Sydney motorists are set to receive up to $520 in toll relief following the New South Wales government's decision to slash the toll cap for 12 months.

The measure forms a central component of the state's cost-of-living relief package announced in Tuesday's budget.

Treasurer Daniel Mookhey confirmed the policy shift, which aims to provide immediate financial breathing room for car owners and public transport users.

The cap reduction applies across the state's toll network, directly lowering the maximum annual expenditure for frequent commuters.

The move aligns with broader fiscal efforts to mitigate household spending pressures.

While the federal budget has recently triggered market activity regarding fiscal policy shifts, this state-level intervention focuses specifically on transportation costs, a significant line item for urban households.