2026 tax year · Idaho
Quarterly tax calculator for Idaho
A $50,000 1099 year in Idaho means about $2,190 to the IRS and $554 to the state, four times a year.
Switching state opens that state's page.
Line 24 of your prior 1040, unlocks the prior-year safe harbor.
Above $150,000 the prior-year target rises to 110%.
Enter what you expect to earn and press Calculate to see each payment.
The Idaho payment schedule on $50,000
A single filer with $50,000 of net 1099 profit, taking the standard deduction and paying 90% of this year's liability:
| Due | Income earned | To the IRS | To Idaho |
|---|---|---|---|
| April 15, 2026 | Jan 1 - Mar 31 | $2,190 | $554 |
| June 16, 2026 | Apr 1 - May 31 | $2,190 | $554 |
| September 15, 2026 | Jun 1 - Aug 31 | $2,190 | $554 |
| January 15, 2027 | Sep 1 - Dec 31 | $2,190 | $554 |
| Year | $8,759 | $2,217 | |
The Idaho side of each payment
Idaho taxes the same 1099 profit at a flat 5.3%, so a second payment goes to the state each quarter, about $554 on the $50,000 example, against $2,463 of Idaho income tax for the year.
The 2026 dataset carries the federal 1040-ES dates but not state-specific due dates, so confirm Idaho's schedule and voucher with its tax agency, several states do not match the federal calendar exactly.
What each quarter costs at three income levels in Idaho
A single filer taking the standard deduction, at three levels of net profit. The federal column moves with the self-employment tax and the federal brackets; the Idaho column moves with Idaho's own rules, so the two do not scale together. Use the calculator above for the other filing statuses:
| Net 1099 profit | Per quarter to the IRS | Per quarter to Idaho | Effective rate |
|---|---|---|---|
| $25,000 | $923 | $277 | 21.3% |
| $50,000 | $2,190 | $554 | 24.4% |
| $100,000 | $5,032 | $1,108 | 27.3% |
Staying inside the safe harbor
Payments are required once you expect to owe $1,000 or more, which the $50,000 example above does, at $12,195 for the year. Two targets avoid a penalty and you need only the lower; the hub explains both routes and the penalty.
What the rate alone doesn't tell you about Idaho
Idaho is a community property state. In community property states, income earned during marriage is generally owned equally by both spouses. This affects QJV eligibility, MFS filing strategies, and retirement account contribution rules.
What a quarter costs in the states Idaho borders
On $50,000, Idaho charges $2,650 of state income tax. Of the 6 states it borders, Nevada is the lightest at nothing at all and Oregon the most expensive at $3,083, a spread of $3,083 on the same income.
| State | State tax per quarter | vs Idaho |
|---|---|---|
| Nevada | No income tax | −$596 a quarter |
| Washington | No income tax | −$596 a quarter |
| Wyoming | No income tax | −$596 a quarter |
| Montana | $404 | −$192 a quarter |
| Utah | $506 | −$90 a quarter |
| Oregon | $694 | +$97 a quarter |
- Nevada has no income tax at all, so the same work done there costs $2,650 less in state tax than it does in Idaho.
- Washington has no income tax at all, so the same work done there costs $2,650 less in state tax than it does in Idaho.
- Wyoming has no income tax at all, so the same work done there costs $2,650 less in state tax than it does in Idaho.
- Montana would take $854 less, $1,797 against Idaho's $2,650.
- Utah would take $400 less, $2,250 against Idaho's $2,650.
- Oregon would take $433 more, $3,083 against Idaho's $2,650.
What this schedule assumes
- Single filer, standard deduction, net 1099 profit after expenses, no W-2 withholding.
- Four equal payments rather than annualised income.
- Idaho due dates are not in the 2026 dataset, the dates shown are the federal ones.
Idaho quarterly tax questions
How much should I send each quarter in Idaho?
On $50,000 of net 1099 profit as a single filer, about $2,190 to the IRS plus roughly $554 to Idaho. That is 90% of this year's liability, split four ways.
Does Idaho use the same due dates as the IRS?
Idaho requires its own estimated payments, but the 2026 dataset carries only the federal 1040-ES dates (April 15, 2026, June 16, 2026, September 15, 2026, January 15, 2027). Confirm Idaho's own schedule with its tax agency before assuming they line up.