SBA 504 Loan Amortization Schedule: How Your Payments Break Down
See exactly how SBA 504 payments split between principal and interest over time, why the split changes, and how the 504 two-loan structure affects your total payment.
What Does “Amortization” Mean?
Amortization is the process of paying off a loan through a series of regular payments. Each payment contains interest (the cost of borrowing) and principal (the amount that reduces your balance). Early in a loan, a bigger share of the payment is interest; later, more goes to principal because interest is calculated on the remaining balance.
How SBA 504 Structure Affects Payments
SBA 504 loans usually have two parts: a bank first lien (often ~50% of project cost) and a CDC/SBA debenture second lien (often ~40%), plus your down payment (often ~10%). Each loan has its own amortization schedule, rate, and sometimes different terms.
Sample 504 Amortization Schedule
Here’s an illustrative example of a CDC portion amortization schedule for a $175,000 CDC loan at a fixed rate over 20 years. Exact amounts depend on your rate, fees, and closing structure.
| Month | Payment | Interest | Principal | Remaining balance |
|---|---|---|---|---|
| 1 | $1,222 | $838 | $384 | $174,616 |
| 6 | $1,222 | $833 | $389 | $173,085 |
| 12 | $1,222 | $825 | $397 | $171,189 |
| 24 | $1,222 | $807 | $415 | $167,171 |
| 60 | $1,222 | $712 | $510 | $148,592 |
| 120 | $1,222 | $518 | $704 | $107,488 |
| 180 | $1,222 | $234 | $988 | $48,502 |
| 240 | $1,222 | $6 | $1,216 | $0 |
Use the SBA 504 loan calculator to generate a full amortization schedule based on your project cost, down payment, rates, and term.
10-Year vs 20-Year: How the Term Changes Everything
Longer terms usually mean lower monthly payments but higher total interest. The right choice depends on cash flow and long-term cost tolerance.
| Metric (example) | 10-year term | 20-year term |
|---|---|---|
| Monthly payment | Higher | Lower |
| Total interest | Lower | Higher |
| Interest-heavy early years | Less pronounced | More pronounced |
Can You Pay Off a 504 Loan Early?
Yes, but the CDC portion typically has a prepayment penalty during the first 10 years. If you’re considering early payoff, compare the penalty to the interest you’d save. For deeper context, see our SBA 7(a) vs 504 vs Express comparison and current rates page.
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SBA 504 Amortization FAQs
The CDC portion of a 504 loan is fixed for the entire term. The bank (first-lien) portion is set by the lender and is often variable or resets after a fixed period.
An amortization schedule shows the breakdown of each payment into principal and interest plus the remaining balance. A repayment schedule typically just shows dates and payment amounts.
Yes. Your CDC and lender can provide the schedule at or near closing. If you need a schedule before closing to compare options, you can generate one using our SBA 504 loan calculator.
Extra payments reduce principal and therefore reduce future interest. However, 504 loans may have prepayment rules/penalties (especially on the CDC portion) that matter in the first 10 years.
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SBA Calculators is NOT affiliated with, endorsed by, or connected to the U.S. Small Business Administration (SBA), any federal agency, or any government entity.
This website is privately operated and provides educational financial calculators for planning purposes only. All calculations are estimates and actual loan terms may vary significantly.
Use of our calculators creates no obligation. We may connect you with qualified private lenders, but we do not guarantee loan approval, specific terms, or rates.
This website does not constitute financial, legal, or professional advice. Always consult qualified professionals regarding your specific situation.