The cost of living sparked by global events, has pushed inflation to 4.3%.
Both RPI and RPIX - which excludes mortgage interest - have risen to 4.3%.
This is higher than the current rates in both Jersey and the UK, which are both 2.8% at June '26.
Kerosene, used for heating fuel, was one of the key drivers of Guernsey's 0.3% increase in inflation over Quarter 2, 2026.
This increase can be directly attributed to the Iran conflict and the pressure on crude oil prices.
Other significant inflation drivers include housing costs like mortgage interest and home insurance premiums.
All the components of the inflation basket increased between March and June, with only clothing and footwear dipping.
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