diff --git a/conservancy_beancount/reconcile/statement_reconciler.py b/conservancy_beancount/reconcile/statement_reconciler.py
index 057e3452af38e40e8bfbc37c206ff9286b0a1375..034d33a5bfeec74b0873b3f7886ce382270184ca 100644
--- a/conservancy_beancount/reconcile/statement_reconciler.py
+++ b/conservancy_beancount/reconcile/statement_reconciler.py
@@ -625,6 +625,24 @@ def process_unmatched(statement_trans: List[dict], books_trans: List[dict]) -> L
     return matches
 
 
+def format_output(matches, begin_date, end_date, csv_statement, show_reconciled_matches) -> str:
+    with io.StringIO() as out:
+        match_output = format_matches(matches, csv_statement, show_reconciled_matches)
+        _, total_missing_from_books, total_missing_from_statement = totals(matches)
+        print('-' * 155, file=out)
+        statement_heading = f'Statement transactions {begin_date} to {end_date}'
+        print(f'{statement_heading:<52}            {"Books transactions":<58}   Notes', file=out)
+        print('-' * 155, file=out)
+        for _, output in sorted(match_output, key=lambda x: x[0]):
+            print(output, file=out)
+        print('-' * 155, file=out)
+        print(f'Sub-total not on statement: {total_missing_from_statement:12,.2f}', file=out)
+        print(f'Sub-total not in books:     {total_missing_from_books:12,.2f}', file=out)
+        print(f'Total:                      {total_missing_from_statement + total_missing_from_books:12,.2f}', file=out)
+        print('-' * 155, file=out)
+        return out.getvalue()
+
+
 def main(arglist: Optional[Sequence[str]] = None,
          stdout: TextIO = sys.stdout,
          stderr: TextIO = sys.stderr,
@@ -689,19 +707,7 @@ def main(arglist: Optional[Sequence[str]] = None,
     matches.extend(unmatched)
 
     # Print out results of our matching.
-    match_output = format_matches(matches, args.csv_statement, args.show_reconciled_matches)
-    _, total_missing_from_books, total_missing_from_statement = totals(matches)
-    print('-' * 155)
-    statement_heading = f'Statement transactions {begin_date} to {end_date}'
-    print(f'{statement_heading:<52}            {"Books transactions":<58}   Notes')
-    print('-' * 155)
-    for _, output in sorted(match_output, key=lambda x: x[0]):
-        print(output)
-    print('-' * 155)
-    print(f'Sub-total not on statement: {total_missing_from_statement:12,.2f}')
-    print(f'Sub-total not in books:     {total_missing_from_books:12,.2f}')
-    print(f'Total:                      {total_missing_from_statement + total_missing_from_books:12,.2f}')
-    print('-' * 155)
+    print(format_output(matches, begin_date, end_date, args.csv_statement, args.show_reconciled_matches))
 
     # Write statement metadata back to the books.
     metadata_to_apply = []
diff --git a/tests/test_reconcile.py b/tests/test_reconcile.py
index 9d58eb77b0cc60b95ca147939bdfcfc192d0c661..292de3648d6476d04415aba9ffc7300da6fe9dc9 100644
--- a/tests/test_reconcile.py
+++ b/tests/test_reconcile.py
@@ -7,6 +7,7 @@ import textwrap
 
 from conservancy_beancount.reconcile.statement_reconciler import (
     date_proximity,
+    format_output,
     match_statement_and_books,
     metadata_for_match,
     payee_match,
@@ -379,3 +380,11 @@ def test_handles_fr_csv():
         },
     ]
     assert read_fr_csv(io.StringIO(CSV)) == expected
+
+
+def test_format_output():
+    statement = [S1]
+    books = [B1]
+    matches, _, _ = match_statement_and_books(statement, books)
+    output = format_output(matches, datetime.date(2022, 1, 1), datetime.date(2022, 2, 1), 'test.csv', True)
+    assert '2022-01-01:       10.00 Patreon         / Patreon   / 12345  →  2022-01-01:       10.00 Patreon                              ✓ Matched' in output