Reverse Sales Tax Calculator
Free reverse sales tax calculator. Enter any receipt total and find the original pre-tax price instantly. Works for all 50 US states, Canada GST/HST, and EU VAT. No signup.
Estimated origin: United States
Added September 3, 2026
· Last analysed September 3, 2026 · via 
StackScope records what new websites are built with, the week they launch. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We crawled this one for its tech stack and scored it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 3 September 2026; the live site may have changed since.
Every technology below links to its own page: which other new sites launched with it. Vendors and agencies watch those pages with Stackdar and hear about new adopters the week they ship, from £15 a month.
Reverse Sales Tax Calculator scores highly overall, with complete legal pages, a thorough launch checklist, and clean crawl signals. Main gaps: no Content-Security-Policy and no email security records.
Launched on Product Hunt on September 3, 2026. The site is hosted on Vercel, with a domain registered 3 months before launch. The crawl picked up 10 technologies on this site, covering analytics, DNS providers, web fonts, and frameworks. The stack includes Next.js, React, and Google Analytics.
For context, it's on one of the most common stacks we track, shared by 3,464 launches and more locked down than the typical Product Hunt launch.
If you own this site, refresh the snapshot and see the full fix list any time →
Tech Stack (10)
| DNS |
Hostinger DNS
|
| Hosting |
Vercel
|
| Security | HSTS |
| Font |
Google Fonts
|
| Framework |
React
|
| Meta-framework |
Next.js
(5)
|
| Analytics |
Google Analytics
(2)
|
Microsoft Clarity
(2)
|
|
| SEO |
Google Search Console
|
| Tag management |
Google Tag Manager
(2)
|
Infrastructure
Email Security
Storage (0)
Readiness Breakdown How?
Performance How?
Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.
Vibe Score Breakdown How?
| Signal | Points |
|---|---|
| AI onboarding signals | +5 |
| AI palette signals | +5 |
| AI writing signals | +5 |
| AI iconography signals | +5 |
This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.