ThriveCart - How to issue invoices?

Sales platforms for digital creators are growing like mushrooms after rain. Beyond all-in-one ecosystems such as Kajabi or Web2Learn, "carts" are gaining increasing popularity -- software for finalizing transactions and managing payments. ThriveCart is one of the more recognizable solutions in this category. It works as an independent checkout that you can connect to your webinar, template shop, or course offering. Creators praise it for its sales funnel configuration capabilities and the lack of monthly fees with the basic license. If you sell in Poland, however, the fundamental question becomes: how to properly issue VAT invoices to avoid trouble with the tax office and the growing KSeF requirements? This article answers that question and complements previous publications about invoicing in Kajabi, showing the unique aspects of ThriveCart.

What is ThriveCart and what does it have to do with invoices?

ThriveCart is SaaS software designed for handling digital sales. It enables creating one-time offers, subscriptions, upsells, and order bumps, and integrates with the Stripe or PayPal payment processor. The tool has a built-in mechanism for sending purchase confirmations. After each successful transaction, the customer receives an email with a PDF invoice. Reviews highlight that ThriveCart automatically generates an "invoice receipt" containing the seller's and buyer's addresses along with brand graphics. Authors praise this automation because it saves time and makes customers feel more confident.

The invoice generated by ThriveCart is divided into sections: seller details (company, address, VAT number), buyer details, product description, net amount, VAT, and gross amount. In account settings, you can enter a custom numbering prefix (e.g., "TC/2025/"), add a company logo, and specify the currency. ThriveCart integrates with solutions for automatic sales tax calculation; in the Pro+ model, it allows downloading bulk invoices as a ZIP file, simplifying settlements. The standard package includes currency, language, and VAT rate settings -- allowing sales in over 100 countries with invoice appearance tailored to local requirements.

How ThriveCart handles invoices and taxes

In the basic scenario, ThriveCart sends the customer a PDF invoice after each purchase. The user can define numbering, fill in company details, and enable automatic invoice sending from the product settings level. For international transactions, the system automatically calculates the VAT rate based on the buyer's country and product type. This streamlines sales for those who do not want to configure external tax modules. ThriveCart also has a "Bulk Invoice Downloads" feature; under the Pro+ license, you can filter documents by time, product, or customer and download the entire package of invoices for tax settlements. This is useful during periodic reports -- the system sends a bulk PDF package by email, saving hours of work.

In the admin section, you can also enable "tax-inclusive pricing" mode, which presents the customer with a gross price including tax. Additionally, in the "Invoices & Languages" field, several invoice languages are available, allowing you to send documents in English or German while maintaining compliance with local law. Despite these conveniences, ThriveCart is an American platform and does not support Polish electronic invoicing schemas -- more on this in the next section.

ThriveCart's limitations in the Polish reality

Although ThriveCart automatically generates PDF invoices, the tool is not prepared for the growing requirements of European e-invoicing regulations. In an analysis aimed at EU creators, it was noted that ThriveCart generates PDF invoices with a VAT number, reverse charge logic, and customer data. However, the author points out that from 2026, many EU countries, including Poland, will introduce mandatory structured invoicing (XML) and submission to national e-invoicing systems (in Poland -- KSeF). Standard PDF files may not meet these requirements, especially in B2B transactions. Therefore, the article recommends deactivating ThriveCart's native invoicing module and using external accounting software that ensures compliance with local law.

Another limitation is the lack of native integration with Polish accounting systems such as Fakturownia.pl or iFirma. ThriveCart stores data on servers in the United States, which may be problematic in the context of GDPR and data localization requirements. Furthermore, the system is entirely in English and has no Polish-language interface, which for some entrepreneurs is a barrier. It should also be noted that the customer's NIP (tax identification number) is neither verified nor required; for B2B sales in Poland, it must be collected manually, e.g., via the "Company VAT number" field in the checkout form.

Ways to issue an invoice from ThriveCart in Poland

1. Using built-in invoices (B2C only)

If you sell e-books or courses to individuals (B2C) and your sales volume is small, you can use ThriveCart's native feature. In the product settings, enable the automatic invoice option, enter your company details, and set a numbering prefix. Make sure the VAT rates are correct for Poland and apply reverse charge for sales to EU businesses if needed. Keep in mind, however, that the PDF invoice sent by ThriveCart will not be compatible with the upcoming KSeF requirement -- you will need to later transfer it to your accounting system.

2. Data export and import to Fakturownia

The second option is to download sales data from ThriveCart and import it into Fakturownia.pl. This can be done in two ways:

1. Payment processor report: If you use Stripe, generate a payment report with transaction details (date, amount, currency, buyer email) and import it into Fakturownia, mapping columns to the appropriate fields.
2. Bulk Invoice Downloads: ThriveCart Pro+ users can download a PDF package of invoices for a given period. Although this set contains customer data, you still need to enter it into Fakturownia manually or via a script to generate invoices compliant with Polish regulations.

This method works if sales volume is small and you have time for manual data transfer. The downside is the need for constant exchange rate updates, adding NIP numbers, and manually sending invoices.

3. Integration through automation tools

If your sales are growing and you want to automate the process, you can use n8n, Make, or Zapier. Each of these integrators allows creating a flow: "when a new order appears in ThriveCart, create an invoice in Fakturownia." Using the ThriveCart API, you can subscribe to order_created and order_payment_product events, retrieve order data, and then use the Fakturownia API to issue the document. When creating such a scenario, keep in mind the limitations: you must map fields yourself (first name, last name, email, NIP number), ensure correct currency conversions, and test the flow with each platform update. n8n and Make require basic technical knowledge, and a higher number of transactions may generate costs for executed operations.

4. Dedicated Striptu.com integration

The simplest way to issue legally compliant invoices from ThriveCart is to use a dedicated integration such as striptu.com. This is a SaaS designed for Polish creators that connects ThriveCart, Kajabi, and Stripe with Fakturownia. After each sale in ThriveCart, the tool automatically creates a VAT invoice in Fakturownia, handles NIP number transfer, recognizes subscriptions, and retrieves exchange rates. Unlike general integrators, striptu.com works immediately after connection and does not require building your own flows.

The user can also use the NIP enforcement feature -- if the customer does not provide one, the system will prompt for completion before issuing the invoice. This ensures invoices are complete and data compliant with KSeF requirements. This solution is paid, but predictable: you pay a monthly subscription and get sales automation plus compliance with Polish law.

Challenges and practical tips

1. Collecting the NIP number. ThriveCart does not require customers to provide a NIP. Set the "Company VAT number" field as mandatory for B2B offers and inform the buyer that without a NIP, they will not receive a VAT invoice.
2. Exchange rates. When selling in euros or dollars, remember to convert revenue to Polish zloty using the NBP exchange rate from the day preceding the sale. Fakturownia allows manually setting the rate when issuing an invoice.
3. GDPR and data localization. ThriveCart processes data outside the EU and requires a Data Processing Agreement (DPA). You can request such an agreement from ThriveCart support or transfer data to a Polish accounting system as soon as possible after the sale.
4. KSeF and e-invoicing. From April 1, 2026, issuing structured invoices (XML) via KSeF will be mandatory in Poland. ThriveCart does not support this standard, so prepare to transfer documents to Fakturownia or another system that has KSeF integration.

Summary

ThriveCart is a convenient tool for handling sales and marketing funnels that offers automatic PDF invoice generation and advanced tax features. Thanks to bulk invoice downloads and numbering prefix settings, it simplifies life for course and digital product creators. However, in the context of Polish law, its native invoicing module has limitations: it is not adapted to KSeF, does not verify NIP numbers, and operates on US-based servers. If you conduct B2B sales in Poland, consider disabling automatic invoicing in ThriveCart and using a dedicated tool that connects with Fakturownia and ensures compliance with local requirements. Options such as manual CSV import or integrators like n8n may work for smaller sales volumes, but as transaction numbers grow, a "plug and play" integration like striptu.com works best. This keeps your accounting in order, customers receive correct VAT invoices, and you maintain the comfort of working in your favorite sales system.