4¼% Treasury Gilt 2040

Bond pricer · ISIN GB00B6460505 · 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)
£87.73
Offer price (clean)
£88.00
Mid price (clean)
£87.87
Bid price (dirty)
£89.47
Offer price (dirty)
£89.74
Mid price (dirty)
£89.61

Settlement

Settlement date
2026-11-02
Days accrued
148
Accrued interest
£1.719

Key metrics

Gross yield (annual-compounded)
5.57%
DMO gross yield (semi-annual)
5.50%
Net yield at 40% tax (annual-compounded)
3.69%
Running yield
4.84%
Modified duration
10.01
Macaulay duration
10.56
Benchmark yield (continuously compounded annual)
5.55%
Vs fitted curve
−13 bp
Reference yield (convention not recorded)
—
Tenor band
10-20Y

Report vs live

live
Figure Report 30 Oct 2026 Live 02 Nov 2026, 12:20 GMT
Mid price (clean) £87.87 £88.13
Accrued interest £1.719 £1.730
Days accrued 148 149
Dirty price £89.59 £89.86
Gross yield 5.57% 5.54%
DMO gross yield (semi-annual) 5.50% 5.47%
Modified duration 10.01 10.01
Settlement 2026-11-02 2026-11-03

Prices: Hargreaves Lansdown (delayed/indicative) — the live column is a complete valuation from that capture, on the capture's own settlement; the report column is the published close.

Bond details

Ticker
T40
ISIN
GB00B6460505
Coupon
4.250%
Type
Conventional
Matures
07 Dec 2040
First issued
2010-06-30
Next ex-dividend
2026-11-26
Next coupon
2026-12-07
Previous coupon
2026-06-07
Category
Medium
Amount in issue (£m)
28569

Net redemption yield by tax band

Income tax band Net redemption yield (annually compounded) Tax-equivalent yield (annually compounded)
0% 5.57% 5.57%
20% 4.63% 5.79%
22% 4.54% 5.82%
40% 3.69% 6.15%
42% 3.60% 6.21%
45% 3.46% 6.29%
47% 3.37% 6.35%
48% 3.32% 6.38%