Iowa Estate Tax Calculator
Estimate the federal estate tax on an Iowa decedent’s estate and confirm that Iowa itself charges nothing. Iowa’s inheritance tax was fully repealed for decedents dying on or after January 1, 2021, and Iowa never imposed a separate state estate tax beyond the federal pick-up credit, so for 2024-2026 deaths Iowa tax is $0. Iowa has no gift tax. Distinctive rules modeled: the repealed inheritance tax, the spousal elective share (one-third of real property plus one-half of personal property), and the small-estate affidavit.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.
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%.
Exclusion and portability
Gross estate to taxable estate
Tax computation
What heirs receive
Iowa succession
Gifting analysis
Three-year gifting projection
How it works
- Iowa charges nothing for recent deaths. The Iowa inheritance tax (Iowa Code ch. 450) was fully repealed for decedents dying on or after January 1, 2021, and the former federal pick-up credit is zero for deaths after 2004, so no Iowa estate or inheritance tax return is filed. There is no Iowa 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.
- No community property. Iowa is a common-law state, so no halving of community assets and no double basis step-up.
- Portability is federal only. A surviving spouse may inherit the unused federal exclusion (DSUE) with a timely Form 706 election; there is no Iowa state exclusion to port.
- Elective share. A surviving spouse may elect one-third of the decedent’s real property plus one-half of the personal property under Iowa Code 633.238 (VERIFY); this calculator approximates it on the entered gross real and personal asset values.
- Small estates skip full probate. The small-estate affidavit / simplified administration under Iowa Code 635.1 is available where estate value 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
- Iowa Code ch. 450 (inheritance tax, fully repealed for decedents dying on or after January 1, 2021) and the former federal pick-up credit (zero for deaths after 2004); Iowa Department of Revenue guidance confirming no state estate, inheritance or gift tax for those deaths.
- Iowa Code 633.238 (spousal elective share of one-third of real property and one-half of personal property; VERIFY); Iowa Code 635.1 (small-estate affidavit / simplified administration, $100,000 limit; VERIFY current figure); Iowa probate venue in the District Court of the county of domicile (99 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 9,000,000; admin 172,400; deductions 587,400; net estate 8,412,600; TE 8,412,600 below 13,990,000. Federal $0, Iowa $0, TOTAL $0. Headroom 5,577,400. Affidavit NOT available (personal property 5,000,000).
Gross 20,000,000; admin 390,400; deductions 910,400; net estate 19,089,600; TE 19,089,600 above 13,990,000. Federal tentative 7,581,640 less credit 5,541,800 = FEDERAL 2,039,840. Iowa $0. TOTAL 2,039,840. Effective 10.20%.
Gross 26,000,000; admin 512,400; deductions 937,400; net estate 25,062,600; less marital 8,000,000 = TE 17,062,600; federal exclusion 15,990,000. Federal tentative 6,770,840 less credit 6,341,800 = FEDERAL 429,040. Iowa $0. TOTAL 429,040. Elective share (1/3 real + 1/2 personal) = 10,500,000. Headroom 0; ceiling 26,000,000.
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.
Gross 80,000; admin 1,840; deductions 8,840; net estate 71,160; TE 71,160. Federal $0, Iowa $0, TOTAL $0. Affidavit available (personal property 80,000 at or below 100,000). Elective share (1/2 of personal) = 40,000.
Estimates only. Not legal, tax or financial advice. Verify the current Iowa Code and federal rules before relying on any figure.
What Is the Iowa Estate Tax Calculator?
The Iowa Estate Tax Calculator is an estate-planning tool that estimates transfer taxes using the estate values and other information you enter. It adds real property, financial accounts, retirement assets, includible life insurance, business interests, and other property. It then accounts for modeled debts, administration expenses, qualifying marital and charitable deductions, prior taxable gifts, portability, and generation-skipping transfers.
For the 2024 through 2026 death years available in this calculator, Iowa estate tax and Iowa inheritance tax are calculated as $0. The main potential tax is federal estate tax when the federal tax base exceeds the applicable federal exclusion. The calculator can also estimate federal GST tax on taxable direct skips.
In short, the Iowa estate tax calculator estimates how much federal transfer tax may apply to an Iowa decedent’s estate while separately confirming the $0 Iowa estate and inheritance tax modeled by the code. It also displays the taxable estate, exclusion headroom, deductions, amounts for heirs, filing information, and selected Iowa succession figures.
How the Iowa Estate Tax Calculation Works
The calculation starts by adding the five asset categories entered in the tool to determine the gross estate.
Here, G is the gross estate, R is real property, F is bank, brokerage, and cash accounts, A is retirement accounts and annuities, L is includible life insurance, and B is business interests, personal property, and other assets.
Administration costs are estimated from the attorney and executor fee percentage plus entered court costs. The percentage applies to the gross estate minus debts, with that fee base not allowed below zero.
The calculator subtracts debts, funeral costs, administration costs, and casualty losses. The resulting net estate cannot fall below zero. It then subtracts an allowed marital deduction and charitable deduction. In gifting calculations, eligible planned annual-exclusion gifts are also removed. Earlier taxable gifts are added back to form the federal tax base.
The federal exclusion is $13,610,000 for 2024, $13,990,000 for 2025, and $15,000,000 for 2026 in the calculator. Entered DSUE, or deceased spousal unused exclusion, is added to that amount. If the federal base exceeds the resulting exclusion, the calculator applies its progressive 18% to 40% federal schedule and subtracts the tax calculated on the applicable exclusion.
For example, use the calculator’s 2025 test case with a $20,000,000 gross estate, $500,000 of debts, $20,000 of funeral expenses, a 2% attorney and executor fee, and $400 of court costs. Administration costs equal $390,400. Total deductions are $910,400, leaving a $19,089,600 taxable estate. The calculator produces $7,581,640 of tentative federal tax and a $5,541,800 applicable credit, resulting in $2,039,840 of federal estate tax. Iowa tax remains $0.
Federal GST tax is calculated separately as 40% of direct skips remaining after the entered GST exemption. Because this model covers several tax components, its total transfer tax can include both federal estate tax and GST tax.
How to Use the Iowa Estate Tax Calculator: Step by Step
- Choose whether you want to calculate estate tax, test whether a larger estate would be taxed, or find the years of gifting needed to eliminate the modeled tax.
- Select the year of death from 2024, 2025, or 2026, then choose the Iowa county of domicile used for probate venue.
- Enter real property, bank and brokerage accounts, retirement accounts and annuities, includible life insurance, and business interests or other property.
- Enter debts, funeral expenses, the attorney and executor fee percentage, court costs, and any casualty or theft losses during administration.
- Enter marital information and any spouse or charitable bequests. The marital deduction requires a qualifying citizen spouse or a selected QDOT in the calculator.
- Add earlier taxable gifts, DSUE, direct skips, and allocated GST exemption when applicable.
- For gifting analysis, enter the number of donees, annual gift per donee, unrealized gain, heirs’ capital gains rate, NIIT choice, and maximum years to test.
- Check the required acknowledgment and calculate the result.
The results show the total transfer tax and break it into federal estate tax, Iowa tax, and GST tax. The tool also reports the gross and taxable estate, deductions, exclusion headroom, effective rate, amounts for other heirs, elective share estimate, small-estate status, and federal filing information.
What Your Iowa Estate Tax Calculator Result Means
Iowa Tax Versus Federal Estate Tax
The most important distinction is between Iowa tax and federal tax. The calculator sets Iowa estate tax and inheritance tax to zero for all three available death years. A large Iowa estate can still generate federal estate tax because the federal calculation is separate.
| Year of Death | Federal Basic Exclusion Used | Iowa Estate Tax | Iowa Inheritance Tax |
|---|---|---|---|
| 2024 | $13,610,000 | $0 | $0 |
| 2025 | $13,990,000 | $0 | $0 |
| 2026 | $15,000,000 | $0 | $0 |
Portability and Marital Deductions
The calculator adds entered DSUE to the basic federal exclusion. It also permits a marital deduction when the decedent was married and the surviving spouse is a U.S. citizen, or when a bequest to a non-citizen spouse passes to a QDOT. The allowed marital deduction cannot exceed the calculated net estate.
Iowa Elective Share and Small Estates
For a married decedent, the calculator estimates a spousal elective share as one-third of entered gross real property plus one-half of entered gross personal property. Personal property for this calculation consists of financial accounts, retirement assets, life insurance, and business or other property.
The code also marks an estate as small when the gross estate is $100,000 or less. The calculator itself flags the Iowa statutory figures for elective share and simplified administration as items that should be verified against current law before relying on them.
Gifting Analysis
Gifting mode tests annual gifts against the modeled federal tax. The calculator uses an annual exclusion of $18,000 per donee for 2024 and $19,000 for 2025 and 2026. For estate reduction, the effective annual gift per donee is capped at that annual exclusion. The solver searches within the selected maximum horizon, which can range from 1 to 100 years.
The gifting analysis also estimates a deferred capital-gains cost from carryover basis using entered unrealized gain, the selected long-term capital gains rate, and the 3.8% NIIT when selected. This helps show that reducing an estate through gifts can have a separate income-tax consequence in the calculator’s model.
These results are estimates, not legal, financial, or tax advice. Actual federal filing requirements, deductions, asset valuations, portability elections, GST treatment, basis rules, and probate treatment can depend on facts not captured here. Tax laws and thresholds can also change. Confirm important estate decisions and current statutory rules with qualified professionals and current government guidance.
Estate Tax Calculators for All 50 U.S. States
Frequently Asked Questions
Does Iowa have an estate tax?
The calculator applies $0 of Iowa estate tax for deaths in 2024, 2025, and 2026. It explains that Iowa does not impose a separate current estate tax in its model. However, federal estate tax can still apply when the calculated federal tax base exceeds the applicable federal exclusion.
Does Iowa have an inheritance tax?
Not for the death years covered by this calculator. The code treats Iowa inheritance tax as repealed for decedents dying on or after January 1, 2021. As a result, the calculator returns $0 of Iowa inheritance tax for its available 2024, 2025, and 2026 calculations.
What is the federal estate tax exemption for an Iowa estate?
The calculator uses a federal basic exclusion of $13.61 million for 2024, $13.99 million for 2025, and $15 million for 2026. If DSUE from a predeceased spouse is entered, the calculator adds it to the basic exclusion when determining the estate’s total applicable federal exclusion.
How does the Iowa estate tax calculator calculate administration costs?
It applies the entered attorney and executor fee percentage to the gross estate minus debts, with the fee base limited to no less than zero. It then adds entered District Court filing and other costs. Those administration costs join debts, funeral expenses, and qualifying casualty losses as modeled deductions.
How does portability affect the estate tax calculation?
The calculator adds entered DSUE to the federal basic exclusion. DSUE represents unused federal exclusion ported from a predeceased spouse. The tool notes that federal portability requires a timely Form 706 election. It does not calculate any Iowa portability amount because its model contains no Iowa estate tax exclusion to port.
How does the calculator estimate generation-skipping transfer tax?
The calculator subtracts the entered GST exemption allocation from direct skips to grandchildren or later generations. Any amount below zero is reset to zero. It then applies a 40% federal GST rate to the remaining taxable direct skips and adds that GST amount to total transfer tax.
How accurate is the Iowa estate tax calculator?
The calculator follows the formulas and thresholds coded into the tool, so its result depends on the values you enter and its stated assumptions. It is still an estimate. It cannot capture every valuation, deduction, election, ownership arrangement, tax rule, probate issue, or change in law that may affect a real estate.