Close invoices for a specific Stripe customer

stripe_close_customer_invoices.rb

# Description: close open invoices on a Stripe customer
# Link: https://gist.github.com/iloveitaly/3e4447e6d61cce7b79942296d9400ab0

require 'stripe'

Stripe.api_key = ENV['STRIPE_KEY']

customer = Stripe::Customer.retrieve('cus_123')
customer.invoices.data.each do |invoice|
  if !invoice.closed
    # NOTE you can also mark as invoice as forgiven: `invoice.forgiven = true`
    #      this has the same effect in NetSuite of creating a credit memo
    invoice.closed = true
    invoice.save
  end
end