Tax Basics
Marketplace tax laws around the world in 2026
Following the rise of tax laws for e-commerce platforms, we’ve created a comprehensive list of every country and jurisdiction in the world with marketplace tax laws.
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Articles by Annie
82 articles
VATMaking Tax Digital: How to follow UK VAT guidelines
Making Tax Digital is HMRC’s way of digitizing all bookkeeping and accounting in the UK to save you (and them) money in the long run. Here’s the VAT policy.
US Sales TaxSales tax by state: Rates and state-by-state guides
Stay compliant with sales tax rules across the US. Learn about state & local rates, and how these impact your compliance.
VATHow 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.
US Sales TaxHow 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.
VATHow 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.
VATVAT 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.
Quaderno UpdatesQuaderno 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.
US Sales TaxUS 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.
VATWhat 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.