Bond Field Guide Revenu fixe. Perspective claire.
Bond Public

U.S. Treasury 3.88% Bond due May 15, 2043

CUSIP 912810TS7 · 19-Year 10-Month · coupon paid semiannually

AAA·Govt
Yield to maturity i
5.38%
annualized · YTW equals YTM (non-callable)
Current yield i
4.63%
Coupon i
3.88%
Modified duration i
11.4 yr
Convexity i
168.08
Indicative price i
83.663
indicative model price, not a tradable quote
real auctioned at 97.810 · 4.04% high yield (Jul 19, 2023) · reopening · at issuance, not a current price
Settles i
Oct 15, 2026
priced to this date (T+1 basis)
Total to settle i
85.274
per 100 par (clean 83.663 + accrued 1.611) · ≈ $8,527.45 per $10,000 face
Next coupon i
Nov 15, 2026
1.938 per 100 · $193.75 per $10,000 face

Cash-flow timeline

issue → maturity · each tick is a coupon · ◆ today
todayissued Jul 2023par 100 · May 204334 coupons remaining + principal

Terms fetched

Type Bond Coupon-paying, 20 or 30 years. Interest every six months.
Term i19-Year 10-Month
Coupon i3.88% (semiannual)
Maturity iMay 15, 2043
Issue dateJul 31, 2023
Par value i100.00
CallableNo
Amount outstanding i$29.8B
Credit AAA·Govt

Computed metrics computed

Clean price i
83.663
Dirty price i
85.274
Accrued interest i
1.611
per 100 par
Yield to maturity i
5.38%
Yield to worst i
5.38%
Current yield i
4.63%
Modified duration i
11.4 yr
Macaulay duration i
11.7 yr
Convexity i
168.08
DV01 i
0.0972
per 100 par

indicative, matrix-priced off today's par curve.

Remaining cash flows

34 payments, discounted off today's curve
DateCash flowDiscount factorPresent value
Nov 15, 20261.938 0.996501.931
May 15, 20271.938 0.975191.889
Nov 15, 20271.938 0.952711.846
May 15, 20281.938 0.929671.801
Nov 15, 20281.938 0.905991.755
May 15, 20291.938 0.884091.713
Nov 15, 20291.938 0.862141.670
May 15, 20301.938 0.841411.630
Nov 15, 20301.938 0.820711.590
May 15, 20311.938 0.800721.551
Nov 15, 20311.938 0.780711.513
May 15, 20321.938 0.760981.474
Nov 15, 20321.938 0.741341.436
May 15, 20331.938 0.722341.400
Nov 15, 20331.938 0.703391.363
May 15, 20341.938 0.685351.328
Nov 15, 20341.938 0.667361.293
May 15, 20351.938 0.649981.259
Nov 15, 20351.938 0.632641.226
May 15, 20361.938 0.615821.193
Nov 15, 20361.938 0.599101.161
May 15, 20371.938 0.582821.129
Nov 15, 20371.938 0.566571.098
May 15, 20381.938 0.550891.067
Nov 15, 20381.938 0.535251.037
May 15, 20391.938 0.520151.008
Nov 15, 20391.938 0.505090.979
May 15, 20401.938 0.490490.950
Nov 15, 20401.938 0.476010.922
May 15, 20411.938 0.462050.895
Nov 15, 20411.938 0.448140.868
May 15, 20421.938 0.434720.842
Nov 15, 20421.938 0.421350.816
May 15, 2043101.938 0.4084741.639
Sum of present values 85.274

Present values sum to the dirty price; subtract 1.611 accrued to get the clean price.

Rate sensitivity i

approximate, from duration & convexity
Parallel rate moveApprox. price changeApprox. indicative price
-200 bp (-2.0%) +26.15% 105.543
-100 bp (-1.0%) +12.24% 93.900
+100 bp (+1.0%) -10.55% 74.833
+200 bp (+2.0%) -19.43% 67.408

Illustrative only: a parallel shift of the whole curve, estimated from modified duration (11.4 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 →
4.345.145.94Jan 2026Oct 2026

Par yield of the nearest benchmark tenor, the main input to this bond's price.