Mississippi Estate Tax Calculator
Estimate the federal estate tax on a Mississippi decedent’s estate and confirm that Mississippi itself charges nothing. Mississippi repealed its estate tax for deaths on or after January 1, 2005 (VERIFY) and has no inheritance tax and no gift tax, so for 2024-2026 deaths Mississippi tax is $0. 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.
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%.
Exclusions and portability
Gross estate to taxable estate
Tax computation
What heirs receive
Mississippi succession
Gifting analysis
Three-year gifting projection
How it works
- Mississippi has no estate or inheritance tax. Mississippi repealed its estate tax for deaths on or after January 1, 2005 (VERIFY exact date). There is no Mississippi inheritance tax for recent deaths and no gift tax, so only federal transfer taxes apply.
- No portability (Mississippi). Mississippi has no state exclusion to port; only the federal DSUE ports.
- Common-law state. Mississippi is a common-law state; this tool does NOT halve community property or apply a double step-up.
- Federal estate tax applies above the federal basic exclusion using the unified 18% to 40% schedule; the federal GST applies at 40% to direct skips above the allocated GST exemption.
- Spousal elective share. Mississippi elective share is one-third of the net estate (VERIFY).
- Small estates. Simplified administration is available where the estate value is $50,000 or less; verify the current figure.
- Binding factor names what controls the result: the federal exclusion, the federal unified schedule, or the GST.
- Gifting mode uses the guarded bisection solver (60 expansions, 90 iterations, rounded up). Because only the federal exclusion applies, the solver targets that single exclusion.
- Gifting is not free. Carryover basis loses the step-up; the deferred gain is netted against the tax saved.
Sources
- Former Mississippi estate tax (repealed for deaths on or after January 1, 2005; VERIFY exact date); no Mississippi inheritance tax or gift tax.
- Mississippi elective share (one-third of the net estate; VERIFY); Mississippi small estate simplified administration ($50,000; VERIFY); probate venue in the Chancery Court of the county of domicile (82 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 chapter 13 GST at 40%; IRC 1014 step-up and 1015 carryover basis.
- IRS Form 706 and Form 4768 instructions (9-month deadline, 6-month filing extension).
Test cases
Gross 1,800,000; admin 34,400; deductions 144,400; net estate 1,655,600; TE 1,655,600 below 13,990,000 federal. Federal $0, MS $0, TOTAL $0. Federal headroom 12,334,400.
Gross 10,000,000; admin 194,400; deductions 494,400; net estate 9,505,600; TE 9,505,600 above 13,990,000 federal. FEDERAL 2,039,840. MS $0. TOTAL 2,039,840. Effective 10.26%.
Gross 24,000,000; admin 472,400; deductions 917,400; net estate 23,082,600; less marital 5,000,000 = TE 18,082,600. Federal exclusion 14,990,000; FEDERAL 1,237,040. MS $0. TOTAL 1,237,040. Effective 4.95%. No elective-share note (one-third; VERIFY).
Gross 20,000,000; admin 394,400; deductions 689,400; net estate 19,310,600; TE 19,310,600 above 15,000,000 federal. FEDERAL 1,724,240. MS $0. TOTAL 1,724,240. Solver must reach the federal exclusion 15,000,000: 76,000/yr requires 57 YEARS (removes 4,332,000 leaving TE 14,978,600), tax $0. Saved 1,716,240.
Gross 24,000; admin 760; deductions 4,760; net estate 19,240; TE 19,240 below both exclusions. Federal $0, MS $0, TOTAL $0. Small estate available (estate 19,240 at or below 50,000). No elective-share note (one-third; VERIFY).
Estimates only. Not legal, tax or financial advice. The Mississippi repeal date, elective share and small-estate figure are flagged for verification. Verify all figures with the Mississippi Department of Revenue and federal rules before relying on them.
What Is a Mississippi Estate Tax Calculator?
The Mississippi Estate Tax Calculator estimates federal transfer taxes after adding estate assets, subtracting modeled expenses and bequests, adding earlier taxable gifts, and applying the federal exclusion plus any entered DSUE. Mississippi estate and inheritance taxes remain $0 in the calculation, so federal estate tax and any federal GST tax determine the modeled total.
The calculator has three modes. Estate mode calculates total transfer tax on the entered estate. Headroom mode tests the estate profile and shows unused federal exclusion. Gifting mode searches for the whole number of years of modeled annual-exclusion gifts needed to bring total transfer tax to zero within the selected testing horizon.
| Year of death | Federal basic exclusion used | Annual gift exclusion used |
|---|---|---|
| 2024 | $13,610,000 | $18,000 per donee |
| 2025 | $13,990,000 | $19,000 per donee |
| 2026 | $15,000,000 | $19,000 per donee |
How the Mississippi Estate Tax Calculation Works
The calculation begins by adding real property, financial accounts, retirement accounts and annuities, includible life insurance, and business interests or other property.
Administration costs include the attorney and executor fee plus entered Chancery Court filing and other costs. Although the field label describes the fee as a percentage of net estate, the code actually applies the percentage to gross estate minus debts, with that fee base floored at zero.
The calculator subtracts debts, funeral expenses, administration costs, and casualty or theft losses to produce the net estate.
A marital deduction is used only when the decedent is marked married and the surviving spouse is a U.S. citizen or the bequest passes to a QDOT. The deduction cannot exceed the net estate. The charitable deduction is then capped at the amount remaining after the marital deduction.
For gifting calculations, the effective annual gift per donee is the smaller of the entered gift and the coded annual exclusion.
Earlier taxable gifts are added to the taxable estate to form the federal base. Entered DSUE is added to the federal basic exclusion.
If the federal base exceeds the applicable exclusion, the calculator applies its progressive federal schedule, which contains rates from 18% through 40%. Let SF represent that coded schedule.
Mississippi estate tax and Mississippi inheritance tax are both set to zero. Federal GST tax is calculated separately from direct skips remaining after the entered GST exemption.
Worked Example
Consider a hypothetical 2025 estate with $10,000,000 of real property, $5,000,000 of financial assets, and $5,000,000 of retirement assets. Gross estate is $20,000,000. Assume $300,000 of debts, $20,000 of funeral expenses, a 2% attorney and executor fee, $400 of court costs, and no other deductions.
The fee base is $19,700,000. A 2% fee equals $394,000. Adding $400 of court costs produces $394,400 of administration costs. Total deductions are $714,400, leaving a net estate of $19,285,600.
With no marital deduction, charitable deduction, earlier taxable gifts, DSUE, gifting reduction, or GST tax, the federal base is $19,285,600. The calculator’s 2025 exclusion is $13,990,000. Its federal schedule produces $7,660,040 of tentative tax and $5,541,800 of applicable credit. Federal estate tax is $2,118,240. Mississippi tax is $0, so total transfer tax is $2,118,240 and the displayed effective rate is 10.59%.
How to Use the Mississippi Estate Tax Calculator
- Select estate tax, larger-estate headroom, or years-of-gifting mode.
- Choose the year of death from 2024, 2025, or 2026.
- Select the Mississippi county of domicile used for the displayed Chancery Court venue.
- Enter real property, financial accounts, retirement assets, life insurance, and business or other property.
- Enter debts, funeral expenses, the attorney and executor fee percentage, court costs, and casualty or theft losses.
- Set marital status and, when relevant, spouse citizenship or QDOT status. Enter spousal and charitable bequests.
- Enter earlier taxable gifts, federal DSUE, direct skips, and the GST exemption allocated.
- For gifting mode, enter the number of donees, gift per donee, unrealized gain, heirs’ capital-gains rate, NIIT choice, and maximum years to test.
- Check the required acknowledgment and select the calculation button.
Estate mode displays total transfer tax due. Headroom mode displays a verdict, remaining federal headroom, and a tax-free ceiling. Gifting mode displays the modeled years required, “None needed” when baseline transfer tax is already zero, or a result stating that more than the selected maximum years are required.
Important Assumptions and Result Details
The detailed output shows gross estate, deductions, net estate, marital and charitable deductions, planned gifting, taxable estate, federal tentative tax and credit, federal estate tax, Mississippi estate and inheritance tax, taxable direct skips, GST tax, total transfer tax, effective rate, marginal federal rate, and the calculator’s stated binding factor.
Federal Headroom and Tax-Free Ceiling
Federal headroom equals the applicable federal exclusion minus the federal base, with negative results replaced by zero. The tax-free ceiling then adds that headroom to the current gross estate.
The effective transfer-tax rate divides total transfer tax by gross estate. If gross estate is zero, the effective rate is zero. Currency outputs are rounded to the nearest whole dollar. The effective rate is displayed with two decimal places.
The calculator displays a 40% marginal federal rate whenever the federal base exceeds the applicable exclusion. Otherwise, it displays 0%. This is the tool’s coded marginal-rate display rule.
Mississippi Tax and Filing Results
The calculation always sets Mississippi estate tax and inheritance tax to $0. The interface states that Mississippi’s former estate tax was repealed for deaths on or after January 1, 2005, but explicitly marks that date for verification. It also displays “No” for a Mississippi estate-tax return.
The federal Form 706 indicator becomes “Yes” when the federal base is greater than the applicable federal exclusion. The calculator also displays a nine-month federal filing deadline and states that Form 4768 provides a six-month filing extension but does not extend payment. These are coded informational statements and should be verified before reliance.
The selected Mississippi county controls the Chancery Court venue shown in the output. It does not change the federal estate-tax arithmetic.
Small-Estate Indicator
The calculator uses a $50,000 small-estate threshold that it flags for verification. However, its actual internal test does not use the full net estate. It adds financial accounts, retirement assets, life insurance, and business or other property. Real property is excluded from this comparison.
Elective-Share Estimate
For a married decedent, the code calculates an elective-share estimate as 0.3333 times the net estate. The interface describes this as approximately one-third of the net estate and flags the Mississippi elective-share treatment for verification.
The calculator also identifies Mississippi as a common-law state and states that it does not halve community property or apply a double step-up. Values entered in the asset fields therefore flow into gross estate without either adjustment.
How the Gifting Solver Works
The gifting solver searches for the first whole number of years that reduces total calculated transfer tax to zero. It can expand the test period up to 60 times and then performs 90 bisection iterations before rounding the solution upward. The maximum testing horizon entered by the user is limited to 1 through 200 years.
The effective annual gift per donee is capped at the coded annual exclusion. An entered gift above that amount does not automatically increase the estate reduction, and the excess is not automatically added to earlier taxable gifts. Earlier taxable gifts come only from the separate prior-gifts field.
The number-of-donees field is marked as required in gifting mode, but zero remains inside the coded numeric range. If zero donees are entered, the gift reduction remains zero.
Gifting reduces the modeled taxable estate but does not reduce the separate direct-skips input. A remaining GST tax can therefore prevent the gifting solver from ever reaching zero total transfer tax within the selected horizon.
Gifting Projections and Unrealized Gain
The calculator displays tax remaining after one, two, and three years of gifting, plus cumulative tax saved after three years. It also calculates the effective annual gift as the capped gift per donee multiplied by the number of donees.
The form accepts unrealized gain in gifted assets, a 0%, 15%, or 20% long-term capital-gains rate, and an optional 3.8% NIIT setting. However, the supplied calculation result object does not include the entered unrealized-gain value even though the result renderer tries to read it.
Because of that implementation mismatch, the displayed deferred-capital-gains cost resolves to $0 in this version. The displayed net-benefit calculation also resolves to $0 instead of combining tax savings with the entered unrealized gain. These two outputs should therefore not be interpreted as working estimates in the supplied version.
Net to Other Heirs
The “Net to other heirs” result starts with net estate and subtracts the modeled marital deduction, charitable deduction, and total transfer tax. The result cannot fall below zero. Planned gifting is not separately subtracted from this particular output.
Most monetary fields accept values from $0 through $100,000,000. The attorney and executor fee accepts 0% through 25%. The donee count accepts 0 through 200, and maximum years accepts 1 through 200. County selection and the acknowledgment are required before calculation.
This calculator provides an estimate based on user-entered assumptions and its implemented rules. Actual tax liability, filing requirements, probate procedures, deductions, gifting consequences, and spousal rights may differ. The Mississippi repeal date, elective-share treatment, and small-estate figure are specifically marked for verification, so the output is not a substitute for legal, tax, or financial advice.
Estate Tax Calculators for All 50 U.S. States
Frequently Asked Questions
Does this calculator charge Mississippi estate tax?
No. Mississippi estate tax is hard-coded as $0 for all supported 2024 through 2026 death years, and Mississippi inheritance tax is also $0. The calculator states that the former estate tax was repealed for deaths on or after January 1, 2005, while marking that exact date for verification.
What federal estate tax exclusions does the calculator use?
The calculator uses $13,610,000 for 2024, $13,990,000 for 2025, and $15,000,000 for 2026. Any entered DSUE from a predeceased spouse is added to the selected year’s basic exclusion to create the federal applicable exclusion.
How does DSUE affect the Mississippi calculation?
DSUE affects only the federal exclusion. The calculator has no Mississippi estate-tax exclusion to increase or port because the state estate-tax amount is fixed at zero. Its result section therefore describes Mississippi portability as not applicable.
How does the calculator handle marital and charitable deductions?
The marital deduction applies when the decedent is marked married and the surviving spouse is a U.S. citizen or the bequest passes to a QDOT. It cannot exceed the net estate. The charitable deduction is then limited to the amount remaining after the marital deduction.
How is federal GST tax calculated?
The calculator subtracts the entered GST exemption from direct skips. A negative result becomes zero. Any positive taxable amount is multiplied by 40%, and that GST amount is added to federal estate tax when total transfer tax is calculated.
Why might gifting fail to eliminate the tax?
Annual-exclusion gifting reduces the modeled taxable estate but does not reduce direct skips used for the separate GST calculation. The gift amount may also be too small to eliminate federal estate tax within the selected maximum number of years. Either condition can keep the solver from reaching zero total transfer tax.
How does the calculator decide whether the estate is small?
The code adds financial accounts, retirement assets, includible life insurance, and business or other property and compares that amount with $50,000. Real property is excluded from this specific test. The calculator itself marks the $50,000 small-estate figure for verification.