New Hampshire Estate Tax Exemptions for Surviving Spouses: Executor Guide

When someone passes away in New Hampshire and leaves behind a surviving spouse, the person named as executor has a lot to figure out taxes being one of the most confusing parts. The good news is that New Hampshire's estate tax rules are actually more favorable than most states. But "more favorable" doesn't mean "nothing to worry about." Federal estate tax rules, portability elections, and filing deadlines still matter, and missing them can cost the surviving spouse hundreds of thousands of dollars in unnecessary taxes down the road. This guide breaks down exactly what an executor needs to know about estate tax exemptions for surviving spouses in New Hampshire.

Does New Hampshire Have a State Estate Tax?

No. New Hampshire repealed its estate tax for individuals who die on or after January 1, 2005. Before that, the state imposed a "pick-up" estate tax tied to the federal credit for state death taxes. That credit was eliminated by federal law changes, and New Hampshire chose not to replace it with a standalone tax.

What this means for executors: you do not need to file a separate New Hampshire estate tax return. However, you may still need to file a federal estate tax return (IRS Form 706) depending on the size of the estate and whether you want to make certain elections for the surviving spouse.

What Is the Federal Estate Tax Exemption and How Does It Protect Surviving Spouses?

The federal government allows each person to pass a certain amount of assets free of estate tax. For 2024, that exemption is $13.61 million per individual. For 2025, it rises to $13.99 million. Married couples can effectively double this amount through proper planning.

Two key federal rules protect surviving spouses:

Unlimited marital deduction: Any assets left to a surviving spouse who is a U.S. citizen are not subject to federal estate tax at the time of the first spouse's death. There is no cap. The tax is simply deferred until the surviving spouse later passes away.
Portability (DSUE): The "Deceased Spousal Unused Exclusion" allows a surviving spouse to claim the unused portion of the deceased spouse's federal exemption but only if the executor files a federal estate tax return to make that election.

This second point is where many New Hampshire executors make costly mistakes.

Why Does the Portability Election Matter So Much?

Imagine a married couple in Concord. The first spouse dies in 2024 with an estate worth $4 million. Because the federal exemption is $13.61 million, no federal estate tax is owed. But that also means $9.61 million of the deceased spouse's exemption goes unused.

If the executor files Form 706 and elects portability, the surviving spouse now carries their own $13.61 million exemption plus the $9.61 million from their late spouse for a combined exemption of about $23.22 million.

If the executor skips the filing because "no tax is owed," the surviving spouse loses that extra $9.61 million forever. If the surviving spouse's estate later grows above their own exemption limit through investments, inheritance, life insurance, or real estate appreciation their heirs could face a significant federal tax bill that was entirely avoidable.

The deadline to file Form 706 for portability is nine months after the date of death, with a possible six-month extension. Miss it, and the election is gone unless you request special IRS relief, which is not guaranteed.

What Is the Executor Responsible for Regarding Estate Taxes?

Even though New Hampshire has no state estate tax, the executor still has federal obligations. Here is what that typically involves:

Determine the gross estate value. This includes real estate, bank accounts, retirement accounts, life insurance payable to the estate, investments, business interests, and personal property. A detailed inventory helps with this, and you can learn more about completing estate inventory forms as an executor.
Identify all allowable deductions. Debts, funeral expenses, administrative costs, and transfers to the surviving spouse all reduce the taxable estate.
Decide whether a federal return is required. If the gross estate exceeds the federal exemption threshold, Form 706 is mandatory. If the estate is below the threshold but you want to elect portability, filing is still strongly recommended.
File Form 706 on time. The nine-month deadline is firm. Extensions give you more time to file, but not more time to pay any tax due.
Coordinate with the probate court. New Hampshire probate courts require certain documentation during the estate administration process. Understanding the court's document requirements helps keep the process moving.

You can also review our broader breakdown of executor responsibilities for inheritance and estate tax returns to see how these duties fit together.

Do Life Insurance Proceeds Count Toward the Estate?

Often, yes and this catches many families off guard. If the deceased spouse owned a life insurance policy on their own life, the proceeds are included in their gross estate for federal tax purposes, even if the money goes directly to a named beneficiary. This is true regardless of New Hampshire's lack of a state estate tax.

For example, a Portsmouth couple might have a $5 million term life policy owned by the husband. If he dies and the estate otherwise totals $10 million, the gross estate for federal purposes is $15 million which exceeds the individual exemption. Without portability or other planning, the estate could owe federal tax on the amount above $13.61 million.

This is one reason why reviewing the deceased's insurance policies early in the process matters.

What About Assets Left in Trust for the Surviving Spouse?

The unlimited marital deduction applies to outright transfers to a surviving spouse and to certain qualifying trusts most commonly a QTIP trust (Qualified Terminable Interest Property trust). If the deceased spouse's will or trust directs assets into a QTIP trust for the surviving spouse's benefit, those assets can qualify for the marital deduction, but the executor must make the QTIP election on Form 706.

If the trust does not meet IRS requirements for instance, if the surviving spouse does not receive all the income annually the marital deduction may be denied, and the estate could face an unexpected federal tax bill.

Common Mistakes Executors Make With Surviving Spouse Exemptions

Assuming no filing is needed because the estate is below the threshold. Even when no tax is owed, filing for portability is often the smartest move for the surviving spouse's future tax protection.
Missing the filing deadline. Nine months goes quickly when you are also dealing with grief, probate, and asset transfers. Mark the deadline on a calendar early.
Underestimating the estate value. Forgetting life insurance, retirement accounts, jointly held property, or recent real estate appraisals can lead to an inaccurate picture.
Not getting a qualified appraisal. The IRS requires fair market value not purchase price or tax-assessed value for real estate, business interests, and collectibles. An inaccurate valuation can trigger an audit.
Failing to coordinate with an accountant or estate attorney. The executor's job is legally binding, and errors can create personal liability. Professional guidance is worth the cost, especially when portability elections or large estates are involved.

For help staying on schedule with paperwork and deadlines, see our guide on estate tax paperwork and filing deadlines for New Hampshire executors.

Does the Surviving Spouse Need to Do Anything?

Most of the estate tax work falls on the executor, not the surviving spouse directly. But the surviving spouse should:

Provide the executor with full information about jointly owned assets, life insurance policies, and any prenuptial or postnuptial agreements.
Understand that portability protects their estate and heirs so cooperating with the filing is in their interest.
Consider their own estate planning after the first spouse's death. Portability does not replace good planning through trusts, beneficiary designations, and updated wills.
Keep records of the exemption amount transferred to them (the DSUE amount) for their own estate tax filing years or decades later.

What Happens if the Federal Exemption Drops?

The current high exemption is scheduled to sunset after 2025. If Congress does not act, the exemption could revert to roughly $7 million (adjusted for inflation). This is exactly why portability elections matter now more than ever. A surviving spouse who locked in their deceased spouse's unused exemption during the current high-exemption period keeps that amount even if the law changes.

Executors who handle estates in 2024 and 2025 have a narrow window to maximize this benefit for surviving spouses.

Practical Next Steps for New Hampshire Executors

Here is a checklist to keep you on track:

Get organized immediately. Gather the death certificate, will, trust documents, financial statements, insurance policies, and property deeds.
Inventory all assets. Use the New Hampshire estate inventory process to document everything at fair market value.
Calculate the gross estate. Include life insurance, retirement accounts, real estate, and jointly held property. If the total approaches or exceeds the federal exemption, a filing will be required.
Consult an estate attorney and CPA. Even if the estate seems straightforward, professional review protects you from personal liability.
File Form 706 if required or beneficial. Even for estates below the threshold, filing for portability is one of the most valuable things you can do for the surviving spouse and their heirs.
Meet your deadlines. Nine months from the date of death. Request an extension (Form 4768) if you need more time, but do not let the deadline pass without action.
File probate documents with the court. Stay on top of New Hampshire probate court requirements throughout the process.

One tip that saves real money: Even when the estate is well under the federal exemption and no tax is due, filing Form 706 to elect portability gives the surviving spouse an extra layer of federal exemption that could save their heirs hundreds of thousands of dollars later. The cost of preparing the return is small compared to the potential tax savings. Treat it as insurance the kind you hope you never need but are glad you have.