VAT Calculation Challenges for International E-commerce

[calcvat_uk]

Hello, taxation experts!

I am currently working on enhancing a VAT calculator tool for e-commerce businesses that deal with international customers. One challenge I've faced is accurately applying VAT rates for cross-border transactions, particularly for non-UK customers.

For example:

When should VAT be exempt for non-EU customers?
How can businesses ensure compliance with One-Stop-Shop (OSS) regulations?
What steps can e-commerce platforms take to automate VAT rates for different regions effectively?
Additionally, I am looking for insights into reverse charge mechanisms and their role in simplifying VAT compliance for B2B transactions.

If anyone has resources, insights, or can point me toward authoritative references, I'd be incredibly grateful!

You can also explore the VAT calculator I’ve built at CalcVAT. Feedback on how to improve its accuracy and usability is most welcome.

Looking forward to learning from this knowledgeable community!