New Mexico Estate Tax Calculator

Pri Geens

Pri Geens

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New Mexico Estate Tax Calculator

Estimate the federal estate tax on a New Mexico decedent’s estate and confirm that New Mexico itself charges nothing. New Mexico repealed its estate tax for deaths on or after January 1, 2005, and has no inheritance tax and no gift tax, so for 2024-2026 deaths New Mexico tax is $0. Distinctive rules modeled: community property (only the decedent’s half enters the gross estate), the UPC-style graduated spousal elective share, and the small-estate affidavit. Three modes: estimate the tax, test a larger estate, or solve for the years of gifting needed to reach zero. Fields marked * are required; Calculate names any left empty.

New Mexico rules this calculator enforces: NO state estate tax for deaths on or after January 1, 2005 (NMSA 1978, 7-9-1 et seq. repealed; VERIFY exact date), and the pre-repeal tax was a pick-up tied to the federal state death tax credit (zero after 2004), so no New Mexico estate tax return is filed; no inheritance tax; no gift tax; COMMUNITY PROPERTY state, so only the decedent’s one-half of community assets enters the gross estate, the surviving spouse’s half passes outside the estate, and community assets get a double basis step-up (IRC 1014(b)(6)); spousal elective share UPC-style graduated over the augmented estate (NMSA 45-2-201 et seq.; VERIFY), 3% under 1 year rising 3 points per year to 45% at 14 years and 50% at 15 or more, approximated on the net estate; small-estate affidavit where personal property is $100,000 or less (NMSA 45-3-1201; VERIFY); probate venue in the District Court of the county of domicile (33 counties).
Federal: unified estate and gift schedule topping at 40%; basic exclusion $13,610,000 (2024), $13,990,000 (2025), $15,000,000 (2026); federal portability (DSUE) allowed; unlimited marital and charitable deductions; GST 40%.
Sets the federal exclusion and annual gift exclusion. New Mexico tax is $0 for all three years.
District Court probate venue; the estate tax itself is federal only.Required. Please choose a New Mexico county.
Select a county to see the District Court venue, the small-estate affidavit threshold, and the federal exclusion for the selected year.

Assets at date of death

Only the decedent’s one-half enters the gross estate.Enter 0 or a positive amount.
Home, land, rental buildings held as separate property.Enter 0 or a positive amount.
Checking, savings, CDs, stocks, bonds, mutual funds.Enter 0 or a positive amount.
IRAs, 401(k)s, 403(b)s, pensions, annuity contracts.Enter 0 or a positive amount.
Death benefit includible when the decedent held any incident of ownership.Enter 0 or a positive amount.
Closely held business, vehicles, equipment, receivables, trusts includible in the estate.Enter 0 or a positive amount.
Count community assets once on the community line (only half enters the gross estate and community assets get a double step-up). Count separate assets on their own lines.

Debts and administration costs

Deductible obligations of the decedent.Enter 0 or a positive amount.
Deductible when paid by the estate.Enter 0 or a positive amount.
Deductible administration expense.Enter a percentage between 0 and 25.
Filing fees, publication, appraisal costs.Enter 0 or a positive amount.
Deductible if not compensated by insurance.Enter 0 or a positive amount.

Bequests and marital status

Drives the UPC-style graduated elective share (NMSA 45-2-201 et seq.): 3% under 1 year, plus 3 points per year, 50% at 15+ (VERIFY).Enter a whole number between 0 and 80.
Unlimited marital deduction for a citizen spouse or a QDOT.Enter 0 or a positive amount.
Unlimited deduction for qualifying charities.Enter 0 or a positive amount.

Prior gifts, portability and GST

Post-1976 taxable gifts; they consume the federal exclusion. New Mexico has no gift tax and no add-back.Enter 0 or a positive amount.
Federal portability; requires a timely federal Form 706 election.Enter 0 or a positive amount.
Federal GST at a flat 40% on Form 706 Schedule R.Enter 0 or a positive amount.
Equals the federal basic exclusion for the year of death.Enter 0 or a positive amount.

Gifting plan

Required in gifting mode. Annual-exclusion gifts are not taxable gifts.Required in gifting mode. Enter 1 or more donees.
Amounts above the annual exclusion become taxable gifts.Enter 0 or a positive amount.
Gifts carry over basis and lose the step-up at death.Enter 0 or a positive amount.
If the tax cannot be eliminated inside this horizon, the calculator says so.Enter a whole number between 1 and 100.

How it works

  • New Mexico charges nothing for recent deaths. The New Mexico estate tax (NMSA 1978, 7-9-1 et seq.) was a pick-up tax tied to the federal state death tax credit and was repealed for deaths on or after January 1, 2005 (VERIFY), so no New Mexico estate tax return is filed. There is no New Mexico inheritance tax and no New Mexico gift tax.
  • Only federal transfer taxes apply. The federal estate tax applies above the basic exclusion using the unified 18% to 40% schedule, and the federal GST applies at 40% to direct skips above the allocated GST exemption.
  • Community property is halved. New Mexico is a community property state, so only the decedent’s one-half of community assets enters the gross estate; the spouse’s half passes outside the estate and community assets receive a double basis step-up (IRC 1014(b)(6)).
  • Portability is federal only. A surviving spouse may inherit the unused federal exclusion (DSUE) with a timely Form 706 election; there is no New Mexico state exclusion to port.
  • Elective share is graduated. New Mexico adopted the UPC elective share (NMSA 45-2-201 et seq.): 3% of the augmented estate rising 3 points per year of marriage to 45% at 14 years and 50% at 15+ (VERIFY); approximated here on the net estate.
  • Small estates. The affidavit for collection of personal property under NMSA 45-3-1201 is available where personal property is $100,000 or less; verify the current figure.
  • Binding factor names what controls the result: the federal basic exclusion, the federal unified schedule above it, or the GST.
  • Gifting mode uses the guarded bisection solver (60 expansions, 90 iterations, rounded up) to find the years of annual-exclusion gifting that bring the taxable estate to the exclusion or below.
  • Gifting is not free. Carryover basis loses the step-up; the deferred gain is netted against the tax saved.

Sources

  • NMSA 1978, 7-9-1 et seq. (New Mexico estate tax, a pick-up tax tied to the federal state death tax credit) and its repeal for deaths on or after January 1, 2005 (VERIFY exact date); New Mexico Taxation and Revenue Department guidance confirming no state estate, inheritance or gift tax for those deaths.
  • NMSA 45-2-201 et seq. (UPC-style graduated spousal elective share over the augmented estate; VERIFY exact table); NMSA 45-3-1201 (small-estate affidavit, $100,000 personal property; VERIFY current figure); New Mexico community property law and probate venue in the District Court of the county of domicile (33 counties).
  • IRC chapter 11 unified schedule and exclusion ($13,610,000 / $13,990,000 / $15,000,000 for 2024 / 2025 / 2026); IRC 2010 portability; IRC 2042 life insurance inclusion; IRC 2055 charitable deduction; IRC 1014(b)(6) community property double step-up; IRC chapter 13 GST at 40%; IRC 1015 carryover basis.
  • IRS Form 706 and Form 4768 instructions (9-month deadline, 6-month filing extension).

Test cases

TC1 – Below federal exclusion, community property. Bernalillo (Albuquerque), 2025, married 10 years, citizen. Community 1,600,000; real 500,000; financial 400,000; retirement 300,000; debts 200,000; funeral 12,000; atty 2%; court 400.
Community share 800,000; separate 1,200,000; gross 2,000,000; admin 36,400; deductions 248,400; net estate 1,751,600; TE 1,751,600 below 13,990,000. Federal $0, NM $0, TOTAL $0. Headroom 12,238,400; ceiling 14,238,400. Affidavit NOT available (personal property 700,000). Elective share 33% = 578,028.
TC2 – Above federal exclusion. Santa Fe, 2025, single. Real 9,000,000; financial 6,000,000; retirement 4,000,000; business 2,000,000; debts 500,000; funeral 20,000; atty 2%; court 400; charitable 69,600.
Gross 21,000,000; admin 410,400; deductions 930,400; net estate 20,069,600; TE 20,000,000 above 13,990,000. Federal tentative 7,945,800 less credit 5,541,800 = FEDERAL 2,404,000. NM $0. TOTAL 2,404,000. Effective 11.45%.
TC3 – Community + marital + DSUE. Dona Ana (Las Cruces), 2025, married 20 years, citizen spouse, bequest 6,000,000, DSUE 2,000,000. Community 20,000,000; real 8,000,000; financial 5,000,000; life 3,000,000; debts 400,000; funeral 25,000; atty 2%; court 400.
Community share 10,000,000; separate 16,000,000; gross 26,000,000; admin 512,400; deductions 937,400; net estate 25,062,600; less marital 6,000,000 = TE 19,062,600; federal exclusion 15,990,000. Federal tentative 7,570,840 less credit 6,341,800 = FEDERAL 1,229,040. NM $0. TOTAL 1,229,040. Effective 4.73%. Elective share 50% = 12,531,300.
TC4 – Gifting solver, 2026, maxYears 60. Sandoval (Bernalillo), single. Real 9,000,000; financial 6,000,000; retirement 3,000,000; business 2,000,000; debts 300,000; funeral 15,000; atty 2%; court 400; 4 donees at 19,000.
Gross 20,000,000; admin 394,400; deductions 709,400; net estate 19,290,600; TE 19,290,600 above 15,000,000. FEDERAL 1,716,240. Solver: 76,000 per year; 57 YEARS removes 4,332,000 leaving TE 14,958,600 at or below the exclusion, tax $0. Saved 1,716,240.
TC5 – Small estate, affidavit eligible. Taos, 2025, married 5 years, citizen spouse. Community 60,000; retirement 20,000; debts 3,000; funeral 4,000; atty 2%; court 300.
Community share 30,000; separate 20,000; gross 50,000; admin 1,240; deductions 8,240; net estate 41,760; TE 41,760. Federal $0, NM $0, TOTAL $0. Affidavit available (personal property 20,000 at or below 100,000). Elective share 18% = 7,517.

Estimates only. Not legal, tax or financial advice. The New Mexico elective share table, repeal date and small-estate threshold are flagged for verification against NMSA 45-2, 45-3 and 7-9. Verify all figures with the New Mexico Taxation and Revenue Department and federal rules before relying on them.

What Is the New Mexico Estate Tax Calculator?

This calculator estimates the transfer taxes generated by an estate profile for a person domiciled in New Mexico. It starts with entered assets, counts one-half of selected community property, subtracts modeled debts and deductions, applies prior taxable gifts and any entered DSUE, and then calculates federal estate tax and GST tax. It also reports several estate-planning and probate-related figures.

The calculator determines whether the entered estate produces federal transfer tax, how much tax its formulas generate, and how far the estate is from its applicable federal exclusion. Users can also test estate-size headroom or estimate the number of annual-exclusion gifting years needed to reduce calculated transfer tax to zero.

The calculator supports death years 2024 through 2026. Its code uses federal basic exclusions of $13,610,000 for 2024, $13,990,000 for 2025, and $15,000,000 for 2026. DSUE entered by the user is added to that basic exclusion. The interface itself flags several New Mexico legal details, including the repeal date, elective-share table, and small-estate threshold, for verification.

How the New Mexico Estate Tax Calculation Works

The calculation first builds the gross estate. If the community-property checkbox is selected, the calculator includes one-half of the entered total community property. It then adds separate real property, financial accounts, retirement assets, includible life insurance, and business or other property.

G=0.5C+R+F+Q+L+BG=0.5C+R+F+Q+L+B

Here, G is the gross estate, C is total community property when that option is selected, and the remaining variables represent the five separate-asset categories. If community property is not selected, its contribution is zero.

Administration costs are calculated from the gross estate after debts, not from the final net estate. The code takes the greater of gross estate minus debts or zero, multiplies that amount by the entered attorney and personal-representative fee percentage, and adds court costs.

A=max⁡(G−D,0)×p100+KA=\max(G-D,0)\times\frac{p}{100}+K

The calculator then subtracts debts, funeral expenses, administration costs, and entered casualty or theft losses. The result is floored at zero. An allowed marital deduction is then limited to the remaining estate, followed by a charitable deduction limited to what remains after the marital deduction.

TE0=max⁡(N−M−H,0)TE_0=\max(N-M-H,0)

Here, TE0 is the taxable estate before planned gifting, N is the net estate after debts and administration deductions, M is the allowed marital deduction, and H is the charitable deduction.

For gifting calculations, the effective annual gift per donee is the smaller of the entered gift and the calculator’s annual-exclusion amount. The code uses $18,000 for 2024 and $19,000 for 2025 and 2026. Planned gifting reduces the taxable estate by that effective amount multiplied by the number of donees and years.

TE=max⁡(TE0−min⁡(g,e)×n×y,0)TE=\max\left(TE_0-\min(g,e)\times n\times y,0\right)

Earlier taxable gifts are then added back to create the federal tax base. The applicable exclusion equals the basic exclusion for the selected year plus entered DSUE.

B=TE+P,E=E0+DSUEB=TE+P,\qquad E=E_0+DSUE

The federal tentative tax function uses progressive rates of 18%, 20%, 22%, 24%, 26%, 28%, 30%, 32%, 34%, 37%, 39%, and 40%. The corresponding upper bracket points are $10,000, $20,000, $40,000, $60,000, $80,000, $100,000, $150,000, $250,000, $500,000, $750,000, and $1,000,000, with 40% applied above the final point.

F={0,B≤ET(B)−T(E),B>EF=\begin{cases}0,&B\le E\\T(B)-T(E),&B>E\end{cases}

T(x) is the calculator’s progressive federal tax schedule. Federal estate tax is therefore calculated as the tentative tax on the federal base minus the tentative tax represented by the applicable exclusion, but only when the base exceeds that exclusion.

GST tax is calculated separately. The calculator subtracts the entered GST exemption from direct skips, floors the result at zero, and applies 40%. New Mexico estate and inheritance tax are both fixed at zero in the calculation.

GST=0.40×max⁡(S−X,0)GST=0.40\times\max(S-X,0)
Total transfer tax=F+GST\text{Total transfer tax}=F+GST

Worked Example

Consider the calculator’s 2025 example with $9,000,000 of real property, $6,000,000 of financial assets, $4,000,000 of retirement assets, and $2,000,000 of business property. Gross estate is $21,000,000. Debts are $500,000, funeral expenses are $20,000, the fee percentage is 2%, court costs are $400, and the charitable bequest is $69,600.

The administration cost is ($21,000,000 − $500,000) × 2% + $400 = $410,400. Total deductions before the charitable bequest are $930,400, producing a net estate of $20,069,600. After the $69,600 charitable deduction, the federal base is $20,000,000.

For 2025, the calculator uses a $13,990,000 exclusion. Its progressive schedule produces tentative tax of $7,945,800 on $20,000,000 and an applicable credit of $5,541,800 on the exclusion. The calculated federal estate tax is therefore $2,404,000. With no GST tax entered, total transfer tax is $2,404,000, or about 11.45% of the $21,000,000 gross estate.

How to Use the New Mexico Estate Tax Calculator

  1. Choose whether you want to calculate tax on the estate, test whether a larger estate would be taxed, or solve for years of annual-exclusion gifting.
  2. Select the year of death and a New Mexico county of domicile. The county is required for the calculator’s venue display.
  3. Enter the estate’s assets. If the community-property option applies to the scenario, select it and enter both halves of the community property on that line.
  4. Enter debts, funeral expenses, the administration-fee percentage, court costs, and any casualty or theft losses.
  5. Enter marital-status information, spouse and charitable bequests, prior taxable gifts, DSUE, and GST information as applicable to the scenario.
  6. For gifting analysis, enter the number of donees, gift per donee, maximum years to test, and the other gifting fields shown by the calculator.
  7. Check the required acknowledgment and select the calculation button. Its label changes with the selected mode.

In estate mode, the primary result is total transfer tax. Headroom mode reports a verdict plus remaining exclusion headroom and a calculated tax-free gross-estate ceiling. Gifting mode reports either the number of years required, that no gifting is needed, or that the entered annual gifting cannot eliminate the calculated tax within the chosen maximum number of years.

Understanding the Inputs, Results, and Code Limits

Input or resultHow the calculator handles it
Most dollar inputsAccept values from $0 to $100,000,000.
Administration fee percentageAccepts 0% to 25%; default is 2%.
Years marriedAccepts 0 to 80. The calculation reads the value as an integer.
DoneesAccepts 0 to 200. It is marked required in gifting mode, although the implemented validation still accepts zero.
Maximum gifting yearsAccepts 1 to 100; default is 40.
Currency resultsDisplayed values are rounded to the nearest whole dollar.
Effective transfer-tax rateTotal transfer tax divided by gross estate and displayed to two decimal places.

The marital deduction is allowed by the code only when the decedent is marked married and the surviving spouse is either marked as a U.S. citizen or the QDOT option is selected. The deduction cannot exceed the net estate available before marital and charitable deductions.

The calculator’s elective-share estimate is separate from the estate-tax formula. For a married decedent, the percentage begins at 3% when entered years of marriage are zero, rises three percentage points for each integer year through a 45% cap before year 15, and becomes 50% at 15 years or more. The percentage is applied to the calculator’s net estate as a proxy. The interface flags this state-law treatment for verification.

Small-estate status is determined only from the entered financial accounts, retirement accounts, life insurance, and business or other personal property. If that total is $100,000 or less, the calculator marks the small-estate affidavit as available. Real property and the community-property line are not included in this particular test. The interface also flags the $100,000 figure for verification.

The gifting solver searches for the smallest whole number of years, within the entered maximum, that makes total transfer tax zero. Because GST tax is calculated independently from the estate reduction, an unchanged GST liability can prevent the solver from ever reaching zero even if federal estate tax is eliminated.

Two implementation details are worth knowing. The calculator accepts unrealized gain, a capital-gains rate, and the NIIT checkbox, but the current result object does not carry the entered unrealized-gain value into the displayed basis-cost calculation. As written, the deferred-capital-gains and related net-benefit displays therefore resolve to $0. Also, the short estate-mode summary references an unset net-to-heirs property, while the detailed “What heirs receive” section separately calculates net to other heirs from the net estate, bequests, and transfer tax.

This is an estimate produced by the supplied calculator logic, not legal, tax, or financial advice. Estate-tax filing requirements, deductions, property treatment, and probate procedures can depend on facts the calculator does not model. The calculator itself identifies some New Mexico legal values as needing verification.

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Frequently Asked Questions

Does this calculator charge New Mexico estate tax?

No. In the implemented calculation, New Mexico estate tax and New Mexico inheritance tax are always $0 for the supported 2024, 2025, and 2026 death years. The calculator can still produce federal estate tax or federal GST tax. Its interface notes that the stated New Mexico repeal date should be independently verified.

How does community property affect the gross estate?

If the community-property checkbox is selected, the calculator includes exactly 50% of the amount entered as total community property. It then adds all entered separate assets. If the checkbox is not selected, the community-property line contributes nothing to the gross-estate calculation.

How does DSUE affect the result?

The entered DSUE amount is added directly to the federal basic exclusion for the selected death year. The calculator compares the federal tax base against this combined exclusion and also calculates the federal credit by applying the same progressive tax schedule to the combined exclusion amount.

How are prior taxable gifts handled?

Earlier taxable gifts are added to the taxable estate after deductions and any modeled annual-exclusion gifting. This creates the federal base used for the exclusion comparison and tentative tax calculation. The calculator does not apply a New Mexico gift tax or New Mexico gift add-back.

How does the gifting-years calculation work?

The calculator first limits each annual gift to its encoded annual-exclusion amount, multiplies that value by the number of donees, and removes that amount from the estate for each tested year. It then searches for the smallest whole number of years that produces zero total transfer tax within the selected maximum horizon.

Why can the gifting solver say the tax cannot be eliminated?

The annual gift amount may be too small to reduce the estate sufficiently within the selected number of years. A separate GST liability can also remain because the gifting reduction does not change the calculator’s direct-skip or GST-exemption inputs. In either case, total transfer tax may stay above zero throughout the search horizon.

Does the calculator require every field to be filled in?

No. Many numeric fields begin at zero and are not individually required. The calculation mode, year of death, county, capital-gains-rate selection, and acknowledgment are required by the interface. The number of donees is also treated as a required field in gifting mode, although an entered value of zero currently passes the implemented range validation.

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