diff --git a/docs/planning/ignis-protocol-specification.md b/docs/planning/ignis-protocol-specification.md
index 5b0ce4a..46438bc 100644
--- a/docs/planning/ignis-protocol-specification.md
+++ b/docs/planning/ignis-protocol-specification.md
@@ -141,6 +141,16 @@
 - Do we need geo-blocking for specific states?
 - What is the threshold between "mature discussion" and "adult content"?
 
+**6. State Tax Nexus & RV Operations (CRITICAL):**
+- Operating a subscription business from an RV traveling across state lines
+- What are our economic nexus obligations for sales tax collection?
+- How do we handle income tax compliance when business operations cross state borders?
+- Do we need to register with each state we operate from temporarily?
+- What documentation is required to track where work is performed vs where subscribers reside?
+- Should we integrate automated tax compliance (Stripe Tax/TaxJar) or manual tracking?
+- Are there simplified tax regimes for nomadic digital businesses?
+- RV travel timeline: September 2027 (need solution in place before then)
+
 ---
 
 ## Proposed Architecture (Pending Legal Guidance)