The Divorce Act ( federal law) applies to married couples and Family Law Act ( Alberta law) can be used if you are married or not. Both Acts deal with child support.  The amount of child support is set by Alberta Child Support Guidelines under the Family Law Act. 
Parents have to pay a table amount as well as extraordinary expenses ( childcare, tutoring, healthcare, post-secondary education expenses, insurance premiums, extracurricular activities, ext)

Parenting Arrangements:

• Sole Custody- children live with one parent more than 60% of the time in a year
• Shared Custody- children live with each parent at least 40% of the time over the year
• Split Custody- one child lives with one parent at least 60% of the time, and other child lives with the other parent at least 60% of the time

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Some Facts:

• Child Support in Alberta is mandatory, Spousal Support is NOT
• Father has legal parenting rights to  children even if he is not legally married to the mother
• Time with your child CAN NOT be denied even if you are late with the child support payments. 
• Common-law couples DO NOT have same rights as legally married couples.

AB Child Support table