Idaho payroll setup for your first hire

Idaho takes state income tax from paychecks. Those amounts sit with the Tax Commission, not the unemployment office.

Idaho takes state income tax from paychecks. This is not Texas, Florida, Washington, Tennessee, or Nevada. Those states do not take state income tax from paychecks. A federal Employee’s Withholding Certificate (Form W-4) is not the Idaho certificate.

STC is the Idaho State Tax Commission, the income-tax office. Gusto’s help article uses those letters. The Withholding Basics page says you must have an Idaho withholding account if you have an employee earning income while in Idaho. That line covers agricultural work, household help, and family members. You may also open an account if you choose to withhold Idaho tax for an Idaho resident working outside Idaho. The same page prints a civil penalty of $100 per day if you have employees, or withhold Idaho tax, and do not register. That $100-a-day line is a Tax Commission penalty. It is not California’s $100-in-a-quarter unemployment test. Do not copy that California clock onto Idaho.

Get a federal Employer Identification Number, called EIN, from the IRS first. The apply page and the Getting Tax Permits guide then send you to the Idaho Business Registration, called IBR. Online shops use the Idaho Business Registration System. Paper shops use Form IBR-1. The Tax Commission says an online permit can take 10 to 15 business days. A mailed form can take up to four weeks. Use the same employer name and EIN you will print on Form W-2. After the account exists, the Tax Commission mails TAP setup instructions. TAP is Taxpayer Access Point, the Tax Commission e-services portal. This TAP is not Utah’s tap.utah.gov. It is not Mississippi’s Department of Revenue TAP. Register TAP only after the withholding account is active. Hold the Idaho withholding account number. The Tax Commission’s forms page prints that number as nine digits. A federal EIN is not that number. A Department of Labor unemployment number is not that number either. The withholding number is not transferable. A new owner, a new EIN, or a new business entity needs a new withholding account.

Employees complete federal Form W-4 and Form ID W-4, Idaho Employee’s Withholding Allowance Certificate. The forms page and the W-4 page say keep both forms. Do not send them to the Tax Commission. File later deposits as Form 910 on the cycle the Tax Commission assigns. File Form 967, Idaho Annual Withholding Report, every year even if Form 910 is quarterly. File a zero Form 910 when you withhold nothing in a period. Quarterly shops withhold $750 or less each quarter. Monthly shops withhold more than $750 a quarter and less than $25,000 a month. Semimonthly shops withhold at least $25,000 a month, or $300,000 in 12 months. Annual shops withhold less than $750 a year. Confirm the live cycle on TAP. Idaho does not use federal Form 941 as the state withholding return. Do not copy Utah’s Form TC-941E onto Idaho. Do not copy Iowa’s Form 44-095 onto Idaho.

When you owe unemployment: $1,500 in a quarter, or one person in 20 weeks. File IBR within six months.

DOL collects state unemployment tax. That tax is often called SUTA, state unemployment tax, or SUI, state unemployment insurance. Idaho Code § 72-1315 and the November 2025 handbook restate the regular-shop test. You become a covered employer if you pay $1,500 or more in a calendar quarter in the current or preceding calendar year, or if you employ at least one person for some portion of a day in each of 20 different calendar weeks, whether or not consecutive, in the current or preceding calendar year. This is Kansas’s, Mississippi’s, Wisconsin’s, and Illinois’s pair. This is not California’s $100-in-a-quarter test. There is no 15-day California clock on the handbook page. Do not copy that clock onto Idaho. This is not Nevada’s $225-quarter test. This is not Indiana’s $1 covered-wage test. This is not Oregon’s $1,000-quarter or 18-week test. This is not Utah’s one-person, some-portion-of-a-day clock. This is not Iowa’s any-wages test. This is not Arkansas’s ten-day test. Idaho does take state paycheck withholding. Do not treat Idaho like a no-withholding state.

The same statute names other paths. A successor who buys a shop that already pays unemployment tax is an employer. Domestic work in a private home uses $1,000 cash wages in a quarter. Agricultural labor uses $20,000 cash wages in a quarter, or ten people in 20 weeks. Nonprofit and government shops have their own lines. This scorecard is the regular-business path.

Idaho Code § 72-1337 says a covered employer must complete an Idaho business registration form within six months of becoming a covered employer. The handbook prints the same six-month clock and a penalty of up to $500 if you miss it. You may send the form before you hire. You still must send it within six months after you meet the $1,500-quarter or 20-week test. This six-month file is not Iowa’s 30-day myIowaUI clock after the first paycheck. It is not Kansas’s 15-day Form K-CNS 010 clock. It is not Louisiana’s 30-day apply-even-if-not-liable clock. Do not copy those clocks onto Idaho. Do not skip the six-month IBR after you become covered.

The Employer Portal FAQ speaks of an Idaho unemployment insurance account number. Software pages also call that number a SUTA number or an EAN, Employer Account Number. Hold the number. Do not substitute a federal EIN for that number. Do not substitute the withholding account number.

Register unemployment on the Idaho Business Registration. File later wage reports on the Employer Portal.

Those are two jobs. IBR opens the file. The Employer Portal is where you file later wage reports and pay the tax. The handbook names the quarterly file Form TX20 or Form TX26. Confirm the live name on the Employer Portal. Reports and payments are due the last day of the month after the quarter ends. There is no grace period. If that day is a weekend or holiday, the next workday is the due date. Once the account is active, file even when no wages were paid, until the Department of Labor closes the file. You do not have to file quarterly reports before you meet the coverage test. After you become covered in a calendar year, file the earlier quarters of that year with the quarter you became covered. A quarterly wage report is not the new-hire report.

The 2026 rate-class page prints the standard new-employer rate as 1.000%. That split is 0.970% unemployment tax and 0.030% workforce development. The administrative rate on that table is 0.000%. The 2026 taxable wage base is $58,300. Wages above that base must still be reported. They are not taxed. New shops except cost-reimbursement shops keep the standard rate for at least the first six calendar quarters. Later rates sit on the Notice of Taxable Wage Rate mailed in December. Use the rate on your notice, not a number from a software page. That printed 1.000% is not Kansas’s 1.75% new-shop rate. It is not Nevada’s 2.95% new-shop rate. It is not Alabama’s flat 2.70% new-account rate. It is the same printed 1.000% Iowa uses for a new non-construction shop. Iowa’s 2026 wage base is $20,400. Idaho’s 2026 wage base is $58,300. Do not copy Iowa’s wage base onto Idaho.

New hire is a 20-day Idaho Department of Labor report. A quarterly wage report does not take it.

The new-hire report is a list of who you just hired. It is not a box on the quarterly unemployment wage report. In Idaho that report goes to the same Department of Labor that collects unemployment tax. File on the Employer Portal. The new-hire page requires a report of a new employee within 20 days of the date of hire. Report a rehire if the last job with you ended at least 60 days before the first day back. The start date is the first day the person worked for wages. Do not report a future start date. Paper shops may mail or fax the New Hire Reporting Form. A W-4 with the hire date can carry the report. You also send the employer’s federal EIN and, unless the shop is exempt, the state unemployment account number.

Idaho Code § 72-1604 prints the same 20-calendar-day clock, or a twice-a-month electronic pair no fewer than 12 days and no more than 16 days apart. A quarterly Form TX20 wage report does not satisfy that clock. This is not Iowa’s 15-day Centralized Employee Registry report. This is not Alabama’s seven-day report. This is not Georgia’s 10-day report. This is not Massachusetts’s 14-day Department of Revenue report. Most peer states use a 20-day clock. Idaho’s 20-day clock sits with the Department of Labor, the same office that collects unemployment tax. That is Utah’s path. It is not Iowa’s path. Iowa sends the new-hire file to Human Services.

Workplace injury insurance is due before the first employee starts. The Industrial Commission does not sell the policy.

This is Kentucky’s, Connecticut’s, Louisiana’s, Oklahoma’s, Nevada’s, Utah’s, and Iowa’s first-employee path for a regular shop. It is not Texas optional coverage. It is not Mississippi’s, Alabama’s, or Tennessee’s five-employee wait. It is not Arkansas’s, Georgia’s, North Carolina’s, or Virginia’s three-employee wait. It is not Florida’s or South Carolina’s four-employee wait. It is not Wisconsin’s three-employee or $500-quarter path. It is not Kansas’s $20,000 payroll line. It is not Washington’s exclusive state fund. It is not Ohio’s Bureau of Workers’ Compensation monopoly. Idaho calls this workers’ compensation.

IIC is the Idaho Industrial Commission, the workplace-injury office. The employer FAQ and the Facts for Employers page say shops with one or more full-time, part-time, seasonal, or occasional employees must keep a policy unless the work is exempt. Coverage must be in place before the first employee is hired. Idaho Code § 72-301 says an employer secures benefits with a licensed insurer or with approved self-insurance. Idaho Code § 72-212 leaves household domestic work, some family work, casual work outside the shop’s trade, and some owner-officer work outside that regular-shop line. This scorecard is the regular-business path.

The Industrial Commission does not sell that policy. Ordinary first-hire shops buy a licensed private policy, buy from the State Insurance Fund, use the assigned-risk pool, or qualify to self-insure. The FAQ says the State Insurance Fund is a quasi-governmental entity, not a state agency. It is one of four ordinary doors. It is not Washington’s exclusive L&I fund. A payroll login is not a policy.

How Gusto and Patriot describe Idaho

Confirm the live withholding account number on TAP. Confirm the unemployment account number and rate on the Employer Portal and on the Notice of Taxable Wage Rate. Confirm workplace injury insurance with a licensed carrier or the State Insurance Fund. Confirm the 20-day new-hire file on the Employer Portal.

Gusto’s Idaho help article says Middesk (Gusto’s business-verification company) may register state income-tax withholding and state unemployment insurance (SUI). It names the Idaho State Tax Commission for withholding and the Idaho Department of Labor for unemployment tax. It sends shops to the Idaho Business Registration. That IBR path matches the Tax Commission apply page. It says the withholding account number is a Permit Number, usually nine digits, and that the number and deposit schedule can arrive in about 10 days if you register online. The Tax Commission’s IBR guide prints 10 to 15 business days for an online permit. Confirm the live letter. The same article says most companies become liable for Idaho unemployment tax after $1,500 in wages in a calendar quarter. That printed $1,500 line is what the software page says. It matches one half of Idaho Code § 72-1315. Confirm the 20-week path on the statute. It lists Form 910 and Form 967 among Idaho files. Those names match the Tax Commission withholding pages. It also tells shops to create a TAP login and to approve third-party access with a mailed, case-sensitive code. Middesk’s standard order does not open workplace injury insurance. Read Gusto’s Idaho article. See Gusto on the directory.

Patriot’s registration article tells new shops to open withholding and unemployment on the Idaho Business Registration System. That IBRS line matches the Department of Labor registration door. The official withholding pages also name Form IBR-1 and TAP for later files. The same article prints the 2026 standard unemployment rate as 1.000%, split as 0.97000% UI, 0.0000% administrative, and 0.0300% workforce. Those printed rates match the 2026 rate-class page. Use the rate on your live Notice of Taxable Wage Rate, not a number from a software page. The article tells employees to complete Form ID W-4. It puts the 20-day new-hire report on “Idaho’s New Hire Directory.” The official page names the Idaho Department of Labor and the Employer Portal. The article also says workplace injury insurance is due if you have at least one employee, through a private provider or a state-operated fund. The one-employee line matches the Industrial Commission FAQ. The state-fund line is closer to Idaho than it is to Utah. The ordinary Idaho path includes the State Insurance Fund as one licensed door. It is not a Washington-style exclusive state fund. Read Patriot’s registration article. See Patriot on the directory.

What still sits on the employer

• Decide that you have paid $1,500 in a quarter, or employed one person in 20 weeks, in the current or preceding calendar year. Domestic, agricultural, successor, nonprofit, and government paths use other tests.
• Complete the Idaho Business Registration within six months of becoming a covered employer. You may file it before you hire. Idaho Code § 72-1337 still starts that six-month clock when you become covered.
• Hold the Idaho withholding account number. Hold the Department of Labor unemployment account number. Do not substitute a federal EIN for either number.
• Enter the unemployment rate from the Notice of Taxable Wage Rate, not a marketing figure. The 2026 standard rate is 1.000% and the wage base is $58,300. Confirm the live notice.
• File the quarterly unemployment wage report on the Employer Portal after the account exists, even in a zero-wage quarter until the Department of Labor closes the file. Those reports are due the last day of the month after the quarter ends.
• Register withholding on IBR or Form IBR-1 before the first withheld paycheck. Collect Form W-4 and Form ID W-4. A federal W-4 is not the Idaho certificate. File Form 910 on the cycle the Tax Commission assigns. File Form 967 each year.
• File the 20-day new-hire report with the Idaho Department of Labor. A W-4 with the hire date can carry that report. A quarterly Form TX20 wage report does not satisfy that clock.
• Buy workplace injury insurance before the first employee starts in a regular shop. Household, casual, and some family or owner-officer work can sit outside that line under Idaho Code § 72-212. The Industrial Commission does not sell that policy. Payroll software does not issue that policy.
• Do not copy another state’s clock onto Idaho. Idaho does not use California’s $100-quarter test. Idaho’s $100-a-day withholding-registration penalty is not that California test. Idaho does not use Utah’s one-person, some-portion-of-a-day unemployment clock. Idaho does not use Iowa’s any-wages unemployment test. Idaho does not use Iowa’s 30-day myIowaUI clock. Idaho does not use Kansas’s 15-day Form K-CNS 010 clock. Idaho does not use Nevada’s $225-quarter test. Idaho does not use Indiana’s $1 unemployment test. Idaho does not use Oregon’s $1,000-quarter or 18-week test. Idaho does not use Arkansas’s ten-day unemployment test. Idaho does not skip state paycheck withholding the way Texas, Florida, Washington, Tennessee, or Nevada do. Idaho does not open withholding the way Utah does. Idaho’s TAP is not Utah’s TAP. Idaho’s TAP is not Mississippi’s TAP. Idaho does not use Iowa’s 15-day new-hire clock. Idaho does not use Alabama’s seven-day new-hire clock. Idaho does not use Georgia’s 10-day new-hire clock. Idaho does not send the new-hire file to Human Services the way Iowa does. Idaho does not use Mississippi’s, Alabama’s, or Tennessee’s five-employee workplace-injury wait. Idaho does not use Arkansas’s three-employee workplace-injury wait. Idaho does not use Florida’s or South Carolina’s four-employee wait. Idaho does not use Kansas’s $20,000 payroll workplace-injury line. Idaho does not use Texas optional coverage. Idaho does not use Washington’s exclusive state fund. Idaho does not use Ohio’s Bureau of Workers’ Compensation monopoly.

Also forming a company in Idaho? Process Score compares registered agents there.