The Quaderno blog

  1. Illustration of a book and the differences between bookkeeping and accounting

    Bookkeeping vs. accounting: What are the differences?

    Is bookkeeping the same as accounting? Short answer: no! Learn the difference between them and the basics of your financial and accounting reports.

  2. Illustration of The difference between US Use Tax and Sales Tax.png

    Use tax vs. sales tax

    Use tax and sales tax are two different systems in some US states. Learn how use tax works and how you can comply with these rules.

  3. Illustration of US showcasing weather icons with percentage symbols

    How the Wayfair Decision on US Sales Tax Will Affect Your Business?

    The Wayfair decision revolutionizes online sales tax in the US with new economic nexus laws. Here's what you need to know.

  4. image of an invoice transforming into bits

    E-invoicing in Spain & Digital Reporting Requirements

    Spanish e-invoicing & e-reporting rules apply to all B2B businesses. Learn about how electronic invoices work, when it’s required & how to comply.

  5. map of Portugal

    E-invoicing in Portugal & Digital Reporting Requirements

    Portugal e-invoicing & digital reporting rules apply to all B2G businesses and some others. Learn about how electronic invoices work, when it’s required & how to comply.

  6. map of France

    E-invoicing in France & Digital Reporting Requirements

    French e-invoicing & e-reporting rules apply to all B2B businesses. Learn about how electronic invoices work, when it’s required & how to comply.

  7. Illustration of Germany with e-invoicing

    Germany E-invoicing & Digital Reporting Requirements

    German e-invoicing & e-reporting rules apply to all B2B businesses. Learn about how electronic invoices work, when it’s required & how to comply.

  8. Illustration of How to comply with IFRS accounting standards.png

    IFRS standards: What they are and how to comply

    IFRS accounting standards apply in over 166 jurisdictions around the world. As an online business, learn about the them and if you’re required to comply.

  9. A representation of the integration between Kajabi and Quaderno

    Automate Invoices and Handle Tax Calculations on Kajabi

    We’ll explain how Kajabi sales tax works and how to automatically send invoices for your sales with Quaderno.

  10. Illustration of a SaaS Income Statement with coins

    What should a SaaS income statement look like in 2025?

    Building the financial statements for a SaaS business is unique. Learn how to structure a SaaS income statement for your company.

  11. Illustration of an ecommerce on a mobile screen

    An Introduction to Online Marketplace VAT Rules

    Online marketplace VAT comprehensive guide. Unlock the fundamentals of how VAT applies to eCommerce and the tax compliance criteria for a seamless process.

  12. An illustration of a pile of papers

    What is accrual accounting and how is it beneficial for SaaS?

    Accrual accounting is a necessary business practice for SaaS and subscription models, along with MRR and revenue recognition. Learn why it’s so important.

  13. Illustration of Qoodle starting a new online business

    How to Start an Online Business in 2025

    Want to start a business online? Learn how to start an online business, from concept to launch, and turn your idea into a successful brand!

  14. Illustration of Top SaaS Financial Metrics That Measure Company Profitability.png

    Top SaaS Financial Profitability Metrics

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

  15. Illustration of Qoodle calculating Irish VAT OSS

    What is a VAT OSS return and how to submit It as an Irish (Non-EU) business?

    Follow these steps to submit a VAT OSS Return in Ireland as a Non-EU Business and make your EU VAT returns easier.

  16. Illustration representing an ecommerce

    What is distance selling? How it works in the EU

    Distance selling in the EU must follow specific rules and e-commerce tax regulations. Here’s how to make sure your contracts and EU VAT are 100% compliant!

  17. 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.

  18. Step by step Sales Tax guide

    Sales Tax, VAT & GST Compliance Guide for Digital Consultants in 2025

    Master sales tax (state-by-state), VAT (EU), and GST (global) compliance for consulting services. Learn tools to automate tax collection and filings.

  19. 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.

  20. Illustration of a laptop with sales tax return notification

    How to prepare a sales tax return

    File returns and claim sales tax deductions in just minutes. These accounting and reporting tips will help you prepare and declare US sales tax returns quickly.

  21. Illustration of 9 Accounting Mistakes That Could Risk Your Business.png

    9 Accounting Mistakes That Could Risk Your Business

    Proper accounting forms the foundation of your business. Avoid these 9 common business accounting mistakes to reduce your risk.