Reciprocal wills are two separate but mirror-image wills that a married couple signs, each leaving assets to the other spouse first and then to the same chosen heirs. Unlike a joint will, each spouse keeps a separate document and can change it later, which makes reciprocal wills more flexible while still reflecting shared wishes.
Married couples who agree on how they want their estate handled often gravitate toward reciprocal wills. The idea is straightforward: each spouse names the other as primary beneficiary, and both wills name the same secondary beneficiaries, usually children. Before choosing this route, it helps to understand how reciprocal wills differ from joint wills and mutual wills, since the three terms get confused constantly and the legal consequences are not the same.
Reciprocal Wills vs. Joint Wills
A joint will is a single document that speaks for both spouses at once, typically stating that the surviving spouse inherits everything, with the estate passing as agreed once the second spouse dies. Joint wills sound efficient, but they carry a serious drawback: they are difficult to change, and in many jurisdictions become irrevocable once the first spouse dies. If circumstances shift, a child becomes disabled and needs a larger share, family relationships change, a surviving spouse locked into a joint will may have no legal way to adjust. That rigidity is why most estate planning professionals steer couples away from joint wills today.
How Reciprocal Wills Work
Reciprocal wills solve the joint will's flexibility problem by using two separate documents instead of one. Each spouse's will mirrors the other's terms, so both agree on the same ultimate beneficiaries, but each document can technically be changed independently. Couples who want the same guardian named for their children, or who want identical distribution plans, often find reciprocal wills a natural fit. If one spouse has a child from a previous relationship, reciprocal wills still leave room to provide for that child separately, something a joint will can make more difficult.
The Drawbacks of Reciprocal Wills
Reciprocal wills still lack full flexibility, especially for complicated estates involving blended families, multiple properties, or children from more than one relationship. The bigger risk shows up after the first spouse dies: because each will is independently revocable, the surviving spouse generally retains the right to rewrite their own will however they choose. If the surviving spouse remarries, the new will could redirect assets to a new spouse instead of the children from the first marriage, even if that was never the original intention. Many states also allow a surviving spouse to make an elective share claim against a deceased spouse's estate, according to Cornell Law School's Legal Information Institute, typically around one-third under traditional rules, which can further complicate a blended family's distribution plan. See our related explainer on wills versus trusts for how a trust structure can address this differently.
Mutual Wills: A Firmer Alternative
Couples who want to lock in their promises more firmly sometimes use mutual wills instead. A mutual will functions as both a will and a contract: it imposes enforceable obligations, and if the surviving spouse breaks the agreed terms, for instance by disinheriting the children after all, the children or another named beneficiary may be able to sue the estate for breach of contract. Mutual wills become irrevocable once the first spouse dies, freezing the distribution plan both spouses agreed to while they were alive. The tradeoff is the same loss of flexibility that makes joint wills risky, just applied more narrowly and by choice.
Tax Considerations for Reciprocal, Joint, and Mutual Wills
Assets passing to a surviving spouse generally qualify for the unlimited marital deduction, meaning the transfer is not subject to federal estate tax no matter the amount, according to the IRS. The exposure shows up later, when the second spouse dies and the combined estate, which may have grown significantly, is measured against the federal estate tax exemption, set at 13,990,000 dollars per individual for 2025. For couples whose combined estate could approach or exceed that threshold, an A-B trust structure lets each spouse's exemption apply separately, which can meaningfully reduce the tax owed by the estate. If your estate is large enough that this matters, talk to an accountant or estate planning attorney about whether an A-B trust fits your situation, since the mechanics get complicated quickly.
Which Option Fits Your Marriage?
Reciprocal wills work well for couples with a simple, shared vision for their estate and no unusual complications like blended families or significant separate property. Mutual wills fit couples who want that shared vision locked in permanently, even at the cost of flexibility. A joint will is rarely the right choice today given how hard it is to unwind. Whichever structure fits, both spouses should also review their power of attorney designations at the same time, since a complete plan covers incapacity as well as death.
How FastWill Supports Married Couples
FastWill's online will builder lets married couples create matching reciprocal wills, each tailored to their state's requirements, without paying separately for two attorney consultations. If your combined estate is large enough to need trust planning, FastWill's trust package can help you build the A-B trust structure described above.
Frequently Asked Questions
Are reciprocal wills the same as a joint will?
No. A joint will is one document for both spouses, usually irrevocable after the first death. Reciprocal wills are two separate mirror-image documents, each independently revocable by its own signer.
Can I change a reciprocal will after my spouse dies?
Generally yes, since reciprocal wills are not contracts, only mutual wills carry that binding, contractual promise not to change the distribution plan.
What happens to a reciprocal will if the surviving spouse remarries?
The surviving spouse can typically rewrite their own will to include a new spouse, which may reduce what the children from the first marriage were expecting to receive.
Do reciprocal wills avoid estate taxes?
Not by themselves. They rely on the same marital deduction any spousal transfer gets, but the combined estate can still face tax exposure when the second spouse dies if it exceeds the federal exemption.
Should we use reciprocal wills or a trust?
It depends on your estate's size and complexity. Reciprocal wills work for simpler estates, while couples with larger or blended estates often benefit from a trust structure that offers more control and potential tax advantages.
Ready to put your shared wishes into writing? Create matching reciprocal wills with FastWill and make sure both documents reflect exactly what you and your spouse agreed on.
