Bond
Public
U.S. Treasury 4.88% Bond due Aug 15, 2045
CUSIP 912810UN6 · 19-Year 10-Month · coupon paid semiannually
Yield to maturity i
5.45%
annualized · YTW equals YTM (non-callable)
Current yield i
5.23%
Coupon i
4.88%
Modified duration i
11.9 yr
Convexity i
189.36
Indicative price i
93.274
indicative model price, not a tradable quote
real auctioned at 104.786 · 4.51% high yield (Oct 22, 2025) · reopening · at issuance, not a current price
Settles i
Oct 15, 2026
priced to this date (T+1 basis)
Total to settle i
94.082
per 100 par (clean 93.274 + accrued 0.808)
· ≈ $9,408.22 per $10,000 face
Next coupon i
Feb 15, 2027
2.438 per 100 · $243.75 per $10,000 face
Cash-flow timeline
issue → maturity · each tick is a coupon · ◆ todayTerms fetched
| Type | Bond Coupon-paying, 20 or 30 years. Interest every six months. |
| Term i | 19-Year 10-Month |
| Coupon i | 4.88% (semiannual) |
| Maturity i | Aug 15, 2045 |
| Issue date | Oct 31, 2025 |
| Par value i | 100.00 |
| Callable | No |
| Amount outstanding i | $31.6B |
| Credit | AAA·Govt |
Computed metrics computed
Clean price i
93.274
Dirty price i
94.082
Accrued interest i
0.808
per 100 par
Yield to maturity i
5.45%
Yield to worst i
5.45%
Current yield i
5.23%
Modified duration i
11.9 yr
Macaulay duration i
12.2 yr
Convexity i
189.36
DV01 i
0.1116
per 100 par
indicative, matrix-priced off today's par curve.
Remaining cash flows
38 payments, discounted off today's curve| Date | Cash flow | Discount factor | Present value |
|---|---|---|---|
| Feb 15, 2027 | 2.438 | 0.98560 | 2.402 |
| Aug 15, 2027 | 2.438 | 0.96405 | 2.350 |
| Feb 15, 2028 | 2.438 | 0.94116 | 2.294 |
| Aug 15, 2028 | 2.438 | 0.91775 | 2.237 |
| Feb 15, 2029 | 2.438 | 0.89484 | 2.181 |
| Aug 15, 2029 | 2.438 | 0.87303 | 2.128 |
| Feb 15, 2030 | 2.438 | 0.85155 | 2.076 |
| Aug 15, 2030 | 2.438 | 0.83101 | 2.026 |
| Feb 15, 2031 | 2.438 | 0.81050 | 1.976 |
| Aug 15, 2031 | 2.438 | 0.79070 | 1.927 |
| Feb 15, 2032 | 2.438 | 0.77070 | 1.879 |
| Aug 15, 2032 | 2.438 | 0.75112 | 1.831 |
| Feb 15, 2033 | 2.438 | 0.73165 | 1.783 |
| Aug 15, 2033 | 2.438 | 0.71279 | 1.737 |
| Feb 15, 2034 | 2.438 | 0.69418 | 1.692 |
| Aug 15, 2034 | 2.438 | 0.67631 | 1.649 |
| Feb 15, 2035 | 2.438 | 0.65848 | 1.605 |
| Aug 15, 2035 | 2.438 | 0.64127 | 1.563 |
| Feb 15, 2036 | 2.438 | 0.62410 | 1.521 |
| Aug 15, 2036 | 2.438 | 0.60744 | 1.481 |
| Feb 15, 2037 | 2.438 | 0.59079 | 1.440 |
| Aug 15, 2037 | 2.438 | 0.57466 | 1.401 |
| Feb 15, 2038 | 2.438 | 0.55857 | 1.362 |
| Aug 15, 2038 | 2.438 | 0.54303 | 1.324 |
| Feb 15, 2039 | 2.438 | 0.52754 | 1.286 |
| Aug 15, 2039 | 2.438 | 0.51258 | 1.249 |
| Feb 15, 2040 | 2.438 | 0.49767 | 1.213 |
| Aug 15, 2040 | 2.438 | 0.48321 | 1.178 |
| Feb 15, 2041 | 2.438 | 0.46888 | 1.143 |
| Aug 15, 2041 | 2.438 | 0.45506 | 1.109 |
| Feb 15, 2042 | 2.438 | 0.44128 | 1.076 |
| Aug 15, 2042 | 2.438 | 0.42800 | 1.043 |
| Feb 15, 2043 | 2.438 | 0.41477 | 1.011 |
| Aug 15, 2043 | 2.438 | 0.40202 | 0.980 |
| Feb 15, 2044 | 2.438 | 0.38933 | 0.949 |
| Aug 15, 2044 | 2.438 | 0.37703 | 0.919 |
| Feb 15, 2045 | 2.438 | 0.36485 | 0.889 |
| Aug 15, 2045 | 102.438 | 0.35313 | 36.173 |
| Sum of present values | 94.082 |
Present values sum to the dirty price; subtract 0.808 accrued to get the clean price.
Rate sensitivity i
approximate, from duration & convexity| Parallel rate move | Approx. price change | Approx. indicative price |
|---|---|---|
| -200 bp (-2.0%) | +27.5% | 118.925 |
| -100 bp (-1.0%) | +12.8% | 105.216 |
| +100 bp (+1.0%) | -10.91% | 83.098 |
| +200 bp (+2.0%) | -19.93% | 74.688 |
Illustrative only: a parallel shift of the whole curve, estimated from modified duration (11.9 yr) and convexity. Real moves are rarely parallel; this is not a forecast.
What to know
Key risks
- Interest-rate risk. If market yields rise, the price falls, and more so the longer the maturity. See the rate-sensitivity table above.
- Inflation risk. Fixed coupons lose purchasing power if inflation rises. TIPS are designed to offset this; nominal bills, notes and bonds are not.
- Reinvestment risk. Coupons, and principal at maturity, may have to be reinvested later at lower rates than today's.
- Liquidity / price risk. Selling before maturity means taking the market price at that time, which can be above or below the indicative value shown here.
Tax
Interest on U.S. Treasuries is subject to federal income tax but is generally exempt from state and local income tax.
How Treasuries are bought
New issues are sold at auction (including directly via TreasuryDirect.gov); outstanding securities trade on the secondary market through a broker. This site is for research only and does not sell or recommend securities.
General information only, not tax, legal or investment advice.
Benchmark yield, past year
All tenors →Par yield of the nearest benchmark tenor, the main input to this bond's price.