MADRID — Turning its back on fiscal austerity, the Spanish government presented a broad package of income and corporate tax cuts on Friday that are scheduled to begin before next year’s general election.

The cuts roll back some of the tax increases that Prime Minister Mariano Rajoy began putting into effect shortly after his conservative Popular Party swept to power in 2011 by winning a parliamentary majority. The next election is scheduled to take place by November 2015.

Under the plan introduced on Friday, which covers 2015 and 2016, taxpayers would pay an average of 12.5 percent less in income tax by the end of that period. Over the two years, corporate taxes would be reduced about five percentage points.

Cristóbal Montoro, Spain’s budget minister, told reporters on Friday, “The time has come to lower taxes for everybody.”