It would mean increasing the amount of people in the military, to reach 90,000, including thousands more being called to compulsory military service every year. There would also be more fighter jets, surface ships and a total of six submarines.
But the political parties are not in agreement on everything, and this could mean serious disruption or delay.
The report's suggestions are framed as a reaction to a worsening security situation in Sweden's neighbourhood, most notably Russia's takeover of Crimea in 2014. The parties' report fears the Russian government could act in an unpredictable way with little warning. The preparations also take account of long-term threats linked to climate change.
Listen to our full report to hear more.