The Idaho surplus lines tax is 1.5% of gross premium, plus a 0.5% stamping fee. SLTax360 automates every filing so MGAs, wholesalers, and retail brokers stay compliant without manual entry.
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.
Filing surplus lines tax in Idaho means navigating Idaho's specific submission channel, fee structure, and deadline rules. SLTax360 abstracts that away: we maintain the Idaho rate configuration in a versioned table and apply it automatically to every invoice you submit.
Each Idaho transaction we file is itemized into its components: surplus lines tax (1.5%), stamping fee (0.5%). Your audit trail then shows exactly which line went where. Confirmations are retained, 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).
A 20-minute demo will show you exactly how your Idaho volume runs end to end, and what changes in the other states you write.