Alabama Child Support Laws (2026): Guidelines & Calculator

Alabama calculates child support using the Income Shares Model under Rule 32 of the Alabama Rules of Judicial Administration. Both parents' adjusted gross incomes are combined, a base obligation is looked up in the Schedule of Basic Child-Support Obligations, and each parent pays a share proportional to their income. Use the Alabama child support calculator below to estimate a guideline amount, or open the Alabama child support calculator to run a full scenario.

Alabama's child support laws are governed primarily by Rule 32 of the Alabama Rules of Judicial Administration. The state uses an Income Shares Model to determine how much each parent should contribute. This approach estimates how much parents would have spent on their children if the family remained intact, then divides that amount proportionally based on each parent's income.

The Alabama Department of Human Resources (DHR), Child Support Enforcement Division (CSED) handles enforcement and collection. Title 30, Chapter 3 of the Alabama Code provides additional statutory authority for child custody and support matters.

How Child Support Is Calculated in Alabama

Alabama's child support calculation follows a structured process under Rule 32. Both parents' incomes factor into the final amount, and the court uses a standardized schedule to determine the base obligation.

Here is how the calculation works step by step:

1. Determine each parent's gross monthly income. This includes wages, salaries, commissions, bonuses, self-employment income, pensions, Social Security benefits, unemployment benefits, and most other income sources.
2. Combine both parents' adjusted gross incomes to find the total family income figure.
3. Look up the base obligation in the Schedule of Basic Child-Support Obligations (Appendix to Rule 32) based on the combined income and number of children.
4. Calculate each parent's percentage share by dividing their individual income by the combined total.
5. Add adjustments for health insurance premiums, work-related childcare costs, and extraordinary expenses.
6. Apply each parent's percentage to the adjusted total obligation to determine their individual share.

Parents use Form CS-42 (Child Support Obligation Income Statement/Affidavit) to document their income and complete the calculation.

What Counts as Gross Income

Under Rule 32(B), gross income includes virtually all income sources:

• Salaries, wages, and commissions
• Bonuses and overtime pay
• Self-employment income (minus ordinary business expenses)
• Severance pay
• Pensions and retirement benefits
• Interest and dividend income
• Trust income and annuities
• Capital gains
• Social Security benefits
• Workers' compensation benefits
• Unemployment insurance benefits
• Veterans' benefits
• Gifts and prizes of recurring value
• Rental income

Excluded from gross income: Public assistance benefits (TANF, food stamps, SSI) and child support received for children from other relationships.

If a parent is voluntarily unemployed or underemployed, the court may impute income based on that parent's recent work history, qualifications, and prevailing job opportunities in the area.

The Schedule of Basic Child-Support Obligations

The schedule (found in the Appendix to Rule 32) provides presumptive child support amounts based on combined adjusted gross income and the number of children. The chart covers combined monthly incomes from $0 to $30,000 (expanded from $20,000 by the Alabama Supreme Court order effective May 1, 2022).

For combined adjusted gross incomes exceeding $30,000 per month, the court has discretion to determine an appropriate amount based on the children's needs and the family's standard of living.

A shaded area in the lower income ranges of the schedule reflects the self-support reserve (SSR), which protects a paying parent's ability to maintain a minimum standard of living. Under Rule 32(C)(5)(b), the SSR is $981 per month. When child support would push the paying parent below this threshold, the calculation triggers an adjustment.

Sample Monthly Obligations

The following table shows approximate monthly child support obligations at selected combined income levels based on the current schedule:

These are base amounts before adjustments for health insurance, childcare, and other factors. Actual obligations vary. Refer to the official schedule for precise figures.

Shared Custody Rules (2023 Amendment)

Effective June 1, 2023, Alabama amended Rule 32(C) to add paragraph (7), which created the Shared 50% Physical Custody Adjustment (SPCA). This change applies to all new actions filed or proceedings started on or after June 1, 2023.

The SPCA applies when a court order provides that each parent has physical custody of the child approximately 50% of the time. Key features of the shared custody calculation include:

• A 150% multiplier is applied to the basic child support obligation. This multiplier accounts for the fact that maintaining a child in two separate households costs roughly 50% more than a single household due to duplicated expenses like housing, utilities, and food.
• Each parent's share is calculated based on their proportion of the combined income.
• The lower-earning parent's share is subtracted from the higher-earning parent's share. The higher-earning parent pays the difference.
• Parents use Form CS-42-S (rather than the standard CS-42) to complete the shared custody worksheet.

This adjustment must be based on a court order. Informal agreements between parents about sharing time equally do not qualify for the SPCA calculation.

How to Modify Child Support in Alabama

Either parent may petition to modify an existing child support order when there has been a material change in circumstances that is substantial and continuing. The petition is filed with the circuit court that issued the original order.

The 10% Rule

Under Rule 32, if the difference between the existing child support order and the amount calculated under the current guidelines is more than 10%, a rebuttable presumption arises that modification is warranted. This means the burden shifts to the opposing parent to show why the order should not change.

However, a court retains discretion in both directions:

• The court can modify support even when the 10% threshold is not met, if the petitioner proves a material change in circumstances.
• The court can deny modification even when the 10% threshold is met, if applying the guidelines would be manifestly unjust or inequitable.

Common Grounds for Modification

• Significant increase or decrease in either parent's income
• Job loss, disability, or involuntary unemployment
• Changes in the child's needs (medical conditions, educational requirements)
• Changes in custody or parenting time arrangements
• Changes in health insurance premiums or work-related childcare costs
• Incarceration of the paying parent

If you receive services through the Child Support Enforcement Division, you can request a review and adjustment through their office. Otherwise, you must file a Petition for Modification with the court.

Note that existing orders do not change automatically when new guidelines take effect. A parent must affirmatively file for modification to take advantage of updated schedules.

Enforcement and Penalties for Non-Payment

Alabama takes child support enforcement seriously. The DHR Child Support Enforcement Division and the courts have multiple tools to compel payment.

Enforcement Actions

Interest on Arrears

Unpaid child support in Alabama accrues interest automatically:

• Orders issued on or after September 1, 2011: Interest accrues at 7.5% per year.
• Orders issued before September 1, 2011: Interest accrues at 12% per year.

Interest is calculated on each individual missed payment from its specific due date, not on the total balance. This means arrears can grow substantially over time.

Collection Time Limit

Alabama allows enforcement of child support arrears for 20 years from the date each payment became due. Even after a child reaches adulthood, unpaid arrears remain collectible.

Parents who fall 30 days or more behind on payments should seek legal counsel immediately. Contempt of court applies when a parent willfully refuses to pay, and consequences may include fines, jail time, or both.

When Does Child Support End in Alabama?

Alabama sets the age of majority at 19 years old, and child support typically terminates when the child reaches that age. This is one year later than most other states.

Early Termination

Child support may end before age 19 if:

• The child marries (marriage automatically emancipates a minor under Alabama law)
• The child enlists in the military
• The child becomes legally emancipated by court order (available only after age 18)
• The child dies

Extended Support

Child support may continue beyond age 19 if:

• The child has a physical or mental disability that prevents self-support
• The parents agreed to extended support (such as college expenses) in their divorce agreement or settlement

Termination Is Not Automatic

Child support does not stop automatically when the child turns 19. The paying parent must file a motion to terminate support with the court that issued the original order and provide documentation that the child has reached the age of majority or that another qualifying event has occurred.

Continuing to pay without filing for termination does not create an overpayment credit. Parents should file promptly when the child reaches age 19.

Establishing Paternity in Alabama

For unmarried parents, paternity must be established before a child support order can be entered against a father. Alabama provides two methods.

Voluntary Acknowledgment

Both parents sign a Voluntary Acknowledgment of Paternity form. This is typically completed at the hospital when the child is born, but it can also be filed later with the Alabama Office of Vital Statistics at any time before the child turns 19.

Both parents must receive notice of the alternatives, legal consequences, and responsibilities that arise from signing the acknowledgment. Once signed and filed, the father's name is added to the birth certificate, and the acknowledgment serves as a legal basis for establishing a support obligation.

Court-Ordered Paternity

If parents cannot agree, either parent or the state can file a petition to establish paternity. The court may order genetic (DNA) testing, which provides greater than 99% accuracy in determining biological parentage.

Once the court establishes paternity, it must also address child support, medical support, and income withholding in the same proceeding. The court may also decide custody, visitation, and allocation of testing costs.

If you are uncertain about paternity, do not sign any acknowledgment forms until paternity is confirmed through DNA testing. Once established, paternity is extremely difficult to reverse.

Alabama Child Support Forms and Resources

The following official forms are used in Alabama child support proceedings:

All forms are available through the Alabama Court E-Forms system.

Contact Information

Alabama Department of Human Resources, Child Support Enforcement Division

• Phone: (334) 242-9300
• Website: dhr.alabama.gov
• Mailing Address: PO Box 304000, Montgomery, Alabama 36130-4000

More Alabama Laws

• Alabama Alimony Laws
• Alabama Child Custody Laws
• Alabama Divorce Laws