Shadow chancellor Rachel Reeves said ministers need to "act like firefighters rather than arsonists".
The chancellor caved in to mounting pressure over the cost of living crisis by announcing a windfall tax on oil and gas firms.
Chancellor under pressure to take urgent action on the cost-of-living crisis as official figures showed inflation soaring to a 40-year high.
Inflation shot up to 9 per cent last month - the highest level since 1982.
The announcement came as a poll showed the chancellor's popularity with Tory activists has plummeted.
The shadow chancellor said the Conservatives had become the “party of high taxation" in her response to the spring statement.
Rishi Sunak should have adopted Labour's plan to remove VAT on fuel bills and impose a windfall tax.
PM brazens it out on his tax rise, as Starmer's shadow chancellor searches for an alternative.
‘No More Mr Nice Guy’ as chancellor woos Tories with mix of charm and steel
Emily Thornberry is the latest shadow cabinet minister to go on the offensive against the PM’s deal