Missouri Spousal Support Calculator

Updated for Senate Bill 562 (Effective Aug 28, 2025) – Statutory Duration Caps & Maintenance Types

Income Information

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Marriage Details

Please enter a valid duration between 0-100 years
Please enter a valid past date
Marriage less than 7 years? (SB 562 Short-term)
Marriage 20+ years?
Is recipient custodial parent?

Missouri-Specific Factors

Domestic violence involved?
Fault-based divorce?

Needs and Resources

Earning Capacity

Recipient sacrificed career?
Recipient has disability?

Missouri Spousal Maintenance (SB 562)

Maintenance Type

Monthly Amount

Duration (Statutory Cap)

Judicial Range


Disclaimer: Reflects SB 562 (2025). Not legal advice.

Missouri Maintenance Case Laws

Davis v. Davis (2020)
603 S.W.3d 854 (Mo. Ct. App. 2020)

Cohabitation with any adult housemate can reduce need; payor must prove financial interdependence. Still relevant under SB 562.

In re Marriage of Hanks (2012)
370 S.W.3d 300 (Mo. Ct. App. 2012)

Long-term marriages (25 years) – standard of living remains factor, but now capped under SB 562 duration limits.

C.R.S. v. J.M.S. (2023, Mo. App. WD)
668 S.W.3d 241 (Mo. App. 2023)

Pre-SB 562 case affirming that permanent maintenance may be modified upon showing substantial change; SB 562 now provides statutory caps for retroactive modification.

Modifying Maintenance Under SB 562

Effective Aug 28, 2025: Maintenance orders may be modified to comply with new durational limits. Grounds: retirement, cohabitation, or change in income.

File motion for modification under §452.370 as amended.
Presumptive retroactivity applies to indefinite maintenance.

Missouri Maintenance FAQs

What did SB 562 change?

SB 562 (2025) introduced statutory duration caps: Bridge (≤2y), Rehabilitative (≤4y), Durational (≤50% of marriage length, max 15y). It eliminated permanent maintenance except in rare disability cases.

Is there a formula for amount?

No fixed formula. Judges consider income, needs, marriage length, and statutory factors. Amount is discretionary but duration is now capped by law.

How does marriage length affect duration?
  • <7 years: Bridge (max 2y) or Rehabilitative (max 4y)
  • 7-17 years: Durational (max 50% of marriage)
  • 17+ years: Durational (max 50% of marriage, but cannot exceed 15 years)
Can I modify an old permanent maintenance order?

Yes. SB 562 is presumptively retroactive. You can petition for modification to apply the new duration caps.

Does cohabitation terminate maintenance?

Not automatically, but payor may seek modification under Davis v. Davis and SB 562 if cohabitation reduces need.