Key Highlights:

  • IGLT is the UK's largest gilt ETF, with around £4.2bn in assets, tracking around 70 conventional gilts.
  • Effective duration is about 7.1 years, meaning a 1 percentage point Yield move implies a roughly 7% price move.
  • Yield-to-maturity is about 4.9%, with a distribution yield near 4.5%, as at 21 August 2026.
  • IGLT was down 33.15% over five years to 25 August 2026, reflecting the 2021-23 gilt repricing.
  • Ongoing charges are 0.07%, and the fund distributes semi-annually.

The UK's largest gilt ETF has endured a torrid few years as yields climbed and prices fell. Yet the very sell-off that inflicted the pain has left behind something investors had all but given up on: a real income from UK government bonds.

The iShares Core UK Gilts UCITS ETF (LSE:IGLT) now offers a yield-to-maturity close to 5% — the flip side of a price decline that holders would rather forget.

Why This ETF Is in Focus

IGLT (LSE:IGLT) is the heavyweight of the UK gilt ETF market, with Assets under management of around £4.2bn — the largest of its kind. Its scale means it is often the default vehicle through which UK investors gain broad gilt exposure, which makes its recent journey a useful barometer for the Asset Class as a whole.

That journey has been painful on price but transformative on yield. As yields rose across 2026 — the 10-year reaching around 5% and the 30-year roughly 5.7%, its highest since 1998 — gilt prices fell. For a fund that tracks the whole conventional gilt market, that meant Capital losses. But it also reset the income on offer. The story now is about what an investor can earn from here, not what the fund has returned.

What the ETF Actually Invests In

IGLT tracks the FTSE Actuaries UK Conventional Gilts All Stocks Index, holding around 70 conventional UK Government Bonds across the Maturity range. The fund's effective duration is about 7.1 years, with an average maturity near 10.3 years.

That duration figure deserves prominence. At roughly 7.1 years, IGLT is a rate-sensitive instrument: its price will move materially when yields move. Broadly, a one percentage point change in yields implies around a 7% change in price in the opposite direction. This is not a near-cash holding; it is full-market gilt exposure with the price Volatility that entails.

On income, IGLT distributes semi-annually. Its distribution yield sits at around 4.5%, with a yield-to-maturity of about 4.9% (as at 21 August 2026). The ongoing charges figure is 0.07%.

What Is Happening in the UK Market?

The income story exists because of what the Bank of England and Inflation have done to yields. Bank Rate stands at 3.75%, held at the 29-30 July 2026 meeting on a 6-3 vote in which the three dissenters wanted a hike to 4.00%. The next decision is on 17 September 2026.

Inflation has proved sticky. CPI rose to 2.9% in the year to July 2026 (released 19 August), up from 2.6% in June, with services inflation at 3.4% and core CPI at 2.6% — all above the 2% target. Combined with concerns about the Volume of gilts the government must issue, this has kept yields elevated and, at the long end, still rising.

At the same time, investors have been rotating into fixed income: bond funds gathered around £16.7bn of net inflows year to date in 2026. For the first time in years, gilts offer a yield that competes for that money.

Performance and Income

The price record must be stated honestly. As at 25 August 2026, IGLT was down 2.17% over one year, down 3.35% over three years, and down 33.15% over five years. Those are price changes, not total returns — semi-annual coupons offset part of the decline — but the capital trajectory has been firmly negative.

The five-year loss reflects the historic 2021-23 repricing, when yields surged from near-zero. Crucially, that means the income now on offer is the reward for a difficult period already endured, not evidence of gains to come. The forward proposition is a yield-to-maturity of around 4.9% and a distribution yield near 4.5%, at a cost of 0.07% a year. That is the income story — clear-eyed about the price pain that produced it.

What Could Drive the ETF Next?

If inflation eases and the Bank of England is able to cut rates over 2027, yields could fall — and with a duration around 7.1 years, IGLT would stand to gain on price as well as continuing to pay income. That combination is what makes higher starting yields attractive for patient holders.

A continued rotation into bonds could also support prices. And even absent capital gains, a yield-to-maturity near 4.9% provides an income cushion that was simply unavailable a few years ago, giving the fund a more defensible role in a diversified portfolio.

Risks Investors Should Watch

Duration risk is paramount and worth repeating. At roughly 7.1 years, IGLT will fall further if yields keep rising, and 2026 has shown that a sell-off can persist longer than expected — the 30-year is already at a level last seen in 1998. Sticky inflation, the risk of a rate hike flagged by the MPC's hawks, and heavy gilt Supply all point to potential further pressure.

Inflation also erodes the real value of fixed coupons. And while IGLT carries minimal Credit risk as UK sovereign debt, its price risk is substantial — a point its five-year record makes vivid.

Bottom Line

IGLT's paradox is that its worst period as a price Investment has produced its best period as an income proposition. A yield-to-maturity of around 4.9%, from the UK's largest and highly liquid gilt ETF at a cost of 0.07%, is a genuine change from the near-zero yields of the recent past.

But the income comes wrapped in roughly 7.1 years of duration. That makes IGLT rate-sensitive and capable of further price falls if inflation and yields keep climbing. The income story is real — and so is the volatility that created it.