Non-mandatory rules (Swedish: dispositiva regler), also called default rules, are provisions of the Swedish Companies Act (ABL) that apply unless otherwise decided, but which the company may depart from, usually through its articles of association. The opposite is mandatory rules, which apply whatever the owners agree.
One example is the pre-emptive right in a new share issue, which the articles of association can depart from. The owners can also supplement the law with a shareholders' agreement, but such an agreement only binds the parties who have signed it.

Mandatory rules are provisions of the Swedish Companies Act that cannot be contracted out of or changed.
Read more
The Swedish Companies Act (ABL) is the law that governs how limited companies are formed and run.
Read more
The articles of association are the basic rulebook that governs how a limited company operates.
Read more
A shareholders' agreement is an agreement between shareholders governing how they should act in the company.
Read more