Comparing your options
Online prenup vs. traditional prenup lawyer: which should you use?
A traditional prenup, with two separate hourly attorneys, typically runs $5,000 to $8,000 per couple, more for complex assets. A lawyer-led online prenup uses the same two-independent-attorney structure for a flat fee, usually far less than two hourly attorneys cost separately. A pure DIY template skips the attorneys entirely, which is the real risk, not the word “online”. Neptune is the lawyer-led online prenup service: both partners get their own lawyer for one flat fee.
Flat fee of $5,000 per couple. No payment to get started.
Side by side
Three options, not two
“Online vs. lawyer” suggests you have to trade legal review for convenience. Once you separate a pure template from a lawyer-led online service, that tradeoff mostly disappears.
| Feature | DIY template | Traditional two-attorney | Neptune (lawyer-led online) |
|---|---|---|---|
| Cost per couple | $100–$300, sometimes free | $5,000–$8,000 on average; $10,000–$20,000+ for complex estates or business interests | $5,000 flat, both attorneys included |
| Independent attorney for each partner | None — one document, no counsel | Yes, each partner hires separately | Yes, one drafts, one reviews, same flat fee |
| Reviews your state’s signing and disclosure rules | Not evaluated for your situation | Yes, by each attorney | Yes, by each attorney |
| Handles unusual or complex assets | Generic clauses only | Yes, negotiated directly | Yes, your attorney can review complex situations |
| Typical timeline | Same day | Several weeks to a few months of back-and-forth between two offices | Typically around 3 to 4 weeks when both partners use Neptune attorneys |
Cost ranges reflect typical reported figures for attorney-drafted prenups; your attorney can review current rates for your area.
Where templates run into trouble
The gap is legal review, not convenience
A pure DIY template is the fastest option, and that speed is exactly the tradeoff. Nothing in a generic form checks whether the result will hold up.
No one checks whether a clause will hold up
A template can generate a document, but it cannot tell you whether a specific clause is likely to be enforced where you live, or whether it addresses an asset it was never written for. That review is what a licensed attorney is for.
Financial disclosure is easy to get wrong
Most states require each partner to fully and honestly disclose their finances before signing. A generic form does not know what counts as complete disclosure for your situation, and an incomplete disclosure is one of the most common reasons a prenup is challenged later.
One missing signature step, one strong argument later
When only one partner had a lawyer, or no one did, that gap becomes the argument for setting the whole agreement aside: that a spouse could not have understood what they were giving up. Independent counsel for each side is what closes that gap.
None of this means a template can never work. It means the document alone is not the protection; the independent legal review is. Rules for what counts as valid disclosure and proper signing differ by state, and your attorney can review what applies where you live.
Transparent pricing
One flat fee. Two independent attorneys.
Each partner gets their own licensed attorney. One drafts the agreement; the other reviews it on behalf of the second partner.
$5,000
per couple, total
Rush pricing applies when the wedding is within 45 days. No payment required to get started.
Guides for you
Guides on prenup fundamentals and basics
Start with the guides other couples read before they begin, then take the next step when you are ready.
Common questions about online prenups and lawyers
Is an online prenup legally valid?
It depends on which kind of "online" you mean. A pure template you fill out yourself has no built-in legal review, and courts have set aside agreements like this when one partner lacked independent advice or when financial disclosure was incomplete. A lawyer-led online prenup, where each partner is still connected with their own licensed attorney, is built the same way a traditional prenup is: two independent lawyers, full disclosure, and a proper signing process. The "online" part changes how you get there, not whether a real attorney is involved. Rules for what counts as valid differ by state, and your attorney can review what applies to you.
What is the real difference between a template and a lawyer-led online prenup?
A template is a document generator: you answer questions, it assembles clauses, and no one reviews the result against your state’s rules or your specific situation. A lawyer-led online prenup like Neptune still starts with a guided, AI-assisted intake, but every agreement is drafted and reviewed by two independent, licensed attorneys, one for each partner. The intake makes the process faster and less confusing; the attorneys are what make the result something a court is likely to respect.
How much does a traditional two-attorney prenup cost compared to an online one?
When both partners hire their own traditional attorney and pay hourly, the combined cost is typically $5,000 to $8,000 per couple, and can run $10,000 to $20,000 or more for complex assets like a business or significant investments. A lawyer-led online prenup can charge a flat fee for the same two-independent-attorney structure. Neptune’s flat fee is $5,000 per couple total, covering both attorneys, with no separate hourly billing on either side.
Why does independent counsel for each partner matter so much?
Because it is often the single factor courts look at most closely if a prenup is ever challenged. When only one partner had a lawyer, or neither did, it becomes much easier to argue later that the other partner did not understand, or did not really agree to, what they signed. Having two separate attorneys, each representing only one partner’s interests, is a core part of what makes a prenup durable, not just paperwork.
How long does each option actually take?
A pure template can be filled out in a single sitting, but that speed is exactly the risk: nothing has been reviewed. A traditional two-attorney prenup usually takes several weeks to a few months, since it depends on scheduling and negotiation between two separate law offices. A lawyer-led online prenup is typically faster than the traditional path because the guided intake happens up front, with turnaround of around 3 to 4 weeks when both partners use Neptune attorneys. Rush pricing applies when the wedding is within 45 days.