What creators in Idaho actually owe.
Every number on this page is computed by Post’s tax engine — the same one that runs the dashboard — from Idaho’s 2026 rules, not copied from a blog post. Verified against Idaho Code §63-3024; HB 40 (2025 session, retroactive to Jan 1 2025).
Idaho piggybacks on your federal return more than almost any state: the starting point is federal taxable income — not AGI — so the federal standard deduction and even the QBI deduction flow through and shrink the Idaho base before the state's single flat rate ever applies. Most states pointedly ignore QBI; Idaho honors it, which is worth real money to a Schedule C creator.
The consequence is that everything you do to lower your federal taxable income lowers your Idaho tax automatically — retirement contributions, the deductible half of SE tax, health insurance, the QBI deduction itself. There's no separate state deduction worksheet because there's nothing separate to deduct; the state math is one multiplication on a number you've already computed.
The rate itself has been cut in recent sessions, retroactively at that, so old returns overstate it. Quarterly dates mirror the federal four, paid through Idaho's Taxpayer Access Point.
Pay Idaho estimates at Idaho Taxpayer Access Point (TAP). Federal payments go through IRS Direct Pay — Post pre-fills both.
A $8,000/mo creator in Idaho, single filer
Effective rate: 24% of net profit. Your expenses, filing status, and income change this — run your own numbers below.
Generally yes, if you expect to owe $1,000+ in federal tax for the year — platform and brand-deal income has no withholding, so the IRS expects four payments a year, and Idaho runs its own estimated-payment schedule on top. Post computes both and reminds you before each date.
It depends on income and filing status — flat percentages lie. As one honest reference point: a single filer earning $96,000 a year with $19,200 of business expenses owes about $18,253 all-in (federal + self-employment + Idaho) — an effective 24% of net profit. Post recalculates your number as money lands.
Gifted product you keep is generally taxable income at fair market value on your federal return — and state taxable income starts from the federal numbers. Post logs PR at FMV in seconds so April doesn't surprise you.
Yes — unusually. Idaho starts from federal taxable income, which is measured after the QBI deduction, so QBI reduces both your federal and Idaho bills. Post's engine feeds your actual post-QBI federal taxable income into the Idaho calculation rather than approximating it, so the flow-through is exact.
It doesn't need one — the federal standard deduction is already subtracted inside federal taxable income, which is where Idaho's math begins. Applying a state deduction on top would double-count it. Post's engine models exactly that: one deduction, applied once, on the layer where it belongs.