diff --git a/internal/controllers/subscriptions.go b/internal/controllers/subscriptions.go
index 6fa7b5c..fdbc7c6 100644
--- a/internal/controllers/subscriptions.go
+++ b/internal/controllers/subscriptions.go
@@ -113,8 +113,13 @@ func (sa *SubscriptionAdder) AddSubscription(tx *gorm.DB, req model.Subscription
 		return sa.subscriptionError(*username, err.Error())
 	}
 
+	// Define the subscription options.
+	opts := &model.SubscriptionOptions{
+		Paid: paid,
+	}
+
 	// Add the subscription.
-	sub, err := db.SubscribeUserToPlan(sa.cfg.Ctx, tx, user, plan, *paid)
+	sub, err := db.SubscribeUserToPlan(sa.cfg.Ctx, tx, user, plan, opts)
 	if err != nil {
 		log.Error(err)
 		return sa.subscriptionError(*username, err.Error())
diff --git a/internal/controllers/users.go b/internal/controllers/users.go
index 1566f55..3696f83 100644
--- a/internal/controllers/users.go
+++ b/internal/controllers/users.go
@@ -402,8 +402,13 @@ func (s Server) UpdateSubscription(ctx echo.Context) error {
 
 		log.Debug("deactivated all active plans for the user")
 
+		// Define the subscription options.
+		opts := &model.SubscriptionOptions{
+			Paid: &paid,
+		}
+
 		// Subscribe the user to the plan.
-		subscription, err := db.SubscribeUserToPlan(context, tx, user, plan, paid)
+		subscription, err := db.SubscribeUserToPlan(context, tx, user, plan, opts)
 		if err != nil {
 			return model.Error(ctx, err.Error(), http.StatusInternalServerError)
 		}
diff --git a/internal/db/subscriptions.go b/internal/db/subscriptions.go
index 58fdc0a..3c73f01 100644
--- a/internal/db/subscriptions.go
+++ b/internal/db/subscriptions.go
@@ -14,11 +14,15 @@ import (
 
 // QuotasFromPlan generates a set of quotas from the plan quota defaults in a plan. This function assumes that the
 // given plan already contains the plan quota defaults.
-func QuotasFromPlan(plan *model.Plan) []model.Quota {
+func QuotasFromPlan(plan *model.Plan, periods int32) []model.Quota {
 	result := make([]model.Quota, len(plan.PlanQuotaDefaults))
 	for i, quotaDefault := range plan.PlanQuotaDefaults {
+		quotaValue := quotaDefault.QuotaValue
+		if quotaDefault.ResourceType.Consumable {
+			quotaValue *= float64(periods)
+		}
 		result[i] = model.Quota{
-			Quota:          quotaDefault.QuotaValue,
+			Quota:          quotaValue,
 			ResourceTypeID: quotaDefault.ResourceTypeID,
 		}
 	}
@@ -27,21 +31,21 @@ func QuotasFromPlan(plan *model.Plan) []model.Quota {
 
 // SubscribeUserToPlan subscribes the given user to the given plan.
 func SubscribeUserToPlan(
-	ctx context.Context, db *gorm.DB, user *model.User, plan *model.Plan, paid bool,
+	ctx context.Context, db *gorm.DB, user *model.User, plan *model.Plan, opts *model.SubscriptionOptions,
 ) (*model.Subscription, error) {
 	wrapMsg := "unable to add user plan"
 	var err error
 
 	// Define the user plan.
 	effectiveStartDate := time.Now()
-	effectiveEndDate := effectiveStartDate.AddDate(1, 0, 0)
+	effectiveEndDate := opts.GetEndDate(effectiveStartDate)
 	subscription := model.Subscription{
 		EffectiveStartDate: &effectiveStartDate,
 		EffectiveEndDate:   &effectiveEndDate,
 		UserID:             user.ID,
 		PlanID:             plan.ID,
-		Quotas:             QuotasFromPlan(plan),
-		Paid:               paid,
+		Quotas:             QuotasFromPlan(plan, opts.GetPeriods()),
+		Paid:               opts.IsPaid(),
 	}
 	err = db.WithContext(ctx).Create(&subscription).Error
 	if err != nil {
@@ -69,7 +73,7 @@ func SubscribeUserToDefaultPlan(ctx context.Context, db *gorm.DB, username strin
 	}
 
 	// Subscribe the user to the plan.
-	return SubscribeUserToPlan(ctx, db, user, plan, false)
+	return SubscribeUserToPlan(ctx, db, user, plan, &model.SubscriptionOptions{})
 }
 
 // GetActiveSubscription retrieves the user plan record that is currently active for the user. The effective start
diff --git a/internal/model/subscriptions.go b/internal/model/subscriptions.go
index ee17ecb..f116cb8 100644
--- a/internal/model/subscriptions.go
+++ b/internal/model/subscriptions.go
@@ -1,5 +1,48 @@
 package model
 
+import "time"
+
+// SubscriptionOptions represents options that can be applied to a new subscription.
+//
+// swagger: model
+type SubscriptionOptions struct {
+	// True if the user paid for the subscription.
+	Paid *bool `json:"paid"`
+
+	// The number of periods included in the subscription.
+	Periods *int32 `json:"periods"`
+
+	// The effective end date of the subscription.
+	EndDate *time.Time `json:"end_date"`
+}
+
+// Return the appropriate paid flag for the subscription options.
+func (o *SubscriptionOptions) IsPaid() bool {
+	if o.Paid == nil {
+		return false
+	} else {
+		return *o.Paid
+	}
+}
+
+// Return the number of periods for the subscription options.
+func (o *SubscriptionOptions) GetPeriods() int32 {
+	if o.Periods == nil {
+		return 1
+	} else {
+		return *o.Periods
+	}
+}
+
+// Return the effective end date for the subscription options.
+func (o *SubscriptionOptions) GetEndDate(startDate time.Time) time.Time {
+	if o.EndDate == nil {
+		return startDate.AddDate(int(o.GetPeriods()), 0, 0)
+	} else {
+		return *o.EndDate
+	}
+}
+
 // SubscriptionRequest represents a request for a single subscription.
 //
 // swagger: model