diff --git a/pkg/helmexec/exec.go b/pkg/helmexec/exec.go
index 0fa711d8..834d09f2 100644
--- a/pkg/helmexec/exec.go
+++ b/pkg/helmexec/exec.go
@@ -258,10 +258,6 @@ func (helm *execer) SyncRelease(context HelmContext, name, chart string, flags .
 		env["HELM_TILLER_HISTORY_MAX"] = strconv.Itoa(context.HistoryMax)
 	}
 
-	if helm.IsHelm3() && helm.postRenderer != "" {
-		flags = append(flags, "--post-renderer", helm.postRenderer)
-	}
-
 	out, err := helm.exec(append(append(preArgs, "upgrade", "--install", name, chart), flags...), env, nil)
 	helm.write(nil, out)
 	return err
@@ -401,9 +397,6 @@ func (helm *execer) TemplateRelease(name string, chart string, flags ...string)
 		args = []string{"template", chart, "--name", name}
 	}
 
-	if helm.IsHelm3() && helm.postRenderer != "" {
-		flags = append(flags, "--post-renderer", helm.postRenderer)
-	}
 	out, err := helm.exec(append(args, flags...), map[string]string{}, nil)
 
 	var outputToFile bool
@@ -447,10 +440,6 @@ func (helm *execer) DiffRelease(context HelmContext, name, chart string, suppres
 		overrideEnableLiveOutput = &enableLiveOutput
 	}
 
-	if helm.IsHelm3() && helm.postRenderer != "" {
-		flags = append(flags, "--post-renderer", helm.postRenderer)
-	}
-
 	out, err := helm.exec(append(append(preArgs, "diff", "upgrade", "--allow-unreleased", name, chart), flags...), env, overrideEnableLiveOutput)
 	// Do our best to write STDOUT only when diff existed
 	// Unfortunately, this works only when you run helmfile with `--detailed-exitcode`
diff --git a/pkg/state/helmx.go b/pkg/state/helmx.go
index b1a46508..0aa5a8ab 100644
--- a/pkg/state/helmx.go
+++ b/pkg/state/helmx.go
@@ -26,6 +26,23 @@ func (st *HelmState) appendHelmXFlags(flags []string, release *ReleaseSpec) ([]s
 	return flags, nil
 }
 
+// append post-renderer flags to helm flags
+// nolint: unparam
+func (st *HelmState) appendPostRenderFlags(flags []string, release *ReleaseSpec, helm helmexec.Interface) ([]string, error) {
+	if helm.IsHelm3() {
+		switch {
+		// helm.GetPostRenderer() comes from cmd flag.
+		case helm.GetPostRenderer() != "":
+			flags = append(flags, "--post-renderer", helm.GetPostRenderer())
+		case release.PostRenderer != nil && *release.PostRenderer != "":
+			flags = append(flags, "--post-renderer", *release.PostRenderer)
+		case st.HelmDefaults.PostRenderer != nil && *st.HelmDefaults.PostRenderer != "":
+			flags = append(flags, "--post-renderer", *st.HelmDefaults.PostRenderer)
+		}
+	}
+	return flags, nil
+}
+
 type Chartify struct {
 	Opts  *chartify.ChartifyOpts
 	Clean func()
diff --git a/pkg/state/state.go b/pkg/state/state.go
index 202b54c2..35a0ca16 100644
--- a/pkg/state/state.go
+++ b/pkg/state/state.go
@@ -2521,12 +2521,9 @@ func (st *HelmState) flagsForUpgrade(helm helmexec.Interface, release *ReleaseSp
 		return nil, nil, err
 	}
 
-	if helm.IsHelm3() && helm.GetPostRenderer() == "" {
-		if release.PostRenderer != nil && *release.PostRenderer != "" {
-			flags = append(flags, "--post-renderer", *release.PostRenderer)
-		} else if st.HelmDefaults.PostRenderer != nil && *st.HelmDefaults.PostRenderer != "" {
-			flags = append(flags, "--post-renderer", *st.HelmDefaults.PostRenderer)
-		}
+	flags, err = st.appendPostRenderFlags(flags, release, helm)
+	if err != nil {
+		return nil, nil, err
 	}
 
 	common, clean, err := st.namespaceAndValuesFlags(helm, release, workerIndex)
@@ -2556,12 +2553,9 @@ func (st *HelmState) flagsForTemplate(helm helmexec.Interface, release *ReleaseS
 
 	flags = st.appendApiVersionsFlags(flags, release)
 
-	if helm.IsHelm3() && helm.GetPostRenderer() == "" {
-		if release.PostRenderer != nil && *release.PostRenderer != "" {
-			flags = append(flags, "--post-renderer", *release.PostRenderer)
-		} else if st.HelmDefaults.PostRenderer != nil && *st.HelmDefaults.PostRenderer != "" {
-			flags = append(flags, "--post-renderer", *st.HelmDefaults.PostRenderer)
-		}
+	flags, err = st.appendPostRenderFlags(flags, release, helm)
+	if err != nil {
+		return nil, nil, err
 	}
 
 	common, files, err := st.namespaceAndValuesFlags(helm, release, workerIndex)
@@ -2605,12 +2599,9 @@ func (st *HelmState) flagsForDiff(helm helmexec.Interface, release *ReleaseSpec,
 		return nil, nil, err
 	}
 
-	if helm.IsHelm3() && helm.GetPostRenderer() == "" {
-		if release.PostRenderer != nil && *release.PostRenderer != "" {
-			flags = append(flags, "--post-renderer", *release.PostRenderer)
-		} else if st.HelmDefaults.PostRenderer != nil && *st.HelmDefaults.PostRenderer != "" {
-			flags = append(flags, "--post-renderer", *st.HelmDefaults.PostRenderer)
-		}
+	flags, err = st.appendPostRenderFlags(flags, release, helm)
+	if err != nil {
+		return nil, nil, err
 	}
 
 	common, files, err := st.namespaceAndValuesFlags(helm, release, workerIndex)