diff --git a/.changeset/me-localization-endpoint.md b/.changeset/me-localization-endpoint.md
new file mode 100644
index 0000000000..2a4784f36c
--- /dev/null
+++ b/.changeset/me-localization-endpoint.md
@@ -0,0 +1,12 @@
+---
+"@objectstack/plugin-hono-server": minor
+---
+
+Expose resolved regional defaults to every authenticated user.
+
+Adds `GET /api/v1/auth/me/localization` returning the request tenant's resolved
+`{ currency, locale, timezone }` from the ExecutionContext (ADR-0053). The
+`localization` SETTINGS are gated to `setup.access`, but the resolved defaults
+are needed by every renderer to format currency/dates/numbers — so they are
+surfaced here without that gate. Enables a client to format a currency field
+in the tenant's default currency when the field omits its own.
diff --git a/packages/plugins/plugin-hono-server/src/hono-plugin.ts b/packages/plugins/plugin-hono-server/src/hono-plugin.ts
index ef57472d9a..4d13aebb54 100644
--- a/packages/plugins/plugin-hono-server/src/hono-plugin.ts
+++ b/packages/plugins/plugin-hono-server/src/hono-plugin.ts
@@ -718,6 +718,25 @@ export class HonoServerPlugin implements Plugin {
             }
         });
 
+        // GET /me/localization — the resolved regional defaults (currency /
+        // locale / timezone) for the current request's tenant, exposed to EVERY
+        // authenticated user. The `localization` SETTINGS are gated to
+        // `setup.access`, but the resolved defaults are needed by every renderer
+        // to format currency/dates/numbers — so they ride on the request
+        // ExecutionContext (ADR-0053) and are surfaced here without that gate.
+        rawApp.get(`${prefix}/auth/me/localization`, async (c: any) => {
+            const execCtx = await resolveCtx(c);
+            if (!execCtx?.userId) {
+                return c.json({ authenticated: false });
+            }
+            return c.json({
+                authenticated: true,
+                currency: execCtx.currency ?? null,
+                locale: execCtx.locale ?? null,
+                timezone: execCtx.timezone ?? null,
+            });
+        });
+
         // GET /me/apps — list apps the current user is allowed to enter.
         // Filters `metadata.list('app')` by:
         //   1. AppSchema.requiredPermissions ⊆ ctx.systemPermissions