IDAHO PAYCHECK CALCULATOR
Idaho just wrapped up one of the fastest income tax cuts of any state in the country. In 2021 the top rate on Idaho paychecks stood at 6.925% across a six-bracket system. By 2026, after three separate bills, that whole structure is gone, replaced by one flat 5.3% rate that applies to every worker in the state regardless of what they earn. Governor Brad Little signed the last cut, House Bill 40, in March 2025, and state officials called it the largest income tax reduction in Idaho’s history. For a paycheck calculator, that simplicity is a gift: no brackets to climb through, no marriage penalty on the state line, just one rate applied to your taxable income.
Every paycheck in Idaho carries the same core stack of deductions: federal income tax withheld per your W-4, Social Security at 6.2%, Medicare at 1.45%, and the flat 5.3% state tax. There’s no county or city income tax added on top, and no state disability or paid family leave deduction to worry about, which puts Idaho in a smaller category than states like Oregon or California. If you’re weighing a move, it’s also worth checking how Idaho stacks up against its neighbors, including Utah, Nevada, and Montana, all of which tax paychecks differently enough to matter on a real budget.
Calculate Your Idaho Take-Home Pay
Enter your pay details below. This tool uses 2026 federal tax brackets, the 2026 Social Security wage base, and Idaho’s flat 5.3% state rate.
Gross annual pay used for this estimate: $0. Figures assume the standard deduction and no pre-tax deductions (401(k), HSA, health premiums), which would lower your taxable income further.
Every Deduction on an Idaho Paycheck
- Federal income tax: Withheld based on your W-4 elections, filing status, and the 2026 IRS brackets, which run from 10% to 37%. The 2026 standard deduction is $16,100 for single filers, $32,200 for married filing jointly, and $24,150 for head of household.
- Social Security tax: A flat 6.2% on wages up to the 2026 wage base of $184,500. Once your year-to-date earnings cross that number, this deduction stops for the rest of the year and the withholding on your check goes up.
- Medicare tax: 1.45% on all wages with no cap, plus an extra 0.9% on wages above $200,000 (or $250,000 for married couples filing jointly). Your employer doesn’t match that extra 0.9%; it’s an employee-only surtax.
- Idaho state income tax: A flat 5.3% on Idaho taxable income, which starts from your federal taxable income (after the federal standard deduction) with a handful of state-specific adjustments. There’s no separate Idaho standard deduction to calculate, since the state conforms to the federal figure.
- What’s absent: No county or city income tax anywhere in Idaho, no state disability insurance (SDI), and no paid family and medical leave payroll tax. Compare that to Oregon, which layers a statewide transit tax on top of income tax, or Washington, which has no income tax but a payroll-funded long-term care program.
- Optional pre-tax deductions: 401(k) or 403(b) contributions, traditional IRA payroll deductions where offered, health and dental insurance premiums, and HSA or FSA contributions all reduce the income that both federal and Idaho tax touch, since Idaho’s taxable income starts from the same federal base.
Idaho’s Five-Year Sprint to a Flat 5.3% Rate
Idaho didn’t always look like this. As recently as 2021 the state ran a six-bracket progressive system topping out at 6.925%, a structure not far off from what states like Montana or South Carolina still run today. Lawmakers then moved fast. House Bill 436 in 2022 collapsed the bracket system into one flat rate of 5.8%. A special legislative session in 2023 produced House Bill 1, cutting that rate again to 5.695% starting with the 2024 tax year. Then House Bill 40, signed in March 2025 and made retroactive to January 1 of that year, cut it once more to 5.3%, a reduction officials called the largest single income tax cut in state history. The 2026 tax year carries that 5.3% rate forward unchanged.
| Tax Year | Top / Flat Rate | Structure | Legislation |
|---|---|---|---|
| 2021 | 6.925% | Six progressive brackets | Prior law |
| 2022 | 5.8% | Flat rate (brackets collapsed) | House Bill 436 |
| 2023 | 5.8% | Flat rate | No change mid-year |
| 2024 | 5.695% | Flat rate | House Bill 1 (2023 special session) |
| 2025 | 5.3% | Flat rate, retroactive to Jan 1 | House Bill 40 |
| 2026 | 5.3% | Flat rate, unchanged | Carried forward from HB 40 |
At $70,000 of Idaho taxable income, that path from 2021 to 2026 works out to real money: taxable income at the old 6.925% top rate would have owed noticeably more than the same income does today at 5.3%. The exact dollar difference depends on how the old bracket structure applied to a given income level, but the direction is unmistakable, Idaho has cut this tax five times faster than most states manage in a decade.
Idaho vs. Neighboring States at $70,000 (Single Filer)
Idaho sits in the middle of a very mixed regional picture. Some neighbors charge nothing at all, others run progressive systems that can cost more or less depending on the exact income level. Here’s how a $70,000 single filer’s state tax bill and estimated net pay compare, using each state’s standard deduction and 2026 rate structure, before federal tax and FICA.
| State | State Tax Structure | Est. State Tax Owed | Est. Net Pay (after fed, state, FICA) |
|---|---|---|---|
| Idaho | Flat 5.3% | $2,857 | $55,218 |
| Nevada | No income tax | $0 | $58,075 |
| Utah | Flat 4.5% | ~$2,426 | ~$55,649 |
| Montana | Two brackets, 4.7% / 5.65% | ~$3,440 | ~$54,635 |
| Oregon | Four brackets, up to 9.9% | ~$3,896 | ~$54,179 |
Estimates use each state’s standard deduction and published 2026 rate schedule. Utah’s figure is simplified and doesn’t reflect its separate nonrefundable taxpayer credit, which can lower the actual bill slightly for some filers. Montana and Oregon numbers apply each state’s own standard deduction structure. Federal tax ($6,570) and FICA ($5,355) are held constant across the row for a clean state-level comparison.
Idaho’s Tax Trade-Offs, Honestly
No state wins on every category, and Idaho is no exception. Here’s a balanced look at where the state’s overall tax burden lands relative to national figures.
| Tax Type | Idaho | National Comparison | Verdict |
|---|---|---|---|
| Income tax | Flat 5.3% | Ranges from 0% to over 13% across the 41 states that tax wages | Middle of the pack, simple to calculate |
| Sales tax | 6% state, ~6.03% combined with local | Population-weighted national average is about 7.53% | Below average |
| Property tax | Roughly 0.5% effective rate | National average is roughly 0.9% | Well below average, among the lowest in the country |
| Estate / inheritance tax | None | A minority of states still levy one | No disadvantage |
The one place Idaho doesn’t come out ahead is groceries. The state charges its full 6% sales tax rate on food, with no blanket exemption, then partially offsets that through a $120-per-person Grocery Tax Credit claimed on the income tax return. For a family of four, that’s $480 back per year, which helps but doesn’t fully erase what you pay at the register throughout the year. Idaho’s overall tax system was ranked 9th out of 50 states on the Tax Foundation’s 2026 State Tax Competitiveness Index, a reasonably strong showing driven mostly by the flat income tax and low property taxes.
Remote Workers and the Treasure Valley Boom
Idaho has been one of the fastest-growing states in the country for over a decade, and the Boise metro area, sometimes called the Treasure Valley, has been ground zero for it. Micron Technology’s chip fabrication expansion in Boise, backed by federal CHIPS Act funding, has pulled in engineers and suppliers from across the country, and the area’s tech and healthcare sectors have grown alongside it. A lot of that growth has come from remote and hybrid workers who moved to Idaho while keeping a job based somewhere else.
If that’s your situation, a few things matter for your paycheck. Idaho taxes residents on all their income, regardless of which state your employer is based in, so a remote worker living in Boise but paid by a California or New York company still owes Idaho’s flat 5.3% on that income, not the tax rate of the employer’s state. Most employers will adjust withholding once you update your address and W-4 with Idaho as your work state, but it’s worth checking your first few pay stubs after a move to confirm the switch happened. If your employer keeps withholding for your old state by mistake, you may need to file a nonresident return there to claim it back, in addition to your Idaho resident return.
2026 Federal Tax Brackets, Worked Through an Example
Federal tax brackets are marginal, meaning a higher rate only applies to the slice of income inside that bracket, not your whole paycheck. Here’s the 2026 single-filer schedule from the IRS, followed by a full worked example.
| Rate | Taxable Income (Single) |
|---|---|
| 10% | $0 to $12,400 |
| 12% | $12,400 to $50,400 |
| 22% | $50,400 to $105,700 |
| 24% | $105,700 to $201,775 |
| 32% | $201,775 to $256,225 |
| 35% | $256,225 to $640,600 |
| 37% | Above $640,600 |
Example: A single filer in Boise earns $70,000 in 2026. Subtract the $16,100 standard deduction and taxable income is $53,900. That income moves through three brackets:
- The first $12,400 is taxed at 10% = $1,240
- The next $38,000, from $12,400 to $50,400, is taxed at 12% = $4,560
- The remaining $3,500, from $50,400 to $53,900, is taxed at 22% = $770
Total federal tax: $1,240 + $4,560 + $770 = $6,570. That’s a 22% marginal rate but only about a 9.4% effective rate on the full $70,000, which is the gap between the rate on your last dollar and the rate on your paycheck as a whole.
Idaho Paycheck FAQ
Does Idaho have a state income tax?
Yes. Idaho charges a flat 5.3% state income tax on taxable income for 2026. There are no brackets and no lower rate for smaller paychecks; every dollar of Idaho taxable income is taxed at the same 5.3% rate, whether you earn $30,000 or $300,000.
What is Idaho’s income tax rate for 2026?
Idaho’s flat income tax rate for 2026 is 5.3%. This rate was set by House Bill 40, signed by Governor Brad Little in March 2025 and applied retroactively to January 1, 2025, cutting the rate from 5.695%. It was described as the largest income tax cut in Idaho’s history, and it carried forward unchanged into 2026.
Does Idaho tax Social Security benefits?
No. Idaho does not tax Social Security retirement benefits at the state level, regardless of your total income. Other retirement income, such as pension payments and 401(k) or IRA withdrawals, is taxed at the flat 5.3% rate.
Are there local or city income taxes in Idaho?
No. Idaho has no county or city income taxes, no state disability insurance tax, and no paid family leave payroll tax. The only income tax line on an Idaho paycheck is the flat 5.3% state rate plus federal withholding.
How much tax comes out of a $70,000 salary in Idaho?
A single filer earning $70,000 in Idaho in 2026 pays roughly $6,570 in federal income tax, $2,857 in Idaho state tax, $4,340 in Social Security tax, and $1,015 in Medicare tax, for total withholding of about $14,782. That leaves an estimated take-home pay of about $55,218 per year, before any 401(k), health insurance, or other pre-tax deductions.
Does Idaho tax groceries?
Yes. Idaho charges the full 6% state sales tax on groceries, one of the few states that doesn’t exempt or reduce the rate on food. To offset this, Idaho gives residents a refundable Grocery Tax Credit worth $120 per person per year, claimed on the state income tax return.
Idaho’s paycheck math is unusually easy to hold in your head once you know two numbers: your federal bracket and the flat 5.3%. That simplicity is a genuine planning advantage, whether you’re negotiating a raise, comparing a job offer against a move to Nevada or Utah, or just trying to figure out what actually lands in your bank account twice a month. The state’s low property taxes and lack of local income tax add up quietly over a full year, even if the grocery bill stings a little more than it does across the border in Oregon.
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