The California surplus lines tax is 3% of gross premium, plus a 0.18% 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 | 3% |
| Stamping Fee | 0.18% |
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 California means navigating California's specific submission channel, fee structure, and deadline rules. SLTax360 abstracts that away: we maintain the California rate configuration in a versioned table and apply it automatically to every invoice you submit.
Each California transaction we file is itemized into its components — surplus lines tax (3%), stamping fee (0.18%) — so your audit trail 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 California transactions per month or a wholesaler running hundreds, the workflow is the same: upload, we file, you stay compliant. Want to verify the numbers yourself first? Run a free California calculation — no signup required.
A 20-minute demo will show you how SLTax360 handles your California volume end-to-end.