GPs call for stop to payroll tax, warning vulnerable patients will be worse off From July 1, doctors in SA general practices will be liable for payroll tax, potentially leading to increased patient fees, the end of bulk-billing, or clinic closures. Treasurer Stephen Mullighan confirms an amnesty until June, despite concerns about increased ambulance ramping and patient difficulties. RACGP and AMA are urging the government to reconsider, stating the tax will impact vulnerable patients and clinic viability. GPs are independent contractors, and the payroll tax may discourage doctors from opening practices in SA due to financial implications and uncertainty.