Treasurer Joe Hockey wants to take upon himself the power to set superannuation contributions, introducing a bill that would give him control over the rate rather than Parliament.

Superannuation contributions at present are set to climb from 9.5 per cent of salary to 12 per cent over the next five years. The Coalition wants to delay the next scheduled 0.5 percentage point increase for three years to ease pressure on the budget.

Rushed through the House of Representatives on Monday as part of the mining tax repeal bill, a new provision would give the Treasurer the power to adjust or delay adjustments to the rate without further reference to Parliament.

A spokeswoman for Mr Hockey said the measure would give businesses "certainty" about what would happen to contribution rates, making them no longer subject to votes in the Senate.