diff --git a/tests/test_reports_accrual.py b/tests/test_reports_accrual.py
index c4392fc165cb5283570b40fb52adce2cc85d568d..2c5d3af9c5818816e1ade0cc3b1718d86b1609b2 100644
--- a/tests/test_reports_accrual.py
+++ b/tests/test_reports_accrual.py
@@ -309,6 +309,30 @@ def test_accrual_postings_inconsistent_account():
     related = accrual.AccrualPostings(data.Posting.from_txn(txn))
     assert related.account is related.INCONSISTENT
 
+def test_accrual_postings_rt_id():
+    txn = testutil.Transaction(postings=[
+        (ACCOUNTS[0], 10, {'rt-id': 'rt:90'}),
+        (ACCOUNTS[0], 10, {'rt-id': 'rt:90 rt:92'}),
+        (ACCOUNTS[0], 10, {'rt-id': 'rt:90 rt:94 rt:92'}),
+    ])
+    related = accrual.AccrualPostings(data.Posting.from_txn(txn))
+    assert related.rt_id == 'rt:90'
+
+def test_accrual_postings_rt_id_inconsistent():
+    txn = testutil.Transaction(postings=[
+        (ACCOUNTS[0], 10, {'rt-id': 'rt:96'}),
+        (ACCOUNTS[0], 10, {'rt-id': 'rt:98 rt:96'}),
+    ])
+    related = accrual.AccrualPostings(data.Posting.from_txn(txn))
+    assert related.rt_id is related.INCONSISTENT
+
+def test_accrual_postings_rt_id_none():
+    txn = testutil.Transaction(postings=[
+        (ACCOUNTS[0], 10),
+    ])
+    related = accrual.AccrualPostings(data.Posting.from_txn(txn))
+    assert related.rt_id is None
+
 @pytest.mark.parametrize('acct_name,invoice,day', testutil.combine_values(
     ACCOUNTS,
     ['FIXME', '', None, *testutil.NON_STRING_METADATA_VALUES],