Prenuptial & Postnuptial Agreements
- Rebecca LaRocque
- May 17
- 2 min read
Updated: May 23
Marital agreements are often misunderstood as adversarial or transactional. In reality, many couples pursue these agreements for the opposite reason: to create transparency and reduce uncertainty surrounding finances, property, and future obligations.
A properly drafted agreement can:
protect premarital assets,
address business ownership interests,
define financial expectations,
clarify debt responsibility,
preserve family wealth,
and reduce future litigation exposure.
The process should be approached carefully, thoughtfully, and with full financial disclosure from both parties.
What Is the Difference Between a Prenup and a Postnup?
Prenuptial Agreements
A prenuptial agreement is entered before marriage and establishes how certain financial matters will be handled during the marriage or in the event of divorce or death.
These agreements are commonly used to address:
premarital property,
business ownership,
investment accounts,
real estate,
inheritance expectations,
debt allocation,
and spousal maintenance considerations.
Postnuptial Agreements
A postnuptial agreement is entered after marriage.
Postnups may be used when:
financial circumstances change,
a business grows significantly,
one spouse receives an inheritance,
marital issues arise,
or the parties want to formally restructure financial expectations during the marriage.
Like prenups, postnups must be carefully drafted to maximize enforceability under Illinois law.
Common Issues Addressed in Marital Agreements
Business Ownership & Professional Interests
Marital agreements are frequently used to protect:
closely held businesses,
professional practices,
ownership interests,
partnership stakes,
future business growth,
and investment interests.
For business owners and professionals, early planning can significantly reduce future valuation disputes and litigation exposure.
Asset & Debt Allocation
Agreements often address:
premarital assets,
future earnings,
retirement accounts,
real estate,
student loans,
credit obligations,
and responsibility for future debt.
Clear financial definitions reduce ambiguity later.
Spousal Maintenance Provisions
Prenuptial and postnuptial agreements may also address:
whether maintenance will apply,
limitations on maintenance,
review provisions,
or agreed financial structures in the event of divorce.
These provisions must comply with Illinois law and public policy considerations.
LaRocque Law’s Approach
Strategic Planning With Long-Term Perspective
Marital agreements should not feel rushed, overly aggressive, or one-sided.
LaRocque Law approaches prenups and postnups with a focus on:
careful drafting,
practical risk analysis,
full financial transparency,
and long-term enforceability.
The firm regularly assists clients with:
drafting new agreements,
reviewing proposed agreements,
negotiating revisions,
and evaluating enforceability concerns under Illinois law.
Well-structured agreements often reduce future uncertainty while preserving flexibility for the realities of modern relationships and evolving financial circumstances.
Illinois Prenup & Postnup Considerations
Illinois marital agreements are governed primarily by the Illinois Uniform Premarital Agreement Act and related Illinois case law.
Enforceability may depend on factors such as:
voluntary execution,
timing,
adequate financial disclosure,
fairness considerations,
independent legal review,
and the specific language of the agreement itself.
Poorly drafted or rushed agreements are significantly more vulnerable to future challenges.
-Rebecca LaRocque, Founder of LaRocque Law
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