Liz Truss is set to challenge the chancellor by publishing an alternative Budget.
The Growth Commission, the think tank set up by the former prime minister, will release a report called The growth budget a week before the chancellor delivers his Autumn Statement on 22 November.
It is expected to propose policy on corporation tax, income tax and national insurance – including how the “tourism tax” could be dropped by bringing back VAT-free shopping.
Truss has also said 500,000 homes need to be built a year and suggested environmental protections could be torn up to encourage building.
The announcement of the alternative Budget comes just over a year after Truss’s disastrous mini-Budget, which spooked the markets and punched a £30bn hole in government finances.