Launched this week

VAT Engine

Launched this week

EU VAT calculation and compliance API for e-commerce

10 followers

EU VAT calculation and compliance API for e-commerce

10 followers

Visit website

VAT Engine turns official EU TEDB data into a developer-friendly API for e-commerce. Resolve current or historical VAT by country, product class, and supply date; calculate exact tax amounts; store audit-ready transaction evidence; monitor OSS thresholds; and prepare OSS/IOSS reports. It combines EU-27 coverage, 37 merchant-friendly tax classes, source profiles, and compliance reporting in one workflow—without spreadsheets or country-by-country plugins. Currently in alpha.

Free

Launch tags:API•Developer Tools•E-Commerce

Launch Team / Built With

Framer AI AgentsDesign and publish professional sites with AI

Promoted

Maker

📌

Hi Product Hunt! I’m Vasyl, the founder and builder of VAT Engine. I started working on VAT Engine because EU VAT becomes complicated very quickly. The applicable rate can depend on the customer’s country, product type, supply date, business status, thresholds, and reporting scheme. Smaller e-commerce and SaaS teams are often left combining spreadsheets, generic tax APIs, and separate platform plugins. VAT Engine is my attempt to turn that complexity into one developer-friendly workflow. It imports official EU TEDB data, maps the underlying categories into merchant-friendly tax classes, resolves current or historical rates, calculates VAT in exact minor units, and stores the result as audit-ready transaction evidence. That same data can then support OSS threshold monitoring, quarterly previews, exports, and future commerce integrations. GPT-5.6 has become part of my engineering workflow rather than just a tool for generating isolated snippets. I use it across architecture, implementation, Go backend work, Next.js frontend work, test design, security reviews, documentation, and release verification. The biggest benefit is being able to maintain context across a large system and keep moving from a product requirement to tested, documented code. VAT Engine is currently in alpha and under active development. I’d especially appreciate feedback from developers, e-commerce founders, accountants, and finance teams about the API design, tax-class model, and OSS/IOSS reporting workflow.

Report

4d ago

would love to see a webhook option for when thresholds get close to the OSS limit, basically a heads up before it triggers. would save a lot of manual checking for shops scaling up across EU countries

Report

3d ago

Maker

@erekengize7493
Great suggestion, Gizem — I agree that shops should not have to keep checking the threshold manually.

VAT Engine already monitors OSS threshold progress and supports threshold alerts through the in-app inbox and verified-recipient email. Outbound webhook delivery is on the roadmap, including retries and HMAC signing, but it isn’t available yet.

For the webhook triggers, would fixed levels such as 80%, 90%, and 100% work for you, or would configurable thresholds per shop be more useful?

Report

3d ago

finally a tool that handles EU VAT without juggling 27 different plugins - the historical lookups by supply date saved me when auditing last quarter's orders.

Report

3d ago

Maker

@miranpma
Thanks, Mira — I’m glad the supply-date lookup was useful. Historical validity is a core part of VAT Engine because audits, refunds, and corrections need the rate that applied when the transaction occurred, not today’s rate.

Which part of the audit process was most difficult before: finding the historical rate, matching the product category, or reconciling the original orders? That feedback would help me prioritise the next audit and export improvements.

Report

3d ago

Pazi

VAT Engine looks really promising. Congrats on the launch and wishing you a huge day! 🚀

Report

3d ago

Maker

@zvonimir_sabljic1
Thank you, Zvonimir! I really appreciate the support. VAT Engine is still in alpha, and I’m excited to keep improving it with feedback from the community 🚀

Report

2d ago