diff --git a/apps/api/src/jobs/__tests__/import-processor.test.ts b/apps/api/src/jobs/__tests__/import-processor.test.ts
index e52b140..2e9998f 100644
--- a/apps/api/src/jobs/__tests__/import-processor.test.ts
+++ b/apps/api/src/jobs/__tests__/import-processor.test.ts
@@ -283,11 +283,11 @@ describe('Contact Import - Subscription Status Preservation', () => {
 
 describe('coerceCustomValue', () => {
   describe('boolean coercion', () => {
-    it.each(['true', 'TRUE', 'True', ' true ', '1', 'yes', 'YES', 'Yes'])('coerces %j to true', value => {
+    it.each(['true', 'TRUE', 'True', ' true ', 'yes', 'YES', 'Yes'])('coerces %j to true', value => {
       expect(coerceCustomValue(value)).toBe(true);
     });
 
-    it.each(['false', 'FALSE', 'False', ' false ', '0', 'no', 'NO', 'No'])('coerces %j to false', value => {
+    it.each(['false', 'FALSE', 'False', ' false ', 'no', 'NO', 'No'])('coerces %j to false', value => {
       expect(coerceCustomValue(value)).toBe(false);
     });
   });
@@ -300,6 +300,8 @@ describe('coerceCustomValue', () => {
       [' 42 ', 42],
       ['0.5', 0.5],
       ['-0.25', -0.25],
+      ['0', 0],
+      ['1', 1],
     ])('coerces %j to %j', (value, expected) => {
       expect(coerceCustomValue(value)).toBe(expected);
     });
@@ -311,14 +313,6 @@ describe('coerceCustomValue', () => {
       },
     );
 
-    it('keeps boolean precedence: "1" stays boolean true, not number 1', () => {
-      expect(coerceCustomValue('1')).toBe(true);
-    });
-
-    it('keeps boolean precedence: "0" stays boolean false, not number 0', () => {
-      expect(coerceCustomValue('0')).toBe(false);
-    });
-
     it('"1.0" is a number (does not match the boolean truthy set)', () => {
       expect(coerceCustomValue('1.0')).toBe(1);
     });
diff --git a/apps/api/src/jobs/import-processor.ts b/apps/api/src/jobs/import-processor.ts
index d66f540..94ff3f9 100644
--- a/apps/api/src/jobs/import-processor.ts
+++ b/apps/api/src/jobs/import-processor.ts
@@ -221,8 +221,12 @@ function isValidEmail(email: string): boolean {
   return emailRegex.test(email);
 }
 
-const BOOLEAN_TRUE = new Set(['true', '1', 'yes']);
-const BOOLEAN_FALSE = new Set(['false', '0', 'no']);
+// `0` and `1` are intentionally absent: in custom columns they are far more
+// often counts/ids/quantities than boolean flags, so they fall through to
+// numeric coercion below. The reserved `subscribed` column has its own
+// parser above that still accepts `1`/`0` as booleans.
+const BOOLEAN_TRUE = new Set(['true', 'yes']);
+const BOOLEAN_FALSE = new Set(['false', 'no']);
 // Strict integer-or-decimal pattern. Rejects leading zeros (preserves IDs,
 // zips, phone numbers), scientific notation, `+` prefix, and `.5` / `42.`.
 const NUMERIC_RE = /^-?(0|[1-9]\d*)(\.\d+)?$/;
@@ -230,9 +234,8 @@ const NUMERIC_RE = /^-?(0|[1-9]\d*)(\.\d+)?$/;
 /**
  * Coerce a raw CSV cell to its natural JSON primitive so post-import type
  * inference (ContactService.getAvailableFields) can detect booleans and
- * numbers on custom fields the same way it already does for the reserved
- * `subscribed` column. Values that match neither recogniser are returned
- * unchanged.
+ * numbers on custom fields. Values that match neither recogniser are
+ * returned unchanged.
  */
 export function coerceCustomValue(value: string): string | boolean | number {
   const trimmed = value.trim();