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The Quaderno blog

  1. Illustration of How To Validate VAT Numbers On Easy Digital Downloads

    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.

  2. Illustration of a letter of a sales tax permit

    How to Register for a Sales Tax Permit

    Do you need to register for a sales tax permit? Determine whether or not you need a seller's license, and find out how to get one.

  3. Illustration of a laptop showing a VAT return with numbered boxes for sales and purchases

    How to Prepare a VAT Return: Boxes and a Worked Example

    A VAT return is a summary, not a transaction list, and preparing one is mostly a data problem. Here are the four figures it needs, what belongs in each box, and a full quarter worked through twice.

  4. Illustration of a laptop with sales tax return notification

    How to Prepare a Sales Tax Return: A Line-by-Line Guide

    Every state form asks for the same handful of numbers in the same order. Here's what each line wants, where the figure comes from, and how to file and remit once you have them.

  5. Illustration of a laptop receiving GST notifications

    How to prepare a GST return

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

  6. Illustration of How to Manage Tax When Using Thinkific

    How to Manage Tax When Using Thinkific

    Selling online courses using Thinkific? Learn here how to capitalize on your knowledge online while managing sales tax easily!

  7. 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.

  8. Illustration of a laptop filing a VAT return online with a quarterly deadline calendar

    How to File a VAT Return Online: Steps and Deadlines

    Filing is the short part of the job. Here is how to submit a VAT return online, when each type is due, and what changes once you are registered in more than one country.

  9. Illustration of IFRS atom

    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.

  10. GAAP word illustrated with charts

    What are Generally Accepted Accounting Principles (GAAP)

    Generally accepted GAAP principles (GAAP) apply to all companies in the US. Learn all the GAAP rules for your business accounting.

  11. Illustration of Qoodle verifying some VAT numbers

    VAT Number Lookup: How to Check if a Company Is VAT Registered

    How to run a VAT number lookup in the EU, the UK and South Africa, how to find a company VAT number by name, and what to do when the number comes back invalid.

  12. Illustration of Quaderno Pro Tip #1: Automate your expenses

    Quaderno Pro Tip #1: Automate your expenses

    Expense reporting can be tricky, but Quaderno simplifies it for you with automatic recurring purchases, beautiful balance sheets, and easy-to-read reports.

  13. Illustration of Qoodle with a hat and keeping a calculator

    US Sales Tax Guide: Everything You Need to Know

    Whether you have a business in the US or you’re a remote seller with US customers, we’re here with a detailed Guide on US sales tax.

  14. 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.

  15. Illustration of Qoodle cutting a price tag

    What is reverse charge and how does it work?

    Reverse charge is a mechanism that requires buyers to report & remit taxes, instead of sellers. Understand how it works and how your business can comply.

  16. Box in parachute

    Guide to Dropshipping Sales Tax

    Dropshipping sales tax and VAT is a tricky part of e-commerce. Learn about the tax obligations for online businesses and dropshippers selling B2B and B2C.

  17. How to calculate sales tax as a remote seller

    Remote seller sales tax guide 2026: Nexus and calculation

    Just because you are a remote seller doesn't mean you are off the hook when it comes to taxes. Learn how to calculate US sales tax as a remote seller!

  18. 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.

  19. Illustration of Fulfillment by Amazon, accounting by Quaderno

    Fulfillment by Amazon, accounting by Quaderno

    Quaderno helps you fill in the accounting-shaped holes in what Fulfillment by Amazon can do for you. This article will show you how to improve and automate your FBA accounting.

  20. Illustration of Qoodle using a computer surrounded by 12 starts

    EU VAT for remote sellers

    Selling into the EU from abroad? Discover VAT rules for remote sellers, including thresholds, OSS schemes, and how to register hassle-free.

  21. Illustration of E-commerce EU VAT changes in 2021

    E-commerce EU VAT changes in 2021

    EU VAT ecommerce rules will change for B2C, imported goods, and marketplaces. Make sure you’re prepared to comply with it!