Businesses argue that a reopening date would allow mainland tourists to begin planning a Tasmanian holiday so there was no delay between the borders opening, and tourists arriving.

But Premier Peter Gutwein remains steadfast in his decision to wait until July before announcing a date, based on advice from public health officials in Tasmania, rather than federal advice.

Robert Ravens, of Bridestowe Estate, said if the government was planning to reopen the state in September or October, then it should make the announcement now to provide clarity and certainty for tourism businesses.

"It takes people weeks, months to plan a visit to Tasmania. It's not something that you just do spontaneously anymore and land in Hobart or Launceston, you can't quickly plan for airfare, car hire, accommodation. Without a date, none of that can happen. It's another three months lost," he said.

"If we know September is a firm date now, then November is when people will visit. They will go into the planning cycle."

While autumn and winter were quieter times for the lavender estate, Mr Ravens said they still usually see 100 people visit per day, but this has reduced to zero.

Other tourism businesses told The Examiner they also wanted a date set now, but were concerned at a backlash in the community if they went public.

One business that chose to go public was Seahorse World at Beauty Point, which posted its concerns on Facebook.

Managing director Craig Hawkins said the continued lack of certainty was having flow-on effects to businesses throughout the state's North.

"It's getting pretty desperate for us and our prospects for much business in the next months aren't great," he said.

"Australians, as I understand it, spend $60 billion on overseas travel each year. At least a proportion of that might be redirected into the Australian economy, of which Tasmania could get a proportion. if we were opened up.

"We're looking at what the chief medical officer and deputy chief medical officer have said: there's no medical reason that the borders can't be reopened. (Health Minister) Greg Hunt was quoted yesterday as saying that it's time we got things going again."

Mr Hawkins estimated the business has lost about 95 per cent of its trade, while also having to deal with equipment breakdowns and other unforeseen costs. He said further costs in the coming months could result in the business shutting down.

Tasmania was the first state to close its borders, on March 20, followed by the Northern Territory, South Australia, Western Australia and Queensland.

NSW and some federal coalition senators have been calling on states to announce reopening dates.

Tasmanian Premier Peter Gutwein has repeatedly said a reopening date would be announced in July, and he maintained that position.

"While I understand the frustration of our tourism operators, it is important to continue to put the health and safety of Tasmanians first by taking Public Health advice as to when and what may be appropriate in terms of interstate travel," he said.

"The last thing we want in Tasmania is a second wave of cases that will force business to close again, as there is no doubt that many would not be able to reopen a second time."