The Canadian Chamber of Commerce is the latest group to raise alarms about the Liberals’ proposed tax system reforms, announced mid-July.

Chamber President and CEO Perrin Beatty tweeted Tuesday criticizing the consultation’s timetable, saying that a conference call with 107 chambers of commerce on Monday concluded that Finance Canada’s 75 day consultation period for “the most radical tax changes in 50 [years] is unfair.”

Our call w 107 Chambers Mon agreed that 75 day consultation for the most radical tax changes in 50 yrs is unfair. More time needed! #cdnpoli — Perrin Beatty (@PerrinBeatty) August 22, 2017

In July, Finance Minister Bill Morneau released policy proposals that would change how private corporations in Canada are taxed.

The proposals would bring significant changes to three areas. They would tighten rules on ‘income sprinkling’, a practice that incorporated Canadians can use to distribute their income among family members for tax savings purposes. They would also affect passive income investment, and converting a private corporation’s income into capital gains.

The federal government estimates it could recoup approximately $250 million per year in revenue by addressing ‘income sprinkling’, according to Finance’s consultation paper.

Canadian doctors have been criticizing the proposals to make income sprinkling more difficult at the Canadian Medical Association annual meeting in Quebec. Doctors’ associations across the country are planning extensive lobbying against that proposal.

The federal Tories also have started to fundraise off of the issue, warning supporters Monday that the Liberals’ proposals could have serious consequences for medical care in Canada.

The Liberals, though, have said that the changes are being brought about to make the tax system more fair.

The consultation process ends October 2.