diff --git a/.claude/settings.local.json b/.claude/settings.local.json
index 8ddeafe..328aa5f 100644
--- a/.claude/settings.local.json
+++ b/.claude/settings.local.json
@@ -33,7 +33,8 @@
       "mcp__plugin_supabase_supabase__list_projects",
       "Bash(grep -rni \"task_number\\\\|task #\\\\|task#\\\\|#\\\\${\\\\|taskNumber\\\\|seq\" src/pages/Tasks.jsx src/pages/TaskDetail.jsx src/pages/ProjectDetail.jsx)",
       "mcp__plugin_supabase_supabase__apply_migration",
-      "Bash(git commit -q -m 'fix: invoice picker skips review-shadow rows for service_type/pricing *)"
+      "Bash(git commit -q -m 'fix: invoice picker skips review-shadow rows for service_type/pricing *)",
+      "Bash(git commit -q -m 'fix: fourge_error revisions always bill $0 to client *)"
     ]
   }
 }
diff --git a/src/lib/invoiceVersionRules.js b/src/lib/invoiceVersionRules.js
index fbbc7a5..881f029 100644
--- a/src/lib/invoiceVersionRules.js
+++ b/src/lib/invoiceVersionRules.js
@@ -12,7 +12,9 @@ export function isInitialVersionEligible(task) {
   return isCompletedVersionEligible(task, 0);
 }
 
-export function getRevisionChargeQuantity(versionNumber) {
+export function getRevisionChargeQuantity(versionNumber, revisionType) {
+  // Fourge's own error revisions are never billed to the client.
+  if (revisionType === 'fourge_error') return 0;
   const version = Number(versionNumber || 0);
   return version >= 2 ? 1 : 0;
 }
diff --git a/src/pages/team/TeamCreateInvoice.jsx b/src/pages/team/TeamCreateInvoice.jsx
index 328b117..108f80e 100644
--- a/src/pages/team/TeamCreateInvoice.jsx
+++ b/src/pages/team/TeamCreateInvoice.jsx
@@ -146,7 +146,7 @@ export default function CreateInvoice() {
     const serviceLabel = getRevisionServiceType(revision);
     const description = buildRevisionItemDescription(revision);
     const price = priceList.find(p => p.service_type === serviceLabel && p.price_type === 'revision');
-    const revisionChargeQty = getRevisionChargeQuantity(revision?.version_number);
+    const revisionChargeQty = getRevisionChargeQuantity(revision?.version_number, revision?.revision_type);
     const quantity = revisionChargeQty > 0 ? revisionChargeQty : 1;
     const unitPrice = revisionChargeQty > 0 ? (price?.price || '') : 0;
     setItems(prev => {
@@ -436,7 +436,7 @@ export default function CreateInvoice() {
               {uninvoicedRevisions.map(rev => {
                 const revServiceType = getRevisionServiceType(rev);
                 const price = priceList.find(p => p.service_type === revServiceType && p.price_type === 'revision');
-                const revisionChargeQty = getRevisionChargeQuantity(rev?.version_number);
+                const revisionChargeQty = getRevisionChargeQuantity(rev?.version_number, rev?.revision_type);
                 const alreadyAdded = items.some(i => i.submission_id === rev.id);
                 return (
                   <div key={rev.id} style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between', padding: '8px 12px', background: 'var(--bg)', borderRadius: 4, border: '1px solid var(--border)' }}>
diff --git a/src/pages/team/TeamInvoices.jsx b/src/pages/team/TeamInvoices.jsx
index 3ca7b23..ae44206 100644
--- a/src/pages/team/TeamInvoices.jsx
+++ b/src/pages/team/TeamInvoices.jsx
@@ -376,7 +376,7 @@ export default function Invoices() {
   const invAddRevision = (rev) => {
     const svcType = pickInitialServiceType(rev.task?.submissions, rev.service_type || rev.task?.title || 'Revision');
     const price = invPriceList.find(p => p.service_type === svcType && p.price_type === 'revision');
-    const revisionChargeQty = getRevisionChargeQuantity(rev?.version_number);
+    const revisionChargeQty = getRevisionChargeQuantity(rev?.version_number, rev?.revision_type);
     const qty = revisionChargeQty > 0 ? revisionChargeQty : 1;
     const unitPrice = revisionChargeQty > 0 ? (price?.price || '') : 0;
     const desc = invBuildRevisionItemDescription(rev);
@@ -2017,7 +2017,7 @@ export default function Invoices() {
                       </div>
                       {invUnbilledRevisions.map(r => {
                         const added = invItems.some(i => i.submission_id === r.id);
-                        const revisionQty = getRevisionChargeQuantity(r?.version_number);
+                        const revisionQty = getRevisionChargeQuantity(r?.version_number, r?.revision_type);
                         const revisionServiceType = pickInitialServiceType(r.task?.submissions, r.service_type || r.task?.title || 'Revision');
                         const revisionPrice = invPriceList.find(p => p.service_type === revisionServiceType && p.price_type === 'revision');
                         const revisionLabel = revisionQty > 0 ? (revisionPrice ? `$${Number(revisionPrice.price).toFixed(2)}` : 'No price') : 'Free';