Idaho Alimony Calculator
Estimate spousal support and how long it lasts under Idaho Code § 32-705. Enter your numbers below for an instant estimate with a step-by-step breakdown and statute citations.
Idaho Alimony Calculator
This state publishes a guideline equation that takes a share of the payor’s income and subtracts a share of the payee’s.
Based on Idaho Code § 32-705 · Verified June 1, 2026
Idaho has no statutory alimony formula
Idaho has no statutory alimony formula, so this figure uses the AAML national guideline (30% of the payor's gross income minus 20% of the payee's, capped at 40% of combined income) purely as a ballpark. The figure below is an estimate to give you a ballpark — a Idaho judge decides the actual amount and duration using the factors listed beneath the calculator. About this method.
Enter income details to see your estimate
Eligibility: The spouse seeking maintenance must prove BOTH that they lack sufficient property to provide for their reasonable needs AND that they are unable to support themselves through employment (Idaho Code Section 32-705). There is no minimum marriage-length requirement, but failing this two-part threshold bars any award.
Factors Idaho Courts Weigh
- •The financial resources of the spouse seeking maintenance, including marital property apportioned to that spouse, and that spouse's ability to meet his or her needs independently
- •The time necessary to acquire sufficient education and training to enable the spouse seeking maintenance to find employment
- •The duration of the marriage
- •The age and the physical and emotional condition of the spouse seeking maintenance
- •The ability of the spouse from whom maintenance is sought to meet his or her own needs while meeting those of the spouse seeking maintenance
- •The tax consequences to each spouse
- •The fault of either party
How Idaho Alimony Works
- •Idaho has NO formula or percentage for the amount or duration of spousal maintenance (alimony). The court sets the amount and period it deems just after weighing the statutory factors in Idaho Code Section 32-705.
- •Maintenance is gated by an eligibility threshold: the requesting spouse must show (a) lack of sufficient property to provide for reasonable needs AND (b) inability to support himself or herself through employment. Both prongs must be met before any award is considered.
- •Fault is expressly a statutory factor in Idaho, unlike many no-fault-only states, so marital misconduct can affect both whether and how much maintenance is awarded.
- •There is no statutory duration rule; maintenance is often awarded as rehabilitative/transitional support for a limited period, with permanent maintenance reserved for long marriages or where self-support is not realistically achievable.
- •The amount figures shown here are a national illustrative model (AAML-style), not Idaho law. An Idaho court has broad discretion and may award substantially more, less, or nothing.
This is an estimate for educational purposes only, not legal advice. Alimony is highly discretionary; a Idaho judge can order a different amount or duration. Consult a licensed Idaho family-law attorney about your situation. See the official Idaho resource.
How Idaho Calculates Alimony
Idaho addresses spousal support under Idaho Code § 32-705. It uses a guideline equation that takes a percentage of the payor's gross income and subtracts a percentage of the payee's gross income, with statutory caps. The calculator above applies that equation to your figures and shows each step.
Unlike child support, alimony is one of the most discretionary areas of family law. Even in states with a guideline equation, the figure is a starting point a judge can adjust after weighing the statutory factors, the length of the marriage, and each spouse's needs and ability to pay. Treat any number here as an informed estimate, not a guaranteed award.
Key Rules in Idaho
- Idaho has NO formula or percentage for the amount or duration of spousal maintenance (alimony). The court sets the amount and period it deems just after weighing the statutory factors in Idaho Code Section 32-705.
- Maintenance is gated by an eligibility threshold: the requesting spouse must show (a) lack of sufficient property to provide for reasonable needs AND (b) inability to support himself or herself through employment. Both prongs must be met before any award is considered.
- Fault is expressly a statutory factor in Idaho, unlike many no-fault-only states, so marital misconduct can affect both whether and how much maintenance is awarded.
- There is no statutory duration rule; maintenance is often awarded as rehabilitative/transitional support for a limited period, with permanent maintenance reserved for long marriages or where self-support is not realistically achievable.
- The amount figures shown here are a national illustrative model (AAML-style), not Idaho law. An Idaho court has broad discretion and may award substantially more, less, or nothing.
How Long Alimony Lasts in Idaho
Under the AAML national guideline, duration is a share of the marriage length that rises with the length of the marriage; marriages of 20+ years may receive indefinite support. This is an illustration, not a state durational rule.
What Counts as Income
Idaho's calculation uses each spouse’s gross income — earnings before taxes, including wages, bonuses, commissions, self-employment income, and many recurring sources. Courts can also impute income to a spouse who is voluntarily unemployed or underemployed, meaning support can be based on what a spouse could earn rather than what they currently do. Use your most recent pay stubs and tax return for the most accurate estimate.
Eligibility & Modifying an Order
The spouse seeking maintenance must prove BOTH that they lack sufficient property to provide for their reasonable needs AND that they are unable to support themselves through employment (Idaho Code Section 32-705). There is no minimum marriage-length requirement, but failing this two-part threshold bars any award.
Alimony orders can usually be modified when there is a substantial change in circumstances — for example, a significant change in either spouse's income, the recipient's remarriage or cohabitation, retirement, or the payor's loss of employment. The specific rules and any non-modifiable agreements depend on your court order and Idaho law.
Frequently Asked Questions
Is this Idaho alimony calculator accurate?
It applies the Idaho guideline from Idaho Code § 32-705 to the numbers you enter, so it gives a close estimate of a typical guideline award. It is not an official court calculation — a judge can order a different amount after weighing the statutory factors.
Is alimony taxable in Idaho?
For divorces finalized after December 31, 2018, alimony is not deductible by the payor and is not taxable income to the recipient under federal law. Most states follow the federal treatment, but check Idaho's current rules for state income tax.
Does cheating affect alimony in Idaho?
It depends on the state. Some states let courts consider marital misconduct among the alimony factors, while others bar it entirely. Review Idaho Code § 32-705 and speak with a Idaho attorney about how fault is treated where you live.
Can alimony be changed later?
Usually yes. Alimony can often be modified when there is a substantial change in circumstances — such as a large change in income, the recipient's remarriage or cohabitation, or the payor's retirement — unless your order or agreement makes it non-modifiable.
Disclaimer
This calculator provides estimates for educational purposes only and is not legal advice. Alimony is highly fact-specific and discretionary; the amount and duration a Idaho court actually orders may differ significantly from any estimate here. For advice about your situation, consult a licensed Idaho family-law attorney.
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