State alimony comparison
Recommended workflow
Start with the legal differences below, run one shared estimate scenario, then open each state guide for the detailed framework courts may apply.
Use this side-by-side data view as a starting point, then review the linked state law guides and calculators for deeper planning context.
| Factor | Illinois | Pennsylvania |
|---|---|---|
| Support term | maintenance | alimony |
| Formula profile | statutory-net | statutory-net |
| Property system | equitable | equitable |
| Legal framework | Temporary maintenance may be awarded during the divorce proceeding to address immediate financial needs. Post-divorce maintenance is governed by 750 ILCS 5/504, which establishes presumptive net-income formulas, duration schedules, and deviation factors for final awards. | Spousal support and APL are generally determined under statewide guideline formulas that focus on net-income differences between the parties. Post-divorce alimony is governed by 23 Pa.C.S. § 3701 and is awarded only after courts evaluate statutory factors rather than relying on a fixed formula. |
| Statute citation | 750 ILCS 5/504 (Illinois Marriage and Dissolution of Marriage Act) | 23 Pa.C.S. §§ 3701-3707; Pennsylvania Rules of Civil Procedure 1910.16-4 and 1910.16-6 |
Best for
Relocation planning, negotiation prep, and state-by-state estimate checks.
Use with
Illinois and Pennsylvania calculators for same-fact estimates.
Remember
Support outcomes still depend on judge discretion, facts, and local procedure.
Same-facts estimate
Use the same income and marriage facts to see how the planning estimate changes between Illinois and Pennsylvania. This is educational, not a court prediction.
Statutory guideline estimate: 33.33% of payer net annual income minus 25% of recipient net annual income, capped so the recipient's net income plus maintenance does not exceed 40% of the parties' combined net income.
$1,500/mo
Planning range: $1,200-$1,800/mo
Duration: About 9 years
Temporary-support educational estimate using Pennsylvania's net-income guideline structure: 33% of payer monthly net income minus 40% of recipient monthly net income when there are no dependent children; Pennsylvania uses lower 25% and 30% percentages when dependent children are involved.
$1,475/mo
Planning range: $1,180-$1,770/mo
Duration: Medium to long marriage
Illinois: Illinois uses statutory maintenance guidelines after the court first decides that maintenance is appropriate. Maintenance is not automatic. If guideline maintenance applies, the amount is calculated from the parties' net annual incomes, and the recipient's income after maintenance may not exceed 40% of the parties' combined net income. Pennsylvania: Pennsylvania guideline spousal support and APL are typically calculated using net-income percentages: 33% of payer net income minus 40% of recipient net income when there are no dependent children (25%/30% when dependent children are involved). Post-divorce alimony has no mandatory formula and instead requires courts to balance statutory factors under § 3701.
Illinois: Illinois uses statutory duration multipliers based on the length of the marriage at the time the action is commenced. For marriages under 20 years, the duration is calculated by multiplying the marriage length by a factor that increases with marriage length. For marriages of 20 years or more, the court may order maintenance for a period equal to the length of the marriage or for an indefinite term. Pennsylvania: Pennsylvania has no fixed statutory duration formula for post-divorce alimony. The court determines duration as reasonable under the circumstances and may order alimony for a definite or indefinite period. Spousal support and alimony pendente lite generally last only during separation or while the divorce case is pending.
Illinois: Maintenance may be modified upon a substantial change in circumstances unless the award is expressly non-modifiable. Courts review financial developments, employment changes, retirement, and other relevant factors when evaluating modification requests. Pennsylvania: Most Pennsylvania alimony awards may be modified upon a substantial and continuing change in circumstances unless the parties agreed otherwise. Courts evaluate financial changes affecting need, ability to pay, or overall fairness.
Illinois uses statutory maintenance guidelines that rely primarily on the parties' net incomes. For many cases, courts calculate maintenance using a formula established in 750 ILCS 5/504, while retaining authority to deviate when application of the guideline would be inappropriate. The statute also provides duration multipliers tied to the length of the marriage.
Eligibility: A spouse may qualify for maintenance when the statutory analysis demonstrates a need for support and the circumstances justify an award. Courts examine income, property distribution, earning capacity, future opportunities, and the standard of living established during the marriage. Qualification is determined under the statutory factors rather than income disparity alone.
Pennsylvania distinguishes between spousal support, alimony pendente lite (APL), and post-divorce alimony. Pre-divorce support is commonly calculated using statewide support guidelines based on the parties' net incomes, while post-divorce alimony is determined through statutory factors and judicial discretion. The primary purpose of alimony is to address reasonable economic needs after divorce when property division alone is insufficient.
Eligibility: A spouse seeking post-divorce alimony must demonstrate financial need and show that equitable distribution alone is insufficient to meet reasonable expenses. Courts evaluate income, earning capacity, assets, liabilities, age, health, and contributions made during the marriage. Eligibility depends on the totality of circumstances rather than marriage length alone.
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.
No. SettleCompass comparison pages are educational planning resources only and do not replace advice from a licensed family law attorney.
Yes. State formulas, income caps, duration rules, statutory factors, and judge discretion can produce different outcomes from the same basic facts.
Use state-specific calculator pages to model the same income and marriage-length assumptions across both states.
