Bártfai Balázs

Bártfai Balázs

Founder of Katazom.hu & SalesForm.hu
#19724663 followers0 following
>1,000Last month
6 KP
>1,000Last year
10 KP
>1,000All time
16 KP

About

Hey! I'm Balázs Bártfai, a bootstrapped SaaS founder from Budapest, Hungary. For over a decade, I've been helping online businesses, digital sellers, and entrepreneurs automate their payments, checkout funnels, and billing through SalesForm.hu. My latest product is Katazom.hu—an automated tax compliance safety shield and real-time invoicing assistant for Hungarian freelancers and sole proprietors. It connects directly with the National Tax Authority (NAV Online Számla 3.0 API) to prevent painful retroactive 40% penalties and eliminate tax anxiety. Always excited to connect with fellow makers, indie hackers, and SaaS builders!

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Maker History

  • Katazom.hu
    Katazom.huAutomated tax compliance & invoicing assistant
    Oct 2026
    • 🎉
    Joined Product HuntJuly 15th, 2019

Forums

Katazom.hup/katazom-hu•

23d ago

Why we built an automated tax shield for Hungarian sole proprietors (KATA)

Hey Product Hunt community!

Running a micro-business or freelancing under local European tax regulations can be a compliance minefield. In Hungary, entrepreneurs under the simplified KATA fixed-tax regime face strict limits: annual revenue caps, severe restrictions on corporate invoicing, and an immediate 40% retroactive penalty if they accidentally breach their threshold.

Most traditional invoicing apps only generate PDFs they don't actively protect you from penalties or tell you when you risk crossing tax brackets.

We built Katazom.hu to eliminate tax anxiety. By connecting directly to the Hungarian National Tax and Customs Administration (NAV Online Sz mla 3.0 government API), Katazom:

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17d ago

Katazom.hu - Automated tax compliance & invoicing assistant

Running a sole proprietorship in Hungary comes with strict tax thresholds (strict invoicing rules, and severe 40% surcharges for threshold breaches). Connects directly to the Hungarian Tax Authority (NAV Online Számla 3.0 API) in real time to provide an automated safety net for entrepreneurs. • Real-time invoice synchronization directly from NAV. • Proactive limit alerts & pro-rata calculation for suspended months. • AI-assisted VAT anomaly detector and one-click corrective invoice formulas.
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