diff --git a/conservancy_beancount/plugin/meta_tax_implication.py b/conservancy_beancount/plugin/meta_tax_implication.py
index af2cb41..a0e7b28 100644
--- a/conservancy_beancount/plugin/meta_tax_implication.py
+++ b/conservancy_beancount/plugin/meta_tax_implication.py
@@ -31,7 +31,7 @@ def _make_aliases(s: str, stdname: Optional[str]=None) -> Iterator[Tuple[str, st
     elif s.startswith('USA-'):
         yield from _make_aliases(f'US-{s[4:]}', stdname)
     if s.endswith('-Corporation'):
-        yield from _make_aliases(f's[:-12]-Corp', stdname)
+        yield from _make_aliases(f'{s[:-12]}-Corp', stdname)
 
 class MetaTaxImplication(core._NormalizePostingMetadataHook):
     _STDNAMES = [
diff --git a/tests/test_meta_tax_implication.py b/tests/test_meta_tax_implication.py
index 98c0162..9c2aa31 100644
--- a/tests/test_meta_tax_implication.py
+++ b/tests/test_meta_tax_implication.py
@@ -20,6 +20,7 @@ VALID_VALUES = {
     'Bank-Transfer': 'Bank-Transfer',
     'Chargeback': 'Chargeback',
     'Foreign-Corporation': 'Foreign-Corporation',
+    'foreign-corp': 'Foreign-Corporation',
     'Foreign-Grantee': 'Foreign-Grantee',
     'Foreign-Individual-Contractor': 'Foreign-Individual-Contractor',
     'Loan': 'Loan',
@@ -29,6 +30,7 @@ VALID_VALUES = {
     'Tax-Payment': 'Tax-Payment',
     'USA-501c3': 'USA-501c3',
     'USA-Corporation': 'USA-Corporation',
+    'us-corp': 'USA-Corporation',
     'USA-Grantee': 'USA-Grantee',
     'US-Grantee': 'USA-Grantee',
     'W2': 'W2',