On the ordinary retirement profile — $34,000 of Social Security and $61,000 of plan distributions — Idaho takes $2,247 a year in state income tax.
That is the number people compare, and it is the smallest of three. Property tax adds about $2,517 on the state's $503,400 median home, and insurance another $2,240. The three together come to $7,004, placing Idaho 23rd of 50.
A note before you start. This is general education, not tax advice. Every Idaho figure comes from this site's own fifty-state income-tax dataset and its retirement tax engine, computed for a single filer aged 70 unless stated otherwise; property tax, median home price and insurance figures come from the site's core state dataset. Rates are for tax year 2026. Property tax is assessed locally in most states, so the effective rate here is a statewide figure rather than your county's.
1. What Idaho takes from retirement income
| Income stream | Idaho tax |
|---|---|
| Social Security | $0 on $40,000 |
| 401(k), 403(b), 457(b), traditional IRA | $2,247 on the typical profile |
| Private employer pension | $1,664 on $50,000 |
| Public and federal government pension | $1,664 on $50,000 |
| Military retired pay | $1,664 on $50,000 |
On Social Security. Fully exempt, with no threshold, no phase-out and no age condition. Idaho begins from federal adjusted gross income, so any federally taxable portion of benefits enters the Idaho base and is then subtracted: Idaho Code 63-3022(l) directs the taxpayer to deduct any amounts included in gross income under IRC section 86, which is the federal provision that makes a portion of Social Security and Railroad Retirement benefits taxable. The subtraction is claimed on Form 39R, Part B.
On 401(k) and IRA distributions. Taxed in full at 5.3%. Idaho has NO general exclusion for distributions from a 401(k), 403(b) or traditional IRA, and no age at which one becomes available. The Idaho retirement benefits deduction does not reach them, and assuming otherwise is the standard Idaho error: that deduction is granted by enumerated System, not by age or account type, and its list contains only federal Civil Service and Foreign Service retirement annuities, the State of Idaho firefighters' retirement fund, Idaho city police officer retirement benefits, and U.S. military retirement. A private-sector 401(k) or an IRA appears nowhere in it. An Idaho retiree aged 70 drawing an ordinary 401(k) pays the full rate on every dollar.
2. The rule that decides your Idaho bill
Three different answers, and the split is by which retirement System paid the benefit rather than by public-versus-private in the ordinary sense. private pensions are fully taxed; Idaho grants no private pension deduction. It does not cover persi generally - an ordinary Idaho state or local government employee's PERSI pension is not on the enumerated list, so most Idaho public employees get nothing from this provision. military is also a partial exclusion, under the same section and subject to the same dollar cap, but with its own and broader eligibility test: a military retiree qualifies if disabled, OR age 62 or older, OR having earned sufficient employment income during the tax year - which is a lower bar than the age-65 rule that governs the civil service, firefighter and police categories. The age trigger recorded here (65) is the general rule and does not govern the military entry. General eligibility: age 65 or older, or age 62 or older and classified as disabled. The deduction is reduced dollar for dollar by Social Security and Railroad retirement benefits received by either spouse, and the allowable amount is the lesser of the figure so computed or the total retirement benefits received - so a retiree whose Social Security equals or exceeds the cap gets nothing.
Idaho is a poor state for an ordinary private-sector retiree and a good one for a narrow set of federal and public-safety retirees. Social Security is exempt, but a 401(k), an IRA and a private pension are all taxed at the full 5.3%, and even the enumerated deduction is clawed back dollar for dollar by Social Security.
PERSI, the retirement system covering most Idaho state and local government employees, is not among the systems Idaho Code 63-3022A enumerates. Reading publicPension as 'Idaho government pensions are excluded' would be wrong for the large majority of Idaho public retirees.
3. What Idaho charges at three income levels
The same state, three retirements. All figures are for a single filer aged 70.
| Profile | Income | Idaho tax | Effective rate |
|---|---|---|---|
| Modest | $24,000 Social Security + $31,000 distributions | $657 | 1.2% |
| Typical | $34,000 Social Security + $61,000 distributions | $2,247 | 2.4% |
| Affluent | $40,000 + $100,000 + $40,000 other | $6,434 | 3.6% |
The marginal rate at the typical profile is 5.3%. That is what an extra dollar of distribution costs — a larger number than the 2.4% effective rate, and the one that matters when deciding how much to withdraw.
A married couple with $48,000 of Social Security and $62,000 of distributions pays $1,314.
Run your own income against Idaho and every other state4. Property tax, and why it lands harder in retirement
An effective rate of 0.5% on the state's $503,400 median home is about $2,517 a year.
For a retiree this is a harder cost than income tax, and the reason is structural: property tax is levied on the house, while retirement income falls. A bill sized to a working income arrives every year after the income has gone.
It is also assessed locally almost everywhere, so a statewide effective rate conceals real variation between counties. Treat the figure above as the state's shape rather than as your bill.
Idaho does have a homestead provision, and it is the one lever on this line worth understanding.
Idaho has two distinct 'homestead' protections that are easy to conflate. (1) Property-tax Homeowner's Exemption (Idaho Code 63-602G): exempts the lesser of $125,000 of assessed value or 50% of assessed value from property tax (school/local levies), applied automatically once approved and reset each Jan 1 for the tax year of a complete application; must be owner-occupied as primary residence. This figure was raised from $100,000 effective for the 2026 tax year. (2) Creditor/bankruptcy homestead exemption (Idaho Code 55-1003, Title 55 Ch. 10): protects up to $175,000 of equity in an owner-occupied home from most creditors' judgments and in bankruptcy — a asset-protection statute, not a tax break. The two figures ($125,000 vs $175,000) serve entirely different purposes and are commonly confused in secondary sources.
Two things about homestead rules catch people out after a move. They almost always require the property to be your primary residence, which a snowbird splitting the year has to be able to demonstrate. And several states require an application to the county rather than granting it automatically — a benefit you qualify for and never claimed is worth nothing.
5. Insurance, the line nobody prices
Average home insurance in Idaho: $2,240 a year — 20th cheapest of the fifty states.
This is the line almost no retirement comparison includes, and across the country it varies more than income tax does: from Hawaii's $900 to Florida's $8,375, a ninefold spread.
For a retiree it behaves like a second property tax. It rises independently of income, a fixed-income household absorbs the whole increase, and it is a condition of the mortgage if you still have one.
6. What retiring in Idaho actually costs
Income tax on the typical retirement profile, plus property tax and insurance on each state's own median home. Idaho is shown against its own neighbours in the ranking, and against the extremes.
| State | Income tax | Property tax | Insurance | Total |
|---|---|---|---|---|
| Wyoming | $0 | $2,083 | $1,900 | $3,983 |
| Nevada | $0 | $2,489 | $2,025 | $4,514 |
| Washington | $0 | $5,191 | $1,650 | $6,841 |
| Indiana | $1,770 | $2,128 | $2,985 | $6,883 |
| Alabama | $2,785 | $1,072 | $3,140 | $6,997 |
| Idaho | $2,247 | $2,517 | $2,240 | $7,004 |
| Iowa | $0 | $3,275 | $3,765 | $7,040 |
| Missouri | $1,930 | $2,632 | $2,905 | $7,467 |
| North Carolina | $1,925 | $2,525 | $3,025 | $7,475 |
| Minnesota | $4,937 | $3,750 | $3,615 | $12,302 |
| Connecticut | $4,475 | $8,779 | $2,690 | $15,944 |
Idaho comes to $7,004, 23rd of 50.
Income tax is 32% of that total. It is the line every comparison leads with and, here, not the largest of the three.
One large caveat, and it matters. Each row uses that state's own median home, and those differ a great deal. So this compares the typical house in each state, not the same house in each state — buying below a state's median improves its figure materially.
7. No special treatment, and what that simplifies
Idaho gives retirement income no special treatment. Distributions are taxed as ordinary income at the ordinary schedule, with no age trigger, no source distinction and no phase-out to plan around. Taxed in full at 5.3%. Idaho has NO general exclusion for distributions from a 401(k), 403(b) or traditional IRA, and no age at which one becomes available. The Idaho retirement benefits deduction does not reach them, and assuming otherwise is the standard Idaho error: that deduction is granted by enumerated System, not by age or account type, and its list contains only federal Civil Service and Foreign Service retirement annuities, the State of Idaho firefighters' retirement fund, Idaho city police officer retirement benefits, and U.S. military retirement. A private-sector 401(k) or an IRA appears nowhere in it. An Idaho retiree aged 70 drawing an ordinary 401(k) pays the full rate on every dollar. That simplicity cuts both ways. There is nothing to lose by withdrawing more in one year than another, and nothing to gain by waiting — which makes Idaho an unusually clean state to plan a withdrawal order in, even though it is not a generous one.
8. What a Roth conversion costs in Idaho
Converting $50,000 to a Roth costs an extra $2,650 in Idaho tax — 5.3 cents on the dollar.
| Converted | Extra Idaho tax | Cost per dollar |
|---|---|---|
| $50,000 | $2,650 | 5.3% |
| $100,000 | $5,300 | 5.3% |
These are computed, not read off the bracket table, which matters because a conversion large enough to be worth making usually leaves the bracket it started in.
The state's share is the part you can move. Convert in a year you are resident somewhere with no income tax and it is zero; convert here and it is 5.3%. The federal tax is due either way.
9. What part-time work costs here
$20,000 of part-time work costs an extra $1,060 in Idaho tax — an effective 5.3% on the earnings.
Compare that with the 5.3% a Roth conversion costs. The state treats the two identically, which keeps the decision a non-tax one.
Two federal rules apply on top and neither depends on your state. Earnings can raise the taxable share of Social Security, and claiming before full retirement age exposes you to the federal earnings test.
10. The order to draw your accounts in
The order you draw accounts in is worth real money, and the right order depends on the state.
Idaho applies the same treatment whenever you withdraw, so the order is a federal question rather than a state one — with the exception that the marginal rate is 5.3%, and a year of unusually high withdrawals pays that on the excess.
Smoothing withdrawals across years therefore beats lumping them, modestly. Take a large one-off distribution in a single year and it climbs the bracket schedule; spread the same amount over three and more of it stays low.
Required minimum distributions overrule all of this from 73 onward. Once they begin you must take the calculated amount whether the order suits you or not, which is the argument for drawing down or converting the pre-tax balance in the years before.
11. Or move across the state line
For most people the real alternative to Idaho is not Wyoming — it is the state on the other side of the line, near the same family, the same doctors and the same weather.
| State | Income tax | Property tax | Insurance | Total | Rank |
|---|---|---|---|---|---|
| Wyoming | $0 | $2,083 | $1,900 | $3,983 | 1 |
| Nevada | $0 | $2,489 | $2,025 | $4,514 | 2 |
| Washington | $0 | $5,191 | $1,650 | $6,841 | 20 |
| Idaho | $2,247 | $2,517 | $2,240 | $7,004 | 23 |
| Utah | $4,228 | $2,672 | $1,810 | $8,710 | 34 |
| Oregon | $4,764 | $4,223 | $2,065 | $11,052 | 42 |
| Montana | $4,007 | $3,801 | $3,265 | $11,073 | 43 |
Wyoming is the cheapest of the group at $3,983, $3,021 below Idaho. Whether that is worth a move is a question about your life rather than your spreadsheet — but it is the comparison worth running, because it is the one you could actually act on.
One thing this table cannot show is the county. Property tax is set locally, and the spread inside a single state is routinely wider than the gap between two neighbouring states. A border move to a cheaper state and an expensive county can leave you worse off.
12. If you are moving to Idaho from somewhere else
The eight most populous states people leave, measured against Idaho on the same three lines.
| Moving from | Their total | Idaho | Difference |
|---|---|---|---|
| California | $9,520 | $7,004 | $2,516 cheaper |
| Texas | $9,745 | $7,004 | $2,741 cheaper |
| Florida | $11,690 | $7,004 | $4,686 cheaper |
| New York | $10,287 | $7,004 | $3,283 cheaper |
| Pennsylvania | $6,465 | $7,004 | $539 dearer |
| Illinois | $8,391 | $7,004 | $1,387 cheaper |
| Ohio | $6,380 | $7,004 | $624 dearer |
| Georgia | $6,033 | $7,004 | $971 dearer |
Idaho is cheaper than 5 of these eight. Which means the answer genuinely depends on where you are starting from.
A move is not free, and this table does not price it. Transaction costs on both houses run to several per cent of the sale price, and at typical values that is often more than the first two or three years of the saving.
Idaho charges no transfer tax on the purchase, which is one closing cost you will not meet here and do meet in most states. Closing costs here run about 2% to 5% of the price — $10,068 to $25,170 on the median home, which is the real entry fee for the annual saving this article has been describing.
13. Where these Idaho figures are approximate
Every income tax figure above comes from this site's own Idaho record, and that record notes its own limits. They are reproduced here rather than left in the dataset, because a reader who falls into one of these cases is being quoted a number that is wrong for them.
- public is a partial exclusion but a narrow one, and the label overstates it: the Idaho Code 63-3022A deduction covers federal Civil Service and Foreign Service retirement annuities, benefits from the State of Idaho firefighters' retirement fund, and Idaho city police officer retirement benefits paid from a city fund or the public employee retirement system.
- Because the retirement benefits deduction is offset by Social Security received, a calculator that applies the published maximum without the offset will overstate it for nearly every real retiree - the same trap Indiana's civil service annuity deduction sets.
None of this affects the property tax or insurance lines, which come from a separate dataset and are not modelled.
If you are in one of the cases above, treat the income tax figure as the shape rather than the amount and get the number from a preparer who can see your actual return.
14. What Idaho does not exempt you from
The federal system, entirely. This is the commonest misunderstanding about state retirement taxation, and it is worth stating plainly.
Required minimum distributions still apply. The amount is federal — your prior-year balance divided by an IRS life expectancy factor — and identical in all fifty states. A state changes what the distribution costs you, not whether you must take it.
Social Security is still federally taxable, on the federal provisional-income calculation, whatever your state does with it.
IRMAA still applies, with its two-year lag. A large conversion or distribution raises a Medicare premium two years later regardless of address.
And capital gains are still federally taxed. What Idaho adds on top is a separate question from what the federal system takes.
15. Establishing that you actually live here
Any state tax advantage is worth nothing until Idaho is your domicile, and the state you left may disagree about when that happened.
High-tax states audit departing residents. The question is not whether you own a home here; it is whether you genuinely abandoned the old domicile. Days spent in each state, voter registration, vehicle registration, where your doctors are and where you claim a homestead all bear on it.
The snowbird case is the risky one. Splitting the year between two states while keeping a home in both is exactly the profile a residency audit is built for. If a plan depends on the saving, count the days from the first year rather than reconstructing them afterwards.
16. Who Idaho actually suits
It suits an affluent retiree least. At the affluent profile the bill is $6,434, and whatever exclusion helps a modest income has stopped helping by then.
17. What to check before you decide
Get your county's actual property tax rate, not the state average. Property tax is levied locally almost everywhere, and the spread inside a state is often wider than the spread between states.
Get a real insurance quote on a real address. $2,240 is the state average; construction, roof age and exposure move it a long way.
Work out your own income tax rather than using the profile above. $95,000 split one way is not $95,000 split another, and in Idaho the mix between Social Security and distributions changes the answer.
And check what your current state actually charges you before assuming it is worse. On these three lines the ranking surprises people in both directions.
Frequently asked questions
Does Idaho tax Social Security? No. Fully exempt, with no threshold, no phase-out and no age condition. Idaho begins from federal adjusted gross income, so any federally taxable portion of benefits enters the Idaho base and is then subtracted: Idaho Code 63-3022(l) directs the taxpayer to deduct any amounts included in gross income under IRC section 86, which is the federal provision that makes a portion of Social Security and Railroad Retirement benefits taxable. The subtraction is claimed on Form 39R, Part B.
Does Idaho tax 401(k) or IRA withdrawals? Taxed in full at 5.3%. Idaho has NO general exclusion for distributions from a 401(k), 403(b) or traditional IRA, and no age at which one becomes available. The Idaho retirement benefits deduction does not reach them, and assuming otherwise is the standard Idaho error: that deduction is granted by enumerated System, not by age or account type, and its list contains only federal Civil Service and Foreign Service retirement annuities, the State of Idaho firefighters' retirement fund, Idaho city police officer retirement benefits, and U.S. military retirement.
What about pensions — private, government, or military? A $50,000 pension costs $1,664 if private, $1,664 if a government pension, and $1,664 if military retired pay.
What does retiring in Idaho actually cost? Income tax of $2,247 on the typical profile, plus about $2,517 of property tax and $2,240 of insurance on the median home — $7,004, which is 23rd of 50.
Is Idaho a cheap state to retire in? On these three lines it ranks 23rd of 50. Whether that makes it cheap for you depends far more on the house than on the tax code.
What does a Roth conversion cost in Idaho? An extra $2,650 in state tax on $50,000 converted, and $5,300 on $100,000. That is 5.3% of the amount converted, on top of the federal tax.
Does part-time work get taxed differently from my 401(k) withdrawals? $20,000 of part-time earnings costs $1,060 in state tax, an effective 5.3%.
Would a neighbouring state be cheaper than Idaho? Wyoming is the cheapest of Idaho and its neighbours at $3,983 against Idaho's $7,004.
Do required minimum distributions change if I move here? No. The required amount is a federal calculation and identical in every state. What changes is what the distribution costs once taken.
Does this article include local income tax? No local income tax applies to retirement income in Idaho on the figures used here.
Will Idaho's treatment still apply in ten years? State legislatures revise retirement taxation regularly — several states have changed theirs in the past three years. Figures here are for tax year 2026 and are worth re-checking before a move.
What to do next
Two numbers decide this and neither is the one in the headline: your county's actual property tax rate, and a real insurance quote on a real address.
- Retirement state tax calculator — what any state charges on your income, cited per state
- RMD calculator — the distribution you must take, which no state changes
- Home insurance premium estimator — the line this article says decides it
- The Relocation Tax Playbook — establishing domicile, and the states that contest it