INTEREST RATES & COMMERCIAL FINANCE · SEPTEMBER 22, 2026
Treasury Yield Curve Holds Near 5% at the 10-Year Point
Treasury's September 21 curve showed the 5-year par yield at 4.83%, the 10-year at 4.96%, and the 30-year at 5.29%, keeping fixed-rate and refinance benchmarks elevated after the September FOMC decision.
What Treasury published for September 21
Source publication date: September 21, 2026. Treasury reported par yields of 4.45% at one year, 4.76% at two years, 4.83% at five years, 4.96% at ten years, and 5.29% at thirty years. Compared with September 18, the 10-year yield declined five basis points and the 30-year yield declined five basis points, while the two-year yield was unchanged. These are daily estimated par yields derived from market inputs, not lender quotes.
- 015-year: 4.83%
- 0210-year: 4.96%
- 0330-year: 5.29%
Why the curve matters to commercial borrowers and investors
Treasury yields can enter the pricing of fixed-rate commercial mortgages, swaps, bonds, government-related programs, and other financing structures, while shorter facilities may use Prime, SOFR, lender cost of funds, or another benchmark. The relevant point on the curve depends on duration, amortization, call protection, prepayment, credit spread, and execution date. A 10-year Treasury level does not equal the coupon on a 10-year commercial mortgage.
The policy rate and long-term yields are different signals
The Federal Reserve's September policy decision may influence short-term funding costs and market expectations, but investors set Treasury prices across maturities continuously. Inflation, growth, federal borrowing, global capital flows, and risk appetite can move longer yields independently. A loan quote can also move because of lender spread, liquidity, collateral, leverage, or portfolio capacity even when the referenced Treasury yield is stable.
Practical borrower and investor takeaway
Ask each lender to identify the exact index, observation date, spread, floor, rate-lock process, lock period, extension cost, breakage or prepayment provision, amortization, and maturity. Update acquisition, construction, and refinance models with the current benchmark and a higher-rate case; then test debt-service coverage, proceeds, equity, and exit value. Investors should match duration and liquidity to their objectives rather than infer a directional forecast from one day's curve.
Borrowers should reprice current quotes, compare benchmark date and lock mechanics, and stress-test debt service and refinance proceeds instead of assuming the policy-rate move determines a commercial loan's final coupon.
Discuss a financing need →This independent summary is based on the cited source and is provided for general educational purposes only. Terms and program requirements may change.