diff --git a/helm/jenkins/templates/_helpers.tpl b/helm/jenkins/templates/_helpers.tpl
new file mode 100644
index 0000000..f99d668
--- /dev/null
+++ b/helm/jenkins/templates/_helpers.tpl
@@ -0,0 +1,43 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "jenkins.name" -}}
+{{- .Chart.Name }}
+{{- end }}
+
+{{/*
+Full name: release + chart name (trimmed to 63 chars)
+*/}}
+{{- define "jenkins.fullname" -}}
+{{- printf "%s-%s" .Release.Name .Chart.Name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels applied to all resources
+*/}}
+{{- define "jenkins.labels" -}}
+helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+app.kubernetes.io/name: {{ include "jenkins.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels used in Deployment + Service matchLabels
+*/}}
+{{- define "jenkins.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "jenkins.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+ServiceAccount name
+*/}}
+{{- define "jenkins.serviceAccountName" -}}
+{{- if .Values.rbac.enabled }}
+{{- .Values.rbac.serviceAccountName }}
+{{- else }}
+default
+{{- end }}
+{{- end }}