The $1.3 million scheme would offer grants of up to $10,000 for business owners to help them grow their enterprises, Premier Roger Cook said ahead of the state poll on March 8.
"Our small business growth grants are about providing small businesses with a little bit of extra cash to make sure that they can undertake the sort of business development strategies that they need to continue to grow their businesses," he told reporters at a press conference on Thursday in Dawesville, 90km south of Perth.
The WA Liberal Party promised $4.7 million to fund more than 50 community groups such as playgroups, seniors' groups and emergency relief organisations if it is elected.
Experts are tipping a comfortable win for Labor, which holds 53 seats in the lower house after an unprecedented landslide victory in 2021, with the Liberals and Nationals holding three each.
WA Liberals leader Libby Mettam continued her attack on Labor over health and ambulance ramping.
"The Labor government are failing to answer simple questions around the hospital system that is clearly in crisis," she told reporters on Thursday.
 "Today, new reports that the minister for health has deflected answers away from herself ... highlights a government that have their priorities all wrong."
Ms Mettam has previously said her party would launch a royal commission into the WA health system if it won government.
Mr Cook said the hospital system was experiencing extraordinary demand due to the lack of bulk billing GPs and WA's growing population.
"A lot of people are saying, 'I can't afford to see my GP - I'm going to go to the local hospital', which means our (emergency departments) are very crowded," he said before listing where $14 billion in extra health funding had been spent.
Mr Cook also addressed WA Greens' claims his government had increased risk to the state's drinking water supply for the benefit of mining companies Alcoa and South32.
He said Alcoa was subject to one of the most robust environmental regulatory regimes of any miner.
"We have extra people on the ground to make sure that when they are undertaking mining activities in those riskier areas, that every precaution is taken to ensure that they don't represent an unnecessary or a significant risk to our drinking water catchment," he said.
Greens WA upper house candidate Jess Beckerling said Mr Cook had turned his back on the community in favour of foreign-owned mining companies.
"The Greens WA are outraged by this failure of democracy, failure to protect Western Australians' access to clean and safe drinking water and dwindling forest ecosystems," she said.
Shadow treasurer Steve Martin, who was at the press conference with Ms Mettam, said the Liberal Party's election promise costings would be released next week.
The Liberals have been repeatedly quizzed about their costings and why they were not released before early voting started on Monday.
