HOW SBA 504 WORKS
The Three-Party Financing Structure
SBA 504 loans use a unique structure that splits the financing between three parties. This is what makes the 10% down payment possible — and it fixes the rate on the CDC share for its full term.
Borrower Equity
Your down payment — 15% for a newer business or special-purpose building, 20% if both. Conventional CRE loans typically need 25–35%.
CDC / SBA Loan
Fixed-rate 10-, 20- or 25-year debenture backed by the SBA. This is the fixed-rate SBA portion.
Bank First Mortgage
Conventional first-position loan from an SBA-approved lender. Typically 10–20 year term.
100% of the project cost
10% Down Payment
10% equity vs. 25–35% for conventional CRE loans. Preserves working capital for operations and growth.
Up to 25-Year Fixed Rate
The CDC/SBA portion carries a fully fixed rate for its whole term — 10, 20 or 25 years. No balloon payments, no rate resets, no surprises.
Below-Market Pricing
SBA debenture rates are set at a monthly bond sale, priced off Treasury yields plus a fixed spread — not by your bank.
No Balloon on the SBA Portion
The CDC/SBA portion fully amortizes over its term; ask about the bank first lien, which can be shorter. That removes most of the refinancing risk of 5–10 year balloon structures.
Jobs or Public Policy Goal
Each project must create or retain jobs at the ratio SBA sets per dollar of its share in a Federal Register notice, or meet a community development or public policy goal instead (13 CFR 120.861–120.862).
Up to $5.5M SBA Portion
Standard 504 limit is $5M for the SBA/CDC portion. Small manufacturers and energy-saving or renewable-energy projects can reach $5.5M (13 CFR 120.931). The bank first mortgage has no SBA limit, so the total project can be much larger.
WORKED EXAMPLE
Example: Buying a $2,000,000 Building with SBA 504
Example: an established business buys a $2,000,000 general-purpose building it will occupy. Assumptions for illustration only: a 6.5% CDC rate fixed for 25 years and a 7.0% bank rate amortized over 25 years, run through our SBA 504 calculator. For comparison, a conventional loan at 75% of the price, also at 7.0% over 25 years.
| SBA 504 | Conventional (25% down) | |
|---|---|---|
| Cash down | $200,000 (10%) | $500,000 (25%) |
| Bank first mortgage | $1,000,000 — $7,068/mo | $1,500,000 — $10,602/mo |
| CDC / SBA loan | $800,000 — $5,402/mo | — |
| Total monthly payment | $12,469 | $10,602 |
SBA 504 keeps $300,000 more cash in the business. The payment is $1,867 a month higher because $300,000 more is borrowed — about $22,400 a year for $300,000 of working capital kept, and the CDC share of the rate is fixed for the full 25 years. The CDC and SBA fees below are financed into the CDC loan and would raise its balance slightly; they are not in these figures.
Typical ranges, updated September 2026. Your terms depend on the property, the borrower and the lender.
FEES
SBA 504 Fees: What They Are and How They Are Paid
Most SBA 504 fees are not paid out of pocket. They are added to the CDC loan (the debenture) and repaid over its term, so they show up as a slightly larger CDC balance rather than as cash at closing.
| Fee | Amount | How it is paid |
|---|---|---|
| CDC processing fee | Up to 1.5% of the net debenture | Can be reimbursed from the debenture proceeds |
| SBA upfront guaranty fee | 0.5% of the net debenture | Financed into the debenture |
| CDC closing fee, funding fee, underwriters’ fee | Set at closing and at the debenture sale | Financed into the debenture |
| CDC servicing fee | 0.625%–2% a year on the unpaid balance | Built into the monthly CDC payment |
| SBA annual fee | Set by SBA each fiscal year | Built into the monthly CDC payment |
| Bank first mortgage | The bank’s own fees | Quoted on the bank’s term sheet |
SBA also charges the bank a one-time fee of 0.5% of its first mortgage when that loan is senior to the CDC loan. Ask the bank whether it passes that cost on.
Sources: 13 CFR 120.971 (CDC fees), 13 CFR 120.972 (third-party lender participation fee), Congressional Research Service, SBA 504/CDC Loan Guaranty Program (R41184).
Typical ranges, updated September 2026. Your terms depend on the property, the borrower and the lender.
THE PROCESS
How an SBA 504 Loan Closes: Bank, CDC, SBA, Debenture
- Bank commitment. The bank underwrites the whole project and commits to its first mortgage (about 50%) and, usually, the interim loan for the CDC share.
- CDC application. A Certified Development Company — a nonprofit certified by SBA — underwrites the 40% second mortgage and submits it to SBA.
- SBA authorization. SBA approves the CDC loan and issues the authorization that sets its terms.
- Closing with an interim loan. You close on the building. The bank funds its first mortgage and an interim (bridge) loan for the CDC share, so the purchase is not held up by the debenture schedule.
- Debenture sale. The CDC loan is pooled into SBA’s next debenture sale — monthly for 20- and 25-year debentures. The proceeds repay the interim loan, and your CDC rate is fixed at that sale.
- Repayment. You make two payments: the bank loan and the fixed-rate CDC loan for 10, 20 or 25 years.
From a complete application to closing, plan on 60–90 days. Because the CDC rate is set at the debenture sale after closing, the rate on your term sheet is an estimate until then.
Sources: Congressional Research Service, SBA 504/CDC Loan Guaranty Program (R41184); Office of the Comptroller of the Currency, SBA’s Certified Development Company/504 Loan Program (Community Developments Insights, December 2018).
CURRENT RATES & TERMS
SBA 504 vs. Conventional CRE Loans
See how SBA 504 compares to conventional bank financing on the metrics that matter most to CRE borrowers.
| SBA 504 | Conventional | |
|---|---|---|
| Down Payment | 10% | 25–35% |
| Interest Rate (CDC) | 6.25–7.25% fixed | 6.5–8% |
| Term Length | 10, 20 or 25 years (CDC) | 5–10 yr |
| Amortization | Fully amortizing over the CDC term | 20–30 yr |
| Balloon Payment | None on SBA portion | Yes (at term end) |
| Max Loan (SBA) | $5M – $5.5M | No SBA limit |
| Occupancy Req. | 51%+ owner-occupied | None |
| Prepayment Penalty | Declining over 10 years | Varies |
| Personal Guarantee | Required (20%+ owners) | Required |
| Best For | Owner-occupants, long hold | Investors, flexible use |
Typical ranges, updated September 2026. Your terms depend on the property, the borrower and the lender.
QUALIFICATION REQUIREMENTS
Who Qualifies for SBA 504?
SBA 504 is designed for established businesses purchasing or improving owner-occupied commercial real estate. Requirements are more accessible than most borrowers expect.
51%+
Owner Occupancy
Your business must occupy at least 51% of the property. For new construction, it must occupy at least 60% from the start, plan to occupy more within three years, and occupy all space it doesn’t permanently lease (up to 20%) within ten years.
680+
Credit Score
SBA sets no minimum score; many lenders look for 680+. Some CDC partners may work with 660+ for strong business profiles.
No minimum
Time in Business
A business two years old or less qualifies with 15% down instead of 10% (20% if the building is also special-purpose). Lenders still look for management experience in the industry.
1.25x+
Debt Service Coverage
Global DSCR including all business debts. Lenders want to see your business can comfortably service the new loan.
$20M max
Net Worth Limit
Under the SBA’s alternative size standard: tangible net worth of $20M or less and average net income after taxes of $6.5M or less for the prior two years. Most small businesses qualify.
All major types
Eligible Properties
Office, retail, warehouse, industrial, medical, restaurant, hotel, mixed-use, and special purpose. Must be owner-occupied.
Free tools
Run the numbers
The same metrics a lender checks — free, instant, no signup. Each result links straight into an application.
- SBA 504 Loan Calculator Estimate your SBA 504 loan structure — see the three-part split (borrower, CDC, bank), monthly payments for each portion, and total project financing.
- SBA 7(a) Payment Calculator Estimate monthly payments on an SBA 7(a) loan with Prime + spread variable rate. See how rate changes affect your payment and plan for different scenarios.
FREQUENTLY ASKED QUESTIONS
SBA 504 Loan FAQ
What can SBA 504 funds be used for?
SBA 504 covers the purchase of existing buildings, land, new construction, major renovations, and heavy equipment with a 10+ year useful life. It cannot be used for working capital, inventory, or debt consolidation unrelated to the project.
Can green card holders or non-U.S. citizens own a business that gets an SBA loan?
Not since March 1, 2026. SBA now requires 100% of a business’s direct and indirect owners to be U.S. citizens or U.S. nationals whose principal residence is in the U.S.; lawful permanent residents (green card holders) can no longer hold any ownership in an SBA 7(a) or 504 borrower (SBA Policy Notice 5000-876441). Conventional bank, DSCR and other non-SBA loans are still available to those owners.
How long does SBA 504 approval take?
Typical timeline is 60–90 days from complete application to closing. The CDC processes its portion in parallel with the bank’s first mortgage underwriting. Having documents ready upfront can significantly accelerate the timeline.
Can I refinance into an SBA 504?
Yes. An owner-occupied business can refinance existing debt on its building into a 504 loan, with or without an expansion. Since November 15, 2024, a refinance without expansion can reach 90% of the property’s value, including eligible business expenses paid out in cash, and the earlier 20% cap on those expenses and the 50% program cap were removed (SBA direct final rule, 89 FR 79734).
What is the difference between SBA 504 and 7(a)?
SBA 504 finances fixed assets — buildings, land, construction and long-life equipment — with a bank loan plus a CDC loan whose rate is fixed for 10, 20 or 25 years, and as little as 10% down. SBA 7(a) is one loan from one lender, usually variable-rate, that can also cover working capital, inventory or a business purchase. For buying an owner-occupied building, 504 usually has the lower fixed payment on the SBA share; 7(a) fits when the project mixes real estate with working capital.
Is there a prepayment penalty?
The CDC/SBA portion has a declining prepayment penalty during the first 10 years, starting at roughly the debenture interest rate and declining each year to zero. The bank first mortgage prepayment terms are negotiated separately.
What does the 10/50/40 structure mean for my monthly payment?
The CDC/SBA portion carries a fixed rate and amortizes over its full term, with no balloon. But with 10% down you borrow more, so the total payment can be higher: in the $2,000,000 example above it is $12,469 a month vs. $10,602 with 25% down, while $300,000 more cash stays in the business. Use our SBA 504 Calculator to model your specific scenario.
Related on BestLoanUSA
Related financing
All loans →- Owner-Occupied An owner-occupied commercial real estate loan finances a building your own business uses — for SBA loans, at least 51% of an existing building or 60% of a new one. SBA 504 and 7(a) allow as little as 10% down; conventional bank loans usually need more, at rates around 6.25–8%. Owner-occupiedSBA 504
- CRE Refinancing A commercial real estate refinance replaces your existing mortgage with a new loan — to lower the rate, replace a maturing balloon, move from floating to fixed, or take cash out. To refinance, check your current loan’s maturity and prepayment penalty, get the property appraised, show that its net operating income covers the new payment at the lender’s minimum DSCR, compare term sheets and close — the new lender pays off the old loan, usually in 30–60 days. Bank, SBA 504, CMBS and DSCR lenders price refinances at about 6.25–8.75%. SBA 504Balloon payment
- What Is a CRE Loan? A commercial real estate loan is financing for income-producing or business-use property — offices, retail, industrial, multifamily (5+ units) — underwritten on the property’s cash flow and value as well as the borrower, not a home mortgage. Owner-occupiedBalloon payment
- Tenant Improvement Tenant improvement (TI) financing pays for the buildout of a commercial space — walls, electrical, HVAC, fixtures — whether you own the building or lease it. Owners can roll TI into an SBA 504 or conventional loan; tenants often combine SBA 7(a) with the landlord’s TI allowance. Owner-occupiedSBA 504
Guides & articles
All articles →- SBA 504 Loans for Commercial Real Estate: 10% Down How the SBA 504 loan lets a business buy its own commercial property with as little as 10% down — the structure, who qualifies, costs and the process. SBA 504Owner-occupied
- Owner-Occupied Commercial Real Estate Loans: Who Qualifies How owner-occupied commercial real estate loans work — SBA 504, 7(a) and bank options, occupancy rules, down payments — and who qualifies. Owner-occupiedSBA 504
- SBA 504 vs Conventional Commercial Mortgage: Cost and Fit SBA 504 vs a conventional bank mortgage for buying your own building: down payment, rate, fees, eligibility and what each owes at year 10, with a $2M example. SBA 504Owner-occupied