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:
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.
