The Idaho surplus lines tax is 1.5% of gross premium, plus a 0.5% stamping fee. SLTax360 builds the file the state asks for and keeps the confirmation once it is submitted.
Rates effective from 2026-07-24
| Surplus Lines Tax | 1.5% |
| Stamping Fee | 0.5% |
| Filing Fee (flat) | $3.00 |
Estimate only. Figures are calculated from published state rates and are not a guarantee of the amounts due. Verify with the applicable state or stamping office before filing.
Idaho sets its own filing channel, fees and deadlines. We keep the Idaho rates and rules current and apply them to every invoice, so nobody on your team has to check a bulletin by hand.
Each Idaho transaction we file is itemized into its components: surplus lines tax (1.5%), stamping fee (0.5%). Your audit trail shows exactly which line went where. Confirmations are kept, deadlines are tracked, and filings are reconciled against your invoice data.
Whether you're an MGA filing a handful of Idaho transactions per month or a wholesaler running hundreds, the amounts, the deadline and the paperwork are handled in one place. Want to verify the numbers yourself first? Run a free Idaho calculation (no signup required).
In a 15-minute call we show you how your Idaho volume would run end to end, and what changes in the other states you write.