diff --git a/broker_sync/sinks/wealthfolio.py b/broker_sync/sinks/wealthfolio.py
index 426ec52..a7c2654 100644
--- a/broker_sync/sinks/wealthfolio.py
+++ b/broker_sync/sinks/wealthfolio.py
@@ -126,15 +126,22 @@ class WealthfolioSink:
         existing = await self.list_accounts()
         if any(a.get("id") == account.id for a in existing):
             return
+        # Wealthfolio 3.2's NewAccount is camelCase with required booleans.
+        # See apps/server/src/models.rs#NewAccount.
         resp = await self._request(
             "POST",
             _ACCOUNTS_PATH,
             json={
                 "id": account.id,
                 "name": account.name,
-                "account_type": str(account.account_type),
+                "accountType": str(account.account_type),
                 "currency": account.currency,
+                "isDefault": False,
+                "isActive": True,
+                "isArchived": False,
+                "trackingMode": "TRANSACTIONS",
                 "provider": account.provider,
+                "providerAccountId": account.id,
             },
         )
         resp.raise_for_status()
diff --git a/tests/sinks/test_wealthfolio.py b/tests/sinks/test_wealthfolio.py
index d8969f8..049f6aa 100644
--- a/tests/sinks/test_wealthfolio.py
+++ b/tests/sinks/test_wealthfolio.py
@@ -183,8 +183,10 @@ async def test_ensure_account_creates_if_missing(tmp_path: Path) -> None:
     await sink.ensure_account(acc)
     assert len(posted) == 1
     assert posted[0]["id"] == "t212-isa"
-    assert posted[0]["account_type"] == "ISA"
+    assert posted[0]["accountType"] == "ISA"
     assert posted[0]["currency"] == "GBP"
+    assert posted[0]["isActive"] is True
+    assert posted[0]["isDefault"] is False
 
 
 # -- Activity import --