diff --git a/README.md b/README.md
index ca883bf..7911dc6 100644
--- a/README.md
+++ b/README.md
@@ -140,13 +140,6 @@ fmt.Println("resend scheduled for %d notifications", res.Count)
   httpResp, err := client.PostRequest(&myCouponUpgradeRequest{PaymentID: "3293", Coupon: "whatever"})
   ```
 
-- `tinkoff.IsRefundableStatus(s)` allows you to check if the payment can be refunded according to policies provided by Tinkoff API doc:
-  ```go
-  if !tinkoff.IsRefundableStatus(payment.Status) {
-      return errors.New("payment can't be refunded")
-  }
-  ```
-
 ## References
 The code in this repo based on some code from [koorgoo/tinkoff](https://github.com/koorgoo/tinkoff). Differences:
 - Support for API v2
diff --git a/status.go b/status.go
index 832843b..9ad6891 100644
--- a/status.go
+++ b/status.go
@@ -20,13 +20,3 @@ const (
 	StatusPartialRefunded = "PARTIAL_REFUNDED" // Возвращен частично
 	StatusRefunded        = "REFUNDED"         // Возвращен полностью
 )
-
-func IsRefundableStatus(status string) bool {
-	switch status {
-	case StatusNew,
-		StatusAuthorized,
-		StatusConfirmed:
-		return true
-	}
-	return false
-}