WA’s Insurance Commission has cut payment terms from 20 days to just 24 hours for pre-approved injury treatment from next month.

The commission says it is the first motor injury and workers' compensation insurer in Australia to use the Health Industry Claims and Payments Service (HICAPS).

Customers will receive a text message with a treatment number that can be provided to their health practitioner to be entered into the HICAPS terminal to verify and initiate payment.

Treasurer Ben Wyatt says the new payment terms will make life easier for injured people and their employers.

"It will deliver payment certainty and improved cashflow for businesses, which is critical in our current environment, and facilitate early treatment following an accident,” he said.

Automated payments will simplify invoice and payment processing, enabling health practitioners to receive payment within 24 hours for pre-approved treatment and reducing the likelihood claimants will have to pay for treatment costs.

In 2018-19, the Insurance Commission paid $70 million for around 400,000 health services for 15,000 injured workers.