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State alimony comparison

Montana vs New York Alimony Laws

Compare Montana and New York alimony rules, formulas, duration limits, eligibility requirements, modification standards, and court discretion.
Reviewed by SettleCompass Research TeamUpdated June 2026Comparison guide
Educational content only

Recommended workflow

Compare the rules, then test the same facts in each state.

Start with the legal differences below, run one shared estimate scenario, then open each state guide for the detailed framework courts may apply.

Test scenarioMontana lawsNew York laws

Quick Comparison

Use this side-by-side data view as a starting point, then review the linked state law guides and calculators for deeper planning context.

FactorMontanaNew York
Support termmaintenancemaintenance
Formula profileneed-basedstatutory
Property systemequitableequitable
Legal frameworkTemporary maintenance may be awarded during a dissolution or legal separation case to address immediate financial needs. Final maintenance is governed by Mont. Code Ann. § 40-4-203 and requires threshold eligibility findings before the court sets amount and duration.Temporary maintenance during divorce proceedings is calculated using statutory formulas established in Domestic Relations Law § 236(B)(5-a). Post-divorce maintenance is governed by § 236(B)(6), where courts apply statutory formulas, duration advisory ranges, and deviation factors before entering a final award.
Statute citationMont. Code Ann. § 40-4-203; Mont. Code Ann. § 40-4-208New York Domestic Relations Law § 236(B)(5-a) (temporary maintenance) and § 236(B)(6) (post-divorce maintenance)

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Relocation planning, negotiation prep, and state-by-state estimate checks.

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Montana and New York calculators for same-fact estimates.

Remember

Support outcomes still depend on judge discretion, facts, and local procedure.

Same-facts estimate

Compare estimated support with one scenario

Use the same income and marriage facts to see how the planning estimate changes between Montana and New York. This is educational, not a court prediction.

Montana

Conservative educational estimate based on statutory eligibility, reasonable need, ability to pay, income disparity, marriage length, marital standard of living, property division, earning capacity, education or training needs, age, health, and Montana statutory factors; no mandatory statewide formula applies.

Lower

$1,400/mo

Planning range: $910-$1,890/mo

Duration: Medium to long marriage

Montana relies heavily on court discretion or limited eligibility rules, so this estimate should be treated as a broad planning range.

New York

Guideline maintenance estimate using New York's higher formula: 30% of payer income minus 20% of recipient income, capped so the recipient does not receive more than 40% of combined income after maintenance. If the maintenance payer is also the noncustodial parent paying child support, New York uses a lower formula: 20% of payer income minus 25% of recipient income.

Moderate

$2,000/mo

Planning range: $1,600-$2,400/mo

Duration: About 3 years

Key Differences

Calculation

Montana: Conservative educational estimate based on statutory eligibility, reasonable need, ability to pay, income disparity, marriage length, marital standard of living, property division, earning capacity, education or training needs, age, health, and Montana statutory factors; no mandatory statewide formula applies. New York: New York uses statutory guideline formulas for temporary and post-divorce maintenance on the payor's income up to the statutory income cap. The formulas are presumptive guideline calculations, but courts may adjust or deviate if the guideline amount is unjust or inappropriate after considering statutory factors. Maintenance above the income cap is discretionary.

Duration

Montana: Montana has no fixed statutory duration formula. Maintenance may be temporary during the case, rehabilitative or transitional for a defined period, or longer-term where need, age, health, disability, long-term dependency, or limited earning capacity justify it. Duration depends on reasonable need, ability to pay, time needed for education or training, marriage length, property division, and the court's equitable judgment. New York: New York uses a nonmandatory advisory duration schedule for post-divorce maintenance. For marriages up to and including 15 years, guideline duration is generally 15% to 30% of the marriage length. For marriages over 15 years and up to 20 years, guideline duration is generally 30% to 40% of the marriage length. For marriages over 20 years, guideline duration is generally 35% to 50% of the marriage length. Temporary maintenance lasts only while the divorce case is pending.

Modification

Montana: Montana maintenance may be modified under Mont. Code Ann. § 40-4-208 when statutory modification standards are met. Courts review changed circumstances affecting need, resources, employment, health, or ability to pay. New York: Maintenance orders may be modified when statutory standards for modification are satisfied, including qualifying changes in circumstances. Separation agreements and judgments may contain additional provisions affecting modification rights.

State Profiles

Montana

Montana uses the term maintenance and requires threshold findings before support may be awarded. A spouse must lack sufficient property to provide for reasonable needs and be unable to support themselves through appropriate employment, unless custodial circumstances make outside employment inappropriate. Courts do not use a mandatory statewide formula.

Eligibility: A spouse may qualify only if they lack sufficient property to provide for reasonable needs and cannot support themselves through appropriate employment. A spouse may also qualify when they are custodian of a child whose condition or circumstances make outside employment inappropriate. After threshold eligibility, courts consider financial resources, training needs, standard of living, marriage length, age, health, and the payer's ability to meet personal needs while paying maintenance.

CalculatorLaws

New York

New York uses the term maintenance for spousal support and employs statutory formulas that provide presumptive maintenance amounts in many cases. Courts begin with the statutory calculation but may deviate when the formula would be unjust or inappropriate after considering statutory factors. Maintenance awards are intended to address economic disparities created by the marriage and divorce.

Eligibility: A spouse may qualify for maintenance when there is a demonstrated economic disparity and the statutory analysis supports an award. Courts review the parties' incomes, property distribution, future earning potential, and financial circumstances. Qualification does not require fault and is evaluated under the statutory framework.

CalculatorLaws

Duration, Eligibility, and Modification

Duration Comparison

  • Montana: 0-5 years, 5-20 years, 20 years to potentially extended duration
  • New York: 0-5 years, 5-20 years, 20 years to potentially non-durational

Eligibility Comparison

  • Montana: A spouse may qualify only if they lack sufficient property to provide for reasonable needs and cannot support themselves through appropriate employment. A spouse may also qualify when they are custodian of a child whose condition or circumstances make outside employment inappropriate. After threshold eligibility, courts consider financial resources, training needs, standard of living, marriage length, age, health, and the payer's ability to meet personal needs while paying maintenance.
  • New York: A spouse may qualify for maintenance when there is a demonstrated economic disparity and the statutory analysis supports an award. Courts review the parties' incomes, property distribution, future earning potential, and financial circumstances. Qualification does not require fault and is evaluated under the statutory framework.

Modification Comparison

  • Montana: Montana maintenance may be modified under Mont. Code Ann. § 40-4-208 when statutory modification standards are met. Courts review changed circumstances affecting need, resources, employment, health, or ability to pay.
  • New York: Maintenance orders may be modified when statutory standards for modification are satisfied, including qualifying changes in circumstances. Separation agreements and judgments may contain additional provisions affecting modification rights.

Montana vs New York Alimony FAQ

Why compare Montana and New York alimony laws?+

Alimony rules vary by state. Comparing two states helps readers understand differences in formulas, duration ranges, eligibility rules, modification standards, and judicial discretion before deeper research.

Are these comparison pages legal advice?+

No. SettleCompass comparison pages are educational planning resources only and do not replace advice from a licensed family law attorney.

Can the same income produce different alimony estimates by state?+

Yes. State formulas, income caps, duration rules, statutory factors, and judge discretion can produce different outcomes from the same basic facts.

What to review next

Montana estimateRun the calculator with your income and marriage-length assumptions.New York estimateCompare whether the same facts produce a different planning range.Common questionsReview legal-use limits and why two states may treat support differently.

Compare Estimates With the Calculator

Use state-specific calculator pages to model the same income and marriage-length assumptions across both states.

Montana calculatorNew York calculator