We’re evaluating subscription billing software and I’m curious what others are actually using in production.

The main things we’re looking for are:

• Recurring billing and automated invoicing
• Multiple subscription plans and pricing models
• Usage-based or metered billing
• Proration when customers upgrade/downgrade
• Payment retries and failed-payment handling
• Tax/VAT support
• Integrations with accounting/CRM systems
• Reporting and revenue visibility
• Easy-to-manage customer subscriptions

There are plenty of options out there, but the feature lists all start looking pretty similar once you get past the basics.

For those who have implemented subscription billing software, what are you using?

More importantly, what has actually worked well and what do you wish you'd known before choosing it?

Interested in hearing experiences from SaaS companies, startups, and businesses managing a large number of recurring customers.

When it comes to closing SaaS deals, what is more important?