The Quaderno blog

  1. Imagen representing the connection of Amazon with Europe

    How Amazon FBA affects your EU VAT obligations

    EU VAT obligations are complicated for Amazon FBA sellers. Learn about e-commerce VAT rules, when Amazon is responsible, and how your business can comply.

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    How To Validate VAT Numbers On Easy Digital Downloads

    EDD is one of the most popular choices for selling products on WordPress. This is how you validate a VAT Numbers on Easy Digital Downloads with Quaderno.

  3. A hook with a credit card

    What Are Chargebacks and How Businesses Can Prevent Them

    Online businesses run an increased risk of chargebacks. Learn how to minimize the effects of a chargeback on your business.

  4. Illustration of a tag with patterns

    How to price your product: A step-by-step guide

    Learn now how to price your product with success according to the experts.

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    How credit card payments work

    How credit card system works, step by step - Quaderno

  6. Illustration of How a silly landing brought us more traffic.png

    How a silly landing brought us more traffic

    How a silly landing brought us more traffic

  7. Illustration of a box and tax-related items

    Everything you need to know about GST

    A complete Goods and Services Tax (GST) guide for businesses: learn GST rules, who must register, and how to stay compliant while growing your online business.

  8. Illustration of a laptop with different elements related to an online course.

    13 Top Course Creation Software To Try in 2025

    Looking to create and sell online courses? Compare top course creation software tools to find the best fit for building and scaling your business.

  9. Illustration of Qoodle questioning what is Vies

    What is VIES?

    Learn what the EU’s VIES (VAT Information Exchange System) system is, how to validate VAT numbers, and why it’s essential for cross-border trade & compliance.

  10. Illustration of Is A Recurring Revenue Model Right For Your Digital Business?.png

    Is A Recurring Revenue Model Right For Your Digital Business?

    Are you looking at a recurring revenue model for a digital business? Let’s take a look at the pros and cons of this model.

  11. Illustration of Understand the Top Financial Metrics for Your SaaS Business.png

    Understand the Top Financial Metrics for Your SaaS Business

    With digital products or monthly subscriptions, traditional financial metrics aren’t good indicators. In this article, we break down the top financial metrics for healthy SaaS businesses.

  12. Illustration of mountains with a linear ascending chart

    Top SaaS financial profitability metrics

    Running a profitable company is important. Understand the SaaS financial metrics your business should use to measure profitability.

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    Cash Flow Planning for SaaS Business

    Your liquidity is your business is life-blood. Ensure present and future success through good cash flow planning. Download your free cash flow template.

  14. Illustration of a filling form

    How to file a sales tax return in just a few minutes

    Here's how to file a sales tax return in any US state by following these basic guidelines. Reporting and paying sales tax can be done in just a few minutes!

  15. 16 Best SaaS Marketing Strategies for Success in 2025

    The SaaS landscape is always changing. Here are the best SaaS marketing strategies for this year, explained with pros, cons and how-to instructions.

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    How To Validate VAT Numbers Using WooCommerce

    Validate VAT Numbers using the Quaderno tax plugin for WooCommerce is the quicker and easier way to validate VAT numbers even if you know nothing about it.

  17. Illustration of Qoodle relaxing

    Which US States Hold "Sales Tax Holidays" and When Do They Hold Them?

    If you are a consumer in one of the states listed in this blog post, buying during a sales tax holiday can help you save money!

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    How To Calculate Sales Tax If You Are Selling On Amazon

    If you’re selling on Amazon, the process for calculating sales tax can be complicated. Learn how Quaderno can help you out!

  19. Illustration of Qoodle explaning the differences between sales tax, VAT and GST

    Sales Tax vs VAT vs GST - Your Guide to Consumption Taxes

    What’s the difference between VAT, GST & sales tax? Learn how these taxes work worldwide and what your business must do to comply.

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    Is Shipping Taxable in the US?

    Unsure if shipping charges are taxable in the US? Learn the rules state by state, avoid costly mistakes, and keep your business compliant.

  21. Illustration of Qoodle pushing a trolley

    How to handle sales tax for physical products around the world

    Selling physical goods? Learn how VAT, GST & sales tax apply globally, and discover tools to simplify compliance across multiple countries.