About
THQT is built by one person. This page says who, why, and how the site pays for itself, because you should know all three before trusting anything here.
Who writes this
Kartikeya Mishra, an independent software developer in Lucknow, Uttar Pradesh. I build and run software products on my own, without a team, an investor or a content agency. Every guide and every tool on this site was written and coded by me. You can find me on GitHub.
I am a developer, not a chartered accountant. That shapes what this site is good for. The arithmetic in these tools is correct and I have checked it. The classification questions — which HSN code, which rate, whether an exemption reaches your case — are not mine to answer, and I say so on the pages where it matters rather than quietly guessing.
Why these tools exist
I built THQT because small businesses in India lose real money to invoices nobody chases. Not because the owners are careless, but because chasing is unpleasant, the paperwork is fiddly, and the alternative software is built for companies with an accounts department.
The free tools came second. Somebody who needs one invoice today does not need a subscription — they need an invoice. So the tools do exactly that, once, with no signup and no email wall, and they forget everything when you close the tab. If you later find yourself doing it forty times a month, THQT is there. If you do not, the tools are still free.
How it is written and kept current
Every guide ends with the provisions it relies on, so you can check each claim against the source rather than taking my word for it. Where something is genuinely contested, or depends on facts I cannot see, the page says so instead of giving you false confidence. Every page carries the date it was last reviewed.
Rates and rules change by notification. When they do, the tools, the guides and the trade formats are updated together, and the change is recorded with its date on the changelog. That includes my own mistakes: when the GST 2.0 rates, the 15-day payment rule and the current RBI Bank Rate needed correcting, the changelog says what was wrong and when it was fixed.
The numbers behind the tools are covered by automated tests that pin each rate, threshold and statutory default, so a change to one cannot slip through unnoticed.
How this is funded
Three ways, all of them visible. Subscriptions to the THQT app. Advertising on some guide pages, labelled and kept off the tools and the homepage. And affiliate commissions on some outbound links, marked as paid links wherever they appear.
There is a whole page on how the affiliate side works, including what I will not do for a commission. Read it if you want to know how much to trust a recommendation here.
What this site does not do
It does not sell your data — the tools never send it anywhere to begin with. It does not put anything useful behind an email address. It does not use fake urgency, invented user counts or testimonials from people who do not exist. If a claim appears here, it is one I can stand behind.
Get in touch
hello@thqt.me reaches me directly. Corrections, a tool you wish existed, or a question about something on a page — all welcome. See the contact page for what to include.