GoodVat

What it does

GoodVat is simple, accurate tax calculation for online sellers — with Shopify, WooCommerce, and more platform plugins on the way. Powered by our own address normalization, geocoding, and tax APIs, also open to developers today.

Automate sales tax, VAT, and address standardization. Rooftop calculation and 10ms address parsing built for modern commerce. Get started free.

GoodVat handles sales tax, VAT, and GST for online sellers — no spreadsheets, no guesswork. Plugins for Shopify, WooCommerce, and more are on the way, built on our own address standardization, geocoding, and tax APIs — open to developers today. Address standardization, geocoding, and tax calculation — the building blocks GoodVat is assembling into one automatic tax engine, with ecommerce plugins on top. Each is also available on its own, today. Turn messy, free-form address strings into structured components and canonical token expansions, parsed, standardized, and ready for CRM dedup and MDM matching in 10ms. Every US address resolved to a precise rooftop coordinate and its exact tax…from goodvat.com

• 
  Quaderno Checkout2019 · ▲89

  Calculate sales taxes automatically

• 
  Stripe Tax2021 · ▲315

  Automate taxes on your Stripe transactions

• 
  Quaderno2014 · ▲126

  Automatic Tax Management for Smart Businesses

• 
  PaletteHQ2021 · ▲233

  Calculate and pay sales commissions automatically

• 
  Vatfy2021 · ▲83

  Simplified EU VAT validation for B2B sales

• AR
  A REST API for Calculating VAT in the EU2017 · vatmossapi.com · ▲59

• 
  PaymentKit▲466

  Billing that survives a processor shutdown

  Commerce · 13d ago · paymentkit.com

• 
  Equitybee Benchmark▲241

  Compare your startup equity grant for free.

  Commerce · 26d ago · equitybee.com

• TL
  The load-bearing vocabulary of Claude▲703

  Life & fun · 10d ago · louisabraham.github.io

• 
  Hey Noah▲641

  A proactive AI executive assistant for founders

  AI · Aug 2026 · heynoah.io

• 
  Clipto MCP▲640

  Let agents source clips from terabytes of your local video

  Work · 18d ago · clipto.com

• SA
  Simple algorithm and color space to generate diverse skin tones▲627

  Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…

  Life & fun · Aug 2026 · toneyalexander.github.io

• 
  AdAnt AI▲608

  Claude for viral, high-converting social ads

  AI · Aug 2026 · adant.ai

• 
  I trained a 125M model to autocomplete piano on-device▲598

  I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.

  AI · 17d ago · simedw.com