr.gov/current/title-13/section-121.104) divides the total receipts of your five most recently completed fiscal years by five. A firm in business under five full years annualises instead: total receipts divided by weeks in business, multiplied by 52. A short year inside the window gets the same treatment, so the short year plus four full years divide by their combined weeks, times 52. Employees follow 13 CFR 121.106(b)(1), which takes the average "for each of the pay periods for the preceding completed 24 calendar months." Under 24 months in business, you average the pay periods you have. ! Three dates
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