Online Prenup Services: How Concierge Compares to Traditional Firms in 2026

hat a prenup actually does

A prenup is a written agreement signed before the wedding that decides what happens to each partner's assets and income in the event of divorce or death. It overrides the state's default property division rules with the couple's chosen terms. The document covers:

• Separate vs marital property: what is each partner's separate property at the time of marriage, and how is property acquired during the marriage characterized.
• Income and earnings: how each partner's income during the marriage is characterized.
• Equity and investment assets: how vesting equity, brokerage accounts, retirement plans, and other investment assets are treated.
• Real estate: how property acquired or held during the marriage is handled.
• Spousal support: whether spousal support (alimony) is waived, capped, or determined by formula.
• Death provisions: how the prenup interacts with each partner's estate plan.

Every state has its own enforceability requirements, but the common elements are: written and signed by both parties, full financial disclosure, independent legal counsel for each partner (required in California for spousal support provisions under CA Family Code Section 1615 and Section 1612(c), strongly recommended everywhere), and substantive fairness at execution and enforcement.

Where the online prenup price gap comes from

Traditional family law firms bill hourly. A senior matrimonial attorney in NYC, LA, or other major markets bills $400 to $800+ per hour. Each partner needs their own attorney. The drafting and negotiation cycles often run 10 to 30 hours per attorney, putting the combined cost between $8,000 and $40,000 for a standard couple prenup.

Concierge services compress the intake into a structured AI-led conversation. The AI handles the financial disclosure (collecting each partner's assets, debts, income, and equity), the decision mapping (what gets characterized how), and the document preparation. Both partners' state-licensed family law attorneys then review, negotiate, and finalize. The attorney time is roughly 4 to 8 hours per partner instead of 10 to 30, which is where the price savings come from. For a fuller breakdown of what couples pay across the spectrum, the prenup cost explainer walks through the concierge and traditional-firm numbers side by side.

What the AI-led intake actually does for a prenup

The intake step for a prenup is more involved than for an estate plan because each partner has to disclose separately and decide separately. The AI handles:

• Financial disclosure for each partner: assets at time of marriage, debts, income (including base salary, bonus structure, equity grants and vesting schedules), inherited or expected family wealth.
• Decision mapping: how each partner wants to characterize separate vs marital property, what each wants for spousal support framework, how to handle the home and other major assets.
• State-specific rule layering: California's 7-day rule, New York's acknowledgment requirements, Massachusetts's two-look standard, Texas's voluntariness anchor.
• Edge case flagging: multi-entity business structures, prior-marriage commitments, expected inheritance, near-term liquidity events, immigration considerations.

The AI does not draft the agreement. It does not negotiate between the partners. It does not make characterization decisions for the couple. Those four functions stay with the state-licensed family law attorneys, one per partner. This is what separates an online prenup service like Neptune from a self-serve template product.

When the concierge model fits

The concierge model works for couples who:

• Have standard asset structures (one or two W-2 incomes, brokerage accounts, retirement plans, possibly a home, possibly some vesting equity at a normal company structure).
• Are aligned on the broad terms (separate-vs-marital characterization, spousal support framework).
• Want a defined timeline (two to four weeks) and a defined cost.
• Are comfortable with a digital intake process for the financial disclosure.

The concierge model does not fit couples whose situation involves:

• Multi-entity business structures with complex ownership across LLCs, S-corps, and partnerships that require specialist analysis.
• Active high-conflict negotiation where the partners are not aligned and the prenup needs to be negotiated through extended back-and-forth.
• Litigation-track posture where the couple expects the prenup to be challenged later and needs counsel built for that contest.

For couples in those situations, the right move is a traditional matrimonial boutique with the negotiation and litigation bench to handle the complexity.

State-by-state enforceability anchors

The enforceability requirements vary by state. The most common live markets:

• California: CA Family Code Section 1615 sets the enforceability requirements. The 7-day rule under Section 1615(c)(2) requires the final agreement to be presented at least seven calendar days before signing. Spousal support provisions require independent counsel under Section 1612(c).
• New York: NY DRL 236 Section 236(B)(3) sets the form requirements. Written and signed by both parties, acknowledged in the manner required to record a deed. Strong fairness review at enforcement.
• Massachusetts: common law plus the DeMatteo standard from DeMatteo v. DeMatteo, 436 Mass. 18 (2002). The prenup must be fair both at execution and at enforcement (the two-look standard).
• Texas: Family Code Chapter 4 (TUPAA). Voluntariness, full disclosure (or knowing waiver), unconscionability anchors under Section 4.006.
• Florida: Uniform Premarital Agreement Act (UPAA) codified. Fair and reasonable disclosure and independent counsel are the practical floor.
• Illinois: Illinois Uniform Premarital Agreement Act. Similar structure to Florida.

A good online prenup service drafts state-specific to each partner's jurisdiction. Neptune handles the state-by-state drafting through its network of state-licensed family law attorneys, in all 50 states.

Common scenarios that fit the concierge prenup model

The concierge model works particularly well for several recurring couple shapes:

• Two W-2 earners with vesting equity at competing tech companies. Each partner has RSUs or options vesting during the marriage. The prenup characterizes premarital grants, marital grants, and what happens at liquidity events.
• A startup founder and a W-2 partner. One partner has illiquid cap table positions; the other has income and savings. The prenup documents how the cap table position stays separate and how appreciation is treated.
• Couples with a premarital home. One partner owns a home before the marriage. The prenup characterizes the home as separate, addresses how mortgage payments during the marriage are treated, and decides how appreciation is allocated if the home is sold.
• Couples in a second marriage with adult children from prior relationships. The prenup documents inheritance commitments to prior-marriage children and characterizes prior-marriage assets.
• Couples with significant family wealth on one side. The prenup documents the family-wealth partner's expected inheritance and how it is protected during the marriage.

These five scenarios cover the majority of couples who actually need a prenup. For each, the online prenup model handles the drafting, negotiation, and finalization at a defined flat fee and timeline. For couples whose situation falls outside these patterns, the concierge model still often works; the specialist boutique is the right choice when the situation involves multi-entity business structures or expected high-conflict negotiation.

What state-licensing actually means for online prenup services

Online prenup platforms vary on how they handle state-licensing of attorneys. The detail matters because the prenup is only enforceable in the state where it is signed if the attorneys involved are licensed in that state.

At Neptune, each partner is paired with a state-licensed family law attorney in the state where the wedding is taking place (or where the couple resides if different from the wedding state). The attorney is licensed in that state and qualified to draft the prenup under that state's law.

At some other online prenup services, the attorney involvement is structured differently:

• A document review by a non-attorney legal professional (a paralegal or similar). This does not count as independent counsel for enforceability purposes.
• An attorney licensed in a different state reviewing the document. This is problematic in states where the prenup requires counsel licensed in the state where the agreement is being signed.
• A self-serve form with no attorney involvement. This produces a document but faces serious enforceability risk in every state.

Before signing up with any concierge service, confirm the attorney drafting or reviewing each partner's side is licensed in the relevant state, is a state bar member in good standing (verify through the state bar website), and that the platform handles the state-specific requirements. State-licensing is the foundation of enforceability.

How Neptune fits

Neptune's prenup is $5,000 flat fee, all-in for both partners. Each partner gets their own state-licensed family law attorney from a vetted network. The AI handles the structured financial disclosure and the decision mapping; the attorneys handle drafting, negotiation, and finalization. Most couples complete the prenup in two to four weeks.

For couples whose situation is more complex (multi-entity business structures, contested asset characterization, expected challenge), Neptune is upfront about scope and refers to a traditional matrimonial firm. If the wedding has already happened and the prenup window is closed, the same couple-first flat-fee model applies to a postnuptial agreement at Neptune.

Related guides

• What Is a Prenup
• Flat-Rate Prenup Services
• Online Prenup Platform Guide