Free · Idaho · Current law
Based on Idaho's official Income Shares formula. Enter both parents' incomes and get an estimate in under a minute.
Before taxes — wages, self-employment, bonuses
A best estimate is fine for now
Taxes, mandatory retirement, union dues…
Work or school related
Estimated monthly support
The other parent pays you, the parent with primary timesharing.
Estimate only — based on a simplified reading of Idaho Rules of Family Law Procedure, Rule 120 (effective July 1, 2024). A judge can deviate. Not legal advice.
Get a plain-English copy of this estimate, the numbers used, and a short checklist for what to review before relying on it.
Idaho's child support is calculated using the Income Shares model. First, each parent's gross income is determined, and then adjustments are made to arrive at their Guidelines Income. These individual incomes are combined to establish the Total Guidelines Income. The Basic Child Support Obligation is then found using state-provided schedules based on the Total Guidelines Income and the number of children. This obligation is then prorated between the parents based on their respective Guidelines Income. Further adjustments are made for child care, health insurance, and other specific expenses.
A substantial change in either parent's income — voluntary or involuntary — can trigger a modification.
Changes in childcare costs or the children's health insurance premiums directly adjust the support amount.
If the custody schedule changes significantly, support can be recalculated under Idaho guidelines.
Medical conditions, disabilities, or educational needs can justify a departure from the guideline amount.
Common questions
An uncontested divorce in Idaho can be finalized in as little as 21 days after the divorce petition is served, but typically takes 30-90 days. Contested divorces, involving disputes over issues like property or child custody, can take several months to years to resolve.
While it is not legally required to have a lawyer for a divorce in Idaho, it is highly recommended. A lawyer can help protect your best interests, especially in contested cases, situations involving domestic abuse, child abuse, or significant power imbalances.
Yes, Idaho is both a no-fault and fault-based divorce state. A no-fault divorce can be granted based on 'irreconcilable differences,' meaning there are substantial reasons for not continuing the marriage. Fault-based grounds such as adultery or extreme cruelty are also available but less commonly used.
Idaho follows community property laws (Idaho Code § 32-906), meaning that most assets and debts acquired during the marriage are presumed to be owned equally by both spouses and are generally split 50/50. However, courts have discretion to make an 'equitable' division based on specific circumstances (Idaho Code § 32-712).
Yes, during a divorce in Idaho, you have the option to change your last name back to your maiden name. This must be included in the decree of divorce. There is no requirement to change your name, and you can choose to keep your married name if you wish.
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