Draft Postnuptial Agreement

---
name: draft-postnuptial-agreement
task_id: trusts-estates-private-client/draft-postnuptial-agreement
description: Drafting a postnuptial agreement under Illinois law requires reviewing any prior marital agreement, reconciling financial disclosure materials with valuation information, addressing compensation units and business ownership characterization, and documenting independent counsel representation and voluntariness for enforceability.
activates_for: [planner, solver, checker]
---

# Skill: Draft Postnuptial Agreement for Kowalski Couple Under Illinois Law

## 2. Failure modes the skill is correcting

- Drafting the agreement before reading any existing marital agreement, leaving unclear whether the new document modifies, supplements, or supersedes prior allocations of property, support, or disclosure obligations
- Treating self-reported financial statements as dispositive without reconciling them to appraisal, tax, or valuation materials, which can leave material disclosure gaps and destabilize enforceability
- Failing to capture the legal treatment of compensation units, equity awards, and business interests across pre-signing, post-signing, vesting, and post-vesting periods
- Omitting the enforceability infrastructure that matters most for postnuptial agreements: fair disclosure, voluntariness, the opportunity for independent counsel, and an execution record that will withstand later challenge
- Drafting support or property provisions without tying them to the governing document set, resulting in inconsistent treatment across the agreement, disclosure schedules, and negotiation correspondence
- Writing a cover memo that summarizes the deal but does not identify unresolved drafting judgments, remaining client choices, or risks that should be confirmed before execution

## 3. Legal frameworks / domain conventions that apply

- Illinois marital-agreement enforceability principles control the drafting posture; confirm fair and reasonable disclosure, voluntariness, and absence of unconscionability under the governing Illinois authorities applicable to premarital and postmarital agreements
- Because the parties are already married, the agreement should be drafted with heightened attention to procedural fairness, full information, and clean execution formalities
- Any prior marital agreement must be addressed expressly: state whether the new agreement amends, restates, supplements, or supersedes prior provisions, and resolve any conflict rule unambiguously
- Property characterization should distinguish separate property, marital property, and contractually reallocated property, including treatment of appreciation, distributions, retained earnings, and contributions from marital effort or marital resources
- Restricted equity, options, units, profits interests, and similar compensation awards must be allocated by an agreed methodology that addresses grant, vesting, exercise, settlement, and sale events
- Financial disclosure schedules should be drafted to capture assets, liabilities, income, contingent interests, and valuation inputs in a way that matches the source materials rather than relying on a single summary number
- Independent counsel representation, or a written opportunity to obtain counsel, should be documented in the agreement to reduce later claims of overreaching or misunderstanding
- If support terms are included, define income, timing, duration, modification triggers, and any sunset mechanics consistently with the rest of the instrument and the disclosure record

## 4. Analytical scaffolds

1. Review the prior marital agreement first, then decide the operative relationship between the old and new instruments; draft an express clause that resolves priority, amendment, and survival issues
2. Build a source-of-truth matrix for each party’s disclosure materials, then reconcile the intake memo, schedules, emails, counsel letters, and appraisal into a single draft position for the agreement
3. Identify every business or compensation interest that needs special treatment, then specify whether the agreement uses classification, exclusion, formula allocation, reimbursement, or carveout logic
4. For equity compensation and similar awards, state the operative dates and the allocation method, then draft the governing language so the same method applies consistently across grant, vesting, and disposition
5. Review negotiation correspondence for contested points, then separate settled items from open items and flag any unresolved position in the cover memo for client decision
6. Confirm how each party’s counsel role is documented, then add recitals and execution acknowledgments that show informed review and voluntary signing
7. If support is addressed, define income and measurement mechanics before drafting the operative clause so the definition matches the intended calculation method
8. If modification or sunset language is needed, link it to a clear triggering event or time period and test whether the clause harmonizes with the rest of the agreement

## 5. Vertical / structural / temporal relationships

- Sequence matters: determine the governing document hierarchy before drafting substantive property or support provisions
- Use the disclosure record as the factual baseline, then test all valuation-dependent clauses against the appraisal and negotiation history
- Treat ownership interests vertically across time: pre-execution ownership, post-execution accretion, vesting periods, and later liquidation may each require different treatment
- For compensation awards, align the drafting with the life cycle of the award rather than a single snapshot date, so the agreement answers what happens at grant, vesting, and realization
- If the agreement references future events such as sale, divorce, separation, amendment, or death, define whether the clause operates immediately, on occurrence, or only after written reaffirmation

## 6. Output structure conventions

- Produce the postnuptial agreement as the primary deliverable first, in a complete Illinois-law form with recitals, operative definitions, disclosure incorporation, property and compensation treatment, any support provisions, counsel acknowledgments, voluntariness language, severability, amendment/supersession language, and signature blocks
- Draft the agreement as a standalone instrument, not a commentary on what it should say; include the actual operative provisions and schedules needed for execution
- Prepare the cover memo only after the agreement file is complete, and use it to identify drafting decisions, unresolved issues, disclosure/valuation discrepancies, enforceability sensitivities, and items needing client confirmation
- In the cover memo, organize issues by topic and state the governing authority or drafting principle for each material judgment; do not leave legal conclusions unsupported by the rule they depend on
- Close the cover memo with concrete next steps, assigning the needed action to the appropriate role and tying it to the signing or finalization milestone
- Before finishing, confirm that both named deliverables exist, are non-empty, and contain operative drafting rather than a description of the drafting plan