Find Local Idaho Tax Relief Experts

Idaho's individual income tax uses a flat 5.8% rate as of 2023, simplified from its prior graduated structure by recent legislative changes. The state sales tax is 6%, and Idaho exempts groceries (excluding prepared food) from sales tax, which reduces the burden on consumers but requires retailers to carefully distinguish taxable from exempt sales. Local option taxes of up to 3% apply in resort cities like Sun Valley and Ketchum, so businesses in those areas must collect and remit at higher combined rates. Corporate income tax in Idaho is also 5.8%; businesses with multi-state operations must use Idaho's apportionment formula based on sales, property, and payroll factors. Payroll taxes require Idaho employers to withhold state income tax and file quarterly Form 910; failure to remit withheld amounts triggers trust fund penalties assessed personally against responsible parties. Back tax debt in Idaho accumulates at 5% penalty plus 3% annual interest on the unpaid balance after 30 days; the State Tax Commission can place liens, garnish wages, and levy bank accounts. Agricultural businesses, construction contractors, and ski resort industry workers are among the most common groups with Idaho back tax issues. The Idaho State Tax Commission offers installment payment plans and considers offers in compromise for taxpayers who can demonstrate an inability to pay the full balance.