diff --git a/src/components/invoices/generate-invoice-dialog.tsx b/src/components/invoices/generate-invoice-dialog.tsx
index 118d7ec..02d48ef 100644
--- a/src/components/invoices/generate-invoice-dialog.tsx
+++ b/src/components/invoices/generate-invoice-dialog.tsx
@@ -235,8 +235,27 @@ export function GenerateInvoiceDialog({ open, onOpenChange, clientId, clientName
           ) : (
             <>
               <div>
-                <Label className="text-xs uppercase tracking-wider text-muted-foreground">Cases to bill</Label>
-                <div className="mt-2 border rounded-md divide-y max-h-[260px] overflow-auto">
+                <div className="flex items-center justify-between mb-2">
+                  <Label className="text-xs uppercase tracking-wider text-muted-foreground">Cases to bill</Label>
+                  <div className="flex items-center gap-2 text-xs">
+                    <button
+                      type="button"
+                      className="text-primary hover:underline"
+                      onClick={() => setSelected(Object.fromEntries(cases.map((c) => [c.id, true])))}
+                    >
+                      Select all
+                    </button>
+                    <span className="text-muted-foreground">·</span>
+                    <button
+                      type="button"
+                      className="text-primary hover:underline"
+                      onClick={() => setSelected({})}
+                    >
+                      Clear
+                    </button>
+                  </div>
+                </div>
+                <div className="border rounded-md divide-y max-h-[260px] overflow-auto">
                   {cases.map((c) => (
                     <label key={c.id} className="flex items-start gap-3 p-3 cursor-pointer hover:bg-muted/40">
                       <Checkbox
@@ -258,6 +277,22 @@ export function GenerateInvoiceDialog({ open, onOpenChange, clientId, clientName
                 </div>
               </div>
 
+              {selectedIds.length > 1 && (
+                <label className="flex items-start gap-3 p-3 rounded-md border cursor-pointer hover:bg-muted/40">
+                  <Checkbox
+                    checked={splitPerCase}
+                    onCheckedChange={(v) => setSplitPerCase(!!v)}
+                    className="mt-0.5"
+                  />
+                  <div className="flex-1">
+                    <div className="text-sm font-medium">Generate one invoice per selected case</div>
+                    <div className="text-xs text-muted-foreground">
+                      Creates {selectedIds.length} separate draft invoices instead of one combined invoice.
+                    </div>
+                  </div>
+                </label>
+              )}
+
               <div className="grid grid-cols-3 gap-3">
                 <div>
                   <Label>Tax rate (%)</Label>
@@ -269,7 +304,9 @@ export function GenerateInvoiceDialog({ open, onOpenChange, clientId, clientName
                 </div>
                 <div className="col-span-1 flex items-end justify-end">
                   <div className="text-right">
-                    <div className="text-[10px] uppercase tracking-wider text-muted-foreground">Estimated total</div>
+                    <div className="text-[10px] uppercase tracking-wider text-muted-foreground">
+                      {splitPerCase && selectedIds.length > 1 ? "Combined total" : "Estimated total"}
+                    </div>
                     <div className="font-serif text-xl">{formatCurrency(total)}</div>
                     {tax > 0 && <div className="text-[11px] text-muted-foreground">{formatCurrency(subtotal)} + {formatCurrency(tax)} tax</div>}
                   </div>