In order to add sales tax codes to your Rerun account, go to the Settings tab > Taxes. Sales tax codes can also be imported from your accounting software. You can read more about this in the integration section.

On the Settings > Taxes tab, you will need to enter in the tax code, description, and percentage, and click Add to save them within your Rerun account. These sales tax codes will be accessible when you add a customer to a payment stream so that you can apply them to the appropriate customers. You are allowed to add up to two sales tax codes per customer per payment stream.