diff --git a/lnbits/core/views/api.py b/lnbits/core/views/api.py
index 123776d7..5d31423c 100644
--- a/lnbits/core/views/api.py
+++ b/lnbits/core/views/api.py
@@ -100,6 +100,16 @@ async def api_list_currencies_available() -> list[str]:
     return allowed_currencies()
 
 
+@api_router.get("/api/v1/default-currency")
+async def api_get_default_currency() -> dict[str, str | None]:
+    """
+    Get the default accounting currency for this LNbits instance.
+    Returns the configured default, or None if not set.
+    """
+    default_currency = settings.lnbits_default_accounting_currency
+    return {"default_currency": default_currency}
+
+
 @api_router.post("/api/v1/conversion")
 async def api_fiat_as_sats(data: ConversionData):
     output = {}