A calculator helping general practitioners work out the financial impacts of bulk-billing is the federal government's latest bid towards more affordable health care.

Announced by Health Minister Mark Butler, the calculator would show GPs how much better off they could be if they adopted a full bulk-billed model.

The Labor government tipped $7.9 billion into its plan to expand bulk-billing and said nine out of 10 GP visits would be bulk-billed by 2030.

From November 1, clinics that bulk bill every patient will receive a 12.5 per cent payment for each consultation, along with a conditional, variable payment depending on the clinic's remoteness.

The calculator will tailor income estimates based on consultation mix, current billing model, location and the proportion of patients receiving c

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