What Should a Prenup or Estate Plan Cost in 2026? A State-by-State Cost Guide (NY, CA, MA)
For couples thinking about a prenup or an estate plan in 2026, prices vary wildly depending on who you hire and where you live. The same standard prenup that costs $5,000 with a flat-fee online provider can run $40,000 or more with two boutique matrimonial firms in Manhattan. The same standard estate plan that costs $2,500 with a concierge platform can cost $15,000 with a Century City trusts-and-estates boutique. This guide breaks down the costs for each in 2026 across the three states where Neptune is live: New York, California, and Massachusetts.
Key takeaways
- Neptune's prices are flat and uniform across states: $5,000 for a prenup (both partners, both attorneys) and $2,500 for an estate plan (both partners, full document set).
- Traditional firm prices vary by metro and complexity. NYC and LA are the most expensive markets, with HNW boutique prenup engagements running into five and even six figures couple-total. Boston is less expensive but still significantly above Neptune's flat fee.
- State-specific factors matter beyond price. New York and Massachusetts have low state estate tax exemptions that drive more couples into taxable estate planning. California has no state estate tax but the highest probate costs in the country.
- For standard upper-middle-income couples, Neptune is built for the situation across all three states. For ultra-high-net-worth or complex situations, the right traditional firm is worth the additional cost.
New York: Prenup and estate plan pricing in 2026
Prenup pricing
- Neptune: $5,000 flat (both partners, both attorneys)
- NYC boutique matrimonial firms: $10,000 to $25,000 per side typical, $20,000 to $50,000+ couple total. HNW negotiations can run materially higher.
- NYC senior matrimonial attorney hourly rates: $500 to $1,200 per hour
Estate plan pricing
- Neptune: $2,500 flat (both partners, full document set)
- NYC traditional estate planning firms: $3,500 to $10,000+ for a standard couple's plan
- NYC senior estate attorney hourly rates: $400 to $750 per hour
New York-specific factors
- NY estate tax exemption: $7.35 million for 2026, with a "cliff" structure under NY Tax Law Section 952 that taxes the entire estate (not just the amount above) once the estate exceeds 105% of the exemption (about $7.72 million in 2026).
- NY enforceability requirements for prenups: under NY Domestic Relations Law Section 236(B)(3), the agreement must be in writing, subscribed by both parties, and acknowledged in the manner required to record a deed. Independent counsel and full financial disclosure further reduce enforceability risk.
- NYC real estate values push more couples toward the NY estate tax cliff than they expect.
California: Prenup and estate plan pricing in 2026
Prenup pricing
- Neptune: $5,000 flat (both partners, both attorneys)
- LA HNW family law boutiques: $15,000 to $25,000 per side for a clean engagement, $50,000+ per side for complex matters. Couple totals often $30,000 to $100,000+.
- LA HNW family law hourly rates: $650 to $1,500 per hour
Estate plan pricing
- Neptune: $2,500 flat (both partners, full document set)
- LA traditional trusts and estates firms: $5,000 to $15,000+ for a standard couple's plan
- LA senior estate attorney hourly rates: $500 to $1,000 per hour
California-specific factors
- No state estate tax, but California probate fees can run 4 to 8% of the gross estate combined, among the highest in the country. Under California Probate Code Section 10810 and Section 10800, the attorney and the personal representative each get the same graduated statutory fee schedule, so the cost effectively doubles. The revocable trust is the standard probate-avoidance tool.
- California prenup enforceability requirements: independent counsel for each party, a 7-day review period under California Family Code Section 1615, and voluntariness.
- California is a community property state. Without a prenup, most assets acquired during the marriage are split 50/50 in a divorce by default.
- Proposition 19 reshaped property tax assessment transfers to children. Worth addressing in any LA estate plan that includes real estate.
Massachusetts: Prenup and estate plan pricing in 2026
Prenup pricing
- Neptune: $5,000 flat (both partners, both attorneys)
- Boston family law firms: $5,000 to $10,000 per side for a clean engagement, $15,000 to $25,000+ per side for complex matters. Couple totals often $10,000 to $40,000+.
- Boston senior family law hourly rates: $400 to $850 per hour
Estate plan pricing
- Neptune: $2,500 flat (both partners, full document set)
- Boston traditional estate planning firms: $4,000 to $12,000+ for a standard couple's plan
- Boston senior estate attorney hourly rates: $400 to $750 per hour
Massachusetts-specific factors
- MA estate tax exemption: $2 million per person for 2026 (raised from $1M in the 2023 reform, not indexed for inflation), one of the lowest state exemptions in the country. The 2023 reform also repealed the old "cliff," so estates above $2M now owe tax only on the amount above the threshold, taxed at a graduated rate of 0.8% to 16%.
- MA prenup enforceability standard: the "DeMatteo" two-step requires both procedural and substantive fairness at the time of execution and at the time of enforcement.
- Boston metro real estate values push plenty of dual-income couples past the $2M threshold without realizing it, even after the cliff repeal.
What drives the price difference?
The Neptune fee and the traditional firm fee are not pricing the same thing.
Traditional firms bill for partner-led complexity. A senior matrimonial or estates partner at a major-metro boutique brings 20-30 years of expertise that is worth their rate when the situation calls for it. For HNW couples with operating businesses, contested negotiations, multi-state real estate, or estates well above state and federal exemptions, that bench is the right call.
Neptune's flat fee prices the standard product. For a dual-income upper-middle-income couple with a typical asset picture, the work to deliver an enforceable prenup or a probate-avoiding estate plan is not 100 partner hours. It is a structured process, run by experienced attorneys, with an AI concierge organizing the inputs and tracking the back and forth. Neptune is built specifically for that profile of couple.
The question is not which firm is "better." It is which one matches the situation. Standard situations fit Neptune. Complex situations fit a traditional firm.
Bottom line
Across NY, CA, and MA, the pricing pattern is consistent: Neptune is $5,000 flat for a prenup and $2,500 flat for an estate plan, uniform regardless of state. Traditional firm pricing scales with metro, firm tier, and complexity, with NYC and LA at the top of the range.
For most dual-income, wealth-building couples in their 30s and 40s, Neptune is built for the situation. For HNW couples, founders pre-exit, families with operating businesses, or couples expecting a contested negotiation, the right traditional firm is worth the price.
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Frequently asked questions
Why does Neptune cost the same in every state?
The product is built on a structured process and a vetted attorney network, not a high hourly-billing model that varies by metro. The cost to deliver a Neptune prenup or estate plan does not change meaningfully between NY, CA, and MA, so the price does not either.
Why do traditional firms cost so much more, especially in NYC and LA?
Two reasons. First, hourly billing scales with attorney effort, and the back and forth between two boutique firms typically takes more hours than a structured process inside one platform. Second, top-tier matrimonial and estates partners in NYC and LA command $700 to $1,500 per hour. For HNW work, those rates are justified by the bench. For standard couples, they are usually more attorney time than the situation needs.
Is the price difference about quality?
No. Neptune's attorneys are licensed in their state and bring meaningful experience in family law or estate planning. The price difference is about model, not quality. Traditional firms price for partner-led work on complex matters. Neptune prices for standard situations, run on a structured process.
Are there situations where I should pay the higher traditional firm price?
Yes. If you are an ultra-high-net-worth couple, if one or both partners has family wealth with trust interests, if there is an operating business with significant complexity, or if the negotiation is going to be contested, a traditional firm is worth the additional cost. Neptune will be upfront about it if your situation falls outside the standard product and can refer to firms with the relevant expertise.
What does Neptune actually deliver for the price?
For the prenup ($5,000 flat): both partners get their own independent state-licensed family law attorney, AI-assisted intake and alignment, full financial disclosure through the platform, drafting and negotiation, and execution. For the estate plan ($2,500 flat): both partners get a licensed estate planning attorney, the full document set (revocable trust, pour-over wills, healthcare directives, durable powers of attorney, guardian designations), attorney drafting and review, and back and forth during the engagement.
How does pricing work for updates?
Both products are revocable and can be updated as life changes. Updates are typically faster and cheaper than starting from scratch with any firm. Neptune handles ongoing updates as part of the relationship; traditional firms typically charge per update engagement.