0 1/8% Index-linked Treasury Gilt 2031

Bond pricer · ISIN GB00BNNGP551 · report 30 Oct 2026

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How to read this gilt

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Clean price is what the gilt costs before the interest already earned; dirty price adds that accrued interest and is the figure you actually pay. Accrued runs from the last coupon on an actual/actual day count, so it resets on the coupon date.

Gross redemption yield is the yield to maturity on the DMO's semi-annual convention — the number every gilt table quotes. Net figures deduct income tax at each band from the coupons and leave the capital gain alone, because gilts are CGT-exempt; the tax-equivalent column is what a taxable deposit would need to match.

An index-linked gilt's real figures come from the DMO's index ratio, and its nominal figures are that ratio applied to the real ones — so they move with published inflation rather than a forecast.

Prices

Bid price (clean)
£95.40
Offer price (clean)
£95.53
Mid price (clean)
£95.47
Bid price (dirty)
£137.05
Offer price (dirty)
£137.23
Mid price (dirty)
£137.14

Settlement

Settlement date
2026-11-02
Days accrued
84
Accrued interest
£0.029
Index ratio (D10B)
1.43612

Key metrics

Real yield (annual-compounded)
1.11%
Implied RPI growth
3.59%
Net yield at 40% tax (annual-compounded)
1.05%
Running yield
0.13%
Modified duration
4.73
Macaulay duration
4.78
Benchmark yield (continuously compounded annual)
1.25%
Vs fitted curve
−15 bp
Reference yield (convention not recorded)
—
Tenor band
2-5Y

Bond details

Ticker
TR31
ISIN
GB00BNNGP551
Coupon
0.125%
Type
Index-linked
Matures
10 Aug 2031
First issued
2021-01-28
Next ex-dividend
2027-02-01
Next coupon
2027-02-10
Previous coupon
2026-08-10
Category
—
Amount in issue (£m)
18836

Net redemption yield by tax band

Income tax band Net redemption yield (annually compounded) Tax-equivalent yield (annually compounded)
0% 1.11% 1.11%
20% 1.08% 1.35%
22% 1.08% 1.38%
40% 1.05% 1.76%
42% 1.05% 1.81%
45% 1.05% 1.91%
47% 1.05% 1.97%
48% 1.04% 2.01%