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Illinois Prenuptial Agreement

Online Prenup in Illinois

Create a legally sound Illinois prenuptial agreement online. State-specific document covering equitable distribution rules, signing requirements, and 750 ILCS 10/1 et seq..

Property System
Equitable Distribution
Signing Timeline
30+ days recommended
Notarization
Recommended
Witnesses
Not required

How Illinois Divides Property

Illinois uses equitable distribution to divide marital property at divorce. Courts consider each spouse’s income, contributions to the marriage, length of the marriage, and other factors — but “equitable” doesn’t mean equal. The process is governed by 750 ILCS 10/1 et seq., which gives courts a structured framework for evaluating the agreement. A prenup lets you define your own division rules in advance, removing uncertainty about how a court might split your assets.

How Clause Helps

Your Clause prenup explicitly defines which property is separate and which is marital, overriding Illinois's default equitable distribution rules with terms you both agree on.

Illinois Signing Requirements

Written agreementMust be in writing — verbal prenups are not valid
Clause handles this
Signed by both partiesBoth parties must sign voluntarily before the wedding
Clause handles this
Notarization recommendedNot legally required but strongly advised for court enforceability
Clause handles this
Independent legal counsel recommendedEach party should have their own attorney review the agreement
Clause handles this
Full financial disclosureBoth parties must disclose all assets, debts, and income — incomplete disclosure is the #1 reason prenups are invalidated
Clause handles this

Prenup Cost in Illinois

Attorney-drafted prenups typically cost $5,000 to $20,000 combined. Here's how Clause compares:

MethodCostTimelineIncludes
Traditional attorneys (both spouses)
$5,000 – $20,0004–8 weeksDrafting, negotiation, revisions
Single attorney + review
$2,500 – $7,0002–4 weeksOne attorney drafts, other reviews
Clause Essential
$549Same dayAgreement Builder, state-specific document, notarized signing support
Clause ComprehensiveBest Value
$699Same dayEssential + all optional clauses, unlimited revisions
Clause + 1 Attorney Review + Notary
$1,3983–5 daysComprehensive + one attorney review + notarization
Clause + 2 Attorney Reviews + Notary
$2,0973–5 daysComprehensive + both spouses reviewed + notarization

Illinois Prenup FAQ

Yes. Illinois has adopted the Uniform Premarital Agreement Act (750 ILCS 10/1 et seq.), which sets clear standards for enforcement. Courts uphold prenups that are in writing, signed by both parties with full financial disclosure, and free from fraud, duress, or unconscionable terms.

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Ready to create your Illinois prenup?

Start for free.

Starting at $549 · Takes 15–25 minutes