diff --git a/conservancy/supporters/views.py b/conservancy/supporters/views.py
index 68160f0aa7ddfffa577202f7541d7dd5ca80fb4f..5af28a40abaf1eef6a01246cd526b8b536182856 100644
--- a/conservancy/supporters/views.py
+++ b/conservancy/supporters/views.py
@@ -45,7 +45,8 @@ def sponsors(request):
     return render(request, "supporters/sponsors.html", c)
 
 
-def create_checkout_session(reference_id, email, amount, base_url):
+def create_checkout_session(reference_id, email: str, amount: int, recurring: bool, base_url: str):
+    # https://docs.stripe.com/payments/accept-a-payment
     YOUR_DOMAIN = base_url
     try:
         checkout_session = stripe.checkout.Session.create(
@@ -55,13 +56,15 @@ def create_checkout_session(reference_id, email, amount, base_url):
                     'price_data': {
                         'currency': 'usd',
                         'product_data': {'name': 'Contribution'},
-                        'unit_amount': amount * 100,
+                        'unit_amount': amount * 100,  # in cents
+                        # https://docs.stripe.com/products-prices/pricing-models#variable-pricing
+                        'recurring': {'interval': 'month'} if recurring else None,
                     },
                     'quantity': 1,
                 },
             ],
             customer_email=email,
-            mode='payment',
+            mode='subscription' if recurring else 'payment',
             success_url=YOUR_DOMAIN + '/sustainer/success/?session_id={CHECKOUT_SESSION_ID}',
             cancel_url=YOUR_DOMAIN + '/sustainer/stripe/',
         )
@@ -78,9 +81,13 @@ def sustainers_stripe2(request):
     if request.method == 'POST':
         form = forms.SustainerForm(request.POST)
         if form.is_valid():
-            order = form.save()
+            order = form.save(commit=False)
+            if form.data['recurring'] == 'monthly':
+                order.amount = form.cleaned_data['amount_monthly']
+                order.monthly_recurring = True
+            order.save()
             base_url = f'{request.scheme}://{request.get_host()}'
-            stripe_checkout_url = create_checkout_session(order.id, order.email, order.amount, base_url)
+            stripe_checkout_url = create_checkout_session(order.id, order.email, order.amount, order.monthly_recurring, base_url)
             return redirect(stripe_checkout_url)
     else:
         form = forms.SustainerForm()