Chief Pleas say only "limited, targeted changes" will be introduced for the 2027 tax year.
The proposals come alongside a swathe of other amendments to Policy and Resources' tax plans.
A business says fuel duty will need to be cut by 30p to 50p per litre to help.
The chamber's questions follow the publication of the scale of the Revenue Service backlog.
It follows the release of a report showing the service has 106,444 outstanding cases.
A plan from Guernsey's Revenue Service is aiming to clear the backlog by October 2028.
Proposals for tax reform will be debated at the States meeting starting on 30 September.
The UK could supply half of its oil and gas needs without imports if the government showed more support for the sector, an OEUK report claims.
The cuts comes into effect in April, but the largest businesses will pay higher rates to fund the changes.
