Julia Rosenbloom, tax partner at Smith & Williamson, has previously spoken about potential changes she thought Mr Sunak may consider.
Speaking exclusively to Express.co.uk, she said: “As we begin preparing ourselves for The Budget next year, we are expecting to see some aspects of an IHT reform document published earlier this year come into effect.
“In particular, we anticipate the potential abolition of Potentially Exempt Transfers (PET), essentially the ability to make a gift of unlimited value that is exempt from Inheritance Tax (IHT) if you live for another seven years.
“Coupled with a probable increase in the rate of Capital Gains Tax, this would represent a significant restriction on people passing on their wealth, making it much more expensive to gift to their children or grandchildren.”
Pension tax relief is also something which Ms Rosenbloom identified could be set to change.