How to create a Flat-rate pricing model
If your pricing model resembles something that is independent of a metric and is charged on a recurring basis, then this Flate-rate Subscription guide is for you. You can also consider using flat-rate if your product is at a very early stage, and the SaaS company just wants to start charging customers.
Once you have established how many different plans you are to have, you need to create a product for each of them. For example, let's take a model that will have two pricing plans (Basic and Pro). In this case we will create a product for each of these. Creating a product in "Stripe" is as simple as clicking "+ Product"
If you would like to use a yearly pricing plan instead of monthly or in addition to a monthly plan, there is only a small change in the process to be made. When creating your product you would create an additional price and set the recurring rate to yearly.
Now that we are done creating the products, for Billflow to recognize these products as a single service we need to tag it with an "sb_service" tag. This tag should be the same for all products(pricing plans) that are in the model. Next we tag each with a unique "sb_tier" that corresponds to the plan. That means we have 2 unique "sb_tier" tags for our example.
Finally, we go back to Billflow and refresh the "Pricing Plan" page. We should see our pricing plan pop up.