diff --git a/docs/allow-in-instance-of.md b/docs/allow-in-instance-of.md
index d905b28..9fe6fb2 100644
--- a/docs/allow-in-instance-of.md
+++ b/docs/allow-in-instance-of.md
@@ -40,6 +40,44 @@ parameters:
                 - 'MyInterface'
 ```
 
+### Combining with parameter conditions
+
+Both `allowInInstanceOf` and `disallowInInstanceOf` can be combined with `allowParamsInAllowed` and `allowExceptParamsInAllowed` to add parameter-based conditions within the class hierarchy scope. See [allow with parameters](allow-with-parameters.md) for details on parameter configuration.
+
+For example, to allow `dispatch()` in classes implementing `HandlerInterface` but only when the first argument is of type `SafeEvent`:
+
+```neon
+parameters:
+    disallowedFunctionCalls:
+        -
+            function: 'dispatch()'
+            allowInInstanceOf:
+                - 'App\Handlers\HandlerInterface'
+            allowParamsInAllowed:
+                -
+                    position: 1
+                    name: 'event'
+                    typeString: 'App\Events\SafeEvent'
+```
+
+To disallow `dispatch()` in `HandlerInterface` classes only when the first argument is of type `DangerousEvent`, and allow it with any other argument:
+
+```neon
+parameters:
+    disallowedFunctionCalls:
+        -
+            function: 'dispatch()'
+            disallowInInstanceOf:
+                - 'App\Handlers\HandlerInterface'
+            allowExceptParamsInAllowed:
+                -
+                    position: 1
+                    name: 'event'
+                    typeString: 'App\Events\DangerousEvent'
+```
+
+The `allowExceptParamsInAllowed` counterpart works with `allowInInstanceOf` too (allowed in hierarchy except when the parameter matches), and `allowParamsInAllowed` works with `disallowInInstanceOf` (disallowed in hierarchy unless the parameter matches).
+
 ### Allow in `use` imports
 The `allowInInstanceOf` configuration above will also report an error on the line with the import, if present:
 ```php
diff --git a/docs/allow-with-parameters.md b/docs/allow-with-parameters.md
index a4d7f6a..a866fed 100644
--- a/docs/allow-with-parameters.md
+++ b/docs/allow-with-parameters.md
@@ -33,7 +33,7 @@ parameters:
                     value: true
 ```
 
-When using `allowParamsInAllowed`, calls will be allowed only when they are in one of the `allowIn` paths, and are called with all parameters listed in `allowParamsInAllowed`.
+When using `allowParamsInAllowed`, calls will be allowed only when they are in one of the `allowIn` paths (or in a class hierarchy matched by `allowInInstanceOf`), and are called with all parameters listed in `allowParamsInAllowed`.
 With `allowParamsAnywhere`, calls are allowed when called with all parameters listed no matter in which file. In the example above, the `log()` method will be disallowed unless called as:
 - `log(..., true)` (or `log(..., alert: true)`) anywhere
 - `log('foo', true)` (or `log(message: 'foo', alert: true)`) in `another/file.php` or `optional/path/to/log.tests.php`
@@ -115,7 +115,7 @@ parameters:
 ```
 This configuration will disallow calls like `waldo('foo', 'bar')` or `waldo('*', '*')`, but `waldo('foo')` or `waldo()` will be still allowed.
 
-It's also possible to disallow functions and methods previously allowed by path (using `allowIn`) or by function/method name (`allowInMethods`) when they're called with specified parameters, and allow when called with any other parameter. This is done using the `allowExceptParamsInAllowed` config option.
+It's also possible to disallow functions and methods previously allowed by path (using `allowIn`), by function/method name (`allowInMethods`), or by class hierarchy (`allowInInstanceOf`) when they're called with specified parameters, and allow when called with any other parameter. This is done using the `allowExceptParamsInAllowed` config option.
 
 Take this example configuration:
 
diff --git a/src/Allowed/Allowed.php b/src/Allowed/Allowed.php
index cb25241..aff2691 100644
--- a/src/Allowed/Allowed.php
+++ b/src/Allowed/Allowed.php
@@ -98,10 +98,16 @@ public function isAllowed(?Node $node, Scope $scope, ?array $args, Disallowed $d
 			}
 		}
 		if ($disallowed->getAllowInInstanceOf()) {
-			return $this->isInstanceOf($scope, $disallowed->getAllowInInstanceOf());
+			if (!$this->isInstanceOf($scope, $disallowed->getAllowInInstanceOf())) {
+				return false;
+			}
+			return !$hasParams || $this->hasAllowedParamsInAllowed($scope, $args, $disallowed);
 		}
 		if ($disallowed->getAllowExceptInInstanceOf()) {
-			return !$this->isInstanceOf($scope, $disallowed->getAllowExceptInInstanceOf());
+			if (!$this->isInstanceOf($scope, $disallowed->getAllowExceptInInstanceOf())) {
+				return true;
+			}
+			return $hasParams && $this->hasAllowedParamsInAllowed($scope, $args, $disallowed, false);
 		}
 		if ($hasParams && $disallowed->getAllowExceptParams()) {
 			return $this->hasAllowedParams($scope, $args, $disallowed->getAllowExceptParams(), false);
@@ -223,9 +229,10 @@ private function hasAllowedParams(Scope $scope, ?array $args, array $allowConfig
 	 * @param Scope $scope
 	 * @param array<Arg>|null $args
 	 * @param DisallowedWithParams $disallowed
+	 * @param bool $defaultResult
 	 * @return bool
 	 */
-	private function hasAllowedParamsInAllowed(Scope $scope, ?array $args, DisallowedWithParams $disallowed): bool
+	private function hasAllowedParamsInAllowed(Scope $scope, ?array $args, DisallowedWithParams $disallowed, bool $defaultResult = true): bool
 	{
 		if ($disallowed->getAllowExceptParamsInAllowed()) {
 			return $this->hasAllowedParams($scope, $args, $disallowed->getAllowExceptParamsInAllowed(), false);
@@ -233,7 +240,7 @@ private function hasAllowedParamsInAllowed(Scope $scope, ?array $args, Disallowe
 		if ($disallowed->getAllowParamsInAllowed()) {
 			return $this->hasAllowedParams($scope, $args, $disallowed->getAllowParamsInAllowed(), true);
 		}
-		return true;
+		return $defaultResult;
 	}
 
 
diff --git a/tests/Calls/FunctionCallsTest.php b/tests/Calls/FunctionCallsTest.php
index 5ae303f..49b111e 100644
--- a/tests/Calls/FunctionCallsTest.php
+++ b/tests/Calls/FunctionCallsTest.php
@@ -225,6 +225,46 @@ protected function getRule(): Rule
 						Stringable::class,
 					],
 				],
+				// test allowInInstanceOf + allowExceptParamsInAllowed: allowed in hierarchy except when param is 'forbidden'
+				[
+					'function' => 'str_starts_with()',
+					'allowInInstanceOf' => [
+						'Waldo\Foo\BarBase',
+					],
+					'allowExceptParamsInAllowed' => [
+						2 => 'forbidden',
+					],
+				],
+				// test disallowInInstanceOf + allowExceptParamsInAllowed: disallowed in hierarchy only when param is 'forbidden'
+				[
+					'function' => 'str_ends_with()',
+					'disallowInInstanceOf' => [
+						'Waldo\Foo\BarBase',
+					],
+					'allowExceptParamsInAllowed' => [
+						2 => 'forbidden',
+					],
+				],
+				// test disallowInInstanceOf + allowParamsInAllowed: disallowed in hierarchy unless param is 'allowed_param'
+				[
+					'function' => 'str_contains()',
+					'disallowInInstanceOf' => [
+						'Waldo\Foo\BarBase',
+					],
+					'allowParamsInAllowed' => [
+						2 => 'allowed_param',
+					],
+				],
+				// test allowInInstanceOf + allowParamsInAllowed: allowed in hierarchy only when param is 'allowed_chars'
+				[
+					'function' => 'ltrim()',
+					'allowInInstanceOf' => [
+						'Waldo\Foo\BarBase',
+					],
+					'allowParamsInAllowed' => [
+						2 => 'allowed_chars',
+					],
+				],
 				// test allowed instances with wildcards, intentionally wrong case to test FNM_CASEFOLD
 				[
 					'function' => 'str_pad()',
@@ -467,6 +507,61 @@ public function testAllowInInstanceOfWildcard(): void
 	}
 
 
+	public function testInstanceOfWithParams(): void
+	{
+		$this->analyse([__DIR__ . '/../src/BarInstanceOfWithParams.php'], [
+			[
+				'Calling str_starts_with() is forbidden.',
+				11,
+			],
+			[
+				'Calling str_ends_with() is forbidden.',
+				13,
+			],
+			[
+				'Calling str_contains() is forbidden.',
+				16,
+			],
+			[
+				'Calling str_starts_with() is forbidden.',
+				26,
+			],
+			[
+				'Calling str_ends_with() is forbidden.',
+				28,
+			],
+			[
+				'Calling str_contains() is forbidden.',
+				31,
+			],
+			[
+				'Calling str_starts_with() is forbidden.',
+				42,
+			],
+			[
+				'Calling str_starts_with() is forbidden.',
+				43,
+			],
+			[
+				'Calling ltrim() is forbidden.',
+				59,
+			],
+			[
+				'Calling ltrim() is forbidden.',
+				70,
+			],
+			[
+				'Calling ltrim() is forbidden.',
+				71,
+			],
+			[
+				'Calling ltrim() is forbidden.',
+				82,
+			],
+		]);
+	}
+
+
 	public static function getAdditionalConfigFiles(): array
 	{
 		return [
diff --git a/tests/src/BarInstanceOfWithParams.php b/tests/src/BarInstanceOfWithParams.php
new file mode 100644
index 0000000..88b2766
--- /dev/null
+++ b/tests/src/BarInstanceOfWithParams.php
@@ -0,0 +1,85 @@
+<?php
+declare(strict_types = 1);
+
+namespace Waldo\Foo;
+
+class BarBase
+{
+
+	public function inHierarchy(): void
+	{
+		str_starts_with('foo', 'forbidden');
+		str_starts_with('foo', 'allowed');
+		str_ends_with('foo', 'forbidden');
+		str_ends_with('foo', 'allowed');
+		str_contains('foo', 'allowed_param');
+		str_contains('foo', 'other');
+	}
+
+}
+
+class BarBaseChild extends BarBase
+{
+
+	public function inHierarchy(): void
+	{
+		str_starts_with('foo', 'forbidden');
+		str_starts_with('foo', 'allowed');
+		str_ends_with('foo', 'forbidden');
+		str_ends_with('foo', 'allowed');
+		str_contains('foo', 'allowed_param');
+		str_contains('foo', 'other');
+	}
+
+}
+
+// outside the hierarchy: str_ends_with and str_contains calls are allowed regardless of params; str_starts_with is still disallowed (allowInInstanceOf)
+class BarOutside
+{
+
+	public function outsideHierarchy(): void
+	{
+		str_starts_with('foo', 'forbidden');
+		str_starts_with('foo', 'allowed');
+		str_ends_with('foo', 'forbidden');
+		str_ends_with('foo', 'allowed');
+		str_contains('foo', 'allowed_param');
+		str_contains('foo', 'other');
+	}
+
+}
+
+// test allowInInstanceOf + allowParamsInAllowed: allowed in hierarchy only when param is 'allowed_chars'
+class BarBaseForAllowParams extends BarBase
+{
+
+	public function inHierarchy(): void
+	{
+		ltrim('foo', 'allowed_chars');
+		ltrim('foo', 'other');
+	}
+
+}
+
+// outside the hierarchy: all ltrim calls are disallowed (allowInInstanceOf)
+class BarOutsideForAllowParams
+{
+
+	public function outsideHierarchy(): void
+	{
+		ltrim('foo', 'allowed_chars');
+		ltrim('foo', 'other');
+	}
+
+}
+
+class BarBaseChildForAllowParams extends BarBaseForAllowParams
+{
+
+	public function inHierarchy(): void
+	{
+		ltrim('foo', 'allowed_chars');
+		ltrim('foo', 'other');
+	}
+
+}