A useful VAT calculation record should answer more than “what was the VAT amount?” It should preserve enough context to explain why that result exists — rate, date, tax class, source, provenance, and calculation version. vat-engine.app/blog/what-sh... #SoftwareEngineering #API #VAT

What Should a VAT Calculation Record Actually Contain? | VAT Engine

Learn what a useful VAT calculation record should preserve: amounts, rate, date, tax context, source attribution, provenance, and replay status.

vat-engine.app

When reviewing ecommerce VAT data, what information is most often missing from the transaction record? Curious what this looks like in real workflows. #VAT #Accounting #TaxTech

A rule for financial software: Don’t let binary floating point define your money model. Use an explicit monetary representation, currency scale, and rounding contract. I wrote a breakdown using VAT calculations as the example: vat-engine.app/blog/why-mon... #SoftwareEngineering #API #Fintech

Why Money Calculations Should Not Use Floating Point | VAT Engine

Learn why binary floating point is risky for money, how minor units avoid rounding drift, and why VAT calculations need explicit rounding.

vat-engine.app

A surprisingly common VAT implementation mistake: VAT-exclusive and VAT-inclusive prices cannot use the same formula. If VAT is already included in the gross price, you need to extract it — not multiply gross by the VAT rate. Full post here: vat-engine.app/blog/vat-inc... #VAT #API #Ecommerce

VAT-Inclusive vs VAT-Exclusive Pricing for Developers | VAT Engine

Learn how VAT-inclusive and VAT-exclusive pricing differ, why gross × VAT rate is wrong, and how to calculate net, VAT, and gross safely.

vat-engine.app

For OSS preparation, what usually takes more time: calculating VAT, cleaning transaction data, or validating the evidence behind it? Curious what this looks like in real workflows. #VAT #Accounting #TaxTech

When reviewing an ecommerce VAT transaction months later, what information do you need to see to trust why that VAT treatment was applied? Curious what this looks like in real workflows. #VAT #Accounting #TaxTech

New here 👋 I’m a software engineer and solo founder currently building VAT Engine. Most of what I post will be about building SaaS, API design, ecommerce infrastructure, security, SEO, and the occasional deep dive into the weird world of EU VAT. vat-engine.app #SaaS #APIs #Ecommerce #BuildInPublic

EU VAT Calculation & Compliance API | VAT Engine

VAT Engine is a free alpha EU VAT calculation and compliance API with TEDB-backed rates, 37 tax classes, recorded date-aware lookups, and OSS/IOSS workflows.

vat-engine.app